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7 Mar 2020·Source: The Hindu
7 min
Environment & EcologyPolity & GovernanceNEWS

CPCB Report Reveals Widespread Air Pollution: 204 Indian Cities Fail Quality Standards

A CPCB report highlights that over 85% of Indian cities surveyed failed to meet national air quality norms.

UPSC-PrelimsUPSC-MainsSSC

Quick Revision

1.

204 out of 238 Indian cities surveyed did not meet national ambient air quality standards.

2.

The report covered air quality data from winter 2019-2020 (October 2019 to February 2020).

3.

102 cities exceeded PM2.5 limits.

4.

100 cities exceeded PM10 limits.

5.

43 cities exceeded both PM2.5 and PM10 limits.

6.

Delhi, Ghaziabad, and Patna were among the most polluted cities.

7.

The report was released by the Central Pollution Control Board (CPCB).

Key Dates

Winter @@2019-2020@@ (October @@2019@@ to February @@2020@@)

Key Numbers

@@204@@ cities failed air quality standards@@238@@ cities surveyed@@102@@ cities exceeded PM2.5 limits@@100@@ cities exceeded PM10 limits@@43@@ cities exceeded both PM2.5 and PM10 limits

Visual Insights

भारत में वायु प्रदूषण की वर्तमान स्थिति (शीतकालीन 2025-26)

CPCB और CREA की नवीनतम रिपोर्टों के अनुसार, भारत में वायु प्रदूषण की गंभीर स्थिति को दर्शाने वाले प्रमुख आंकड़े।

राष्ट्रीय मानकों का उल्लंघन करने वाले शहर
204/238+31

सर्वेक्षण किए गए 238 शहरों में से 204 शहरों ने शीतकालीन 2025-26 में PM2.5 के राष्ट्रीय परिवेशी वायु गुणवत्ता मानकों (NAAQS) का उल्लंघन किया, जो पिछले साल के 173 शहरों से अधिक है।

सबसे प्रदूषित शहर (PM2.5)
गाजियाबाद: 172 µg/m3

शीतकालीन 2025-26 में गाजियाबाद भारत का सबसे प्रदूषित शहर रहा, जिसके बाद नोएडा (166 µg/m3) और दिल्ली (163 µg/m3) का स्थान रहा।

दिल्ली में 'गंभीर' वायु गुणवत्ता वाले दिन
18 दिन

शीतकालीन 2025-26 के दौरान दिल्ली में 18 दिन 'गंभीर' वायु गुणवत्ता दर्ज की गई, साथ ही 87 'बहुत खराब' और 24 'खराब' दिन भी रहे, जो प्रदूषण की लगातार चुनौती को दर्शाता है।

भारत के प्रमुख प्रदूषित शहर और प्रभावित राज्य (शीतकालीन 2025-26)

यह नक्शा शीतकालीन 2025-26 में भारत के सबसे प्रदूषित शहरों और उन राज्यों को दर्शाता है जहां राष्ट्रीय परिवेशी वायु गुणवत्ता मानकों (NAAQS) का व्यापक उल्लंघन देखा गया।

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📍गाजियाबाद📍नोएडा📍दिल्ली📍पटना📍हरियाणा (राज्य)

Mains & Interview Focus

Don't miss it!

The CPCB report reveals a critical failure in India's air quality management, with 204 of 238 cities failing to meet national ambient air quality standards during winter 2019-2020. This persistent non-compliance underscores systemic challenges in environmental governance, despite robust legal frameworks like the Air (Prevention and Control of Pollution) Act, 1981. The data points to an urgent need for re-evaluating current strategies and strengthening enforcement mechanisms.

Primary drivers of this widespread pollution include rapid urbanization, unchecked industrial emissions, and a burgeoning vehicular fleet. Agricultural stubble burning in northern states, particularly during winter, further exacerbates the problem, creating severe smog events. These factors collectively contribute to a public health crisis, leading to increased respiratory illnesses and premature deaths, as highlighted by various studies, including those published in the Lancet Planetary Health.

While the National Clean Air Programme (NCAP), launched in 2019, aims to reduce particulate matter by 20-30% by 2024, its implementation faces significant hurdles. Many cities lack comprehensive action plans, and allocated funds often fall short of the required investment for infrastructure upgrades and technological adoption. Furthermore, inter-state coordination, especially concerning transboundary pollution like stubble burning, remains a critical weakness in current policy execution.

Contrastingly, some global cities have demonstrated success through stringent enforcement and innovative solutions. Beijing, for instance, achieved notable improvements by implementing aggressive industrial relocation and vehicular emission controls. India must move beyond incremental changes, focusing on a legally binding framework for NCAP, strengthening the capacity of State Pollution Control Boards, and mandating real-time emission monitoring for all major industrial sources.

To truly address this crisis, the government must prioritize public health over short-term economic gains, enforcing environmental regulations with zero tolerance. A dedicated national fund, coupled with performance-linked incentives for states and urban local bodies, will be essential to drive sustainable improvements in air quality across the nation.

Exam Angles

1.

GS Paper 3: Environment and Ecology - Pollution, Conservation, Environmental Impact Assessment.

2.

GS Paper 2: Governance - Government policies and interventions for development in various sectors and issues arising out of their design and implementation.

3.

GS Paper 1: Geography - Environmental degradation, major natural resources distribution.

4.

Prelims: Facts about CPCB, NAAQS, NCAP, CAQM, types of pollutants, and geographical distribution of pollution.

View Detailed Summary

Summary

A government report shows that most Indian cities, 204 out of 238, have dirty air that isn't safe to breathe, especially in winter. This means the air has too many tiny harmful particles, making people sick and causing environmental problems. It highlights a big challenge for India to clean up its air.

Ghaziabad was the most-polluted city in India during the winter season of 2025-26, recording an average PM2.5 concentration of 172 μg/m3. It was followed by Noida (166 μg/m3) and Delhi (163 μg/m3), according to an air-quality analysis by the Centre for Research on Energy and Clean Air (CREA). The analysis, based on Continuous Ambient Air Quality Monitoring Stations (CAAQMS) data from the Central Pollution Control Board (CPCB), covered the period from October 1, 2025, to February 28, 2026.

The CREA report indicated that at least 204 out of 238 Indian cities with sufficient monitoring data recorded average winter PM2.5 concentrations above India's National Ambient Air Quality Standards (NAAQS), a significant increase from 173 cities in the previous winter. Delhi experienced 18 'severe' days, 87 'very poor' days, 24 'poor' days, 15 'moderate' days, six 'satisfactory' days, and only one 'good' day during this winter period. The top 10 most polluted cities included Ghaziabad, Noida, Delhi, Greater Noida, Bahadurgarh, Dharuhera, Gurugram, Bhiwadi, Charkhi Dadri, and Baghpat. Uttar Pradesh and Haryana each accounted for four cities in this list, with Delhi and Rajasthan contributing one city each.

At the state level, Haryana recorded the highest number of cities where all 24 monitored locations exceeded the PM2.5 NAAQS. Andhra Pradesh (all 9 cities), Punjab (all 8), West Bengal (all 7), and Gujarat (all 6) also showed universal exceedances across their monitored cities. High proportions of cities breaching the national standard were also noted in Rajasthan (33 of 34 cities), Maharashtra (30 of 31 cities), Bihar (23 of 24 cities), Uttar Pradesh (17 of 20 cities), Odisha (13 of 14 cities), and Madhya Pradesh (11 of 13 cities). In contrast, Chamarajanagar in Karnataka was identified as the cleanest city, with an average PM2.5 concentration of 19 μg/m3, and eight of the top 10 cleanest cities were from Karnataka.

Manoj Kumar, India Analyst at CREA, emphasized the need for nationwide PM2.5 reduction targets, similar to those set by the Commission for Air Quality Management (CAQM) for the NCR region. He also called for a stronger focus on controlling gaseous pollutants such as sulphur dioxide (SO2), nitrogen dioxide (NO2), and volatile organic compounds (VOCs), which contribute to the formation of secondary PM2.5 and ozone. The analysis further highlighted widespread non-compliance among cities under the National Clean Air Programme (NCAP), with 84 of 96 NCAP cities exceeding India's NAAQS and all 96 exceeding the World Health Organization (WHO) guideline. Similarly, 120 of 142 non-NCAP cities exceeded the national standard, and all 142 surpassed the WHO guideline. In the Indo-Gangetic Plain (IGP), 75 of 79 monitored cities exceeded the national PM2.5 standard, and none of the 28 monitored cities in the National Capital Region (NCR) complied with the national standard.

This widespread air pollution across India, particularly in the densely populated Indo-Gangetic Plain and National Capital Region, underscores persistent environmental and public health challenges. It is highly relevant for UPSC Prelims and Mains examinations, especially under GS Paper 3 (Environment, Pollution, and Conservation) and GS Paper 2 (Government Policies and Interventions).

Background

भारत में वायु प्रदूषण एक गंभीर पर्यावरणीय और सार्वजनिक स्वास्थ्य चिंता का विषय है, खासकर सर्दियों के महीनों में जब प्रतिकूल मौसम संबंधी स्थितियां प्रदूषकों के जमाव को बढ़ा देती हैं। इस चुनौती से निपटने के लिए, भारत सरकार ने पर्यावरण (संरक्षण) अधिनियम, 1986 के तहत केंद्रीय प्रदूषण नियंत्रण बोर्ड (CPCB) की स्थापना की है, जो देश में वायु गुणवत्ता की निगरानी और सुधार के लिए जिम्मेदार प्रमुख निकाय है। CPCB राष्ट्रीय परिवेशी वायु गुणवत्ता मानक (NAAQS) निर्धारित करता है, जो हवा में विभिन्न प्रदूषकों की स्वीकार्य सीमा को परिभाषित करते हैं, जिसमें PM2.5 भी शामिल है, जो फेफड़ों में गहराई तक प्रवेश करने वाले महीन कण होते हैं। NAAQS का उद्देश्य पूरे देश में वायु गुणवत्ता के एक समान स्तर को सुनिश्चित करना है, जिससे मानव स्वास्थ्य और पर्यावरण की रक्षा हो सके। इन मानकों का उल्लंघन यह दर्शाता है कि संबंधित क्षेत्रों में वायु प्रदूषण का स्तर स्वास्थ्य के लिए हानिकारक है। CPCB द्वारा देश भर में स्थापित सतत परिवेशी वायु गुणवत्ता निगरानी स्टेशनों (CAAQMS) के माध्यम से वायु गुणवत्ता डेटा एकत्र किया जाता है, जो नीति निर्माताओं और जनता को वास्तविक समय की जानकारी प्रदान करता है। ऐतिहासिक रूप से, भारत में वायु प्रदूषण के प्रमुख स्रोतों में औद्योगिक उत्सर्जन, वाहनों का प्रदूषण, निर्माण गतिविधियाँ, पराली जलाना और घरेलू ऊर्जा के लिए बायोमास का उपयोग शामिल है। विशेष रूप से, राष्ट्रीय राजधानी क्षेत्र (NCR) और गंगा के मैदानी इलाके (IGP) अपनी भौगोलिक और मौसमी विशेषताओं के कारण सर्दियों में गंभीर वायु प्रदूषण का अनुभव करते हैं, जहाँ ठंडी हवा प्रदूषकों को फँसा लेती है, जिससे धुंध और खराब दृश्यता होती है।

Latest Developments

वायु प्रदूषण की बढ़ती समस्या से निपटने के लिए, भारत सरकार ने 2019 में राष्ट्रीय स्वच्छ वायु कार्यक्रम (NCAP) शुरू किया। इसका लक्ष्य 2024 तक PM2.5 और PM10 की सांद्रता को 20-30% तक कम करना है, जिसमें बाद में 2026 तक 40% की कमी का संशोधित लक्ष्य रखा गया। यह कार्यक्रम शहर-विशिष्ट कार्य योजनाओं के माध्यम से प्रदूषण को कम करने के लिए एक समयबद्ध राष्ट्रीय ढाँचा प्रदान करता है। राष्ट्रीय राजधानी क्षेत्र (NCR) में वायु प्रदूषण के प्रबंधन के लिए, वायु गुणवत्ता प्रबंधन आयोग (CAQM) को 2021 में एक स्थायी निकाय के रूप में स्थापित किया गया था। CAQM NCR और आसपास के क्षेत्रों में वायु प्रदूषण से संबंधित सभी मामलों के लिए एक व्यापक ढाँचा प्रदान करता है, जिसमें विभिन्न स्रोतों से प्रदूषण को नियंत्रित करने के लिए नीतियां बनाना और उनका समन्वय करना शामिल है। CAQM ने NCR के लिए PM2.5 कमी के लक्ष्य निर्धारित किए हैं और प्रदूषण नियंत्रण के लिए कई उपायों को लागू किया है, जैसे कि निर्माण और विध्वंस गतिविधियों पर प्रतिबंध, औद्योगिक उत्सर्जन पर नियंत्रण और पराली जलाने पर रोक। हालांकि, वर्तमान रिपोर्ट बताती है कि इन प्रयासों के बावजूद, व्यापक गैर-अनुपालन जारी है, और पिछले वर्ष की तुलना में अधिक शहरों ने राष्ट्रीय मानकों का उल्लंघन किया है। CREA के विश्लेषक मनोज कुमार ने राष्ट्रव्यापी PM2.5 कमी लक्ष्यों की आवश्यकता पर प्रकाश डाला है और सल्फर डाइऑक्साइड (SO2), नाइट्रोजन डाइऑक्साइड (NO2) और वाष्पशील कार्बनिक यौगिकों (VOCs) जैसे गैसीय प्रदूषकों पर अधिक ध्यान केंद्रित करने का आह्वान किया है, जो द्वितीयक PM2.5 और ओजोन के निर्माण में महत्वपूर्ण योगदान देते हैं। भविष्य में, इन गैसीय प्रदूषकों को लक्षित करने वाली नीतियों और NCAP तथा CAQM के तहत निर्धारित लक्ष्यों को प्राप्त करने के लिए मजबूत प्रवर्तन पर ध्यान केंद्रित किया जाएगा।

Sources & Further Reading

Frequently Asked Questions

1. Why is the finding that "204 out of 238 Indian cities failed air quality standards" crucial for UPSC Prelims, and what's a common trap related to these numbers?

This finding highlights the widespread nature and severity of air pollution across India, making it a significant environmental and public health concern. For Prelims, the exact numbers (204 cities failing out of 238 surveyed) and the percentage (over 85%) are important to grasp the scale. It also connects directly to the National Ambient Air Quality Standards (NAAQS) set by CPCB.

Exam Tip

Examiners might try to confuse you by mixing up the total cities surveyed (238) with the number that failed (204), or by asking about specific pollutant failures (PM2.5 vs PM10). Remember the overall failure rate and the specific winter period (2019-2020) the report covers.

2. CPCB और CAQM दोनों वायु प्रदूषण से निपटते हैं। राष्ट्रीय राजधानी क्षेत्र (NCR) के लिए उनकी भूमिकाओं और अधिकार क्षेत्र में मौलिक अंतर क्या है?

The Central Pollution Control Board (CPCB) is a statutory organization established under the Environment (Protection) Act, 1986, with a nationwide mandate to monitor air quality, set standards (NAAQS), and advise the central government on pollution control. The Commission for Air Quality Management (CAQM), established in 2021, is a specialized body specifically for the National Capital Region (NCR) and adjoining areas, focusing on planning, execution, and enforcement of measures to prevent and control air pollution in that specific region. CAQM has overriding powers over CPCB and state pollution control boards within the NCR.

Exam Tip

Remember CPCB's broader national role and standard-setting function, while CAQM is a more recent, region-specific (NCR) enforcement and management body with superior powers in its domain.

3. Given that 204 cities failed air quality standards in Winter 2019-2020, how does this report reflect on the effectiveness of the National Clean Air Programme (NCAP) launched in 2019?

The report, covering Winter 2019-2020, indicates the challenging baseline against which the National Clean Air Programme (NCAP) began its operations. NCAP, launched in 2019, aims to reduce PM2.5 and PM10 concentrations by 20-30% by 2024, with a revised target of 40% reduction by 2026. While the report highlights the scale of the problem *at the beginning* of NCAP's implementation, it underscores the immense task ahead. It suggests that despite the program's existence, significant and sustained efforts are required across multiple sectors to achieve the desired air quality improvements.

Exam Tip

When evaluating government programs like NCAP, always connect their stated goals with available data. This report provides a baseline and shows the magnitude of the problem that NCAP is designed to address, rather than directly measuring its success or failure in the initial phase.

4. If a Mains question asks to 'critically examine' India's efforts to curb air pollution, how can I effectively use the findings of this CPCB report in my answer?

To critically examine, you can use the report's findings to highlight both the scale of the challenge and the necessity of ongoing efforts. Start by stating the problem's magnitude: 'The CPCB report for Winter 2019-2020 revealed that 204 out of 238 Indian cities failed national air quality standards, underscoring the pervasive nature of air pollution.' Then, discuss government initiatives like NCAP and CAQM as positive steps. However, critically analyze by pointing out that despite these programs, the problem remains widespread, indicating gaps in implementation, enforcement, or the need for more aggressive targets and multi-sectoral coordination. Conclude with a balanced perspective on the way forward.

  • Introduction: Use the 204/238 cities data to establish the severity and widespread nature of air pollution.
  • Government Initiatives: Mention NCAP (2019 launch, targets) and CAQM (for NCR) as key policy responses.
  • Critical Analysis: Argue that despite these programs, the report shows persistent failure to meet standards, indicating challenges in implementation, monitoring, or the need for more stringent measures.
  • Way Forward: Suggest strengthening enforcement, promoting cleaner technologies, improving public transport, and addressing specific sources like stubble burning and industrial emissions.

Exam Tip

Always provide specific data points from reports to substantiate your arguments in Mains answers. This adds credibility and depth to your critical examination.

5. What are the National Ambient Air Quality Standards (NAAQS) mentioned in the report, and why is it challenging for cities to meet them, especially for PM2.5 and PM10?

The National Ambient Air Quality Standards (NAAQS) are limits set by the CPCB for various air pollutants, including Particulate Matter (PM2.5 and PM10), Sulphur Dioxide (SO2), Nitrogen Dioxide (NO2), etc., to protect public health and the environment. Cities struggle to meet these standards primarily due to a combination of factors. PM2.5 and PM10 are particularly challenging because they originate from diverse sources such as vehicular emissions, industrial activities, construction dust, biomass burning (including agricultural stubble burning), and household combustion. Additionally, adverse meteorological conditions during winter, like low wind speeds and temperature inversions, trap pollutants close to the ground, exacerbating the problem.

Exam Tip

Remember that NAAQS are set by CPCB under the Environment (Protection) Act, 1986. For PM2.5 and PM10, focus on the multiple anthropogenic (human-caused) sources and the role of winter meteorology.

6. Beyond the numbers, what are the broader implications of such widespread air pollution for India's public health and economy, and what immediate steps could be prioritized?

Widespread air pollution has severe implications for both public health and the economy. For public health, it leads to increased respiratory diseases, cardiovascular problems, premature deaths, and reduced life expectancy. Economically, it results in lost productivity due to illness, increased healthcare expenditures, and potential impacts on tourism and foreign investment. Prioritized immediate steps include strict enforcement of emission norms for industries and vehicles, promoting public transportation and electric vehicles, managing agricultural stubble burning through in-situ and ex-situ solutions, controlling dust from construction and demolition activities, and enhancing public awareness.

  • Public Health: Respiratory illnesses (asthma, bronchitis), heart disease, strokes, lung cancer, premature mortality.
  • Economy: Healthcare costs, lost workdays, reduced agricultural yields, impact on tourism, reduced foreign investment.
  • Prioritized Steps: Stricter emission standards for vehicles and industries, promotion of public transport and EVs, effective stubble burning management, dust control at construction sites, and robust monitoring with public disclosure.

Exam Tip

In interview questions, always offer a multi-faceted answer, covering both problems and solutions across different domains (health, economy, environment, governance).

Practice Questions (MCQs)

1. Consider the following statements regarding the recent CREA air quality analysis for winter 2025-26: 1. Ghaziabad was identified as the most polluted city in India, followed by Noida and Delhi. 2. The analysis found that 204 out of 238 Indian cities with sufficient data recorded PM2.5 concentrations above India's National Ambient Air Quality Standards (NAAQS). 3. All monitored cities in the National Capital Region (NCR) complied with the national PM2.5 standard. Which of the statements given above is/are correct?

  • A.1 only
  • B.2 only
  • C.1 and 2 only
  • D.1, 2 and 3
Show Answer

Answer: C

Statement 1 is CORRECT: The CREA analysis explicitly states that Ghaziabad was the most polluted city in India during winter 2025-26, followed by Noida and Delhi. Ghaziabad recorded an average PM2.5 concentration of 172 μg/m3, Noida 166 μg/m3, and Delhi 163 μg/m3. Statement 2 is CORRECT: The report highlights that 204 out of 238 Indian cities with sufficient monitoring data recorded average winter PM2.5 concentrations above India's National Ambient Air Quality Standards (NAAQS). Statement 3 is INCORRECT: The analysis clearly states that none of the 28 monitored cities in the National Capital Region (NCR) complied with the national standard. This indicates widespread non-compliance in the NCR.

2. Which of the following statements about air pollution control measures and related bodies in India is/are correct? 1. The National Clean Air Programme (NCAP) aims to achieve a 40% reduction in PM2.5 and PM10 concentrations by 2026. 2. The Commission for Air Quality Management (CAQM) is a statutory body established to address air pollution in the National Capital Region and adjoining areas. 3. Gaseous pollutants like Sulphur Dioxide (SO2) and Nitrogen Dioxide (NO2) contribute to the formation of secondary PM2.5 and ozone. Select the correct answer using the code given below:

  • A.1 and 2 only
  • B.2 and 3 only
  • C.1 and 3 only
  • D.1, 2 and 3
Show Answer

Answer: D

Statement 1 is CORRECT: The National Clean Air Programme (NCAP) initially aimed for a 20-30% reduction by 2024, but the target was later revised to a 40% reduction in PM2.5 and PM10 concentrations by 2026. Statement 2 is CORRECT: The Commission for Air Quality Management (CAQM) was established as a statutory body in 2021 to address air pollution in the National Capital Region and adjoining areas, replacing the Environment Pollution (Prevention and Control) Authority (EPCA). Statement 3 is CORRECT: Manoj Kumar, India Analyst at CREA, specifically mentioned that gaseous pollutants such as sulphur dioxide (SO2), nitrogen dioxide (NO2), and volatile organic compounds (VOCs) contribute to the formation of secondary PM2.5 and ozone, which is a major component of particulate pollution.

3. With reference to the geographical distribution of air pollution in India during winter 2025-26, consider the following statements: 1. The Indo-Gangetic Plain (IGP) showed widespread exceedances of the national PM2.5 standard, with only a few cities remaining within the prescribed limit. 2. Haryana recorded the highest number of cities where all monitored locations exceeded the PM2.5 NAAQS. 3. Chamarajanagar in Karnataka was identified as one of the top 10 most polluted cities in India. Which of the statements given above is/are correct?

  • A.1 and 2 only
  • B.2 and 3 only
  • C.1 only
  • D.1, 2 and 3
Show Answer

Answer: A

Statement 1 is CORRECT: The report states that in the Indo-Gangetic Plain (IGP), 75 out of 79 monitored cities exceeded the national PM2.5 standard, while only four remained within the prescribed limit, indicating widespread exceedances. Statement 2 is CORRECT: The analysis explicitly mentions that at the state level, Haryana recorded the highest number of cities where all monitored locations exceeded the PM2.5 NAAQS, with 24 cities breaching the standard. Statement 3 is INCORRECT: Chamarajanagar in Karnataka was identified as the CLEANEST city in India during the winter of 2025-26, with an average PM2.5 concentration of 19 μg/m3, not one of the most polluted.

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Anshul Mann

Environment & Climate Policy Analyst

Anshul Mann writes about Environment & Ecology at GKSolver, breaking down complex developments into clear, exam-relevant analysis.

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