Swachh Vayu Sarvekshan 2026: Lucknow tops million-plus cities on clean air action
Lucknow tops a national clean air ranking, yet its air is over twice the legal limit. How can both be true?
Published 8 September 2026. Written by Pratidin from the reports linked at the end; every fact checked by a separate review before publishing. How we work
The Union Ministry of Environment, Forest and Climate Change (MoEFCC) announced the results of Swachh Vayu Sarvekshan (SVS) 2026, a national clean air survey of cities, on 7 September 2026. India marks that day, the International Day of Clean Air for Blue Skies, as Swachh Vayu Diwas. Among cities with a population above 10 lakh, Lucknow came first, Indore second and Jabalpur third, while Delhi was ranked 30th. Among cities with 3 to 10 lakh people, Rourkela in Odisha came first, and Firozabad and Guntur shared second place. Among cities with fewer than 3 lakh people, Kalinga Nagar, also in Odisha, came first, ahead of Angul and Talcher. For the first time, the 2026 survey also recognised municipal wards that had improved their air.
The survey rewards action, not clean air as such. Cities are assessed on what they have done in areas such as waste management, control of road dust and other pollution reduction measures. Lucknow, for example, uses electric vehicles to collect waste and mechanised sweepers to clean roads. Its annual level of PM10 (particulate matter smaller than 10 micrometres) has fallen by 45.2%, from 250 microgrammes per cubic metre (µg/m³) in 2017-18 to 137 µg/m³. That is still more than twice the national annual standard of 60 µg/m³. Across the country, 108 of the 130 cities under the National Clean Air Programme (NCAP) recorded lower PM10 levels in 2025-26 than in 2017-18. Of these, 72 cut PM10 by more than 20% and 26 by more than 40%, and 14 cities met the national standard.
NCAP was launched in January 2019 as a national plan for 130 cities that repeatedly fail the National Ambient Air Quality Standards (NAAQS), called non-attainment cities, and for million-plus cities. Its target, raised from an early goal of a 20 to 30% cut, is a 40% reduction in PM10 levels, or meeting the national standard, by 2025-26. Cities receive performance-linked grants, more than ₹16,400 crore in all, and report their progress on the PRANA portal. Supporters say NCAP has made cities plan and spend on air quality for the first time. Critics point out that the programme has no statutory backing and no penalty for failure, that it measures progress mainly by PM10 rather than the finer and more harmful PM2.5, and that a city can top a ranking for effort while its residents still breathe unsafe air.
Prelims facts
- In Swachh Vayu Sarvekshan 2026, Lucknow, Indore and Jabalpur were the top three cities with a population above 10 lakh; Delhi was 30th.
- Rourkela (3 to 10 lakh population) and Kalinga Nagar (below 3 lakh), both in Odisha, topped the two smaller categories, and municipal wards were recognised for the first time.
- The National Clean Air Programme, launched in January 2019, covers 130 cities and targets a 40% cut in PM10 levels, or meeting the national standard, by 2025-26.
- In 2025-26, 108 of the 130 NCAP cities had lower PM10 levels than in 2017-18, and 14 met the national standard.
- India's annual NAAQS limit is 60 µg/m³ for PM10 and 40 µg/m³ for PM2.5.
Quick recall
- Which city topped Swachh Vayu Sarvekshan 2026 among cities above 10 lakh population?
- Lucknow, followed by Indore and Jabalpur.
- Which cities topped the 3 to 10 lakh and below 3 lakh categories in SVS 2026?
- Rourkela and Kalinga Nagar, both in Odisha.
- What was new in Swachh Vayu Sarvekshan 2026?
- Municipal wards were recognised for the first time.
- When was the National Clean Air Programme launched?
- January 2019.
- How many cities does NCAP cover?
- 130 cities.
- India's annual NAAQS limits for PM10 and PM2.5
- 60 µg/m³ for PM10 and 40 µg/m³ for PM2.5.
- Which portal tracks NCAP progress?
- PRANA.
- What is 7 September?
- The International Day of Clean Air for Blue Skies, observed in India as Swachh Vayu Diwas.
Prelims practice question
With reference to 'Swachh Vayu Sarvekshan', recently in the news, which one of the following statements is correct?
- It ranks Indian cities only on the basis of their measured annual Air Quality Index.
- It is a survey conducted by the World Health Organization to rank the cleanest cities of Asia.
- It ranks cities under the National Clean Air Programme on the actions they take to improve air quality.
- It is a household survey of indoor air pollution from cooking fuels conducted under the Pradhan Mantri Ujjwala Yojana.
Show answer
Answer: (c) It ranks cities under the National Clean Air Programme on the actions they take to improve air quality.. Swachh Vayu Sarvekshan is run by the Ministry of Environment, Forest and Climate Change under NCAP. It scores cities on their interventions, such as waste management and road dust control, in three population categories. It is not a ranking by measured AQI alone, which is why Lucknow can top it while its PM10 level is still above the national standard. It has nothing to do with WHO or with indoor air under Ujjwala.
Use this in UPSC Mains: previous-year questions
Recurring theme: Urban air pollution and the design of India's National Clean Air Programme
- How to use this
Lay out NCAP's coverage, targets, funding and monitoring features, then use 2025-26 data and the Swachh Vayu Sarvekshan to assess results.
- NCAP, launched in January 2019, covers 130 non-attainment and million-plus cities and targets a 40% cut in PM10, or meeting the national standard, by 2025-26 (raised from an early 20 to 30% goal).
- Cities get performance-linked grants of more than ₹16,400 crore and report progress on the PRANA portal; Swachh Vayu Sarvekshan ranks them on action such as waste management and road dust control.
- In 2025-26, 108 of 130 cities had lower PM10 than in 2017-18, 72 cut it by over 20% and 26 by over 40%, but only 14 met the national standard.
- How to use this
For the third part, cite the gap between India's standards and WHO's 2021 guideline, and the NCAP changes needed to close it.
- India's annual NAAQS limit for PM2.5 is 40 µg/m³, far looser than WHO's 2021 guideline of 5 µg/m³; NAAQS were last revised in 2009.
- Critics note NCAP measures progress mainly by PM10, not the finer and more harmful PM2.5, and has no statutory backing or penalty for failure.
- Reforms suggested: give NCAP legal backing with city-specific targets, shift the headline metric to PM2.5 and health outcomes, and plan by airshed like the Commission for Air Quality Management.
Mains practice question
The National Clean Air Programme has reduced PM10 levels in most of its cities, yet many remain far above national standards. Critically examine the design of the programme and suggest reforms. (250 words)
Model answer
The National Clean Air Programme (NCAP), launched in January 2019, was India's first national, time-bound plan for urban air quality. Swachh Vayu Sarvekshan 2026 shows both its gains and its limits.
Achievements
- 108 of 130 NCAP cities recorded lower PM10 in 2025-26 than in 2017-18; 72 cut it by over 20% and 26 by over 40%.
- Performance-linked grants of more than ₹16,400 crore tie funding to results, tracked on the PRANA portal.
- Swachh Vayu Sarvekshan creates competition on action, such as mechanised sweeping and electric waste vehicles in Lucknow.
Design gaps
- Only 14 cities met the NAAQS; Lucknow's PM10 of 137 µg/m³ is still over twice the 60 µg/m³ standard.
- No statutory backing and no penalty for missing targets.
- Progress is measured mainly by PM10, while PM2.5, which is finer and more harmful, gets less weight.
- Cities do not control many sources, such as power plants, industry and crop residue burning in the wider airshed.
- National standards (PM2.5 annual limit 40 µg/m³) are far looser than WHO's 2021 guideline of 5 µg/m³.
Reforms
- Give NCAP a legal basis with enforceable, city-specific targets.
- Shift the headline metric to PM2.5 and to health outcomes.
- Plan by airshed, with regional bodies on the model of the Commission for Air Quality Management in the National Capital Region.
- Review NAAQS, last revised in 2009, in the light of WHO's 2021 guidelines.
- Expand monitoring to smaller towns and publish source apportionment studies.
NCAP has made cities act; the next phase must make the air measurably safe to breathe.
The basics
Why this matters
Air pollution is one of India's largest public health problems, and it is a standing theme in both Prelims and Mains. Swachh Vayu Sarvekshan 2026 is a report card on the country's main policy answer, the National Clean Air Programme. To read it well, you need to know what is being measured, against which standard, and why a city can win a prize while its air is still unsafe.
What is in the air
The pollutant that NCAP tracks most closely is particulate matter, tiny solid or liquid particles suspended in air. PM10 are particles smaller than 10 micrometres; PM2.5 are smaller than 2.5 micrometres, fine enough to reach deep into the lungs and the bloodstream. See Particulate matter: PM10 and PM2.5.
- Particles smaller than 10 micrometres
- Main sources include road dust and construction
- India's annual standard: 60 µg/m³
- The main yardstick used in NCAP
- Particles smaller than 2.5 micrometres
- Main sources include combustion of fuels and biomass
- India's annual standard: 40 µg/m³
- Linked more strongly to heart and lung disease
The yardstick
India's legal benchmark for outdoor air is the National Ambient Air Quality Standards, notified in 2009 for 12 pollutants. A city that repeatedly fails them is called a non-attainment city. NCAP was built around these cities.
How the programme works
NCAP began in January 2019 for 130 cities. Each city prepares a clean air action plan, receives performance-linked grants and reports progress on the PRANA portal. The target is now a 40% cut in PM10 levels, or meeting the standard, by 2025-26. Swachh Vayu Sarvekshan then ranks cities in three population bands on what they have actually done.
- 1Identify citiesNon-attainment and million-plus cities, 130 in all
- 2Make action plansCity plans on road dust, waste, vehicles, industry and construction
- 3Fund by performanceGrants linked to measured improvement, over ₹16,400 crore in all
- 4Track progressPhysical and financial progress reported on the PRANA portal
- 5Rank the effortSwachh Vayu Sarvekshan scores cities in three population categories
The national picture
In 2025-26, 108 of the 130 cities had lower PM10 than in 2017-18, and 14 met the national standard. The 2026 results were released on 7 September, the International Day of Clean Air for Blue Skies.
Go deeper
In one line: Swachh Vayu Sarvekshan 2026 ranked Lucknow, Indore and Jabalpur as the best-performing large cities on clean air action, even as most Indian cities remain above the national standard for particulate matter.
Why it matters for UPSC
UPSC asked about the National Clean Air Programme directly in Mains 2020 and about WHO's air quality guidelines in 2021. Prelims regularly tests pollutants, standards and programmes. This story brings all of these together with fresh data.
The core idea
The survey is part of the National Clean Air Programme, which asks 130 cities to cut pollution and funds them on results. The main pollutant it tracks is dust-sized particles, explained in Particulate matter: PM10 and PM2.5. Whether a city's air is safe is judged against the National Ambient Air Quality Standards. The 2026 results were announced on the International Day of Clean Air for Blue Skies, which India calls Swachh Vayu Diwas. The key point: the ranking scores effort, not the air itself.
Numbers and dates to remember
- Top three above 10 lakh population: Lucknow, Indore, Jabalpur; Delhi 30th
- 3 to 10 lakh: Rourkela first; below 3 lakh: Kalinga Nagar first
- Lucknow PM10: 250 µg/m³ (2017-18) to 137 µg/m³ (2025-26), a 45.2% fall
- 108 of 130 NCAP cities improved; 72 by over 20%, 26 by over 40%; 14 met the standard
- NAAQS annual limits: PM10 60 µg/m³, PM2.5 40 µg/m³
- NCAP launched January 2019; target 40% PM10 cut by 2025-26
Where to go next
- National Clean Air Programme: the programme behind the ranking
- Particulate matter: PM10 and PM2.5: what the numbers measure
- National Ambient Air Quality Standards: the legal yardstick for clean air
- International Day of Clean Air for Blue Skies: the day the 2026 results were released
Go deeper: effort or outcome?
The case for NCAP is that it changed behaviour. The National Clean Air Programme gave each of its cities an action plan, tied money to results and made progress public on the PRANA portal. Swachh Vayu Sarvekshan adds competition. Lucknow's use of electric waste vehicles and mechanised road sweeping, and a PM10 fall of 45.2% since 2017-18, show what sustained effort can do.
The case against is about outcomes. Only 14 of 130 cities met the national PM10 standard in 2025-26. Lucknow, the top city, is still at more than twice the limit. A ranking that scores inputs can reward a city whose residents still breathe unsafe air.
There are three structural criticisms. First, NCAP has no statutory backing, so missing a target carries no legal consequence. Second, it measures progress mainly in PM10, while the finer PM2.5, described in Particulate matter: PM10 and PM2.5, is the bigger health risk. Third, pollution does not respect city limits: power plants, industry, brick kilns and crop residue burning often lie outside municipal control. This is why experts argue for airshed-level planning, of which the Commission for Air Quality Management in the National Capital Region is one model.
A further debate concerns the benchmark itself. The National Ambient Air Quality Standards were last revised in 2009, while WHO's 2021 guidelines set the annual PM2.5 guideline at 5 µg/m³, eight times stricter than India's 40 µg/m³. Supporters of the Indian standards say they reflect what is achievable; critics say they understate the health burden.
For Mains, the balanced view is that NCAP has built the machinery; the next phase needs legal force, a PM2.5 focus and regional planning. The International Day of Clean Air for Blue Skies offers a yearly moment to measure that shift.
National Clean Air Programme
The programme behind the ranking
In one line: The National Clean Air Programme (NCAP) is India's national, time-bound plan to cut particulate pollution in its most polluted cities.
What it is
NCAP was launched by the Ministry of Environment, Forest and Climate Change in January 2019. It covers 130 cities, mostly non-attainment cities that repeatedly fail national air standards, and million-plus cities. Each city prepares a clean air action plan covering road dust, vehicles, waste burning, construction and industry.
Targets and money
The early goal was a 20 to 30% cut in particulate levels. It now aims at a 40% cut in PM10, or meeting the national standard, by 2025-26. Grants of more than ₹16,400 crore are linked to performance, and progress is tracked on the PRANA portal.
Why it is in the news
Swachh Vayu Sarvekshan 2026 ranks NCAP cities. 108 of the 130 improved their PM10 levels between 2017-18 and 2025-26, but only 14 met the standard. NCAP has no statutory backing.
Where to go next
National Clean Air Programme: every story that connects to it (2)
Particulate matter: PM10 and PM2.5
What the numbers measure
In one line: Particulate matter is a mix of tiny particles in the air, classed by size as PM10 and PM2.5.
The two sizes
PM10 are particles smaller than 10 micrometres across; road dust, construction and some industrial processes are major sources. PM2.5 are smaller than 2.5 micrometres, roughly thirty times thinner than a human hair. They come largely from burning fuel, wood, waste and crop residue, and from chemical reactions in the air.
Why size matters
The smaller the particle, the deeper it goes. PM2.5 can enter the lungs' air sacs and the bloodstream, and is linked to heart and lung disease. This is why many experts say PM2.5 should be the main yardstick for clean air policy.
Why it is in the news
NCAP measures progress mainly by PM10. Lucknow's PM10 fell from 250 to 137 µg/m³, but that remains above the 60 µg/m³ standard.
Where to go next
National Ambient Air Quality Standards
The legal yardstick for clean air
In one line: The National Ambient Air Quality Standards (NAAQS) set the legal limits for outdoor air pollutants in India.
What they cover
The Central Pollution Control Board notified the current NAAQS in November 2009 under the Air (Prevention and Control of Pollution) Act, 1981. They cover 12 pollutants, including PM10, PM2.5, sulphur dioxide, nitrogen dioxide, ozone, carbon monoxide, lead, ammonia and benzene.
Key limits
The annual average limit is 60 µg/m³ for PM10 and 40 µg/m³ for PM2.5. A city that repeatedly exceeds the standards is called a non-attainment city.
The WHO comparison
WHO's 2021 Air Quality Guidelines set annual guideline values of 15 µg/m³ for PM10 and 5 µg/m³ for PM2.5. India's standards are much looser, which is why many call for a review.
Where to go next
National Ambient Air Quality Standards: every story that connects to it (2)
International Day of Clean Air for Blue Skies
The day the 2026 results were released
In one line: The International Day of Clean Air for Blue Skies, on 7 September, is a UN day to raise awareness about air pollution.
Origin
The UN General Assembly designated the day in December 2019, and it was first observed on 7 September 2020. The UN Environment Programme leads its observance. The day stresses that air pollution is both a health and a climate problem, since many air pollutants also warm the planet.
India's observance
India marks the day as Swachh Vayu Diwas. The Ministry of Environment, Forest and Climate Change used it in 2026 to release the Swachh Vayu Sarvekshan results and to highlight progress under NCAP.
Why it is in the news
The 2026 results, with Lucknow first among million-plus cities and wards ranked for the first time, were announced on 7 September 2026.
Where to go next
Take the 8 September 2026 quiz: 30 Prelims-style questions with answers