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Every figure here is a value published by an Indian government body, linked to the archived document it came from. Nothing is estimated, modelled or filled in.

Source data is used under the Government Open Data License – India.

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What changed: every signal, newest first | India Health Observatory

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What changed

What changed

Every change signal: sources publishing on time first, then newest period first and strongest first within a period. Signals are recomputed after each release, so a revised value never leaves a stale sentence behind.

SourceStateSystemIndicator

11,742 signals. Page 2 of 294. Include minor signals (score below 1)

HighDeteriorating

30 September 2026RecordWest Bengal

West Bengal: average air quality index of 103 on 30 September 2026 is the highest since 6 March 2026.

CPCB air quality Original document Method Data

HighDeteriorating

30 September 2026RecordTelangana

Telangana: highest city air quality index of 83 on 30 September 2026 is the highest since 16 May 2026.

CPCB air quality Original document Method Data

High

NewerPage 2 of 294Older

Deteriorating

30 September 2026RecordMaharashtra

Maharashtra: average air quality index of 78 on 30 September 2026 is the highest since 17 May 2026.

CPCB air quality Original document Method Data

HighDeteriorating

30 September 2026RecordGujarat

Gujarat: average air quality index of 104 on 30 September 2026 is the highest since 3 June 2026.

CPCB air quality Original document Method Data

−31%Improving

29 September 2026Outside the usual rangeDelhi

Delhi: highest city air quality index over the 7 days to 29 September 2026 was 90, below the 5-year median of 131 for the same week (−31%).

CPCB air quality Original document Method Data

+42%Deteriorating

29 September 2026Outside the usual rangeKerala

Kerala: highest city air quality index over the 7 days to 29 September 2026 was 107, above the 5-year median of 75 for the same week (+42%).

CPCB air quality Original document Method Data

−15%Improving

29 September 2026Outside the usual rangeTelangana

Telangana: highest city air quality index over the 7 days to 29 September 2026 was 56, below the 5-year median of 66 for the same week (−15%).

CPCB air quality Original document Method Data

−31%Improving

29 September 2026Outside the usual rangeDelhi

Delhi: average air quality index over the 7 days to 29 September 2026 was 90, below the 5-year median of 131 for the same week (−31%).

CPCB air quality Original document Method Data

+31%Deteriorating

28 September 2026Outside the usual rangeChhattisgarh

Chhattisgarh: highest city air quality index over the 7 days to 28 September 2026 was 78, above the 5-year median of 59 for the same week (+31%).

CPCB air quality Original document Method Data

−31%Improving

28 September 2026Outside the usual rangeUttarakhand

Uttarakhand: average air quality index over the 7 days to 28 September 2026 was 49, below the 3-year median of 71 for the same week (−31%).

CPCB air quality Original document Method Data

+30%Deteriorating

28 September 2026Outside the usual rangeAndhra Pradesh

Andhra Pradesh: highest city air quality index over the 7 days to 28 September 2026 was 103, above the 5-year median of 79 for the same week (+30%).

CPCB air quality Original document Method Data

HighDeteriorating

28 September 2026RecordKarnataka

Karnataka: average air quality index of 64 on 28 September 2026 is the highest since 5 May 2026.

CPCB air quality Original document Method Data

+84%Deteriorating

27 September 2026Outside the usual rangeTamil Nadu

Tamil Nadu: average air quality index over the 7 days to 27 September 2026 was 87, above the 5-year median of 47 for the same week (+84%).

CPCB air quality Original document Method Data

LowImproving

27 September 2026RecordHaryana

Haryana: highest city air quality index of 110 on 27 September 2026 is the lowest since 8 October 2025.

CPCB air quality Original document Method Data

−25%Improving

26 September 2026Outside the usual rangeWest Bengal

West Bengal: average air quality index over the 7 days to 26 September 2026 was 44, below the 5-year median of 59 for the same week (−25%).

CPCB air quality Original document Method Data

+20%Deteriorating

26 September 2026Outside the usual rangeRajasthan

Rajasthan: average air quality index over the 7 days to 26 September 2026 was 96, above the 5-year median of 80 for the same week (+20%).

CPCB air quality Original document Method Data

−24%Improving

26 September 2026Outside the usual rangePuducherry

Puducherry: highest city air quality index over the 7 days to 26 September 2026 was 41, below the 4-year median of 54 for the same week (−24%).

CPCB air quality Original document Method Data

+5.6 ptsDeteriorating

26 September 2026Outside the usual rangeHaryana

Haryana: share of cities with poor air over the 7 days to 26 September 2026 was 6%, above the 5-year median of 0% for the same week (+5.6 points).

CPCB air quality Original document Method Data

+17%Deteriorating

26 September 2026Outside the usual rangeIndia

India: average air quality index over the 7 days to 26 September 2026 was 77, above the 5-year median of 66 for the same week (+17%).

CPCB air quality Original document Method Data

HighDeteriorating

26 September 2026RecordChhattisgarh

Chhattisgarh: highest city air quality index of 159 on 26 September 2026 is the highest since 8 June 2026.

CPCB air quality Original document Method Data

−24%Improving

26 September 2026Outside the usual rangePuducherry

Puducherry: average air quality index over the 7 days to 26 September 2026 was 41, below the 4-year median of 54 for the same week (−24%).

CPCB air quality Original document Method Data

LowImproving

25 September 2026RecordChhattisgarh

Chhattisgarh: highest city air quality index of 27 on 25 September 2026 is the lowest since 21 August 2022.

CPCB air quality Original document Method Data

+23%Deteriorating

25 September 2026Outside the usual rangeKerala

Kerala: highest city air quality index over the 7 days to 25 September 2026 was 89, above the 5-year median of 73 for the same week (+23%).

CPCB air quality Original document Method Data

LowImproving

24 September 2026RecordAndhra Pradesh

Andhra Pradesh: average air quality index of 51 on 24 September 2026 is the lowest since 29 October 2025.

CPCB air quality Original document Method Data

LowImproving

24 September 2026RecordWest Bengal

West Bengal: average air quality index of 38 on 24 September 2026 is the lowest since 30 October 2025.

CPCB air quality Original document Method Data

−26%Improving

24 September 2026Outside the usual rangeChandigarh

Chandigarh: highest city air quality index over the 7 days to 24 September 2026 was 47, below the 5-year median of 64 for the same week (−26%).

CPCB air quality Original document Method Data

−25%Improving

24 September 2026Outside the usual rangeChhattisgarh

Chhattisgarh: average air quality index over the 7 days to 24 September 2026 was 39, below the 4-year median of 53 for the same week (−25%).

CPCB air quality Original document Method Data

+26%Deteriorating

24 September 2026Outside the usual rangeRajasthan

Rajasthan: highest city air quality index over the 7 days to 24 September 2026 was 194, above the 5-year median of 154 for the same week (+26%).

CPCB air quality Original document Method Data

+19%Deteriorating

24 September 2026Outside the usual rangePunjab

Punjab: average air quality index over the 7 days to 24 September 2026 was 88, above the 5-year median of 74 for the same week (+19%).

CPCB air quality Original document Method Data

HighDeteriorating

24 September 2026RecordGujarat

Gujarat: average air quality index of 104 on 24 September 2026 is the highest since 3 June 2026.

CPCB air quality Original document Method Data

−26%Improving

24 September 2026Outside the usual rangeChandigarh

Chandigarh: average air quality index over the 7 days to 24 September 2026 was 47, below the 5-year median of 64 for the same week (−26%).

CPCB air quality Original document Method Data

HighDeteriorating

24 September 2026RecordMaharashtra

Maharashtra: average air quality index of 68 on 24 September 2026 is the highest since 11 June 2026.

CPCB air quality Original document Method Data

+44%Deteriorating

23 September 2026Outside the usual rangePunjab

Punjab: highest city air quality index over the 7 days to 23 September 2026 was 156, above the 5-year median of 108 for the same week (+44%).

CPCB air quality Original document Method Data

−22%Improving

23 September 2026Outside the usual rangeOdisha

Odisha: highest city air quality index over the 7 days to 23 September 2026 was 103, below the 3-year median of 131 for the same week (−22%).

CPCB air quality Original document Method Data

+20%Deteriorating

23 September 2026Outside the usual rangeMadhya Pradesh

Madhya Pradesh: highest city air quality index over the 7 days to 23 September 2026 was 123, above the 5-year median of 102 for the same week (+20%).

CPCB air quality Original document Method Data

HighDeteriorating

23 September 2026RecordMadhya Pradesh

Madhya Pradesh: share of cities with poor air of 9% on 23 September 2026 is the highest since 14 May 2026.

CPCB air quality Original document Method Data

HighDeteriorating

23 September 2026RecordMadhya Pradesh

Madhya Pradesh: average air quality index of 99 on 23 September 2026 is the highest since 9 June 2026.

CPCB air quality Original document Method Data

HighDeteriorating

22 September 2026RecordJammu and Kashmir

Jammu and Kashmir: average air quality index of 86 on 22 September 2026 is the highest since 19 January 2026.

CPCB air quality Original document Method Data

+27%Deteriorating

22 September 2026Outside the usual rangeIndia

India: highest city air quality index over the 7 days to 22 September 2026 was 260, above the 5-year median of 205 for the same week (+27%).

CPCB air quality Original document Method Data

−28%Improving

22 September 2026Outside the usual rangeChandigarh

Chandigarh: highest city air quality index over the 7 days to 22 September 2026 was 45, below the 5-year median of 62 for the same week (−28%).

CPCB air quality Original document Method Data