Share of reporting cities with poor or worse air, Haryana | India Health Observatory

Share of reporting cities with poor or worse air, Haryana

Name: Share of reporting cities with poor or worse air, Haryana
Creator: Central Pollution Control Board, Ministry of Environment, Forest and Climate Change
License: https://data.gov.in/government-open-data-license-india

The percentage of cities in the geography in CPCB's daily AQI bulletin whose National AQI was 201 or more (Poor, Very Poor or Severe) for the 24 hours ending 16:00 IST.

3 October 2026

−1% (−12%) from 5% in 2 October 2026. A move in the better direction.

Derived figure

Published in: CPCB National Air Quality Index bulletin, 3 October 2026 (252 cities)
Where in the document: AQI bulletin p.1–13, Index Value column: 1 of 24 city rows placed in Haryana at 201 or more — Yamuna nagar 228 (p.13)
Evidence: Archived file Original URL Method
First seen by the observatory: 3 Oct 2026. Fetched directly from the publisher.

HaryanaIndia

25%

50%

75%

100%

Where Haryana stands

3 October 2026. 30 reporting

All reporting states for 3 October 2026, highest first.

02468

India

Uttar Pradesh

Madhya Pradesh

Signals

All signals

What the observatory's code found notable in this series.

+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

History

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Every value, newest first. Each figure opens the release it was read from.

Period	Haryana	India	Status	Where in the document
3 October 2026	4%	2%	Derived	AQI bulletin p.1–13, Index Value column: 1 of 24 city rows placed in Haryana at 201 or more — Yamuna nagar 228 (p.13)
2 October 2026	5%	2%	Derived	AQI bulletin p.1–13, Index Value column: 1 of 21 city rows placed in Haryana at 201 or more — Gurugram 207 (p.5)
1 October 2026	0%	2%	Derived	AQI bulletin p.1–13, Index Value column: none of 23 city rows placed in Haryana at 201 or more (highest 182)
30 September 2026	4%	1%	Derived	AQI bulletin p.1–13, Index Value column: 1 of 24 city rows placed in Haryana at 201 or more — Palwal 259 (p.10)
29 September 2026	0%

Definition and method

The percentage of cities in the geography in CPCB's daily AQI bulletin whose National AQI was 201 or more (Poor, Very Poor or Severe) for the 24 hours ending 16:00 IST.

Numerator: Reporting cities with an Index Value of 201 or more
Denominator: Number of reporting cities

Methodology

Source: CPCB's daily National Air Quality Index bulletin, published about 16:05 IST for the 24 hours ending 16:00 IST. Each city row's Index Value is CPCB's National AQI (0–500): for every participating continuous monitoring station CPCB computes a sub-index for each pollutant measured (PM2.5, PM10, NO2, SO2, CO, O3, NH3, Pb; at least three, one of them PM2.5 or PM10), takes the highest sub-index as the station AQI, and reports the arithmetic mean of the city's station AQIs. CPCB itself notes that averaging across locations 'is not a scientifically sound approach' and is done for simplicity. IHO counts the city rows in the geography whose Index Value is 201 or more (CPCB's Poor, Very Poor and Severe categories, which CPCB associates with breathing discomfort for most people on prolonged exposure or worse) and divides by the number of city rows in the geography. Each printed category is checked against its band; the share uses the Index Value. The India figure counts across all reporting cities.

Caveats

With few reporting cities the share moves in large steps: in a state with one city it can only be 0% or 100% (marked low-sample). The 201 threshold is a category boundary, so a city at 199 and one at 205 are treated very differently. Coverage is urban and uneven: only cities with continuous monitoring stations appear, the network is concentrated in the Indo-Gangetic plain, Maharashtra, Rajasthan, Karnataka and Haryana, and several states and union territories have one city or none on a given day. Cities with insufficient data drop out of a day's bulletin and come back, so the set of cities behind a state's figure changes from day to day. The network grew from about 10 cities in May 2015 to about 100 in 2020 and about 250–270 in 2024–26, so long-run comparisons, especially for India as a whole, partly reflect which cities were added (many smaller towns from 2021 onward) rather than a change in the air. A city's Index Value is the 24-hour average to 16:00 IST over whichever of its stations reported that day; some bulletins mark stations whose data ended at 15:00.

Comparability

Comparable day to day within a geography when the reporting-cities count is stable. Long-run comparisons are affected by network growth, which added many smaller towns, often in cleaner regions, after 2020. Strongly seasonal: the share peaks in November–January in north India.

Revisions

Government figures are revised. Earlier values are kept, never silently overwritten.

No value in this series has been revised since the observatory first archived it.

Source releases

The government publications this series was read from.

CPCB National Air Quality Index bulletin, 15 November 2023 (248 cities)PublishedSeen 3 Oct 2026File
CPCB National Air Quality Index bulletin, 9 April 2021 (132 cities)PublishedSeen 3 Oct 2026File
CPCB National Air Quality Index bulletin, 10 April 2021 (124 cities)PublishedSeen 3 Oct 2026File
CPCB National Air Quality Index bulletin, 12 April 2021 (125 cities)PublishedSeen 3 Oct 2026File
CPCB National Air Quality Index bulletin, 11 April 2021 (126 cities)PublishedSeen 3 Oct 2026File
CPCB National Air Quality Index bulletin, 13 April 2021 (123 cities)PublishedSeen 3 Oct 2026

Cite this

India Health Observatory (2026). Share of reporting cities with poor or worse air, Haryana, 9 April 2021 to 3 October 2026 [dataset]. Original data: Central Pollution Control Board, Ministry of Environment, Forest and Climate Change, CPCB air quality. https://indiahealthobservatory.com/india/haryana/cities-with-poor-air

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