SmogRank / India / Punjab / Nohan
Nohan, month by month
Nohan has a measured daily mean on 386 days since 25 February 2025. Its worst month was July 2026, at 169 US AQI (80.5 µg/m³), 6th of 2,784 cities on that month's world ranking. Its cleanest was April 2026, at 52 US AQI (9.5 µg/m³).
Every month since 2025
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Months without a mean, and why
11 months
| Month | Why |
|---|---|
| Oct 2026 | 6 of 12 days measured; a month needs 9. The others: 5 with no readings from the monitor, 1 with under 18 hours of readings or readings that failed our checks. |
| Aug 2026 | 19 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| May 2026 | 21 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Feb 2026 | 19 of 28 days measured; a month needs 20. The others: 9 with under 18 hours of readings or readings that failed our checks. |
| Jan 2026 | 17 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks. |
| Dec 2025 | 21 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Jul 2025 | 15 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks. |
| Jun 2025 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| May 2025 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Apr 2025 | 15 of 30 days measured; a month needs 21. The others: 15 with under 18 hours of readings or readings that failed our checks. |
| Feb 2025 | 4 of 28 days measured; a month needs 20. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Nohan's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| July 2026 | 16980.5 µg/m³ | 6thof 2,784 | North-western India and Pakistan, July 2026 North-western India, 9 to 20 July 2026and 1 more |
| June 2026 | 16372.3 µg/m³ | 12thof 2,497 | – |
| March 2026 | 13750.2 µg/m³ | 86thof 2,971 | North-western India and Pakistan, March 2026 |
| October 2025 | 13750.1 µg/m³ | 80thof 2,614 | India and Pakistan, October 2025 |
| November 2025 | 13348.5 µg/m³ | 179thof 2,715 | – |
| March 2025 | 10537.1 µg/m³ | 192ndof 2,862 | – |
Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.
Nohan's worst days
| Day | US AQI | Episode |
|---|---|---|
| 16 Nov 2025 | 431291.0 µg/m³ | – |
| 28 Dec 2025 | 292217.0 µg/m³ | – |
| 25 Dec 2025 | 289214.0 µg/m³ | – |
| 27 Dec 2025 | 287212.0 µg/m³ | – |
| 9 Jun 2026 | 266191.0 µg/m³ | – |
| 26 Dec 2025 | 263188.0 µg/m³ | – |
| 8 Apr 2025 | 262187.0 µg/m³ | North-western India, 6 to 8 April 2025 |
| 25 Jul 2026 | 262187.0 µg/m³ | – |
| 24 Dec 2025 | 261186.0 µg/m³ | – |
| 26 Jul 2026 | 260185.0 µg/m³ | North-western India and Pakistan, July 2026 |
Daily means, the highest since 25 Feb 2025; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.
Use this history
SmogRank, PM2.5 monthly and daily means, Nohan, India, 25 Feb 2025 – 7 Oct 2026. Monitor data from CPCB via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/in/nohan/history (accessed 12 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
Nohan now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 18:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).