SmogRank / India / Assam / Kahi Kuchi
Kahi Kuchi, month by month
Kahi Kuchi has a measured daily mean on 490 days since 19 February 2025. Its worst month was March 2025, at 176 US AQI (91.4 µg/m³), 7th of 2,862 cities on that month's world ranking. Its cleanest was April 2026, at 88 US AQI (28.7 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
5 months
| Month | Why |
|---|---|
| Oct 2026 | 5 of 12 days measured; a month needs 9. The others: 6 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours). |
| Feb 2026 | 17 of 28 days measured; a month needs 20. The others: 11 with readings for part of the day (a day needs 18 hours). |
| Jan 2026 | 21 of 31 days measured; a month needs 22. The others: 9 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours). |
| Apr 2025 | 20 of 30 days measured; a month needs 21. The others: 2 with no readings from the monitor, 8 with readings for part of the day (a day needs 18 hours). |
| Feb 2025 | 7 of 28 days measured; a month needs 20. The others: 1 with no readings from the monitor, 2 with readings for part of the day (a day needs 18 hours). |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Kahi Kuchi's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| March 2025 | 17691.4 µg/m³ | 7thof 2,862 | Northern India, March and April 2025 North-eastern India, March 2025 |
| December 2025 | 13750.3 µg/m³ | 199thof 3,006 | – |
| July 2025 | 13750.0 µg/m³ | 33rdof 2,889 | – |
| March 2026 | 13248.0 µg/m³ | 94thof 2,971 | – |
| October 2025 | 12344.5 µg/m³ | 108thof 2,614 | India and Pakistan, October 2025 |
| May 2025 | 11842.5 µg/m³ | 64thof 2,826 | – |
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.
Kahi Kuchi's worst days
| Day | US AQI | Episode |
|---|---|---|
| 17 Jul 2025 | 265190.0 µg/m³ | – |
| 12 Mar 2026 | 223148.0 µg/m³ | – |
| 20 Mar 2025 | 222147.0 µg/m³ | North-eastern India, March 2025 |
| 21 Mar 2025 | 222147.0 µg/m³ | North-eastern India, March 2025 |
| 28 Mar 2025 | 222147.0 µg/m³ | Northern India, March and April 2025 |
| 27 Mar 2025 | 210135.0 µg/m³ | Northern India, March and April 2025 |
| 25 Mar 2025 | 200125.0 µg/m³ | Northern India, March and April 2025 |
| 11 Mar 2025 | 192114.0 µg/m³ | – |
| 9 Mar 2025 | 191113.0 µg/m³ | – |
| 10 May 2025 | 191112.0 µg/m³ | – |
Daily means, the highest since 19 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, Kahi Kuchi, India, 19 Feb 2025 – 6 Oct 2026. Monitor data from CPCB via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/in/kahi-kuchi/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.
Kahi Kuchi now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 21:07 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).