SmogRank / India / Uttar Pradesh / Prayagraj
Prayagraj, month by month
Prayagraj has a measured daily mean on 555 days since 19 February 2025. Its worst month was November 2025, at 164 US AQI (73.6 µg/m³), 84th of 2,715 cities on that month's world ranking. Its cleanest was September 2026, at 52 US AQI (9.9 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
3 months
| Month | Why |
|---|---|
| Oct 2026 | 6 of 12 days measured; a month needs 9. The others: 5 with no readings from the monitors, 1 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: 10 with under 18 hours of readings or readings that failed our checks. |
| Feb 2025 | 10 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.
Prayagraj's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| November 2025 | 16473.6 µg/m³ | 84thof 2,715 | – |
| December 2025 | 16271.0 µg/m³ | 106thof 3,006 | – |
| October 2025 | 11440.8 µg/m³ | 135thof 2,614 | India and Pakistan, October 2025 |
| April 2025 | 10838.4 µg/m³ | 98thof 2,951 | North-eastern India, April 2025 Northern India, March and April 2025 |
| February 2026 | 10035.4 µg/m³ | 189thof 2,866 | – |
| May 2025 | 9834.2 µg/m³ | 113thof 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.
Prayagraj's worst days
| Day | US AQI |
|---|---|
| 13 Dec 2025 | 201126.0 µg/m³ |
| 14 Dec 2025 | 200124.8 µg/m³ |
| 11 Nov 2025 | 191113.0 µg/m³ |
| 12 Nov 2025 | 191113.0 µg/m³ |
| 30 Dec 2025 | 18299.7 µg/m³ |
| 22 Nov 2025 | 17893.7 µg/m³ |
| 9 Nov 2025 | 17792.5 µg/m³ |
| 21 Nov 2025 | 17792.5 µg/m³ |
| 12 Dec 2025 | 17691.6 µg/m³ |
| 27 Oct 2025 | 17589.1 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, Prayagraj, India, 19 Feb 2025 – 7 Oct 2026. Monitor data from CPCB via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/in/prayagraj/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.
Prayagraj now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 22:07 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).