SmogRank / India / Bihar / Mothīhāri
Mothīhāri, month by month
Mothīhāri has a measured daily mean on 402 days since 19 February 2025. Its worst month was December 2025, at 154 US AQI (60.1 µg/m³), 151st of 3,006 cities on that month's world ranking. Its cleanest was September 2026, at 69 US AQI (18.6 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 | 4 of 12 days measured; a month needs 9. The others: 6 with no readings from the monitor, 2 with readings for part of the day (a day needs 18 hours). |
| Aug 2026 | 14 of 31 days measured; a month needs 22. The others: 17 with under 18 hours of readings or readings that failed our checks. |
| Jul 2026 | 16 of 31 days measured; a month needs 22. The others: 15 with under 18 hours of readings or readings that failed our checks. |
| Jun 2026 | 6 of 30 days measured; a month needs 21. The others: 24 with under 18 hours of readings or readings that failed our checks. |
| Feb 2026 | 17 of 28 days measured; a month needs 20. The others: 11 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. |
| Aug 2025 | 20 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks. |
| Jul 2025 | 4 of 31 days measured; a month needs 22. The others: 27 with under 18 hours of readings or readings that failed our checks. |
| Jun 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. |
| Apr 2025 | 18 of 30 days measured; a month needs 21. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| Feb 2025 | 8 of 28 days measured; a month needs 20. The others: 2 with under 18 hours of readings or readings that failed our checks. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Mothīhāri's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| December 2025 | 15460.1 µg/m³ | 151stof 3,006 | – |
| March 2025 | 15256.3 µg/m³ | 56thof 2,862 | Northern India, March and April 2025 |
| September 2025 | 14051.5 µg/m³ | 10thof 3,104 | Northern India, September 2025 Eastern India, September 2025 |
| March 2026 | 13348.5 µg/m³ | 90thof 2,971 | – |
| April 2026 | 12846.3 µg/m³ | 90thof 2,941 | – |
| November 2025 | 12645.6 µg/m³ | 187thof 2,715 | – |
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.
Mothīhāri's worst days
| Day | US AQI | Episode |
|---|---|---|
| 23 Sept 2025 | 246171.0 µg/m³ | Northern India, September 2025 |
| 9 Sept 2025 | 236161.0 µg/m³ | Eastern India, September 2025 |
| 10 Sept 2025 | 200125.0 µg/m³ | Eastern India, September 2025 |
| 26 Mar 2025 | 195118.0 µg/m³ | Northern India, March and April 2025 |
| 7 Dec 2025 | 193116.0 µg/m³ | – |
| 22 Dec 2025 | 185104.0 µg/m³ | – |
| 26 Aug 2025 | 183101.0 µg/m³ | – |
| 24 Dec 2025 | 183101.0 µg/m³ | – |
| 1 Jun 2026 | 18299.9 µg/m³ | – |
| 28 Feb 2025 | 18197.6 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, Mothīhāri, India, 19 Feb 2025 – 6 Oct 2026. Monitor data from CPCB via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/in/mothihari/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.
Mothīhāri 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).