SmogRank / United States / California / Brawley
Brawley, month by month
Brawley has a measured daily mean on 1,299 days since 1 January 2023. Its worst month was July 2023, at 58 US AQI (12.8 µg/m³), 306th of 1,432 cities on that month's world ranking. Its cleanest was March 2023, at 21 US AQI (3.8 µg/m³). 2025 averaged 42 US AQI (7.6 µg/m³), against 46 US AQI (8.2 µg/m³) in 2024.
Every month since 2023
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 |
|---|---|
| Jun 2026 | 7 of 30 days measured; a month needs 21. The others: 23 with under 18 hours of readings or readings that failed our checks. |
| May 2026 | 12 of 31 days measured; a month needs 22. The others: 19 with under 18 hours of readings or readings that failed our checks. |
| May 2025 | 18 of 31 days measured; a month needs 22. The others: 13 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.
Brawley's worst months
| Month | US AQI | World rank |
|---|---|---|
| July 2023 | 5812.8 µg/m³ | 306thof 1,432 |
| May 2023 | 5812.6 µg/m³ | 227thof 1,600 |
| June 2024 | 5712.2 µg/m³ | 334thof 2,563 |
| April 2023 | 5511.2 µg/m³ | 307thof 1,622 |
| May 2024 | 5511.2 µg/m³ | 567thof 2,684 |
| June 2025 | 5511.1 µg/m³ | 990thof 2,508 |
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.
Brawley's worst days
| Day | US AQI |
|---|---|
| 1 May 2023 | 15763.9 µg/m³ |
| 3 Apr 2023 | 14653.6 µg/m³ |
| 17 May 2025 | 12444.8 µg/m³ |
| 13 May 2025 | 11842.4 µg/m³ |
| 25 Apr 2025 | 11340.2 µg/m³ |
| 22 Feb 2023 | 10737.9 µg/m³ |
| 23 Jul 2023 | 9934.8 µg/m³ |
| 30 Sept 2023 | 9834.5 µg/m³ |
| 21 Feb 2023 | 9834.2 µg/m³ |
| 22 Jun 2023 | 9331.4 µg/m³ |
Daily means, the highest since 1 Jan 2023; 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, Brawley, United States, 1 Jan 2023 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/brawley/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.
Brawley now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 17:07 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).