SmogRank / United States / Alabama / Birmingham
Birmingham, month by month
Birmingham, Alabama has a measured daily mean on 1,261 days since 1 January 2023. Its worst month was September 2023, at 71 US AQI (20.0 µg/m³), 101st of 2,176 cities on that month's world ranking. Its cleanest was May 2026, at 35 US AQI (6.3 µg/m³). 2025 averaged 53 US AQI (10.2 µg/m³), against 59 US AQI (13.4 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
2 months
| Month | Why |
|---|---|
| Mar 2023 | 11 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive. |
| Feb 2023 | 3 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Birmingham's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| September 2023 | 7120.0 µg/m³ | 101stof 2,176 | – |
| October 2024 | 7019.4 µg/m³ | 130thof 2,020 | – |
| November 2023 | 6617.0 µg/m³ | 114thof 2,243 | Eastern United States and Canada, November 2023 |
| August 2024 | 6617.0 µg/m³ | 142ndof 2,010 | Southern and eastern United States and Mexico, July and August 2024 |
| June 2023 | 6516.8 µg/m³ | 339thof 1,603 | Eastern United States and Canada, June and July 2023 Eastern United States and Canada, May and June 2023 |
| August 2023 | 6416.1 µg/m³ | 175thof 1,980 | – |
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.
Birmingham's worst days
| Day | US AQI | Episode |
|---|---|---|
| 17 Jul 2023 | 11842.6 µg/m³ | United States and Canada, July 2023 |
| 21 Mar 2024 | 11541.2 µg/m³ | Georgia, Alabama and South Carolina, United States, March 2024 |
| 21 Feb 2024 | 11139.6 µg/m³ | South-eastern United States, February 2024 |
| 2 Aug 2024 | 10637.5 µg/m³ | Southern and eastern United States and Mexico, July and August 2024 |
| 28 Mar 2025 | 10637.5 µg/m³ | – |
| 11 Oct 2023 | 10436.8 µg/m³ | – |
| 6 Nov 2023 | 10135.7 µg/m³ | Eastern United States and Canada, November 2023 |
| 17 Nov 2024 | 9834.2 µg/m³ | – |
| 24 Oct 2024 | 9633.1 µg/m³ | – |
| 5 Nov 2023 | 9633.0 µg/m³ | Eastern United States and Canada, November 2023 |
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, Birmingham, Alabama, 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/birmingham/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.
Birmingham 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).