SmogRank / United States / Alabama / Montgomery
Montgomery, month by month
Montgomery, Alabama has a measured daily mean on 1,254 days since 1 January 2023. Its worst month was June 2023, at 60 US AQI (13.8 µg/m³), 444th of 1,603 cities on that month's world ranking. Its cleanest was January 2025, at 30 US AQI (5.4 µg/m³). 2025 averaged 46 US AQI (8.2 µg/m³), against 41 US AQI (7.4 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
5 months
| Month | Why |
|---|---|
| Jul 2023 | 21 of 31 days measured; a month needs 22. The others: 1 missing from OpenAQ's archive, 9 with under 18 hours of readings or readings that failed our checks. |
| Apr 2023 | 6 of 30 days measured; a month needs 21. The others: 24 with under 18 hours of readings or readings that failed our checks. |
| Mar 2023 | 20 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks. |
| Feb 2023 | 15 of 28 days measured; a month needs 20. The others: 12 missing from OpenAQ's archive, 1 with under 18 hours of readings or readings that failed our checks. |
| Jan 2023 | 10 of 31 days measured; a month needs 22. The others: 7 missing from OpenAQ's archive, 14 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.
Montgomery's worst months
| Month | US AQI | World rank |
|---|---|---|
| June 2023 | 6013.8 µg/m³ | 444thof 1,603 |
| March 2026 | 5712.3 µg/m³ | 1,154thof 2,971 |
| August 2023 | 5612.0 µg/m³ | 345thof 1,980 |
| May 2023 | 5511.5 µg/m³ | 303rdof 1,600 |
| July 2026 | 5511.5 µg/m³ | 996thof 2,784 |
| September 2023 | 5410.6 µg/m³ | 491stof 2,176 |
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.
Montgomery's worst days
| Day | US AQI | Episode |
|---|---|---|
| 14 Feb 2026 | 9432.1 µg/m³ | Alabama, Georgia and South Carolina, United States, February 2026 |
| 23 Feb 2025 | 9030.2 µg/m³ | – |
| 9 Mar 2023 | 9029.9 µg/m³ | – |
| 5 Mar 2026 | 9029.9 µg/m³ | – |
| 3 Mar 2026 | 8226.0 µg/m³ | – |
| 2 Aug 2024 | 8024.4 µg/m³ | – |
| 10 Jun 2023 | 7622.5 µg/m³ | – |
| 26 Feb 2025 | 7622.3 µg/m³ | – |
| 30 Jun 2023 | 7521.9 µg/m³ | – |
| 30 Jul 2026 | 7521.9 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, Montgomery, 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/montgomery/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.
Montgomery now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 23:07 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).