SmogRank / United States / Georgia / Augusta
Augusta, month by month
Augusta has a measured daily mean on 1,248 days since 11 January 2023. Its worst month was February 2025, at 67 US AQI (17.6 µg/m³), 716th of 2,633 cities on that month's world ranking. Its cleanest was October 2025, at 36 US AQI (6.5 µg/m³). 2025 averaged 54 US AQI (10.5 µg/m³), against 53 US AQI (10.3 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
4 months
| Month | Why |
|---|---|
| Jul 2026 | 20 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks. |
| Apr 2023 | 3 of 30 days measured; a month needs 21. The others: 27 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. |
| Jan 2023 | 7 of 31 days measured; a month needs 22. The others: 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.
Augusta's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| February 2025 | 6717.6 µg/m³ | 716thof 2,633 | Georgia, South Carolina and Alabama, United States, February 2025 |
| October 2024 | 6214.9 µg/m³ | 258thof 2,020 | – |
| December 2024 | 6114.5 µg/m³ | 498thof 2,616 | – |
| June 2023 | 6114.4 µg/m³ | 411thof 1,603 | Eastern United States and Canada, June and July 2023 Eastern United States and Canada, May and June 2023 |
| January 2026 | 6014.0 µg/m³ | 810thof 2,617 | – |
| March 2026 | 5913.6 µg/m³ | 992ndof 2,971 | Eastern United States, March 2026 South-eastern United States, March 2026 |
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.
Augusta's worst days
| Day | US AQI | Episode |
|---|---|---|
| 13 Jan 2026 | 13348.6 µg/m³ | – |
| 25 Feb 2025 | 13047.2 µg/m³ | – |
| 17 Dec 2025 | 12344.4 µg/m³ | – |
| 22 Apr 2026 | 11239.9 µg/m³ | Georgia, South Carolina and Florida, United States, April 2026 |
| 21 Mar 2026 | 11039.1 µg/m³ | South-eastern United States, March 2026 |
| 20 Feb 2024 | 10637.4 µg/m³ | – |
| 23 Feb 2025 | 10035.4 µg/m³ | – |
| 13 Jan 2025 | 9633.5 µg/m³ | – |
| 14 Mar 2024 | 9633.3 µg/m³ | Eastern United States, March 2024 |
| 7 Dec 2024 | 9633.1 µg/m³ | – |
Daily means, the highest since 11 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, Augusta, United States, 11 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/augusta/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.
Augusta 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).