SmogRank / United States / Florida / Gainesville
Gainesville, month by month
Gainesville has a measured daily mean on 1,295 days since 4 January 2023. Its worst month was February 2024, at 51 US AQI (9.1 µg/m³), 812th of 2,486 cities on that month's world ranking. Its cleanest was September 2026, at 27 US AQI (4.9 µg/m³). 2025 averaged 36 US AQI (6.4 µg/m³), against 36 US AQI (6.5 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 |
|---|---|
| Oct 2024 | 20 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks. |
| Oct 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. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Gainesville's worst months
| Month | US AQI | World rank |
|---|---|---|
| February 2024 | 519.1 µg/m³ | 812thof 2,486 |
| May 2026 | 478.5 µg/m³ | 1,136thof 2,874 |
| March 2023 | 478.4 µg/m³ | 438thof 911 |
| July 2026 | 468.2 µg/m³ | 1,821stof 2,784 |
| June 2023 | 447.9 µg/m³ | 1,123rdof 1,603 |
| July 2023 | 447.9 µg/m³ | 867thof 1,432 |
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.
Gainesville's worst days
| Day | US AQI | Episode |
|---|---|---|
| 5 May 2026 | 12645.5 µg/m³ | – |
| 7 Feb 2024 | 9432.2 µg/m³ | – |
| 3 Oct 2023 | 9029.9 µg/m³ | South-eastern United States, October 2023 |
| 4 May 2026 | 8627.9 µg/m³ | – |
| 21 Apr 2026 | 7722.9 µg/m³ | – |
| 2 Mar 2023 | 7320.8 µg/m³ | – |
| 24 Feb 2023 | 7119.9 µg/m³ | – |
| 30 Jun 2023 | 7019.2 µg/m³ | – |
| 4 Oct 2023 | 6919.0 µg/m³ | South-eastern United States, October 2023 |
| 6 Jun 2025 | 6918.9 µg/m³ | – |
Daily means, the highest since 4 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, Gainesville, United States, 4 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/gainesville/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.
Gainesville now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 19:07 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).