SmogRank / United States / Florida / Jacksonville
Jacksonville, month by month
Jacksonville has a measured daily mean on 1,367 days since 1 January 2023. Its worst month was January 2023, at 52 US AQI (9.8 µg/m³), 500th of 1,261 cities on that month's world ranking. Its cleanest was September 2026, at 29 US AQI (5.2 µg/m³). 2025 averaged 42 US AQI (7.5 µg/m³), against 40 US AQI (7.2 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
Jacksonville's worst months
| Month | US AQI | World rank |
|---|---|---|
| January 2023 | 529.8 µg/m³ | 500thof 1,261 |
| February 2025 | 529.7 µg/m³ | 1,234thof 2,633 |
| June 2023 | 529.6 µg/m³ | 856thof 1,603 |
| January 2025 | 519.2 µg/m³ | 1,141stof 2,474 |
| July 2023 | 509.0 µg/m³ | 763rdof 1,432 |
| February 2024 | 509.0 µg/m³ | 839thof 2,486 |
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.
Jacksonville's worst days
| Day | US AQI | Episode |
|---|---|---|
| 7 May 2026 | 12545.2 µg/m³ | – |
| 29 Jan 2025 | 9733.9 µg/m³ | – |
| 3 Oct 2023 | 9733.6 µg/m³ | South-eastern United States, October 2023 |
| 3 Mar 2023 | 8024.9 µg/m³ | – |
| 21 Mar 2024 | 8024.5 µg/m³ | – |
| 26 Feb 2025 | 7924.2 µg/m³ | – |
| 2 Feb 2024 | 7823.5 µg/m³ | – |
| 18 Jul 2023 | 7722.9 µg/m³ | – |
| 31 Dec 2023 | 7521.8 µg/m³ | – |
| 6 Nov 2023 | 7321.0 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, Jacksonville, 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/jacksonville/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.
Jacksonville 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).