Jacksonville Air Quality in March
Across 2019–2025, Jacksonville's March air quality had a median AQI of 53 (Moderate) over 217 monitored days in the Jacksonville, FL area. 0.0% of March days (0 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 73.7% of days. The cleanest March on record here was 2022 (median AQI 51, 0 days above 100) and the worst was 2020 (median 55, 0 days above 100, peak AQI 66).
- Good: 34.1%
- Moderate: 65.9%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Improve Indoor Air Quality
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How is the air in Jacksonville in March?
Moderate on a typical day: median AQI 53 across 2019–2025, with 0.0% of March days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓34.1% of March days were Good (AQI 0–50), 65.9% Moderate (51–100).
- ✓0 days of 217 reached AQI 101+; the March peak was 94.
- ✓Best March: 2022; worst March: 2020.
Frequently asked questions
What is the air quality like in Jacksonville in March?▾
Across 2019–2025, the median daily AQI in Jacksonville in March was 53 (Moderate). 34.1% of days were Good, 65.9% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is March a good time for outdoor exercise in Jacksonville?▾
A typical March day in Jacksonville is Moderate (median AQI 53): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of March days reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Jacksonville's March air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 73.7% of March days in Jacksonville. The highest March AQI recorded in 2019–2025 was 94 (Moderate), in 2020.
Jacksonville March air quality, year by year
Jacksonville March air quality by year (Jacksonville, FL, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 53 | 0 | 87 | PM2.5 |
| 2020worst | 31 | 55 | 0 | 66 | PM2.5 |
| 2021 | 31 | 54 | 0 | 64 | PM2.5 |
| 2022cleanest | 31 | 51 | 0 | 90 | PM2.5 |
| 2023 | 31 | 52 | 0 | 85 | PM2.5 |
| 2024 | 31 | 51 | 0 | 94 | PM2.5 |
| 2025 | 31 | 53 | 0 | 81 | PM2.5 |
What March air means in Jacksonville
A typical March day in Jacksonville is Moderate (median AQI 53): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of March days reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
March's median AQI of 53 is in line with Jacksonville's whole-year median of 52, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median March AQI across every EPA metro area (102,455 metro-days, 2019–2025) is 42, so Jacksonville runs above the national March norm; 0.0% of its March days topped AQI 100 versus 0.4% nationally (about the same).
March is part of Jacksonville's spring season (March, April, May); the spring page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Jacksonville
The latest EPA AirNow observation puts Jacksonville's AQI at 34 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Jacksonville air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Jacksonville, FL), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.