St. Petersburg Air Quality in 2025
In 2025, St. Petersburg's air quality (Tampa-St. Petersburg-Clearwater, FL area) had a median daily AQI of 50 (Good) across 365 monitored days. 2 days (0.5%) reached Unhealthy for Sensitive Groups or worse, 184 were Good, and the year's peak AQI was 129 (Unhealthy for Sensitive Groups). Fine particulate matter (PM2.5) set the daily AQI on 220 of those days. The cleanest month of 2025 was October (median AQI 43, 0 days above 100) and the worst was April (median 56, 1 day above 100, peak 129).
- Good: 50.4%
- Moderate: 49.0%
- Unhealthy for Sensitive Groups: 0.5%
- Unhealthy or worse: 0.0%
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How was St. Petersburg's air quality in 2025?
Good on a typical day: median AQI 50, with 2 days above AQI 100 out of 365 monitored — the 3rd cleanest of 7 years on record for the area.
- ✓Peak AQI in 2025: 129 (Unhealthy for Sensitive Groups).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 220 days.
- ✓Cleanest month: October; worst: April.
Frequently asked questions
What was the average AQI in St. Petersburg in 2025?▾
EPA's Air Quality System puts St. Petersburg's (Tampa-St. Petersburg-Clearwater, FL) median daily AQI for 2025 at 50, which is Good. 2 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 129.
Which month had the worst air quality in St. Petersburg in 2025?▾
The cleanest month of 2025 was October (median AQI 43, 0 days above 100) and the worst was April (median 56, 1 day above 100, peak 129).
Was 2025 a good or bad year for St. Petersburg's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2025 ranks 3rd cleanest by days above AQI 100. 2025's median of 50 is in line with the area's typical annual median of 51.
St. Petersburg month by month in 2025
St. Petersburg air quality month by month, 2025 (Tampa-St. Petersburg-Clearwater, FL, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 49 | 0 | 62 | PM2.5 |
| February | 28 | 52 | 0 | 66 | PM2.5 |
| March | 31 | 55 | 0 | 87 | PM2.5 |
| Aprilworst | 30 | 56 | 1 | 129 | O3 |
| May | 31 | 49 | 0 | 93 | O3 |
| June | 30 | 51 | 0 | 69 | PM2.5 |
| July | 31 | 49 | 0 | 74 | PM2.5 |
| August | 31 | 39 | 1 | 122 | O3 |
| September | 30 | 44 | 0 | 77 | O3 |
| Octobercleanest | 31 | 43 | 0 | 67 | O3 |
| November | 30 | 53 | 0 | 87 | PM2.5 |
| December | 31 | 46 | 0 | 64 | PM2.5 |
How 2025 compares
Among the 7 years EPA has published for the area (2019–2025), 2025 ranks 3rd cleanest by days above AQI 100.
2025's median of 50 is in line with the area's typical annual median of 51.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in St. Petersburg
The latest EPA AirNow observation puts St. Petersburg's AQI at 38 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current St. Petersburg air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Tampa-St. Petersburg-Clearwater, 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.