St. Petersburg Air Quality in July
Across 2019–2025, St. Petersburg's July air quality had a median AQI of 52 (Moderate) over 217 monitored days in the Tampa-St. Petersburg-Clearwater, FL area. 0.0% of July days (0 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 88.9% of days. The cleanest July on record here was 2022 (median AQI 48, 0 days above 100) and the worst was 2023 (median 59, 0 days above 100, peak AQI 87).
- Good: 41.5%
- Moderate: 58.5%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How is the air in St. Petersburg in July?
Moderate on a typical day: median AQI 52 across 2019–2025, with 0.0% of July days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓41.5% of July days were Good (AQI 0–50), 58.5% Moderate (51–100).
- ✓0 days of 217 reached AQI 101+; the July peak was 95.
- ✓Best July: 2022; worst July: 2023.
Frequently asked questions
What is the air quality like in St. Petersburg in July?▾
Across 2019–2025, the median daily AQI in St. Petersburg in July was 52 (Moderate). 41.5% of days were Good, 58.5% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is July a good time for outdoor exercise in St. Petersburg?▾
A typical July day in St. Petersburg is Moderate (median AQI 52): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of July 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 St. Petersburg's July air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 88.9% of July days in St. Petersburg. The highest July AQI recorded in 2019–2025 was 95 (Moderate), in 2023.
St. Petersburg July air quality, year by year
St. Petersburg July air quality by year (Tampa-St. Petersburg-Clearwater, FL, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 52 | 0 | 84 | PM2.5 |
| 2020 | 31 | 55 | 0 | 79 | PM2.5 |
| 2021 | 31 | 49 | 0 | 95 | PM2.5 |
| 2022cleanest | 31 | 48 | 0 | 70 | PM2.5 |
| 2023worst | 31 | 59 | 0 | 87 | PM2.5 |
| 2024 | 31 | 52 | 0 | 79 | PM2.5 |
| 2025 | 31 | 49 | 0 | 74 | PM2.5 |
What July air means in St. Petersburg
A typical July day in St. Petersburg is Moderate (median AQI 52): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of July days reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
July's median AQI of 52 is in line with St. Petersburg's whole-year median of 51, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median July AQI across every EPA metro area (103,858 metro-days, 2019–2025) is 47, so St. Petersburg runs above the national July norm; 0.0% of its July days topped AQI 100 versus 3.6% nationally (below average).
July is part of St. Petersburg's summer season (June, July, August); the summer page pools all three months.
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 month 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.