Pittsburgh Air Quality in July
Across 2019–2025, Pittsburgh's July air quality had a median AQI of 65 (Moderate) over 217 monitored days in the Pittsburgh, PA area. 5.6% of July days (12 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 70.0% of days. The cleanest July on record here was 2022 (median AQI 58, 0 days above 100) and the worst was 2024 (median 71, 4 days above 100, peak AQI 129).
- Good: 11.5%
- Moderate: 82.9%
- Unhealthy for Sensitive Groups: 5.1%
- Unhealthy or worse: 0.5%
Extra Protection for Pittsburgh Homes
Air quality in Pittsburgh is moderate (AQI 56), with fine particles (PM2.5) the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
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How is the air in Pittsburgh in July?
Moderate on a typical day: median AQI 65 across 2019–2025, with 5.6% of July days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓11.5% of July days were Good (AQI 0–50), 82.9% Moderate (51–100).
- ✓12 days of 217 reached AQI 101+; the July peak was 154.
- ✓Best July: 2022; worst July: 2024.
Frequently asked questions
What is the air quality like in Pittsburgh in July?▾
Across 2019–2025, the median daily AQI in Pittsburgh in July was 65 (Moderate). 11.5% of days were Good, 82.9% Moderate, and 5.6% 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 Pittsburgh?▾
A typical July day in Pittsburgh is Moderate (median AQI 65): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 18 of July days (5.6%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Pittsburgh's July air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 70.0% of July days in Pittsburgh. The highest July AQI recorded in 2019–2025 was 154 (Unhealthy), in 2024.
Pittsburgh July air quality, year by year
Pittsburgh July air quality by year (Pittsburgh, PA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 69 | 0 | 93 | PM2.5 |
| 2020 | 31 | 64 | 4 | 122 | PM2.5 |
| 2021 | 31 | 60 | 3 | 154 | PM2.5 |
| 2022cleanest | 31 | 58 | 0 | 89 | PM2.5 |
| 2023 | 31 | 66 | 1 | 148 | PM2.5 |
| 2024worst | 31 | 71 | 4 | 129 | O3 |
| 2025 | 31 | 67 | 0 | 97 | PM2.5 |
What July air means in Pittsburgh
A typical July day in Pittsburgh is Moderate (median AQI 65): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 18 of July days (5.6%) 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 65 is above Pittsburgh's whole-year median of 58, making it one of the area's dirtier periods. Nationally, the median July AQI across every EPA metro area (103,858 metro-days, 2019–2025) is 47, so Pittsburgh runs above the national July norm; 5.6% of its July days topped AQI 100 versus 3.6% nationally (above average).
July is part of Pittsburgh's summer season (June, July, August); the summer page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Pittsburgh
The latest EPA AirNow observation puts Pittsburgh's AQI at 56 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Pittsburgh air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Pittsburgh, PA), 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.