Erie Air Quality in July
Across 2019–2025, Erie's July air quality had a median AQI of 47 (Good) over 217 monitored days in the Erie, PA area. 0.5% of July days (1 of 217) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 49.8% of days. The cleanest July on record here was 2020 (median AQI 43, 0 days above 100) and the worst was 2023 (median 51, 1 day above 100, peak AQI 152).
- Good: 59.9%
- Moderate: 39.6%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.5%
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How is the air in Erie in July?
Good on a typical day: median AQI 47 across 2019–2025, with 0.5% of July days above AQI 100. Ground-level ozone is the main driver.
- ✓59.9% of July days were Good (AQI 0–50), 39.6% Moderate (51–100).
- ✓1 day of 217 reached AQI 101+; the July peak was 152.
- ✓Best July: 2020; worst July: 2023.
Frequently asked questions
What is the air quality like in Erie in July?▾
Across 2019–2025, the median daily AQI in Erie in July was 47 (Good). 59.9% of days were Good, 39.6% Moderate, and 0.5% 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 Erie?▾
A typical July day in Erie sits in the Good range (median AQI 47), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of July days reached AQI 101+ in 2019–2025.
Which pollutant causes Erie's July air quality problems?▾
Ground-level ozone set the daily AQI on 49.8% of July days in Erie. The highest July AQI recorded in 2019–2025 was 152 (Unhealthy), in 2023.
Erie July air quality, year by year
Erie July air quality by year (Erie, PA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 46 | 0 | 93 | PM2.5 |
| 2020cleanest | 31 | 43 | 0 | 84 | O3 |
| 2021 | 31 | 50 | 0 | 92 | PM2.5 |
| 2022 | 31 | 44 | 0 | 64 | PM2.5 |
| 2023worst | 31 | 51 | 1 | 152 | O3 |
| 2024 | 31 | 47 | 0 | 77 | O3 |
| 2025 | 31 | 49 | 0 | 95 | PM2.5 |
What July air means in Erie
A typical July day in Erie sits in the Good range (median AQI 47), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of July days reached AQI 101+ in 2019–2025.
July's median AQI of 47 is above Erie's whole-year median of 38, 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 Erie runs in line with the national July norm; 0.5% of its July days topped AQI 100 versus 3.6% nationally (below average).
July is part of Erie's summer season (June, July, August); the summer page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Erie
The latest EPA AirNow observation puts Erie's AQI at 40 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Erie air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Erie, 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.