Erie Air Quality in 2023
In 2023, Erie's air quality (Erie, PA area) had a median daily AQI of 42 (Good) across 365 monitored days. 9 days (2.5%) reached Unhealthy for Sensitive Groups or worse, 240 were Good, and the year's peak AQI was 180 (Unhealthy). Fine particulate matter (PM2.5) set the daily AQI on 212 of those days. The cleanest month of 2023 was October (median AQI 32, 0 days above 100) and the worst was June (median 81, 7 days above 100, peak 180).
- Good: 65.8%
- Moderate: 31.8%
- Unhealthy for Sensitive Groups: 1.6%
- Unhealthy or worse: 0.8%
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How was Erie's air quality in 2023?
Good on a typical day: median AQI 42, with 9 days above AQI 100 out of 365 monitored — the 7th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2023: 180 (Unhealthy).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 212 days.
- ✓Cleanest month: October; worst: June.
Frequently asked questions
What was the average AQI in Erie in 2023?▾
EPA's Air Quality System puts Erie's (Erie, PA) median daily AQI for 2023 at 42, which is Good. 9 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 180.
Which month had the worst air quality in Erie in 2023?▾
The cleanest month of 2023 was October (median AQI 32, 0 days above 100) and the worst was June (median 81, 7 days above 100, peak 180).
Was 2023 a good or bad year for Erie's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2023 ranks 7th cleanest by days above AQI 100 — the worst year on record here. 2023's median of 42 is above the area's typical annual median of 38.
Erie month by month in 2023
Erie air quality month by month, 2023 (Erie, PA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 45 | 0 | 75 | PM2.5 |
| February | 28 | 43 | 0 | 64 | PM2.5 |
| March | 31 | 41 | 0 | 64 | PM2.5 |
| April | 30 | 47 | 0 | 82 | PM2.5 |
| May | 31 | 41 | 1 | 101 | PM2.5 |
| Juneworst | 30 | 81 | 7 | 180 | PM2.5 |
| July | 31 | 51 | 1 | 152 | O3 |
| August | 31 | 43 | 0 | 85 | O3 |
| September | 30 | 40 | 0 | 61 | PM2.5 |
| Octobercleanest | 31 | 32 | 0 | 53 | O3 |
| November | 30 | 35 | 0 | 58 | O3 |
| December | 31 | 35 | 0 | 55 | PM2.5 |
How 2023 compares
Among the 7 years EPA has published for the area (2019–2025), 2023 ranks 7th cleanest by days above AQI 100 — the worst year on record here.
2023's median of 42 is above the area's typical annual median of 38.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Erie
The latest EPA AirNow observation puts Erie's AQI at 23 (PM2.5). The figures above are multi-year annual 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.