Erie Air Quality in 2020
In 2020, Erie's air quality (Erie, PA area) had a median daily AQI of 36 (Good) across 363 monitored days. 0 days (0.0%) reached Unhealthy for Sensitive Groups or worse, 298 were Good, and the year's peak AQI was 87 (Moderate). Ground-level ozone set the daily AQI on 201 of those days. The cleanest month of 2020 was October (median AQI 31, 0 days above 100) and the worst was February (median 47, 0 days above 100, peak 69).
- Good: 82.1%
- Moderate: 17.9%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How was Erie's air quality in 2020?
Good on a typical day: median AQI 36, with 0 days above AQI 100 out of 363 monitored — the 1st cleanest of 7 years on record for the area.
- ✓Peak AQI in 2020: 87 (Moderate).
- ✓Ground-level ozone was the main pollutant on 201 days.
- ✓Cleanest month: October; worst: February.
Frequently asked questions
What was the average AQI in Erie in 2020?▾
EPA's Air Quality System puts Erie's (Erie, PA) median daily AQI for 2020 at 36, which is Good. 0 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 87.
Which month had the worst air quality in Erie in 2020?▾
The cleanest month of 2020 was October (median AQI 31, 0 days above 100) and the worst was February (median 47, 0 days above 100, peak 69).
Was 2020 a good or bad year for Erie's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2020 ranks 1st cleanest by days above AQI 100 — the best year on record here. 2020's median of 36 is in line with the area's typical annual median of 38.
Erie month by month in 2020
Erie air quality month by month, 2020 (Erie, PA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 33 | 0 | 64 | O3 |
| Februaryworst | 29 | 47 | 0 | 69 | PM2.5 |
| March | 31 | 36 | 0 | 58 | PM2.5 |
| April | 30 | 39 | 0 | 54 | O3 |
| May | 31 | 36 | 0 | 55 | O3 |
| June | 30 | 43 | 0 | 67 | O3 |
| July | 31 | 43 | 0 | 84 | O3 |
| August | 31 | 40 | 0 | 74 | O3 |
| September | 30 | 36 | 0 | 87 | O3 |
| Octobercleanest | 31 | 31 | 0 | 55 | O3 |
| November | 30 | 38 | 0 | 77 | PM2.5 |
| December | 28 | 33 | 0 | 67 | PM2.5 |
How 2020 compares
Among the 7 years EPA has published for the area (2019–2025), 2020 ranks 1st cleanest by days above AQI 100 — the best year on record here.
2020's median of 36 is in line with 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.