Erie Air Quality in 2024
In 2024, Erie's air quality (Erie, PA area) had a median daily AQI of 38 (Good) across 366 monitored days. 0 days (0.0%) reached Unhealthy for Sensitive Groups or worse, 295 were Good, and the year's peak AQI was 93 (Moderate). Ground-level ozone set the daily AQI on 253 of those days. The cleanest month of 2024 was November (median AQI 32, 0 days above 100) and the worst was July (median 47, 0 days above 100, peak 77).
- Good: 80.6%
- Moderate: 19.4%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Erie
Today's main pollutant in Erie is ground-level ozone (AQI 21). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Recommended: Levoit Core 300 — True HEPA + activated carbon · CADR ~141 CFM · rooms up to 219 sq ft
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How was Erie's air quality in 2024?
Good on a typical day: median AQI 38, with 0 days above AQI 100 out of 366 monitored — the 4th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2024: 93 (Moderate).
- ✓Ground-level ozone was the main pollutant on 253 days.
- ✓Cleanest month: November; worst: July.
Frequently asked questions
What was the average AQI in Erie in 2024?▾
EPA's Air Quality System puts Erie's (Erie, PA) median daily AQI for 2024 at 38, which is Good. 0 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 93.
Which month had the worst air quality in Erie in 2024?▾
The cleanest month of 2024 was November (median AQI 32, 0 days above 100) and the worst was July (median 47, 0 days above 100, peak 77).
Was 2024 a good or bad year for Erie's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2024 ranks 4th cleanest by days above AQI 100. 2024's median of 38 is in line with the area's typical annual median of 38.
Erie month by month in 2024
Erie air quality month by month, 2024 (Erie, PA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 34 | 0 | 59 | PM2.5 |
| February | 29 | 42 | 0 | 65 | PM2.5 |
| March | 31 | 38 | 0 | 65 | O3 |
| April | 30 | 41 | 0 | 56 | O3 |
| May | 31 | 43 | 0 | 77 | O3 |
| June | 30 | 45 | 0 | 93 | O3 |
| Julyworst | 31 | 47 | 0 | 77 | O3 |
| August | 31 | 42 | 0 | 90 | O3 |
| September | 30 | 42 | 0 | 67 | O3 |
| October | 31 | 33 | 0 | 64 | O3 |
| Novembercleanest | 30 | 32 | 0 | 60 | O3 |
| December | 31 | 34 | 0 | 56 | PM2.5 |
How 2024 compares
Among the 7 years EPA has published for the area (2019–2025), 2024 ranks 4th cleanest by days above AQI 100.
2024's median of 38 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 21 (O3). 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.