Springfield, MA Air Quality in 2025
In 2025, Springfield's air quality (Springfield, MA area) had a median daily AQI of 40 (Good) across 365 monitored days. 5 days (1.4%) reached Unhealthy for Sensitive Groups or worse, 279 were Good, and the year's peak AQI was 124 (Unhealthy for Sensitive Groups). Ground-level ozone set the daily AQI on 239 of those days. The cleanest month of 2025 was October (median AQI 30, 0 days above 100) and the worst was June (median 52, 2 days above 100, peak 115).
- Good: 76.4%
- Moderate: 22.2%
- Unhealthy for Sensitive Groups: 1.4%
- Unhealthy or worse: 0.0%
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How was Springfield's air quality in 2025?
Good on a typical day: median AQI 40, with 5 days above AQI 100 out of 365 monitored — the 6th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2025: 124 (Unhealthy for Sensitive Groups).
- ✓Ground-level ozone was the main pollutant on 239 days.
- ✓Cleanest month: October; worst: June.
Frequently asked questions
What was the average AQI in Springfield in 2025?▾
EPA's Air Quality System puts Springfield's (Springfield, MA) median daily AQI for 2025 at 40, which is Good. 5 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 124.
Which month had the worst air quality in Springfield in 2025?▾
The cleanest month of 2025 was October (median AQI 30, 0 days above 100) and the worst was June (median 52, 2 days above 100, peak 115).
Was 2025 a good or bad year for Springfield's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2025 ranks 6th cleanest by days above AQI 100. 2025's median of 40 is below the area's typical annual median of 44.
Springfield month by month in 2025
Springfield air quality month by month, 2025 (Springfield, MA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 38 | 0 | 60 | O3 |
| February | 28 | 39 | 0 | 65 | O3 |
| March | 31 | 42 | 0 | 53 | O3 |
| April | 30 | 44 | 0 | 97 | O3 |
| May | 31 | 36 | 0 | 67 | O3 |
| Juneworst | 30 | 52 | 2 | 115 | PM2.5 |
| July | 31 | 48 | 1 | 122 | O3 |
| August | 31 | 46 | 2 | 124 | O3 |
| September | 30 | 39 | 0 | 52 | O3 |
| Octobercleanest | 31 | 30 | 0 | 77 | O3 |
| November | 30 | 34 | 0 | 69 | O3 |
| December | 31 | 38 | 0 | 65 | PM2.5 |
How 2025 compares
Among the 7 years EPA has published for the area (2019–2025), 2025 ranks 6th cleanest by days above AQI 100.
2025's median of 40 is below the area's typical annual median of 44.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Springfield
The latest EPA AirNow observation puts Springfield's AQI at 33 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Springfield air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Springfield, MA), 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.