Springfield, MA Air Quality in Fall
Across 2019–2025, Springfield's fall (September–November) air quality had a median AQI of 39 (Good) over 636 monitored days in the Springfield, MA area. 0.0% of fall days (0 of 636) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 63.5% of days. The cleanest fall on record here was 2024 (median AQI 34, 0 days above 100) and the worst was 2022 (median 50, 0 days above 100, peak AQI 74).
- Good: 74.5%
- Moderate: 25.5%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Improve Indoor Air Quality
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How is the air in Springfield in fall?
Good on a typical day: median AQI 39 across 2019–2025, with 0.0% of fall days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓74.5% of fall days were Good (AQI 0–50), 25.5% Moderate (51–100).
- ✓0 days of 636 reached AQI 101+; the fall peak was 98.
- ✓Cleanest month: October; worst month: November.
Frequently asked questions
What is the air quality like in Springfield in fall?▾
Across 2019–2025, the median daily AQI in Springfield in fall was 39 (Good). 74.5% of days were Good, 25.5% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 636 monitored days in EPA's Air Quality System.
Is fall a good time for outdoor exercise in Springfield?▾
A typical fall day in Springfield sits in the Good range (median AQI 39), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of fall days reached AQI 101+ in 2019–2025.
Which pollutant causes Springfield's fall air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 63.5% of fall days in Springfield. The highest fall AQI recorded in 2019–2025 was 98 (Moderate), in 2022.
Springfield fall air quality, year by year
Springfield fall air quality by year (Springfield, MA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 90 | 39 | 0 | 90 | PM2.5 |
| 2020 | 91 | 40 | 0 | 96 | PM2.5 |
| 2021 | 91 | 40 | 0 | 75 | PM2.5 |
| 2022worst | 91 | 50 | 0 | 74 | PM2.5 |
| 2023 | 91 | 36 | 0 | 98 | PM2.5 |
| 2024cleanest | 91 | 34 | 0 | 64 | O3 |
| 2025 | 91 | 34 | 0 | 77 | O3 |
What fall air means in Springfield
A typical fall day in Springfield sits in the Good range (median AQI 39), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of fall days reached AQI 101+ in 2019–2025.
Fall's median AQI of 39 is below Springfield's whole-year median of 44, making it one of the area's cleaner periods. Nationally, the median Fall AQI across every EPA metro area (296,275 metro-days, 2019–2025) is 40, so Springfield runs in line with the national Fall norm; 0.0% of its Fall days topped AQI 100 versus 1.5% nationally (below average).
Within the season, October is the cleanest month (median AQI 37, 0.0% of days above 100) and November the worst (median 40, 0.0% above 100).
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 season 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.