Springfield, IL Air Quality in November
Across 2019–2025, Springfield's November air quality had a median AQI of 38 (Good) over 207 monitored days in the Springfield, IL area. 0.0% of November days (0 of 207) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 100.0% of days. The cleanest November on record here was 2024 (median AQI 30, 0 days above 100) and the worst was 2022 (median 53, 0 days above 100, peak AQI 67).
- Good: 67.6%
- Moderate: 32.4%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Springfield
Today's main pollutant in Springfield is ground-level ozone (AQI 32). 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 is the air in Springfield in November?
Good on a typical day: median AQI 38 across 2019–2025, with 0.0% of November days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓67.6% of November days were Good (AQI 0–50), 32.4% Moderate (51–100).
- ✓0 days of 207 reached AQI 101+; the November peak was 78.
- ✓Best November: 2024; worst November: 2022.
Frequently asked questions
What is the air quality like in Springfield in November?▾
Across 2019–2025, the median daily AQI in Springfield in November was 38 (Good). 67.6% of days were Good, 32.4% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 207 monitored days in EPA's Air Quality System.
Is November a good time for outdoor exercise in Springfield?▾
A typical November day in Springfield sits in the Good range (median AQI 38), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of November days reached AQI 101+ in 2019–2025.
Which pollutant causes Springfield's November air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 100.0% of November days in Springfield. The highest November AQI recorded in 2019–2025 was 78 (Moderate), in 2022.
Springfield November air quality, year by year
Springfield November air quality by year (Springfield, IL, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 29 | 36 | 0 | 75 | PM2.5 |
| 2020 | 30 | 34 | 0 | 61 | PM2.5 |
| 2021 | 28 | 43 | 0 | 78 | PM2.5 |
| 2022worst | 30 | 53 | 0 | 67 | PM2.5 |
| 2023 | 30 | 42 | 0 | 60 | PM2.5 |
| 2024cleanest | 30 | 30 | 0 | 56 | PM2.5 |
| 2025 | 30 | 38 | 0 | 74 | PM2.5 |
What November air means in Springfield
A typical November day in Springfield sits in the Good range (median AQI 38), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of November days reached AQI 101+ in 2019–2025.
November's median AQI of 38 is below Springfield's whole-year median of 44, making it one of the area's cleaner periods. Nationally, the median November AQI across every EPA metro area (92,704 metro-days, 2019–2025) is 39, so Springfield runs in line with the national November norm; 0.0% of its November days topped AQI 100 versus 0.6% nationally (about the same).
November is part of Springfield's fall season (September, October, November); the fall page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Springfield
The latest EPA AirNow observation puts Springfield's AQI at 32 (O3). The figures above are multi-year month 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, IL), 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.