Baltimore Air Quality in November
Across 2019–2025, Baltimore's November air quality had a median AQI of 51 (Moderate) over 210 monitored days in the Baltimore-Columbia-Towson, MD area. 0.5% of November days (1 of 210) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 88.1% of days. The cleanest November on record here was 2023 (median AQI 47, 0 days above 100) and the worst was 2024 (median 42, 1 day above 100, peak AQI 112).
- Good: 49.5%
- Moderate: 50.0%
- Unhealthy for Sensitive Groups: 0.5%
- Unhealthy or worse: 0.0%
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How is the air in Baltimore in November?
Moderate on a typical day: median AQI 51 across 2019–2025, with 0.5% of November days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓49.5% of November days were Good (AQI 0–50), 50.0% Moderate (51–100).
- ✓1 day of 210 reached AQI 101+; the November peak was 112.
- ✓Best November: 2023; worst November: 2024.
Frequently asked questions
What is the air quality like in Baltimore in November?▾
Across 2019–2025, the median daily AQI in Baltimore in November was 51 (Moderate). 49.5% of days were Good, 50.0% Moderate, and 0.5% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is November a good time for outdoor exercise in Baltimore?▾
A typical November day in Baltimore is Moderate (median AQI 51): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of November days reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Baltimore's November air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 88.1% of November days in Baltimore. The highest November AQI recorded in 2019–2025 was 112 (Unhealthy for Sensitive Groups), in 2024.
Baltimore November air quality, year by year
Baltimore November air quality by year (Baltimore-Columbia-Towson, MD, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 30 | 52 | 0 | 72 | PM2.5 |
| 2020 | 30 | 52 | 0 | 85 | PM2.5 |
| 2021 | 30 | 55 | 0 | 80 | PM2.5 |
| 2022 | 30 | 50 | 0 | 74 | PM2.5 |
| 2023cleanest | 30 | 47 | 0 | 66 | PM2.5 |
| 2024worst | 30 | 42 | 1 | 112 | PM2.5 |
| 2025 | 30 | 52 | 0 | 74 | PM2.5 |
What November air means in Baltimore
A typical November day in Baltimore is Moderate (median AQI 51): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of November days reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
November's median AQI of 51 is in line with Baltimore's whole-year median of 49, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median November AQI across every EPA metro area (92,704 metro-days, 2019–2025) is 39, so Baltimore runs above the national November norm; 0.5% of its November days topped AQI 100 versus 0.6% nationally (about the same).
November is part of Baltimore's fall season (September, October, November); the fall page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Baltimore
The latest EPA AirNow observation puts Baltimore's AQI at 43 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Baltimore air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Baltimore-Columbia-Towson, MD), 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.