San Antonio Air Quality in November
Across 2019–2025, San Antonio's November air quality had a median AQI of 49 (Good) over 210 monitored days in the San Antonio-New Braunfels, TX area. 0.0% of November days (0 of 210) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 72.9% of days. The cleanest November on record here was 2025 (median AQI 41, 0 days above 100) and the worst was 2019 (median 54, 0 days above 100, peak AQI 76).
- Good: 52.9%
- Moderate: 47.1%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Extra Protection for San Antonio Homes
Air quality in San Antonio is moderate (AQI 52), with fine particles (PM2.5) the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
Recommended: Coway AP-1512HH Mighty — True HEPA + carbon · CADR ~246 CFM · rooms up to 361 sq ft
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How is the air in San Antonio in November?
Good on a typical day: median AQI 49 across 2019–2025, with 0.0% of November days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓52.9% of November days were Good (AQI 0–50), 47.1% Moderate (51–100).
- ✓0 days of 210 reached AQI 101+; the November peak was 97.
- ✓Best November: 2025; worst November: 2019.
Frequently asked questions
What is the air quality like in San Antonio in November?▾
Across 2019–2025, the median daily AQI in San Antonio in November was 49 (Good). 52.9% of days were Good, 47.1% Moderate, and 0.0% 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 San Antonio?▾
A typical November day in San Antonio sits in the Good range (median AQI 49), 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 San Antonio's November air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 72.9% of November days in San Antonio. The highest November AQI recorded in 2019–2025 was 97 (Moderate), in 2019.
San Antonio November air quality, year by year
San Antonio November air quality by year (San Antonio-New Braunfels, TX, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019worst | 30 | 54 | 0 | 76 | PM2.5 |
| 2020 | 30 | 52 | 0 | 69 | PM2.5 |
| 2021 | 30 | 51 | 0 | 71 | PM2.5 |
| 2022 | 30 | 48 | 0 | 64 | PM2.5 |
| 2023 | 30 | 50 | 0 | 68 | PM2.5 |
| 2024 | 30 | 46 | 0 | 62 | PM2.5 |
| 2025cleanest | 30 | 41 | 0 | 97 | O3 |
What November air means in San Antonio
A typical November day in San Antonio sits in the Good range (median AQI 49), 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 49 is below San Antonio's whole-year median of 55, 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 San Antonio runs above the national November norm; 0.0% of its November days topped AQI 100 versus 0.6% nationally (about the same).
November is part of San Antonio's fall season (September, October, November); the fall page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in San Antonio
The latest EPA AirNow observation puts San Antonio's AQI at 52 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current San Antonio air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (San Antonio-New Braunfels, TX), 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.