San Antonio Air Quality in June
Across 2019–2025, San Antonio's June air quality had a median AQI of 58 (Moderate) over 210 monitored days in the San Antonio-New Braunfels, TX area. 5.3% of June days (11 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 June on record here was 2025 (median AQI 57, 0 days above 100) and the worst was 2024 (median 58, 3 days above 100, peak AQI 143).
- Good: 24.3%
- Moderate: 70.5%
- Unhealthy for Sensitive Groups: 4.8%
- Unhealthy or worse: 0.5%
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 June?
Moderate on a typical day: median AQI 58 across 2019–2025, with 5.3% of June days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓24.3% of June days were Good (AQI 0–50), 70.5% Moderate (51–100).
- ✓11 days of 210 reached AQI 101+; the June peak was 160.
- ✓Best June: 2025; worst June: 2024.
Frequently asked questions
What is the air quality like in San Antonio in June?▾
Across 2019–2025, the median daily AQI in San Antonio in June was 58 (Moderate). 24.3% of days were Good, 70.5% Moderate, and 5.3% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is June a good time for outdoor exercise in San Antonio?▾
A typical June day in San Antonio is Moderate (median AQI 58): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 19 of June days (5.3%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes San Antonio's June air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 72.9% of June days in San Antonio. The highest June AQI recorded in 2019–2025 was 160 (Unhealthy), in 2024.
San Antonio June air quality, year by year
San Antonio June 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 |
|---|---|---|---|---|---|
| 2019 | 30 | 61 | 2 | 126 | PM2.5 |
| 2020 | 30 | 61 | 1 | 160 | PM2.5 |
| 2021 | 30 | 55 | 1 | 108 | PM2.5 |
| 2022 | 30 | 58 | 3 | 129 | PM2.5 |
| 2023 | 30 | 60 | 1 | 119 | PM2.5 |
| 2024worst | 30 | 58 | 3 | 143 | PM2.5 |
| 2025cleanest | 30 | 57 | 0 | 68 | PM2.5 |
What June air means in San Antonio
A typical June day in San Antonio is Moderate (median AQI 58): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 19 of June days (5.3%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
June's median AQI of 58 is in line with San Antonio's whole-year median of 55, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median June AQI across every EPA metro area (100,635 metro-days, 2019–2025) is 46, so San Antonio runs above the national June norm; 5.3% of its June days topped AQI 100 versus 3.7% nationally (above average).
June is part of San Antonio's summer season (June, July, August); the summer 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.