Dallas Air Quality in Summer
Across 2019–2025, Dallas's summer (June–August) air quality had a median AQI of 71 (Moderate) over 644 monitored days in the Dallas-Fort Worth-Arlington, TX area. 23.7% of summer days (153 of 644) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 60.4% of days. The cleanest summer on record here was 2025 (median AQI 64, 14 days above 100) and the worst was 2024 (median 72, 33 days above 100, peak AQI 203).
- Good: 11.3%
- Moderate: 64.9%
- Unhealthy for Sensitive Groups: 20.0%
- Unhealthy or worse: 3.7%
Extra Protection for Dallas Homes
Air quality in Dallas is moderate (AQI 55), 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 Dallas in summer?
Moderate on a typical day: median AQI 71 across 2019–2025, with 23.7% of summer days above AQI 100. Ground-level ozone is the main driver.
- ✓11.3% of summer days were Good (AQI 0–50), 64.9% Moderate (51–100).
- ✓153 days of 644 reached AQI 101+; the summer peak was 209.
- ✓Cleanest month: July; worst month: August.
Frequently asked questions
What is the air quality like in Dallas in summer?▾
Across 2019–2025, the median daily AQI in Dallas in summer was 71 (Moderate). 11.3% of days were Good, 64.9% Moderate, and 23.7% reached Unhealthy for Sensitive Groups or worse, based on 644 monitored days in EPA's Air Quality System.
Is summer a good time for outdoor exercise in Dallas?▾
A typical summer day in Dallas is Moderate (median AQI 71): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 4 of summer days (23.7%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Dallas's summer air quality problems?▾
Ground-level ozone set the daily AQI on 60.4% of summer days in Dallas. The highest summer AQI recorded in 2019–2025 was 209 (Very Unhealthy), in 2024.
Dallas summer air quality, year by year
Dallas summer air quality by year (Dallas-Fort Worth-Arlington, TX, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 92 | 65 | 17 | 147 | O3 |
| 2020 | 92 | 69 | 17 | 159 | O3 |
| 2021 | 92 | 60 | 18 | 209 | O3 |
| 2022 | 92 | 74 | 26 | 187 | O3 |
| 2023 | 92 | 89 | 28 | 177 | O3 |
| 2024worst | 92 | 72 | 33 | 203 | O3 |
| 2025cleanest | 92 | 64 | 14 | 161 | O3 |
What summer air means in Dallas
A typical summer day in Dallas is Moderate (median AQI 71): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 4 of summer days (23.7%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Summer's median AQI of 71 is above Dallas's whole-year median of 58, making it one of the area's dirtier periods. Nationally, the median Summer AQI across every EPA metro area (308,645 metro-days, 2019–2025) is 46, so Dallas runs above the national Summer norm; 23.7% of its Summer days topped AQI 100 versus 3.6% nationally (above average).
Within the season, July is the cleanest month (median AQI 68, 19.8% of days above 100) and August the worst (median 74, 29.1% above 100).
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Dallas
The latest EPA AirNow observation puts Dallas's AQI at 55 (PM2.5). The figures above are multi-year season statistics, not today's reading.
View current Dallas air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Dallas-Fort Worth-Arlington, 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.