Dallas Air Quality in August
Across 2019–2025, Dallas's August air quality had a median AQI of 74 (Moderate) over 217 monitored days in the Dallas-Fort Worth-Arlington, TX area. 29.1% of August days (63 of 217) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 72.4% of days. The cleanest August on record here was 2022 (median AQI 61, 2 days above 100) and the worst was 2023 (median 105, 16 days above 100, peak AQI 177).
- Good: 12.0%
- Moderate: 59.0%
- Unhealthy for Sensitive Groups: 22.6%
- Unhealthy or worse: 6.5%
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 August?
Moderate on a typical day: median AQI 74 across 2019–2025, with 29.1% of August days above AQI 100. Ground-level ozone is the main driver.
- ✓12.0% of August days were Good (AQI 0–50), 59.0% Moderate (51–100).
- ✓63 days of 217 reached AQI 101+; the August peak was 203.
- ✓Best August: 2022; worst August: 2023.
Frequently asked questions
What is the air quality like in Dallas in August?▾
Across 2019–2025, the median daily AQI in Dallas in August was 74 (Moderate). 12.0% of days were Good, 59.0% Moderate, and 29.1% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is August a good time for outdoor exercise in Dallas?▾
A typical August day in Dallas is Moderate (median AQI 74): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 3 of August days (29.1%) 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 August air quality problems?▾
Ground-level ozone set the daily AQI on 72.4% of August days in Dallas. The highest August AQI recorded in 2019–2025 was 203 (Very Unhealthy), in 2023.
Dallas August air quality, year by year
Dallas August 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 | 31 | 64 | 5 | 147 | O3 |
| 2020 | 31 | 71 | 10 | 159 | O3 |
| 2021 | 31 | 60 | 5 | 133 | PM2.5 |
| 2022cleanest | 31 | 61 | 2 | 156 | O3 |
| 2023worst | 31 | 105 | 16 | 177 | O3 |
| 2024 | 31 | 101 | 16 | 203 | O3 |
| 2025 | 31 | 77 | 9 | 161 | O3 |
What August air means in Dallas
A typical August day in Dallas is Moderate (median AQI 74): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 3 of August days (29.1%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
August's median AQI of 74 is above Dallas's whole-year median of 58, making it one of the area's dirtier periods. Nationally, the median August AQI across every EPA metro area (104,152 metro-days, 2019–2025) is 45, so Dallas runs above the national August norm; 29.1% of its August days topped AQI 100 versus 3.5% nationally (above average).
August is part of Dallas's summer season (June, July, August); the summer page pools all three months.
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 month 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.