McAllen Air Quality in 2025
In 2025, McAllen's air quality (McAllen-Edinburg-Mission, TX area) had a median daily AQI of 52 (Moderate) across 365 monitored days. 4 days (1.1%) reached Unhealthy for Sensitive Groups or worse, 162 were Good, and the year's peak AQI was 140 (Unhealthy for Sensitive Groups). Fine particulate matter (PM2.5) set the daily AQI on 280 of those days. The cleanest month of 2025 was September (median AQI 41, 0 days above 100) and the worst was March (median 61, 2 days above 100, peak 140).
- Good: 44.4%
- Moderate: 54.5%
- Unhealthy for Sensitive Groups: 1.1%
- Unhealthy or worse: 0.0%
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How was McAllen's air quality in 2025?
Moderate on a typical day: median AQI 52, with 4 days above AQI 100 out of 365 monitored — the 5th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2025: 140 (Unhealthy for Sensitive Groups).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 280 days.
- ✓Cleanest month: September; worst: March.
Frequently asked questions
What was the average AQI in McAllen in 2025?▾
EPA's Air Quality System puts McAllen's (McAllen-Edinburg-Mission, TX) median daily AQI for 2025 at 52, which is Moderate. 4 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 140.
Which month had the worst air quality in McAllen in 2025?▾
The cleanest month of 2025 was September (median AQI 41, 0 days above 100) and the worst was March (median 61, 2 days above 100, peak 140).
Was 2025 a good or bad year for McAllen's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2025 ranks 5th cleanest by days above AQI 100. 2025's median of 52 is in line with the area's typical annual median of 50.
McAllen month by month in 2025
McAllen air quality month by month, 2025 (McAllen-Edinburg-Mission, TX, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 44 | 0 | 75 | PM2.5 |
| February | 28 | 46 | 0 | 72 | PM2.5 |
| Marchworst | 31 | 61 | 2 | 140 | PM2.5 |
| April | 30 | 59 | 1 | 101 | PM2.5 |
| May | 31 | 63 | 1 | 101 | PM2.5 |
| June | 30 | 55 | 0 | 74 | PM2.5 |
| July | 31 | 54 | 0 | 73 | PM2.5 |
| August | 31 | 45 | 0 | 65 | PM2.5 |
| Septembercleanest | 30 | 41 | 0 | 71 | O3 |
| October | 31 | 48 | 0 | 59 | PM2.5 |
| November | 30 | 45 | 0 | 63 | PM2.5 |
| December | 31 | 53 | 0 | 67 | PM2.5 |
How 2025 compares
Among the 7 years EPA has published for the area (2019–2025), 2025 ranks 5th cleanest by days above AQI 100.
2025's median of 52 is in line with the area's typical annual median of 50.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in McAllen
The latest EPA AirNow observation puts McAllen's AQI at 47 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current McAllen air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (McAllen-Edinburg-Mission, 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.