McAllen Air Quality in 2023
In 2023, McAllen's air quality (McAllen-Edinburg-Mission, TX area) had a median daily AQI of 44 (Good) across 357 monitored days. 0 days (0.0%) reached Unhealthy for Sensitive Groups or worse, 206 were Good, and the year's peak AQI was 95 (Moderate). Fine particulate matter (PM2.5) set the daily AQI on 338 of those days. The cleanest month of 2023 was September (median AQI 32, 0 days above 100) and the worst was July (median 59, 0 days above 100, peak 85).
- Good: 57.7%
- Moderate: 42.3%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How was McAllen's air quality in 2023?
Good on a typical day: median AQI 44, with 0 days above AQI 100 out of 357 monitored — the 1st cleanest of 7 years on record for the area.
- ✓Peak AQI in 2023: 95 (Moderate).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 338 days.
- ✓Cleanest month: September; worst: July.
Frequently asked questions
What was the average AQI in McAllen in 2023?▾
EPA's Air Quality System puts McAllen's (McAllen-Edinburg-Mission, TX) median daily AQI for 2023 at 44, which is Good. 0 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 95.
Which month had the worst air quality in McAllen in 2023?▾
The cleanest month of 2023 was September (median AQI 32, 0 days above 100) and the worst was July (median 59, 0 days above 100, peak 85).
Was 2023 a good or bad year for McAllen's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2023 ranks 1st cleanest by days above AQI 100 — the best year on record here. 2023's median of 44 is below the area's typical annual median of 50.
McAllen month by month in 2023
McAllen air quality month by month, 2023 (McAllen-Edinburg-Mission, TX, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 42 | 0 | 90 | PM2.5 |
| February | 28 | 43 | 0 | 75 | PM2.5 |
| March | 31 | 57 | 0 | 79 | PM2.5 |
| April | 30 | 51 | 0 | 78 | PM2.5 |
| May | 31 | 47 | 0 | 95 | PM2.5 |
| June | 22 | 42 | 0 | 73 | PM2.5 |
| Julyworst | 31 | 59 | 0 | 85 | PM2.5 |
| August | 31 | 53 | 0 | 63 | PM2.5 |
| Septembercleanest | 30 | 32 | 0 | 59 | PM2.5 |
| October | 31 | 35 | 0 | 59 | PM2.5 |
| November | 30 | 37 | 0 | 62 | PM2.5 |
| December | 31 | 42 | 0 | 80 | PM2.5 |
How 2023 compares
Among the 7 years EPA has published for the area (2019–2025), 2023 ranks 1st cleanest by days above AQI 100 — the best year on record here.
2023's median of 44 is below 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 40 (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.