McAllen Air Quality in Spring
Across 2019–2025, McAllen's spring (March–May) air quality had a median AQI of 57 (Moderate) over 644 monitored days in the McAllen-Edinburg-Mission, TX area. 4.6% of spring days (30 of 644) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 81.1% of days. The cleanest spring on record here was 2023 (median AQI 52, 0 days above 100) and the worst was 2024 (median 75, 20 days above 100, peak AQI 153).
- Good: 31.7%
- Moderate: 63.7%
- Unhealthy for Sensitive Groups: 4.0%
- Unhealthy or worse: 0.6%
Improve Indoor Air Quality
Even with good outdoor air in McAllen, indoor PM2.5, dust and allergens build up. A True-HEPA purifier keeps a bedroom or office consistently clean.
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How is the air in McAllen in spring?
Moderate on a typical day: median AQI 57 across 2019–2025, with 4.6% of spring days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓31.7% of spring days were Good (AQI 0–50), 63.7% Moderate (51–100).
- ✓30 days of 644 reached AQI 101+; the spring peak was 153.
- ✓Cleanest month: March; worst month: May.
Frequently asked questions
What is the air quality like in McAllen in spring?▾
Across 2019–2025, the median daily AQI in McAllen in spring was 57 (Moderate). 31.7% of days were Good, 63.7% Moderate, and 4.6% reached Unhealthy for Sensitive Groups or worse, based on 644 monitored days in EPA's Air Quality System.
Is spring a good time for outdoor exercise in McAllen?▾
A typical spring day in McAllen is Moderate (median AQI 57): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 22 of spring days (4.6%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes McAllen's spring air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 81.1% of spring days in McAllen. The highest spring AQI recorded in 2019–2025 was 153 (Unhealthy), in 2024.
McAllen spring air quality, year by year
McAllen spring air quality by year (McAllen-Edinburg-Mission, TX, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 92 | 56 | 2 | 106 | PM2.5 |
| 2020 | 92 | 56 | 3 | 126 | PM2.5 |
| 2021 | 92 | 55 | 0 | 96 | PM2.5 |
| 2022 | 92 | 55 | 1 | 136 | PM2.5 |
| 2023cleanest | 92 | 52 | 0 | 95 | PM2.5 |
| 2024worst | 92 | 75 | 20 | 153 | PM2.5 |
| 2025 | 92 | 61 | 4 | 140 | PM2.5 |
What spring air means in McAllen
A typical spring day in McAllen is Moderate (median AQI 57): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 22 of spring days (4.6%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Spring's median AQI of 57 is above McAllen's whole-year median of 50, making it one of the area's dirtier periods. Nationally, the median Spring AQI across every EPA metro area (307,196 metro-days, 2019–2025) is 43, so McAllen runs above the national Spring norm; 4.6% of its Spring days topped AQI 100 versus 0.8% nationally (above average).
Within the season, March is the cleanest month (median AQI 54, 0.9% of days above 100) and May the worst (median 59, 9.6% above 100).
Activity-specific thresholds: running, cycling, kids' sports.
Right now in McAllen
The latest EPA AirNow observation puts McAllen's AQI at 43 (PM2.5). The figures above are multi-year season 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.