Brownsville Air Quality in February
Across 2019–2025, Brownsville's February air quality had a median AQI of 53 (Moderate) over 198 monitored days in the Brownsville-Harlingen, TX area. 2.0% of February days (4 of 198) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 74.7% of days. The cleanest February on record here was 2022 (median AQI 45, 0 days above 100) and the worst was 2024 (median 56, 4 days above 100, peak AQI 117).
- Good: 43.4%
- Moderate: 54.5%
- Unhealthy for Sensitive Groups: 2.0%
- Unhealthy or worse: 0.0%
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How is the air in Brownsville in February?
Moderate on a typical day: median AQI 53 across 2019–2025, with 2.0% of February days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓43.4% of February days were Good (AQI 0–50), 54.5% Moderate (51–100).
- ✓4 days of 198 reached AQI 101+; the February peak was 117.
- ✓Best February: 2022; worst February: 2024.
Frequently asked questions
What is the air quality like in Brownsville in February?▾
Across 2019–2025, the median daily AQI in Brownsville in February was 53 (Moderate). 43.4% of days were Good, 54.5% Moderate, and 2.0% reached Unhealthy for Sensitive Groups or worse, based on 198 monitored days in EPA's Air Quality System.
Is February a good time for outdoor exercise in Brownsville?▾
A typical February day in Brownsville is Moderate (median AQI 53): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 50 of February days (2.0%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Brownsville's February air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 74.7% of February days in Brownsville. The highest February AQI recorded in 2019–2025 was 117 (Unhealthy for Sensitive Groups), in 2024.
Brownsville February air quality, year by year
Brownsville February air quality by year (Brownsville-Harlingen, TX, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 28 | 51 | 0 | 91 | PM2.5 |
| 2020 | 29 | 47 | 0 | 74 | PM2.5 |
| 2021 | 28 | 54 | 0 | 73 | PM2.5 |
| 2022cleanest | 28 | 45 | 0 | 71 | PM2.5 |
| 2023 | 28 | 59 | 0 | 91 | PM2.5 |
| 2024worst | 29 | 56 | 4 | 117 | PM2.5 |
| 2025 | 28 | 52 | 0 | 79 | PM2.5 |
What February air means in Brownsville
A typical February day in Brownsville is Moderate (median AQI 53): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 50 of February days (2.0%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
February's median AQI of 53 is in line with Brownsville's whole-year median of 52, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median February AQI across every EPA metro area (87,428 metro-days, 2019–2025) is 41, so Brownsville runs above the national February norm; 2.0% of its February days topped AQI 100 versus 0.4% nationally (above average).
February is part of Brownsville's winter season (December, January, February); the winter page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Brownsville
The latest EPA AirNow observation puts Brownsville's AQI at 47 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Brownsville air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Brownsville-Harlingen, 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.