Laredo Air Quality in April
Across 2019–2025, Laredo's April air quality had a median AQI of 56 (Moderate) over 210 monitored days in the Laredo, TX area. 1.0% of April days (2 of 210) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 70.0% of days. The cleanest April on record here was 2019 (median AQI 48, 0 days above 100) and the worst was 2024 (median 64, 1 day above 100, peak AQI 106).
- Good: 29.5%
- Moderate: 69.5%
- Unhealthy for Sensitive Groups: 1.0%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Laredo
Today's main pollutant in Laredo is ground-level ozone (AQI 13). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
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How is the air in Laredo in April?
Moderate on a typical day: median AQI 56 across 2019–2025, with 1.0% of April days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓29.5% of April days were Good (AQI 0–50), 69.5% Moderate (51–100).
- ✓2 days of 210 reached AQI 101+; the April peak was 106.
- ✓Best April: 2019; worst April: 2024.
Frequently asked questions
What is the air quality like in Laredo in April?▾
Across 2019–2025, the median daily AQI in Laredo in April was 56 (Moderate). 29.5% of days were Good, 69.5% Moderate, and 1.0% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is April a good time for outdoor exercise in Laredo?▾
A typical April day in Laredo is Moderate (median AQI 56): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 100 of April days (1.0%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Laredo's April air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 70.0% of April days in Laredo. The highest April AQI recorded in 2019–2025 was 106 (Unhealthy for Sensitive Groups), in 2024.
Laredo April air quality, year by year
Laredo April air quality by year (Laredo, TX, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019cleanest | 30 | 48 | 0 | 96 | PM2.5 |
| 2020 | 30 | 58 | 1 | 103 | PM2.5 |
| 2021 | 30 | 56 | 0 | 96 | PM2.5 |
| 2022 | 30 | 60 | 0 | 78 | PM2.5 |
| 2023 | 30 | 52 | 0 | 80 | PM2.5 |
| 2024worst | 30 | 64 | 1 | 106 | PM2.5 |
| 2025 | 30 | 61 | 0 | 97 | PM2.5 |
What April air means in Laredo
A typical April day in Laredo is Moderate (median AQI 56): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 100 of April days (1.0%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
April's median AQI of 56 is above Laredo's whole-year median of 47, making it one of the area's dirtier periods. Nationally, the median April AQI across every EPA metro area (100,677 metro-days, 2019–2025) is 44, so Laredo runs above the national April norm; 1.0% of its April days topped AQI 100 versus 0.7% nationally (about the same).
April is part of Laredo's spring season (March, April, May); the spring page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Laredo
The latest EPA AirNow observation puts Laredo's AQI at 13 (O3). The figures above are multi-year month statistics, not today's reading.
View current Laredo air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Laredo, 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.