Laredo Air Quality in Spring
Across 2019–2025, Laredo's spring (March–May) air quality had a median AQI of 56 (Moderate) over 644 monitored days in the Laredo, TX area. 2.6% of spring days (17 of 644) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 71.0% of days. The cleanest spring on record here was 2021 (median AQI 54, 0 days above 100) and the worst was 2024 (median 66, 10 days above 100, peak AQI 129).
- Good: 33.5%
- Moderate: 63.8%
- Unhealthy for Sensitive Groups: 2.6%
- 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.
Recommended: Levoit Core 300 — True HEPA + activated carbon · CADR ~141 CFM · rooms up to 219 sq ft
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How is the air in Laredo in spring?
Moderate on a typical day: median AQI 56 across 2019–2025, with 2.6% of spring days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓33.5% of spring days were Good (AQI 0–50), 63.8% Moderate (51–100).
- ✓17 days of 644 reached AQI 101+; the spring peak was 129.
- ✓Cleanest month: March; worst month: May.
Frequently asked questions
What is the air quality like in Laredo in spring?▾
Across 2019–2025, the median daily AQI in Laredo in spring was 56 (Moderate). 33.5% of days were Good, 63.8% Moderate, and 2.6% 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 Laredo?▾
A typical spring 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 38 of spring days (2.6%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Laredo's spring air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 71.0% of spring days in Laredo. The highest spring AQI recorded in 2019–2025 was 129 (Unhealthy for Sensitive Groups), in 2024.
Laredo spring air quality, year by year
Laredo spring air quality by year (Laredo, TX, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 92 | 53 | 1 | 109 | PM2.5 |
| 2020 | 92 | 52 | 1 | 103 | PM2.5 |
| 2021cleanest | 92 | 54 | 0 | 97 | PM2.5 |
| 2022 | 92 | 56 | 1 | 102 | PM2.5 |
| 2023 | 92 | 53 | 2 | 112 | PM2.5 |
| 2024worst | 92 | 66 | 10 | 129 | PM2.5 |
| 2025 | 92 | 61 | 2 | 115 | PM2.5 |
What spring air means in Laredo
A typical spring 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 38 of spring days (2.6%) 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 56 is above Laredo's whole-year median of 47, 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 Laredo runs above the national Spring norm; 2.6% of its Spring days topped AQI 100 versus 0.8% nationally (above average).
Within the season, March is the cleanest month (median AQI 52, 0.5% of days above 100) and May the worst (median 58, 6.5% above 100).
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 season 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.