Laredo Air Quality in Summer
Across 2019–2025, Laredo's summer (June–August) air quality had a median AQI of 51 (Moderate) over 640 monitored days in the Laredo, TX area. 1.1% of summer days (7 of 640) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 78.1% of days. The cleanest summer on record here was 2025 (median AQI 45, 0 days above 100) and the worst was 2023 (median 53, 2 days above 100, peak AQI 133).
- Good: 48.3%
- Moderate: 50.6%
- Unhealthy for Sensitive Groups: 0.9%
- Unhealthy or worse: 0.2%
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 summer?
Moderate on a typical day: median AQI 51 across 2019–2025, with 1.1% of summer days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓48.3% of summer days were Good (AQI 0–50), 50.6% Moderate (51–100).
- ✓7 days of 640 reached AQI 101+; the summer peak was 163.
- ✓Cleanest month: July; worst month: June.
Frequently asked questions
What is the air quality like in Laredo in summer?▾
Across 2019–2025, the median daily AQI in Laredo in summer was 51 (Moderate). 48.3% of days were Good, 50.6% Moderate, and 1.1% reached Unhealthy for Sensitive Groups or worse, based on 640 monitored days in EPA's Air Quality System.
Is summer a good time for outdoor exercise in Laredo?▾
A typical summer day in Laredo is Moderate (median AQI 51): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 91 of summer days (1.1%) 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 summer air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 78.1% of summer days in Laredo. The highest summer AQI recorded in 2019–2025 was 163 (Unhealthy), in 2023.
Laredo summer air quality, year by year
Laredo summer air quality by year (Laredo, TX, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 92 | 56 | 0 | 82 | PM2.5 |
| 2020 | 92 | 50 | 2 | 163 | PM2.5 |
| 2021 | 92 | 52 | 0 | 87 | PM2.5 |
| 2022 | 88 | 50 | 1 | 114 | PM2.5 |
| 2023worst | 92 | 53 | 2 | 133 | PM2.5 |
| 2024 | 92 | 44 | 2 | 104 | PM2.5 |
| 2025cleanest | 92 | 45 | 0 | 87 | PM2.5 |
What summer air means in Laredo
A typical summer day in Laredo is Moderate (median AQI 51): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 91 of summer days (1.1%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Summer's median AQI of 51 is above Laredo's whole-year median of 47, making it one of the area's dirtier periods. Nationally, the median Summer AQI across every EPA metro area (308,645 metro-days, 2019–2025) is 46, so Laredo runs above the national Summer norm; 1.1% of its Summer days topped AQI 100 versus 3.6% nationally (below average).
Within the season, July is the cleanest month (median AQI 53, 0.5% of days above 100) and June the worst (median 53, 1.9% 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.