SmogRank / World / United States / Texas / September 2025
Most polluted cities in Texas, United States, September 2025
36 cities in Texas, United States ranked by their average PM2.5 over the 30 days. Worst: Port Isabel at 15.2 µg/m³, #323 of 3,052 cities in the world. Cleanest: Socorro at 4.7. A city needs measurements on 70% of the days to be ranked.
Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.
- 1Port Isabel 0%
- 2Houston 0%
- 3Conroe 0%
- 4Pasadena 0%
- 5Lacy-Lakeview 0%
- 6Denton 0%
- 7Highlands 0%
- 8Fort Worth 0%
- 9Mission Bend 0%
- 10Missouri City 0%
- 11River Oaks 0%
- 12Austin 0%
- 13Corsicana 0%
- 14Port Arthur 0%
- 14Seabrook 0%
- 16Kaufman 0%
- 17Windcrest 0%
- 18Wells Branch 0%
- 19Belton 0%
- 19San Antonio 0%
- 21Eagle Pass 0%
- 22College Station 0%
- 23Galveston 0%
- 23Helotes 0%
- 25Cedar Park 0%
- 25Edinburg 0%
- 25El Paso 0%
- 28Corpus Christi 0%
- 29San Marcos 0%
- 30Odessa 0%
- 31Mission 0%
- 31Taylor 0%
- 31Timberwood Park 0%
- 34Lockhart 0%
- 35Lubbock 0%
- 36Socorro 0%
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
All cities in the world, September 2025 · All cities in United States, September 2025 · Texas now
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SmogRank, most polluted cities in Texas, United States, PM2.5, September 2025, smogrank.com/us/region/texas/history/2025-09 (accessed 7 Oct 2026).
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