Worst air pollution League City, today and tomorrow
Today (16 July): Air quality in League City is fair. AQI, PM2.5, PM10, and O3 are fair; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (PM10: 32.9/100).
Tomorrow (17 July 2026): Air quality in League City is fair. All pollutants stay as today. Pollution peaks around 11:00 AM (O3: 26.8/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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League City's air quality reflects its position south of Houston in the Galveston Bay corridor, with vehicle emissions from I-45 and surrounding petrochemical and aerospace industry support operations contributing local sources. Gulf of Mexico sea breezes provide reliable warm-season ventilation, while the Houston Ship Channel complex upwind contributes industrial background emissions under northerly wind conditions.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
32.9/100
PM2.5 (fine particles):
Fair
24.5/100
PM10 (coarse particles):
Fair
32.9/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Fair
30.8/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
4.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 11:00
AQI:
Fair
26.8/100
PM2.5 (fine particles):
Fair
22.0/100
PM10 (coarse particles):
Fair
21.4/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
26.8/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
3.8/100
Pollen forecast in League City
View pollen forecastFrequently Asked Questions
Is air quality bad in League City right now?
On 16 July 2026, overall air quality in League City is fair. AQI is the main air quality indicator at 32.9/100. Pollution peaks around 12:00 PM (PM10: 32.9/100).
Will air quality be worse tomorrow in League City?
On 17 July 2026, air quality conditions in League City will be similar to today, with AQI forecast at fair at 26.8/100. Pollution peaks around 11:00 AM (O3: 26.8/100).
When is air pollution at its worst in League City?
League City's air quality has a clear seasonal rhythm. In short, the mildest, cleanest stretch typically falls in spring or autumn, whereas extended summer heat waves bring the year's worst ozone readings in the state's biggest metro areas. Gulf Coast humidity and inland heat can each add their own seasonal pollution patterns.
Are air quality levels in League City based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app