Worst air pollution Leander, today and tomorrow
Today (16 July): Air quality in Leander is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 AM (O3: 29.0/100).
Tomorrow (17 July 2026): Air quality in Leander is fair. All pollutants stay as today. Pollution peaks around 10:00 AM (O3: 27.4/100). 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
Use our Strava plugin to check your own exposure.
Leander's air quality benefits from the flat Central Texas terrain providing generally good wind dispersal, with vehicle emissions from US-183 the primary local source in this rapidly growing Williamson County Austin northern suburb. Summer ozone from the Austin metropolitan vehicle emissions and intense Texas heat is the primary warm-season concern, while prevailing southerly Gulf breezes generally maintain moderate conditions and Leander's suburban character limits heavy industrial emissions throughout the year.
Today - 16 July | Pollution peaks at 11:00
AQI:
Fair
29.0/100
PM2.5 (fine particles):
Good
13.1/100
PM10 (coarse particles):
Good
18.9/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Fair
29.0/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
3.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 10:00
AQI:
Fair
27.4/100
PM2.5 (fine particles):
Good
11.3/100
PM10 (coarse particles):
Good
11.4/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Fair
27.4/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
2.7/100
Pollen forecast in Leander
View pollen forecastFrequently Asked Questions
Is air quality bad in Leander right now?
On 16 July 2026, overall air quality in Leander is fair. AQI is the main air quality indicator at 29.0/100. Pollution peaks around 11:00 AM (O3: 29.0/100).
Will air quality be worse tomorrow in Leander?
On 17 July 2026, air quality conditions in Leander will be similar to today, with AQI forecast at fair at 27.4/100. Pollution peaks around 10:00 AM (O3: 27.4/100).
When is air pollution at its worst in Leander?
Air quality in Leander shifts across the year. Typically, the mildest, cleanest stretch typically falls in spring or autumn, while 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 Leander 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.
Want to see air quality forecasts for other cities in United States?
Check air quality in other popular cities:
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