Highest air pollution San Antonio, today and tomorrow
Today (28 June): Air quality in San Antonio is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 AM (O3: 18.3/100).
Tomorrow (29 June 2026): Air quality in San Antonio is fair. AQI worsens to fair; PM2.5 increases to fair; PM10 increases to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 PM (PM2.5: 21.8/100). 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
San Antonio's air quality is shaped by South Texas heat driving ozone formation from vehicle emissions across one of the US's fastest-growing cities, with the flat Edwards Plateau providing good wind dispersal but limited natural filtration. The primary concerns are summer ozone episodes and occasional dust events from the surrounding Chihuahuan Desert region.
Today - 28 June | Pollution peaks at 07:00
AQI:
Good
18.3/100
PM2.5 (fine particles):
Good
13.8/100
PM10 (coarse particles):
Good
17.8/100
NO2 (nitrogen dioxide):
Good
0.5/100
O3 (ozone):
Good
18.3/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
2.3/100
Levels show the poorest local air quality during the day
Tomorrow - 29 June | Pollution peaks at 23:00
AQI:
Fair
21.8/100
PM2.5 (fine particles):
Fair
21.8/100
PM10 (coarse particles):
Fair
20.8/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Fair
21.6/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.1/100
PM1 (ultrafine particles):
Good
5.1/100
Pollen forecast in San Antonio
View pollen forecastFrequently Asked Questions
Is air quality bad in San Antonio right now?
On 28 June 2026, overall air quality in San Antonio is good. AQI is the main air quality indicator at 18.3/100. Pollution peaks around 7:00 AM (O3: 18.3/100).
Will air quality be worse tomorrow in San Antonio?
On 29 June 2026, air quality conditions in San Antonio will be worse than today, with AQI forecast at fair at 21.8/100. Pollution peaks around 11:00 PM (PM2.5: 21.8/100).
Are air quality levels in San Antonio 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: 28 June 2026 at 12:38 CET (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
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team