Worst air pollution San Antonio, today and tomorrow
Today (9 August): Air quality in San Antonio is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 18.8/100).
Tomorrow (10 August 2026): Air quality in San Antonio is good. All pollutants stay as today. Pollution peaks around 11:00 PM (O3: 19.0/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
San Antonio's air quality in Paraguay reflects the greater Asunción metropolitan western ring, with vehicle traffic on the Ruta 2 and the surrounding mixed industrial and residential character contributing elevated NOₓ alongside localised manufacturing operations. The flat Paraguayan terrain provides reasonable dispersal, while dry season burning from surrounding agricultural land contributes seasonal PM2.5 variation and the growing Asunción metropolitan expansion drives increasing vehicle emissions throughout the year.
Today - 9 August | Pollution peaks at 23:00
AQI:
Good
18.8/100
PM2.5 (fine particles):
Good
15.9/100
PM10 (coarse particles):
Good
7.3/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
18.8/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
1.7/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 23:00
AQI:
Good
19.0/100
PM2.5 (fine particles):
Good
16.1/100
PM10 (coarse particles):
Good
7.3/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
19.0/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
1.8/100
Pollen forecast in San Antonio
View pollen forecastFrequently Asked Questions
Is air quality bad in San Antonio right now?
On 9 August 2026, overall air quality in San Antonio is good. AQI is the main air quality indicator at 18.8/100. Pollution peaks around 11:00 PM (O3: 18.8/100).
Will air quality be worse tomorrow in San Antonio?
On 10 August 2026, air quality conditions in San Antonio will be similar to today, with AQI forecast at good at 19.0/100. Pollution peaks around 11:00 PM (O3: 19.0/100).
When is air pollution at its worst in San Antonio?
Residents in San Antonio are likeliest to notice reduced air quality when native forest remnants and eucalyptus pollen peaks, or due to vehicle traffic on the Ruta 2 and the nearby mixed industrial and residential character; a change of season or a spell of wind usually clears things up again.
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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
Check air quality in other popular cities:
Data provided by Airmine — Last update: 10 August 2026 at 02:34 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Get the full experience in the Airmine app.