Worst air pollution Santo Ângelo, today and tomorrow
Today (16 July): Air quality in Santo Ângelo is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 15.2/100).
Tomorrow (17 July 2026): Air quality in Santo Ângelo is good. All pollutants stay as today. Pollution peaks around 11:00 AM (O3: 15.2/100). 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.
Santo Ângelo's air quality reflects the Rio Grande do Sul northwestern Missões plateau at 282 metres, with vehicle emissions from the BR-285 and surrounding soybean, wheat, and cattle agribusiness contributing local sources. The elevated plateau position aids background dispersal, while dry season burning from surrounding Rio Grande do Sul and Argentinian cross-border agricultural operations contributes seasonal PM2.5 variation throughout the year.
Today - 16 July | Pollution peaks at 23:00
AQI:
Good
15.2/100
PM2.5 (fine particles):
Good
10.4/100
PM10 (coarse particles):
Good
4.7/100
NO2 (nitrogen dioxide):
Good
0.6/100
O3 (ozone):
Good
15.2/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
2.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 11:00
AQI:
Good
15.2/100
PM2.5 (fine particles):
Good
8.8/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Good
15.2/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
1.8/100
Pollen forecast in Santo Ângelo
View pollen forecastFrequently Asked Questions
Is air quality bad in Santo Ângelo right now?
On 16 July 2026, overall air quality in Santo Ângelo is good. AQI is the main air quality indicator at 15.2/100. Pollution peaks around 11:00 PM (O3: 15.2/100).
Will air quality be worse tomorrow in Santo Ângelo?
On 17 July 2026, air quality conditions in Santo Ângelo will be similar to today, with AQI forecast at good at 15.2/100. Pollution peaks around 11:00 AM (O3: 15.2/100).
When is air pollution at its worst in Santo Ângelo?
The most noticeable dips in Santo Ângelo's air quality come when native Araucaria forest remnants and soybean farmland pollen peaks, or because of vehicle emissions from the BR-285 and surrounding soybean, wheat, and cattle agribusiness; a change of season or a spell of wind usually clears things up again.
Are air quality levels in Santo Ângelo 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 Brazil?
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