Worst air pollution Santa Maria, today and tomorrow
Today (16 July): Air quality in Santa Maria is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 13.8/100).
Tomorrow (17 July 2026): Air quality in Santa Maria is good. All pollutants stay as today. Pollution peaks around 12:00 AM (O3: 13.8/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Santa Maria's air quality reflects its position in the Rio Grande do Sul Missions plateau region at 153 metres, with vehicle emissions from the BR-158 and the surrounding agricultural and military activity contributing local sources in this major federal university and air force base city. The flat central Rio Grande do Sul terrain generally allows reasonable wind dispersal, while dry season burning from surrounding agricultural land contributes seasonal PM2.5 variation across the broader southern Brazilian interior.
Today - 16 July | Pollution peaks at 23:00
AQI:
Good
13.8/100
PM2.5 (fine particles):
Good
5.0/100
PM10 (coarse particles):
Good
2.3/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Good
13.8/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
1.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 00:00
AQI:
Good
13.8/100
PM2.5 (fine particles):
Good
5.1/100
PM10 (coarse particles):
Good
2.3/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Good
13.8/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Good
0.9/100
Pollen forecast in Santa Maria
View pollen forecastFrequently Asked Questions
Is air quality bad in Santa Maria right now?
On 16 July 2026, overall air quality in Santa Maria is good. AQI is the main air quality indicator at 13.8/100. Pollution peaks around 11:00 PM (O3: 13.8/100).
Will air quality be worse tomorrow in Santa Maria?
On 17 July 2026, air quality conditions in Santa Maria will be similar to today, with AQI forecast at good at 13.8/100. Pollution peaks around 12:00 AM (O3: 13.8/100).
When is air pollution at its worst in Santa Maria?
Santa Maria residents notice reduced air quality mainly when eucalyptus and the Vacacaí River corridor riparian vegetation pollen peaks, and during spells of vehicle emissions from the BR-158 and the surrounding agricultural and military activity; conditions generally improve once the season shifts and rainfall or stronger winds return.
Are air quality levels in Santa Maria 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