Worst air pollution Caxias do Sul, today and tomorrow
Today (16 July): Air quality in Caxias do Sul is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 14.4/100).
Tomorrow (17 July 2026): Air quality in Caxias do Sul is good. All pollutants stay as today. Pollution peaks around 12:00 AM (O3: 14.4/100). 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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Caxias do Sul's air quality reflects its position as Rio Grande do Sul's main industrial city in the Serra Gaúcha highlands at 760 metres, with metal manufacturing, vehicle parts, and wine industry operations contributing elevated PM2.5 and NOₓ alongside traffic on the RS-122. The elevated plateau position aids background dispersal, while the surrounding Serra Gaúcha terrain creates topographic variation in pollution exposure across this southern Brazilian industrial city.
Today - 16 July | Pollution peaks at 23:00
AQI:
Good
14.4/100
PM2.5 (fine particles):
Good
5.4/100
PM10 (coarse particles):
Good
2.5/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Good
14.4/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
1.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 00:00
AQI:
Good
14.4/100
PM2.5 (fine particles):
Good
5.1/100
PM10 (coarse particles):
Good
2.4/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Good
14.4/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Good
1.0/100
Pollen forecast in Caxias do Sul
View pollen forecastFrequently Asked Questions
Is air quality bad in Caxias do Sul right now?
On 16 July 2026, overall air quality in Caxias do Sul is good. AQI is the main air quality indicator at 14.4/100. Pollution peaks around 11:00 PM (O3: 14.4/100).
Will air quality be worse tomorrow in Caxias do Sul?
On 17 July 2026, air quality conditions in Caxias do Sul will be similar to today, with AQI forecast at good at 14.4/100. Pollution peaks around 12:00 AM (O3: 14.4/100).
When is air pollution at its worst in Caxias do Sul?
In Caxias do Sul, reduced air quality is most noticeable when Araucaria pine and native Atlantic Forest species pollen peaks, and on days affected by metal manufacturing, vehicle parts, and wine industry operations; the rest of the calendar year is generally more forgiving for air quality.
Are air quality levels in Caxias do Sul 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