Worst air pollution Viamão, today and tomorrow
Today (16 July): Air quality in Viamão is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (O3: 13.3/100).
Tomorrow (17 July 2026): Air quality in Viamão is good. All pollutants stay as today. Pollution peaks around 12:00 AM (O3: 13.3/100). 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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Viamão's air quality reflects its position in the eastern greater Porto Alegre metropolitan area adjacent to the Lagoa dos Patos coastal lagoon system, with vehicle emissions from the RS-040 and the surrounding mixed residential and light agricultural character of this sprawling metropolitan municipality contributing local sources. The flat Guaíba lakeside plain provides reasonable wind dispersal on most days, while dry season burning from surrounding Rio Grande do Sul agricultural land contributes seasonal PM2.5 variation.
Today - 16 July | Pollution peaks at 09:00
AQI:
Good
13.3/100
PM2.5 (fine particles):
Good
6.5/100
PM10 (coarse particles):
Good
3.0/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Good
13.3/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Good
1.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 00:00
AQI:
Good
13.3/100
PM2.5 (fine particles):
Good
8.3/100
PM10 (coarse particles):
Good
3.8/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Good
13.3/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
1.5/100
Pollen forecast in Viamão
View pollen forecastFrequently Asked Questions
Is air quality bad in Viamão right now?
On 16 July 2026, overall air quality in Viamão is good. AQI is the main air quality indicator at 13.3/100. Pollution peaks around 9:00 AM (O3: 13.3/100).
Will air quality be worse tomorrow in Viamão?
On 17 July 2026, air quality conditions in Viamão will be similar to today, with AQI forecast at good at 13.3/100. Pollution peaks around 12:00 AM (O3: 13.3/100).
When is air pollution at its worst in Viamão?
Viamão residents notice reduced air quality mainly when eucalyptus and lake-edge vegetation pollen peaks, and during spells of vehicle emissions from the RS-040 and the surrounding mixed residential and light agricultural character of this; the rest of the year typically brings clearer, more consistent conditions.
Are air quality levels in Viamão 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