Worst air pollution Passo Fundo, today and tomorrow
Today (9 August): Air quality in Passo Fundo is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 18.5/100).
Tomorrow (10 August 2026): Air quality in Passo Fundo is good. All pollutants stay as today. Pollution peaks around 11:00 PM (O3: 18.5/100). 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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Passo Fundo's air quality reflects its position on the Rio Grande do Sul highlands plateau at 687 metres, with vehicle emissions from the BR-285 and the surrounding wheat, soy, and poultry processing industry contributing local sources in this major southern Brazilian agribusiness hub. The elevated plateau position aids background dispersal, while dry season burning from surrounding Rio Grande do Sul and Santa Catarina agricultural land contributes seasonal PM2.5 variation, and the cold subtropical winter climate makes wood burning a supplementary residential heating source.
Today - 9 August | Pollution peaks at 23:00
AQI:
Good
18.5/100
PM2.5 (fine particles):
Good
13.5/100
PM10 (coarse particles):
Good
6.2/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
18.5/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
1.4/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 23:00
AQI:
Good
18.5/100
PM2.5 (fine particles):
Good
15.3/100
PM10 (coarse particles):
Good
7.0/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
18.5/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
1.7/100
Pollen forecast in Passo Fundo
View pollen forecastFrequently Asked Questions
Is air quality bad in Passo Fundo right now?
On 9 August 2026, overall air quality in Passo Fundo is good. AQI is the main air quality indicator at 18.5/100. Pollution peaks around 11:00 PM (O3: 18.5/100).
Will air quality be worse tomorrow in Passo Fundo?
On 10 August 2026, air quality conditions in Passo Fundo will be similar to today, with AQI forecast at good at 18.5/100. Pollution peaks around 11:00 PM (O3: 18.5/100).
When is air pollution at its worst in Passo Fundo?
The most noticeable dips in Passo Fundo's air quality come when eucalyptus and wheat pollen peaks, or because of vehicle emissions from the BR-285 and the surrounding wheat, soy, and poultry processing industry; conditions generally improve once the season shifts and rainfall or stronger winds return.
Are air quality levels in Passo Fundo 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.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
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