Worst air pollution Cachoeirinha, today and tomorrow
Today (9 August): Air quality in Cachoeirinha is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (O3: 18.5/100).
Tomorrow (10 August 2026): Air quality in Cachoeirinha is good. All pollutants stay as today. Pollution peaks around 12:00 AM (O3: 18.4/100). 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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Cachoeirinha's air quality reflects its position in the greater Porto Alegre metropolitan area's northern industrial corridor in Rio Grande do Sul, with vehicle emissions from the RS-020 and the surrounding mixed industrial and residential character of this northern satellite municipality contributing elevated NOₓ and PM2.5. The flat Gravataí river plain provides limited dispersal barriers, while the industrial character of the northern Porto Alegre corridor and the flat Guaíba basin terrain contribute to moderate persistent emission levels throughout the year.
Today - 9 August | Pollution peaks at 10:00
AQI:
Good
18.5/100
PM2.5 (fine particles):
Good
15.9/100
PM10 (coarse particles):
Good
7.3/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
18.5/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
1.7/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 00:00
AQI:
Good
18.4/100
PM2.5 (fine particles):
Good
18.3/100
PM10 (coarse particles):
Good
8.4/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
18.4/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
2.1/100
Pollen forecast in Cachoeirinha
View pollen forecastFrequently Asked Questions
Is air quality bad in Cachoeirinha right now?
On 9 August 2026, overall air quality in Cachoeirinha is good. AQI is the main air quality indicator at 18.5/100. Pollution peaks around 10:00 AM (O3: 18.5/100).
Will air quality be worse tomorrow in Cachoeirinha?
On 10 August 2026, air quality conditions in Cachoeirinha will be similar to today, with AQI forecast at good at 18.4/100. Pollution peaks around 12:00 AM (O3: 18.4/100).
When is air pollution at its worst in Cachoeirinha?
In Cachoeirinha, reduced air quality is most noticeable when eucalyptus and native pampa vegetation pollen peaks, and on days affected by vehicle emissions from the RS-020 and the surrounding mixed industrial and residential character of this northern; background levels usually settle back down once the season changes.
Are air quality levels in Cachoeirinha 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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