Worst air pollution Teresópolis, today and tomorrow
Today (9 August): Air quality in Teresópolis is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 AM (O3: 20.1/100).
Tomorrow (10 August 2026): Air quality in Teresópolis is fair. PM2.5 increases to fair; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 6:00 AM (PM2.5: 22.8/100). 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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Teresópolis's air quality benefits from its elevated position in the Serra dos Órgãos at 872 metres above Rio de Janeiro, with the Atlantic trade winds and consistent cloud forest moisture providing relatively clean mountain air compared to coastal Rio. Vehicle emissions from the RJ-130 and tourist traffic contribute local sources, while the mountain topography creates strong diurnal ventilation patterns that flush the valley daily, and the protected National Park backdrop provides one of Rio de Janeiro state's cleanest urban environments in the higher elevation residential areas.
Today - 9 August | Pollution peaks at 04:00
AQI:
Fair
20.1/100
PM2.5 (fine particles):
Good
16.4/100
PM10 (coarse particles):
Good
7.6/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
20.1/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
1.9/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 06:00
AQI:
Fair
22.8/100
PM2.5 (fine particles):
Fair
22.8/100
PM10 (coarse particles):
Good
10.6/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
18.8/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
2.5/100
Pollen forecast in Teresópolis
View pollen forecastFrequently Asked Questions
Is air quality bad in Teresópolis right now?
On 9 August 2026, overall air quality in Teresópolis is fair. AQI is the main air quality indicator at 20.1/100. Pollution peaks around 4:00 AM (O3: 20.1/100).
Will air quality be worse tomorrow in Teresópolis?
On 10 August 2026, air quality conditions in Teresópolis will be similar to today, with AQI forecast at fair at 22.8/100. Pollution peaks around 6:00 AM (PM2.5: 22.8/100).
When is air pollution at its worst in Teresópolis?
In Teresópolis, reduced air quality is most noticeable when native Atlantic Forest remnants and highland campo vegetation pollen peaks, and on days affected by vehicle emissions from the RJ-130 and tourist traffic; the rest of the year, the local setting keeps things noticeably clearer than average.
Are air quality levels in Teresópolis 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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