Worst air pollution Rio das Ostras, today and tomorrow
Today (16 July): Air quality in Rio das Ostras is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 16.0/100).
Tomorrow (17 July 2026): Air quality in Rio das Ostras is good. All pollutants stay as today. Pollution peaks around 6:00 PM (O3: 16.9/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Rio das Ostras' air quality reflects its position on the Rio de Janeiro state northern coast in the Campos oil basin region, with the Petrobras offshore support operations and the growing residential development from the oil boom contributing vehicle emissions from the RJ-106 corridor. Atlantic sea breezes from the open ocean generally provide reliable coastal ventilation, while the proximity to the Campos oil basin's offshore support infrastructure makes petroleum-related emissions the most distinctive local air quality characteristic.
Today - 16 July | Pollution peaks at 23:00
AQI:
Good
16.0/100
PM2.5 (fine particles):
Good
6.1/100
PM10 (coarse particles):
Good
2.7/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Good
16.0/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
1.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 18:00
AQI:
Good
16.9/100
PM2.5 (fine particles):
Good
6.2/100
PM10 (coarse particles):
Good
2.7/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Good
16.9/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
1.5/100
Pollen forecast in Rio das Ostras
View pollen forecastFrequently Asked Questions
Is air quality bad in Rio das Ostras right now?
On 16 July 2026, overall air quality in Rio das Ostras is good. AQI is the main air quality indicator at 16.0/100. Pollution peaks around 11:00 PM (O3: 16.0/100).
Will air quality be worse tomorrow in Rio das Ostras?
On 17 July 2026, air quality conditions in Rio das Ostras will be similar to today, with AQI forecast at good at 16.9/100. Pollution peaks around 6:00 PM (O3: 16.9/100).
When is air pollution at its worst in Rio das Ostras?
Rio das Ostras residents notice reduced air quality mainly when restinga coastal scrub and introduced urban resort trees pollen peaks, and during spells of the Petrobras offshore support operations and the growing residential development from the oil boom; wind and rain both help clear the air fairly quickly here.
Are air quality levels in Rio das Ostras 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.
Want to see air quality forecasts for other cities in Brazil?
Check air quality in other popular cities:
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