Worst air pollution Rio das Ostras, today and tomorrow

On 9 August 2026, overall air quality in Rio das Ostras is fair. AQI is the main air quality indicator at 20.1/100. Pollution peaks around 4:00 AM (O3: 20.1/100).

On 10 August 2026, air quality conditions in Rio das Ostras will be better than today, with AQI forecast at good at 18.8/100. Pollution peaks around 7:00 PM (O3: 18.8/100).

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.

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.

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.