Worst air pollution São Mateus, today and tomorrow

On 9 August 2026, overall air quality in São Mateus is good. AQI is the main air quality indicator at 19.6/100. Pollution peaks around 10:00 PM (O3: 19.6/100).

On 10 August 2026, air quality conditions in São Mateus will be similar to today, with AQI forecast at good at 19.5/100. Pollution peaks around 8:00 AM (O3: 19.5/100).

In São Mateus, reduced air quality is most noticeable when native Atlantic Forest remnants and eucalyptus pollen peaks, and on days affected by vehicle emissions from the BR-101 and the surrounding petroleum extraction operations from the Campos-São Mateus oil; the picture usually improves again once the season turns.

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.