Worst air pollution San Pedro de Alcántara, today and tomorrow

On 19 July 2026, overall air quality in San Pedro de Alcántara is poor. AQI is the main air quality indicator at 61.2/100. Pollution peaks around 6:00 PM (O3: 61.2/100).

On 20 July 2026, air quality conditions in San Pedro de Alcántara will be similar to today, with AQI forecast at poor at 61.4/100. Pollution peaks around 8:00 PM (O3: 61.4/100).

When is air quality typically worst in San Pedro de Alcántara? December through February is often the toughest stretch, driven by temperature inversions that keep exhaust and heating smoke from dispersing on still days. Spring generally sees a gradual recovery, driven by more frequent rain showers and stronger breezes that prevent pollutants from settling. The heat of summer drives up ozone formation, and dry conditions occasionally bring smoke from regional wildfires into the mix. Autumn generally marks the shift back toward calmer, cleaner conditions as temperatures drop and rainfall becomes more regular. The south's long, hot summers and occasional calima dust events from across the Strait tend to intensify the usual seasonal swings.

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.