Worst air pollution Sitges, today and tomorrow

On 16 July 2026, overall air quality in Sitges is medium. AQI is the main air quality indicator at 58.2/100. Pollution peaks around 2:00 PM (O3: 58.2/100).

On 17 July 2026, air quality conditions in Sitges will be similar to today, with AQI forecast at medium at 59.5/100. Pollution peaks around 2:00 PM (O3: 59.5/100).

How do the seasons affect air quality in Sitges? Air quality often reaches its yearly low in the depths of winter, when still, cold air holds local emissions from traffic and heating close to ground level. The transition into spring usually brings cleaner air, as more frequent rain and wind reduce the buildup of local pollution. Hot, stagnant summer air favours ozone formation, and dry vegetation nearby occasionally adds wildfire smoke to the mix during peak heat. Autumn typically starts mild and can still see occasional ozone or dust episodes before rain and cooler temperatures gradually restore cleaner conditions. This Mediterranean location benefits from regular sea breezes, though summer's higher traffic volumes and occasional Saharan dust events can offset that.

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.