Worst air pollution Sagrada Família - Barcelona, today and tomorrow

On 9 August 2026, overall air quality in Sagrada Família is fair. O3 is the main pollutant at 35.9/100. Pollution peaks around 6:00 AM (NO2: 47.5/100).

On 10 August 2026, air quality conditions in Sagrada Família will be similar to today, with O3 forecast at fair at 35.7/100. Pollution peaks around 4:00 AM (NO2: 43.3/100).

When is air quality typically worst in Sagrada Família? The winter months typically bring the weakest air quality of the year, as calm anticyclonic conditions trap vehicle and heating pollution near the surface. Spring is typically when conditions begin improving, as increasing wind speeds help disperse traffic emissions before they can accumulate. High summer temperatures and strong sun exposure drive ozone levels up, occasionally combined with smoke from nearby wildfires during dry spells. Air quality usually improves through autumn, as returning rains and cooling temperatures wash out summer's ozone and dust build-up. Being on the Mediterranean coast helps with dispersal most of the year, though summer tourism and North African dust episodes remain a factor.

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.