Worst air pollution Palau Sant Jordi - Barcelona, today and tomorrow
Today (20 September): Air quality in Palau Sant Jordi is moderate. AQI, PM2.5, and NO2 are moderate; O3 is fair; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (NO2: 51.2/100).
Tomorrow (21 September 2026): Air quality in Palau Sant Jordi is poor. AQI worsens to poor; NO2 increases to poor; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 AM (NO2: 61.2/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Local air quality in Palau Sant Jordi depends heavily on crowd-related vehicle idling and matchday traffic congestion. Air quality is normal on non-event days but dips sharply for a few hours around fixtures. Public transport use for events has reduced car-related emissions around the venue in recent years.
Today - 20 September | Pollution peaks at 10:00
AQI:
Moderate
51.2/100
PM2.5 (fine particles):
Moderate
40.4/100
PM10 (coarse particles):
Good
17.8/100
NO2 (nitrogen dioxide):
Moderate
51.2/100
O3 (ozone):
Fair
30.3/100
SO2 (sulfur dioxide):
Good
2.8/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
5.3/100
PM1 (ultrafine particles):
Good
16.5/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 11:00
AQI:
Poor
61.2/100
PM2.5 (fine particles):
Moderate
42.8/100
PM10 (coarse particles):
Good
19.8/100
NO2 (nitrogen dioxide):
Poor
61.2/100
O3 (ozone):
Fair
28.2/100
SO2 (sulfur dioxide):
Good
4.6/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
6.4/100
PM1 (ultrafine particles):
Fair
23.5/100
Other Landmarks in Barcelona
Sports venues in Barcelona
Frequently Asked Questions
Is air quality bad in Palau Sant Jordi right now?
On 20 September 2026, overall air quality in Palau Sant Jordi is moderate. AQI is the main air quality indicator at 51.2/100. Pollution peaks around 10:00 AM (NO2: 51.2/100).
Will air quality be worse tomorrow in Palau Sant Jordi?
On 21 September 2026, air quality conditions in Palau Sant Jordi will be worse than today, with AQI forecast at poor at 61.2/100. Pollution peaks around 11:00 AM (NO2: 61.2/100).
When is air pollution at its worst in Palau Sant Jordi?
What is the yearly air quality pattern like in Palau Sant Jordi? Air quality is typically at its weakest in December and January, when cold, calm high-pressure spells trap traffic exhaust and wood-smoke close to the ground instead of letting it disperse. As spring progresses, wetter and windier conditions generally help flush out the traffic and heating pollution that built up over winter. Summer heat and intense sunlight drive photochemical ozone production, which can push afternoon air quality readings higher despite reduced winter-style pollution sources. Conditions tend to stabilise in autumn, as cooling weather and increasing rain reduce the ozone spikes typical of summer. Coastal sea breezes here usually aid dispersal, but summer visitor traffic and periodic dust intrusions from North Africa can still cause spikes.
Are air quality levels in Palau Sant Jordi based on measurements or forecasts?
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.
Why doesn’t the forecast always reflect wildfire impacts?
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.
Want to see air quality forecasts for other cities in Spain?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 20 September 2026 at 14:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
Get the full experience in the Airmine app.