Worst air pollution El Coll - Barcelona, today and tomorrow
Today (20 September): Air quality in El Coll is moderate. AQI and PM2.5 are moderate; PM10, NO2, O3, and PM1 are fair; SO2, CO, and HCHO are good. Pollution peaks around 1:00 AM (PM2.5: 41.2/100).
Tomorrow (21 September 2026): Air quality in El Coll is moderate. NO2 increases to moderate; all other pollutants stay as today. Pollution peaks around 10:00 PM (NO2: 46.1/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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El Coll's dominant local factors are port and shipping emissions and road traffic. Levels vary sharply between the busy centre and quieter residential districts. Low-emission zone restrictions in the centre have reduced traffic-related pollution somewhat.
Today - 20 September | Pollution peaks at 01:00
AQI:
Moderate
41.2/100
PM2.5 (fine particles):
Moderate
41.2/100
PM10 (coarse particles):
Fair
22.7/100
NO2 (nitrogen dioxide):
Fair
35.2/100
O3 (ozone):
Fair
27.6/100
SO2 (sulfur dioxide):
Good
2.7/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
9.9/100
PM1 (ultrafine particles):
Fair
25.0/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 22:00
AQI:
Moderate
46.1/100
PM2.5 (fine particles):
Moderate
40.5/100
PM10 (coarse particles):
Fair
21.6/100
NO2 (nitrogen dioxide):
Moderate
46.1/100
O3 (ozone):
Fair
27.3/100
SO2 (sulfur dioxide):
Good
3.4/100
CO (carbon monoxide):
Good
0.8/100
HCHO (formaldehyde):
Good
10.6/100
PM1 (ultrafine particles):
Fair
25.8/100
Other Landmarks in Barcelona
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Frequently Asked Questions
Is air quality bad in El Coll right now?
On 20 September 2026, overall air quality in El Coll is moderate. AQI is the main air quality indicator at 41.2/100. Pollution peaks around 1:00 AM (PM2.5: 41.2/100).
Will air quality be worse tomorrow in El Coll?
On 21 September 2026, air quality conditions in El Coll will be similar to today, with AQI forecast at moderate at 46.1/100. Pollution peaks around 10:00 PM (NO2: 46.1/100).
When is air pollution at its worst in El Coll?
How does air quality change throughout the year in El Coll? Winter high-pressure systems tend to produce the year's worst episodes, as still air traps traffic fumes and heating smoke at ground level. By spring, air quality usually starts trending upward as the calm winter inversions give way to more unsettled, breezier weather. The heat of summer drives up ozone formation, and dry conditions occasionally bring smoke from regional wildfires into the mix. Autumn usually sees a steady return to cleaner conditions as the ozone-favouring heat of summer fades and rainfall picks up. 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 El Coll 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.
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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.
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