Worst air pollution El Born - Barcelona, today and tomorrow
Today (20 September): Air quality in El Born is moderate. AQI and NO2 are moderate; PM2.5 and O3 are fair; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (NO2: 41.8/100).
Tomorrow (21 September 2026): Air quality in El Born is moderate. PM2.5 increases to moderate; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 AM (NO2: 48.3/100). 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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In El Born, road traffic and port and shipping emissions play the biggest role locally. Levels vary sharply between the busy centre and quieter residential districts. Sea breeze usually helps clear the air by early afternoon.
Today - 20 September | Pollution peaks at 10:00
AQI:
Moderate
41.8/100
PM2.5 (fine particles):
Fair
37.3/100
PM10 (coarse particles):
Good
17.8/100
NO2 (nitrogen dioxide):
Moderate
41.8/100
O3 (ozone):
Fair
27.8/100
SO2 (sulfur dioxide):
Good
2.8/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
5.3/100
PM1 (ultrafine particles):
Good
13.2/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 11:00
AQI:
Moderate
48.3/100
PM2.5 (fine particles):
Moderate
41.5/100
PM10 (coarse particles):
Good
19.8/100
NO2 (nitrogen dioxide):
Moderate
48.3/100
O3 (ozone):
Fair
25.9/100
SO2 (sulfur dioxide):
Good
4.6/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
6.4/100
PM1 (ultrafine particles):
Fair
20.0/100
Other Landmarks in Barcelona
Sports venues in Barcelona
Frequently Asked Questions
Is air quality bad in El Born right now?
On 20 September 2026, overall air quality in El Born is moderate. AQI is the main air quality indicator at 41.8/100. Pollution peaks around 10:00 AM (NO2: 41.8/100).
Will air quality be worse tomorrow in El Born?
On 21 September 2026, air quality conditions in El Born will be similar to today, with AQI forecast at moderate at 48.3/100. Pollution peaks around 11:00 AM (NO2: 48.3/100).
When is air pollution at its worst in El Born?
Does air quality in El Born vary by season? 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. Conditions tend to ease in spring, as more active weather systems bring the wind and rain needed to disperse ground-level pollution. Hot, dry summer conditions favour ozone formation, so afternoon readings can rise even when traffic and heating pollution are otherwise low. Autumn is typically a recovery period, with increasing rainfall and cooler air gradually reducing both ozone and traffic-related pollution. The mild, breezy Mediterranean climate generally supports good dispersal, though summer crowds and Saharan dust intrusions can occasionally push levels higher.
Are air quality levels in El Born 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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