Worst air pollution Tarrasa, today and tomorrow
Today (16 July): Air quality in Tarrasa is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 53.1/100).
Tomorrow (17 July 2026): Air quality in Tarrasa is fair. PM2.5 increases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 57.0/100). 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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Terrassa's air quality reflects its position in the Barcelona metropolitan area's Vallès Occidental industrial corridor, with vehicle traffic on the C-58 and AP-7 motorways and the surrounding textile, chemical, and automotive manufacturing industry contributing elevated NO₂ and PM2.5. The Collserola ridge to the southeast and the Prelitoral mountain range to the northeast create partial topographic enclosure, while the Vallès plain's typical sea breeze from Barcelona Bay provides afternoon ventilation relief during the summer months.
Today - 16 July | Pollution peaks at 15:00
AQI:
Medium
53.1/100
PM2.5 (fine particles):
Good
17.3/100
PM10 (coarse particles):
Good
11.1/100
NO2 (nitrogen dioxide):
Fair
29.5/100
O3 (ozone):
Medium
53.1/100
SO2 (sulfur dioxide):
Good
4.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.6/100
PM1 (ultrafine particles):
Good
16.5/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Medium
57.0/100
PM2.5 (fine particles):
Fair
21.2/100
PM10 (coarse particles):
Good
10.2/100
NO2 (nitrogen dioxide):
Fair
32.5/100
O3 (ozone):
Medium
57.0/100
SO2 (sulfur dioxide):
Good
3.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.1/100
PM1 (ultrafine particles):
Fair
20.8/100
Pollen forecast in Tarrasa
View pollen forecastFrequently Asked Questions
Is air quality bad in Tarrasa right now?
On 16 July 2026, overall air quality in Tarrasa is fair. NO2 is the main pollutant at 29.5/100. Pollution peaks around 3:00 PM (O3: 53.1/100).
Will air quality be worse tomorrow in Tarrasa?
On 17 July 2026, air quality conditions in Tarrasa will be similar to today, with NO2 forecast at fair at 32.5/100. Pollution peaks around 3:00 PM (O3: 57.0/100).
When is air pollution at its worst in Tarrasa?
What is the yearly air quality pattern like in Tarrasa? Winter mornings are frequently the year's most polluted, as fog and calm conditions trap traffic fumes and smoke from wood stoves close to the ground. March through May tends to see steady improvement, with more unsettled weather patterns helping disperse traffic and heating pollution. Summer brings its own challenge in the form of ground-level ozone, which forms readily under strong sunshine and high temperatures, particularly during heatwaves. Conditions tend to stabilise in autumn, as cooling weather and increasing rain reduce the ozone spikes typical of summer. 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 Tarrasa 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.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app