Worst air pollution Södertälje, today and tomorrow
Today (16 July): Air quality in Södertälje is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 PM (O3: 32.3/100).
Tomorrow (17 July 2026): Air quality in Södertälje is fair. All pollutants stay as today. Pollution peaks around 1:00 PM (O3: 33.9/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Södertälje's air quality reflects the Stockholm metropolitan area's southwestern industrial corridor, with the Scania and AstraZeneca manufacturing operations generating vehicle and pharmaceutical industrial emissions alongside vehicle traffic on the E4. The Södertälje canal and Lake Mälaren provide natural ventilation, while the surrounding Stockholm archipelago generally maintains moderate Swedish urban air quality levels and the industrial manufacturing character makes Södertälje Stockholm's most distinctively industrial-defined suburban environment.
Today - 16 July | Pollution peaks at 18:00
AQI:
Fair
32.3/100
PM2.5 (fine particles):
Good
19.3/100
PM10 (coarse particles):
Good
6.2/100
NO2 (nitrogen dioxide):
Fair
23.9/100
O3 (ozone):
Fair
32.3/100
SO2 (sulfur dioxide):
Good
3.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.9/100
PM1 (ultrafine particles):
Good
18.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Fair
33.9/100
PM2.5 (fine particles):
Good
18.1/100
PM10 (coarse particles):
Good
6.0/100
NO2 (nitrogen dioxide):
Fair
27.5/100
O3 (ozone):
Fair
33.9/100
SO2 (sulfur dioxide):
Good
5.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.6/100
PM1 (ultrafine particles):
Good
17.3/100
Pollen forecast in Södertälje
View pollen forecastFrequently Asked Questions
Is air quality bad in Södertälje right now?
On 16 July 2026, overall air quality in Södertälje is fair. AQI is the main air quality indicator at 32.3/100. Pollution peaks around 6:00 PM (O3: 32.3/100).
Will air quality be worse tomorrow in Södertälje?
On 17 July 2026, air quality conditions in Södertälje will be similar to today, with AQI forecast at fair at 33.9/100. Pollution peaks around 1:00 PM (O3: 33.9/100).
When is air pollution at its worst in Södertälje?
How does air quality change throughout the year in Södertälje? Air quality dips are most common in winter, when heating season overlaps with the calm, cold weather that traps local emissions. From spring onward, increasing wind and precipitation generally break up the stagnant conditions that caused winter dips. Most of the year's best readings occur in summer, with only rare hot, calm days causing a temporary rise in ground-level ozone. Autumn generally marks the year's decline back toward winter conditions, driven mainly by the return of wood-burning and stiller air. The seasonal swing here is fairly pronounced, typical of central Swedish towns away from the immediate coast.
Are air quality levels in Södertälje 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