Worst air pollution Järfälla, today and tomorrow
Today (16 July): Air quality in Järfälla is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 PM (O3: 30.3/100).
Tomorrow (17 July 2026): Air quality in Järfälla is fair. All pollutants stay as today. Pollution peaks around 2:00 PM (O3: 37.2/100). 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
Use our Strava plugin to check your own exposure.
For most of the year, air quality in Järfälla sits comfortably within good Swedish and European benchmarks. Logistics and light industry, together with ordinary road traffic, accounts for most of the area's local emissions. Because of its position near the Mälaren bay shoreline, the area rarely sees pollutants linger for more than a day or two. The combination of these factors keeps Järfälla's air quality within a range most residents would find unremarkable.
Today - 16 July | Pollution peaks at 19:00
AQI:
Fair
30.3/100
PM2.5 (fine particles):
Good
11.0/100
PM10 (coarse particles):
Good
3.5/100
NO2 (nitrogen dioxide):
Good
9.2/100
O3 (ozone):
Fair
30.3/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.4/100
PM1 (ultrafine particles):
Good
11.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 14:00
AQI:
Fair
37.2/100
PM2.5 (fine particles):
Good
10.9/100
PM10 (coarse particles):
Good
3.5/100
NO2 (nitrogen dioxide):
Good
11.9/100
O3 (ozone):
Fair
37.2/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.3/100
PM1 (ultrafine particles):
Good
10.8/100
Pollen forecast in Järfälla
View pollen forecastFrequently Asked Questions
Is air quality bad in Järfälla right now?
On 16 July 2026, overall air quality in Järfälla is fair. AQI is the main air quality indicator at 30.3/100. Pollution peaks around 7:00 PM (O3: 30.3/100).
Will air quality be worse tomorrow in Järfälla?
On 17 July 2026, air quality conditions in Järfälla will be similar to today, with AQI forecast at fair at 37.2/100. Pollution peaks around 2:00 PM (O3: 37.2/100).
When is air pollution at its worst in Järfälla?
Does air quality in Järfälla vary by season? Winter is generally when local emissions build up most, since cold, stagnant air limits how quickly wood-smoke and exhaust clear. Spring typically brings a steady improvement, with more unsettled, breezy weather flushing out accumulated pollutants. 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 is a transitional period: as the heating season resumes in September and October, occasional calm evenings can again trap wood-smoke locally. This pattern is fairly typical for central Sweden, where all four seasons are clearly distinct.
Are air quality levels in Järfälla 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.
Want to see air quality forecasts for other cities in Sweden?
Check air quality in other popular cities:
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