Worst air pollution Järfälla, today and tomorrow
Today (30 August): 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 2:00 PM (O3: 28.7/100).
Tomorrow (31 August 2026): Air quality in Järfälla is fair. All pollutants stay as today. Pollution peaks around 5:00 PM (O3: 27.1/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
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 - 30 August | Pollution peaks at 14:00
AQI:
Fair
28.7/100
PM2.5 (fine particles):
Good
6.8/100
PM10 (coarse particles):
Good
2.4/100
NO2 (nitrogen dioxide):
Good
5.9/100
O3 (ozone):
Fair
28.7/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.3/100
PM1 (ultrafine particles):
Good
7.0/100
Levels show the poorest local air quality during the day
Tomorrow - 31 August | Pollution peaks at 17:00
AQI:
Fair
27.1/100
PM2.5 (fine particles):
Good
3.7/100
PM10 (coarse particles):
Good
1.2/100
NO2 (nitrogen dioxide):
Good
11.4/100
O3 (ozone):
Fair
27.1/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.7/100
PM1 (ultrafine particles):
Good
4.1/100
Pollen forecast in Järfälla
View pollen forecastFrequently Asked Questions
Is air quality bad in Järfälla right now?
On 30 August 2026, overall air quality in Järfälla is fair. AQI is the main air quality indicator at 28.7/100. Pollution peaks around 2:00 PM (O3: 28.7/100).
Will air quality be worse tomorrow in Järfälla?
On 31 August 2026, air quality conditions in Järfälla will be similar to today, with AQI forecast at fair at 27.1/100. Pollution peaks around 5:00 PM (O3: 27.1/100).
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.
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.
Want to see air quality forecasts for other cities in Sweden?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 30 August 2026 at 20:26 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.
Get the full experience in the Airmine app.