Worst air pollution Härnösand, today and tomorrow
Today (16 July): Air quality in Härnösand is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (O3: 20.2/100).
Tomorrow (17 July 2026): Air quality in Härnösand is fair. All pollutants stay as today. Pollution peaks around 2:00 PM (O3: 26.1/100). 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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Overall, Härnösand maintains air quality that compares well with Swedish and wider European norms. Forestry and public administration represents the area's most notable emission source, alongside routine road traffic through the centre. The area benefits from air movement associated with the mouth of the Ångermanälven river, which limits how long pollutants linger locally. The net effect is that Härnösand experiences air quality broadly consistent with comparable Swedish towns.
Today - 16 July | Pollution peaks at 17:00
AQI:
Fair
20.2/100
PM2.5 (fine particles):
Good
7.4/100
PM10 (coarse particles):
Good
2.3/100
NO2 (nitrogen dioxide):
Good
1.8/100
O3 (ozone):
Fair
20.2/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.3/100
PM1 (ultrafine particles):
Good
7.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 14:00
AQI:
Fair
26.1/100
PM2.5 (fine particles):
Good
7.3/100
PM10 (coarse particles):
Good
2.6/100
NO2 (nitrogen dioxide):
Good
4.4/100
O3 (ozone):
Fair
26.1/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.7/100
PM1 (ultrafine particles):
Good
7.3/100
Pollen forecast in Härnösand
View pollen forecastFrequently Asked Questions
Is air quality bad in Härnösand right now?
On 16 July 2026, overall air quality in Härnösand is fair. AQI is the main air quality indicator at 20.2/100. Pollution peaks around 5:00 PM (O3: 20.2/100).
Will air quality be worse tomorrow in Härnösand?
On 17 July 2026, air quality conditions in Härnösand will be similar to today, with AQI forecast at fair at 26.1/100. Pollution peaks around 2:00 PM (O3: 26.1/100).
When is air pollution at its worst in Härnösand?
When is air quality typically worst in Härnösand? 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. The year's most consistently good air usually falls in summer, when heating season has ended and ventilation improves. Autumn is a transitional period: as the heating season resumes in September and October, occasional calm evenings can again trap wood-smoke locally. Because winters here are longer and colder, the seasonal contrast tends to be sharper than in southern Sweden.
Are air quality levels in Härnösand 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?
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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