Worst air pollution Holmestrand kommune, today and tomorrow
Today (9 August): Air quality in Holmestrand kommune is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 PM (O3: 33.4/100).
Tomorrow (10 August 2026): Air quality in Holmestrand kommune is fair. All pollutants stay as today. Pollution peaks around 12:00 AM (O3: 30.3/100). 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.
Holmestrand kommune's air quality reflects the inner Oslofjord coastal position, with vehicle traffic and the manufacturing, services, and residential corridor contributing local sources. Consistent Oslofjord maritime breezes provide ventilation and Holmestrand generally maintains moderate to good conditions throughout most of the year.
Today - 9 August | Pollution peaks at 22:00
AQI:
Fair
33.4/100
PM2.5 (fine particles):
Good
5.0/100
PM10 (coarse particles):
Good
1.8/100
NO2 (nitrogen dioxide):
Good
1.1/100
O3 (ozone):
Fair
33.4/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
3.8/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 00:00
AQI:
Fair
30.3/100
PM2.5 (fine particles):
Good
3.5/100
PM10 (coarse particles):
Good
1.2/100
NO2 (nitrogen dioxide):
Good
1.9/100
O3 (ozone):
Fair
30.3/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.4/100
PM1 (ultrafine particles):
Good
3.3/100
Pollen forecast in Holmestrand kommune
View pollen forecastFrequently Asked Questions
Is air quality bad in Holmestrand kommune right now?
On 9 August 2026, overall air quality in Holmestrand kommune is fair. AQI is the main air quality indicator at 33.4/100. Pollution peaks around 10:00 PM (O3: 33.4/100).
Will air quality be worse tomorrow in Holmestrand kommune?
On 10 August 2026, air quality conditions in Holmestrand kommune will be similar to today, with AQI forecast at fair at 30.3/100. Pollution peaks around 12:00 AM (O3: 30.3/100).
When is air pollution at its worst in Holmestrand kommune?
The main air quality concern in Holmestrand kommune arises when heavy commuter traffic coincides with calm winter weather, when farm machinery and traffic both add to emissions during the calmest winter spells. Once winds pick up again, conditions here usually clear quickly. The remainder of the year, Holmestrand kommune's air quality is typically unremarkable in a good way.
Are air quality levels in Holmestrand kommune 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 Norway?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 10 August 2026 at 02:34 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.
Get the full experience in the Airmine app.