Worst air pollution Heemskerk, today and tomorrow
Today (16 July): Air quality in Heemskerk is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (O3: 30.8/100).
Tomorrow (17 July 2026): Air quality in Heemskerk is fair. All pollutants stay as today. Pollution peaks around 5:00 PM (O3: 33.2/100). 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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As a commuter town near the coast within Noord-Holland, Heemskerk's air quality is shaped by its setting, as vehicles on the A9 and the town's own industry make up the bulk of local emissions. With the North Sea Canal in the vicinity aiding air flow, and the Tata Steel works and dune reserve part of the local picture, readings stay close to the national norm.
Today - 16 July | Pollution peaks at 17:00
AQI:
Fair
30.8/100
PM2.5 (fine particles):
Good
9.4/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Fair
25.0/100
O3 (ozone):
Fair
30.8/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.5/100
PM1 (ultrafine particles):
Good
8.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 17:00
AQI:
Fair
33.2/100
PM2.5 (fine particles):
Good
10.2/100
PM10 (coarse particles):
Good
3.7/100
NO2 (nitrogen dioxide):
Fair
29.8/100
O3 (ozone):
Fair
33.2/100
SO2 (sulfur dioxide):
Good
2.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
7.9/100
Pollen forecast in Heemskerk
View pollen forecastFrequently Asked Questions
Is air quality bad in Heemskerk right now?
On 16 July 2026, overall air quality in Heemskerk is fair. AQI is the main air quality indicator at 30.8/100. Pollution peaks around 5:00 PM (O3: 30.8/100).
Will air quality be worse tomorrow in Heemskerk?
On 17 July 2026, air quality conditions in Heemskerk will be similar to today, with AQI forecast at fair at 33.2/100. Pollution peaks around 5:00 PM (O3: 33.2/100).
When is air pollution at its worst in Heemskerk?
Heemskerk typically sees the birch, oak, and alder pollen peak during spring and the start of summer, alongside calm, warm days when traffic on the A9 and industry emissions accumulate, as the periods to watch; the proximity to open water generally keeps dispersal conditions favourable. The calmer months in between generally keep Heemskerk close to typical Dutch air quality levels.
Are air quality levels in Heemskerk 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 Netherlands?
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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