Highest air pollution Haarlem, today and tomorrow
Today (30 June): Air quality in Haarlem is medium. AQI and NO2 are medium; PM2.5, PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 AM (NO2: 40.3/100).
Tomorrow (1 July 2026): Air quality in Haarlem is fair. O3 increases to fair; all other pollutants stay as today. Pollution peaks around 5:00 AM (NO2: 42.7/100). 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
Haarlem's air quality reflects its position in the Dutch coastal zone west of Amsterdam, benefiting from consistent North Sea westerlies providing clean Atlantic maritime ventilation across this historic city on the Spaarne river. Vehicle traffic on the A9 and the surrounding logistics and service industry contribute the primary local sources, while the flat Dutch coastal polder landscape and open North Sea fetch generally allow good dispersal and keep readings below the Amsterdam canal ring averages throughout most of the year.
Today - 30 June | Pollution peaks at 05:00
AQI:
Medium
40.3/100
PM2.5 (fine particles):
Good
11.7/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Medium
40.3/100
O3 (ozone):
Good
19.8/100
SO2 (sulfur dioxide):
Good
4.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.8/100
PM1 (ultrafine particles):
Good
11.1/100
Levels show the poorest local air quality during the day
Tomorrow - 1 July | Pollution peaks at 05:00
AQI:
Medium
42.7/100
PM2.5 (fine particles):
Good
14.2/100
PM10 (coarse particles):
Good
4.8/100
NO2 (nitrogen dioxide):
Medium
42.7/100
O3 (ozone):
Fair
28.9/100
SO2 (sulfur dioxide):
Good
4.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.5/100
PM1 (ultrafine particles):
Good
13.4/100
Pollen forecast in Haarlem
View pollen forecastFrequently Asked Questions
Is air quality bad in Haarlem right now?
On 30 June 2026, overall air quality in Haarlem is medium. AQI is the main air quality indicator at 40.3/100. Pollution peaks around 5:00 AM (NO2: 40.3/100).
Will air quality be worse tomorrow in Haarlem?
On 1 July 2026, air quality conditions in Haarlem will be worse than today, with O3 forecast at fair at 28.9/100. Pollution peaks around 5:00 AM (NO2: 42.7/100).
Are air quality levels in Haarlem 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.
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Data provided by Airmine — Last update: 30 June 2026 at 12:39 CET (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
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team