Air Quality in Heiloo, Netherlands

Windy
15.0°C · 57.6% humidity
15.0°
Feels 15.0°
27
Good
Air quality is satisfactory. Enjoy outdoor activities.
6 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
25 2pm
28
32
27 5pm
34
39
43 8pm
25
27
29 11pm
30
30
24 2am
24
24
25 5am
25
25
25 8am
32
32
32 11am
32
25
Station readings
25
28
CAMS model adj -2
34
34
34
54
54
54
54
34
34
34
34
34
27
27
27
27
27
27
27
34
34
34
34
27
AD 728×90

Air Quality Index Trend

42h · 4 stn

Heiloo's air quality is shaped by traffic emissions and residential heating. Pollution levels tend to peak during winter months when cold air traps emissions close to ground level.

57.6%
Humidity
49.3 km/h
Wind NW
1029.4 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
27
6.55 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Heiloo?

Temperature & Precipitation

PM2.5 Trend

42h · 4 stations
PM2.56.55 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (6 stations within 25 km)
6.55
Median
6.32
Average
5.3
Low
8.2
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +3.2

What is the 7-day forecast for Heiloo?

09-05
17.8° 15.0°
0.63 mm
09-06
18.8° 16.7°
2.19 mm
09-07
17.8° 15.7°
2.0 mm
09-08
18.6° 16.0°
9.13 mm
09-09
19.0° 15.2°
3.19 mm
09-10
18.5° 13.0°
0.13 mm
09-11
15.0° 13.2°
1.56 mm
Both models agree Avg diff: 1.9°C

Where are air quality stations near Heiloo?

26
West, PNH Beverwijk
13.0 km PM2.5: 6.2 µg/m³
26
West, PNH Beverwijk
13.0 km PM2.5: 6.2 µg/m³
34
PNH Wijk aan Zee
13.4 km PM2.5: 8.2 µg/m³
33
Wijk aan Zee-Bosweg
13.9 km PM2.5: 7.9 µg/m³ PM10: 17.1 µg/m³
24
PNH Reijndersweg
15.6 km PM2.5: 5.8 µg/m³
26
Wagenschotpad, Zaandam
19.3 km PM2.5: 6.2 µg/m³
26
Wagenschotpad, Zaandam
19.3 km PM2.5: 6.2 µg/m³
25
Zaandam
20.2 km PM2.5: 6.0 µg/m³
23
Zaandam
20.2 km PM2.5: 5.5 µg/m³
27
Zaandam
20.2 km PM2.5: 6.5 µg/m³

What cities are near Heiloo?

28 Alkmaar 28 Castricum 28 Bergen 28 Heemskerk 22 Heerhugowaard 27 Beverwijk 28 Assendelft 28 Velsen-Zuid 28 IJmuiden 26 Zaanstad
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T15:06 UTC.