What is the air quality in Heiloo today?

The current Air Quality Index (AQI) in Heiloo is 33 (Good). PM2.5 concentration is 8.04 µg/m³.

What is the temperature in Heiloo right now?

The current temperature in Heiloo is 14.9°C (feels like 14.9°C). Humidity is 90.1% and wind speed is 101.0 km/h.

Is it safe to go outside in Heiloo?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Heiloo, Netherlands

Drizzle

14.9°C · 90.1% humidity

14.9°

Feels 14.9°

Good

Air quality is satisfactory. Enjoy outdoor activities.

10 stations

Nearby Monitoring Stations

AQI Forecast

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Station readings

Air Quality Index Trend

47h · 1 stn

View full history →

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.

90.1%

Humidity

101.0 km/h

Wind W

1018.1 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5

8.04 µg/m³

PM10▲

41.2 µg/m³

050100150200300500

What is the weather forecast for Heiloo?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station

PM2.58.04 µg/m³ ✓ WHO

Good

PM1041.2 µg/m³

Good

UV INDEX0.0

Low

Station readings (10 stations within 25 km)

8.04

Median

7.62

Average

4.3

Low

12.0

High

PM2.5 µg/m³ · Model: 19.2 · Bias: +11.2

What is the 7-day forecast for Heiloo?

10-21

14.9° 9.6°

2.25 mm

10-22

16.0° 11.2°

3.62 mm

10-23

13.1° 10.2°

1.44 mm

10-24

13.5° 10.9°

0.69 mm

10-25

13.2° 10.4°

2.75 mm

10-26

15.2° 9.8°

3.56 mm

10-27

14.5° 7.7°

1.75 mm

Both models agree Avg diff: 2.1°C

Where are air quality stations near Heiloo?

PNH De Rijp

12.5 km PM2.5: 5.8 µg/m³

PNH Wijk aan Zee

13.4 km PM2.5: 12.0 µg/m³

Wijk aan Zee-Bosweg

13.9 km PM2.5: 9.7 µg/m³ PM10: 12.2 µg/m³

PNH Reijndersweg

15.6 km PM2.5: 10.3 µg/m³

Wagenschotpad, Zaandam

19.3 km PM2.5: 6.7 µg/m³

Zaandam

20.2 km PM2.5: 10.3 µg/m³

Zaandam

20.2 km PM2.5: 7.2 µg/m³

Zaandam

20.2 km PM2.5: 7.2 µg/m³

Zaandam

20.2 km PM2.5: 10.3 µg/m³

Zaandam

20.2 km PM2.5: 8.9 µg/m³

What cities are near Heiloo?

32 Alkmaar 36 Castricum 35 Bergen 37 Heemskerk 29 Heerhugowaard 38 Beverwijk 29 Assendelft 36 Velsen-Zuid 39 IJmuiden 28 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 2026-10-21T10:49 UTC.