What is the air quality in Heiloo today?

The current Air Quality Index (AQI) in Heiloo is 23 (Good). PM2.5 concentration is 5.4 µg/m³.

What is the temperature in Heiloo right now?

The current temperature in Heiloo is 13.4°C (feels like 13.4°C). Humidity is 77.2% and wind speed is 63.0 km/h.

Is it safe to go outside in Heiloo?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Heiloo, Netherlands

Windy

13.4°C · 77.2% humidity

13.4°

Feels 13.4°

Good

Air quality is satisfactory. Enjoy outdoor activities.

7 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

0 1am

23 4am

9 7am

3 10am

1 1pm

0 4pm

0 7pm

0 10pm

Station readings 4h ago

AQI 11

PM2.5 2.7 µg/m³ · 4h ago

CAMS model adj -27

Air Quality Index Trend

39h · 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.

77.2%

Humidity

63.0 km/h

Wind WSW

1017.6 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.4 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Heiloo?

Temperature & Precipitation

PM2.5 Trend

39h · 1 station

PM2.55.4 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (7 stations within 25 km)

5.4

Median

5.3

Average

1.9

Low

7.0

High

PM2.5 µg/m³ · Model: 6.0 · Bias: +0.6

What is the 7-day forecast for Heiloo?

06-09

14.5° 13.2°

1.31 mm

06-10

19.5° 12.6°

0.06 mm

06-11

15.7° 14.5°

2.06 mm

06-12

13.4° 12.5°

1.75 mm

06-13

17.5° 12.3°

06-14

16.2° 14.2°

0.5 mm

06-15

14.7° 13.4°

0.5 mm

Both models agree Avg diff: 2.3°C

Where are air quality stations near Heiloo?

PNH De Rijp

12.5 km PM2.5: 6.0 µg/m³

West, PNH Beverwijk

13.0 km PM2.5: 8.2 µg/m³

PNH Wijk aan Zee

13.4 km PM2.5: 13.1 µg/m³

–

Wijk aan Zee-Bosweg

13.9 km PM2.5: -2.2 µg/m³ PM10: 1.9 µg/m³

Staalstraat, Velsen

14.6 km PM2.5: 3.6 µg/m³

Wagenschotpad, Zaandam

19.3 km PM2.5: 5.8 µg/m³

Zaandam

20.2 km PM2.5: 17.3 µg/m³

Zaandam

20.2 km PM2.5: 8.6 µg/m³

Zaandam

20.2 km PM2.5: 32.1 µg/m³

Zaandam

20.2 km PM2.5: 4.3 µg/m³

What cities are near Heiloo?

24 Alkmaar 23 Castricum 23 Bergen 23 Heemskerk 25 Heerhugowaard 25 Beverwijk 24 Assendelft 25 Velsen-Zuid 23 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 2026-06-09T02:09 UTC.