What is the air quality in Heiloo today?

The current Air Quality Index (AQI) in Heiloo is 27 (Good). PM2.5 concentration is 6.49 µg/m³.

What is the temperature in Heiloo right now?

The current temperature in Heiloo is 17.6°C (feels like 17.6°C). Humidity is 66.1% and wind speed is 97.9 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

17.6°C · 66.1% humidity

17.6°

Feels 17.6°

Good

Air quality is satisfactory. Enjoy outdoor activities.

9 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

— 7pm

—

— 10pm

—

— 1am

—

— 4am

—

— 7am

—

— 10am

—

— 1pm

—

— 4pm

—

Station readings 6h ago

AQI 4

PM2.5 1.0 µg/m³ · 6h ago

CAMS model adj -28

Air Quality Index Trend

31h · 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.

66.1%

Humidity

97.9 km/h

Wind WNW

1014.2 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.49 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Heiloo?

Temperature & Precipitation

PM2.5 Trend

31h · 1 station

PM2.56.49 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (9 stations within 25 km)

6.49

Median

6.51

Average

0.1

Low

11.0

High

PM2.5 µg/m³ · Model: 6.25 · Bias: -0.2

What is the 7-day forecast for Heiloo?

07-21

18.5° 16.2°

3.06 mm

07-22

18.7° 15.7°

3.0 mm

07-23

17.9° 16.2°

3.25 mm

07-24

18.4° 16.3°

1.37 mm

07-25

20.0° 15.2°

07-26

24.3° 16.1°

1.44 mm

07-27

19.1° 18.1°

1.38 mm

Both models agree Avg diff: 1.4°C

Where are air quality stations near Heiloo?

PNH De Rijp

12.5 km PM2.5: 23.0 µg/m³

West, PNH Beverwijk

13.0 km PM2.5: 5.5 µg/m³

PNH Wijk aan Zee

13.4 km PM2.5: 15.0 µg/m³

–

Wijk aan Zee-Bosweg

13.9 km PM2.5: -1.0 µg/m³ PM10: 2.2 µg/m³

Staalstraat, Velsen

14.6 km PM2.5: 5.5 µg/m³

Wagenschotpad, Zaandam

19.3 km PM2.5: 6.2 µg/m³

Zaandam

20.2 km PM2.5: 10.8 µg/m³

Zaandam

20.2 km PM2.5: 6.5 µg/m³

Zaandam

20.2 km PM2.5: 2.2 µg/m³

Zaandam

20.2 km PM2.5: 9.1 µg/m³

What cities are near Heiloo?

32 Alkmaar 24 Castricum 29 Bergen 22 Heemskerk 43 Heerhugowaard 23 Beverwijk 29 Assendelft 24 Velsen-Zuid 21 IJmuiden 28 Zaanstad

Get AQI alerts for Heiloo

Notify me when air quality reaches:

ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T20:44 UTC.