What is the air quality in Heiloo today?

The current Air Quality Index (AQI) in Heiloo is 20 (Good). PM2.5 concentration is 4.7 µg/m³.

What is the temperature in Heiloo right now?

The current temperature in Heiloo is 13.2°C (feels like 13.2°C). Humidity is 71.9% and wind speed is 117.4 km/h.

Is it safe to go outside in Heiloo?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 12.9 (Extreme).

Air Quality in Heiloo, Netherlands

Drizzle

13.2°C · 71.9% humidity

13.2°

Feels 13.2°

Good

Air quality is satisfactory. Enjoy outdoor activities.

6 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

7 9am

20 12pm

13 3pm

9 6pm

6 9pm

5 12am

5 3am

5 6am

Station readings 7h ago

AQI 4

PM2.5 1.0 µg/m³ · 7h ago

CAMS model adj -20

Air Quality Index Trend

35h · 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.

71.9%

Humidity

117.4 km/h

Wind WSW

1013.3 hPa

Pressure

12.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.7 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Heiloo?

Temperature & Precipitation

PM2.5 Trend

35h · 1 station

PM2.54.7 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX12.9

Extreme

Station readings (6 stations within 25 km)

4.7

Median

4.58

Average

2.3

Low

6.7

High

PM2.5 µg/m³ · Model: 5.9 · Bias: +1.2

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: 3.1 µg/m³

West, PNH Beverwijk

13.0 km PM2.5: 14.0 µg/m³

PNH Wijk aan Zee

13.4 km PM2.5: 6.5 µg/m³

Wijk aan Zee-Bosweg

13.9 km PM2.5: 1.6 µg/m³ PM10: 11.5 µg/m³

Staalstraat, Velsen

14.6 km PM2.5: 5.8 µg/m³

Wagenschotpad, Zaandam

19.3 km PM2.5: 18.8 µg/m³

Zaandam

20.2 km PM2.5: 5.3 µg/m³

Zaandam

20.2 km PM2.5: 17.3 µg/m³

Zaandam

20.2 km PM2.5: 32.1 µg/m³

Zaandam

20.2 km PM2.5: 1.2 µg/m³

What cities are near Heiloo?

21 Alkmaar 20 Castricum 20 Bergen 20 Heemskerk 18 Heerhugowaard 20 Beverwijk 21 Assendelft 20 Velsen-Zuid 20 IJmuiden 19 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 2026-06-09T10:47 UTC.