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Wassenaar (South Holland) (NL)

Air Quality Trend (last 7 days)

Good (0-50)
Moderate (51-100)
Unhealthy for Sensitive Groups (101-150)
Unhealthy (151-200)
Very Unhealthy (201-300)
Hazardous (300+)

Weather - 48h MET Norway

Bewölkt
5°C
Bewölkt
Humidity
94.9%
Wind
5 m/s
Pressure
1005.2 hPa
Direction
154°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
4° / 7°
Precip.
3.1mm
Max wind
6.5 m/s

Hourly Forecast

01.02
Now
Weather
5
01.02
11:00
Weather
01.02
12:00
Weather
01.02
13:00
Weather
01.02
14:00
Weather
01.02
15:00
Weather
01.02
16:00
Weather
01.02
17:00
Weather
01.02
18:00
Weather
01.02
19:00
Weather
01.02
20:00
Weather
01.02
21:00
Weather
01.02
22:00
Weather
01.02
23:00
Weather
02.02
00:00
Weather
02.02
01:00
Weather
0.2
5
02.02
02:00
Weather
0.6
6
02.02
03:00
Weather
0.6
6
02.02
04:00
Weather
0.9
6
02.02
05:00
Weather
0.3
6
02.02
06:00
Weather
0.3
7
02.02
07:00
Weather
0.2
6
02.02
08:00
Weather
6
02.02
09:00
Weather
6

Temperature

7°C
4°C
10:00
5°C
11:00
6°C
12:00
7°C
13:00
7°C
14:00
7°C
15:00
7°C
16:00
7°C
17:00
7°C
18:00
7°C
19:00
6°C
20:00
6°C
21:00
6°C
22:00
6°C
23:00
5°C
00:00
6°C
01:00
5°C
02:00
5°C
03:00
5°C
04:00
5°C
05:00
4°C
06:00
4°C
07:00
4°C
08:00
4°C
09:00
4°C
10:00 21:00 09:00

Precipitation

0.9mm
0mm
01:00
0.2mm
02:00
0.6mm
03:00
0.6mm
04:00
0.9mm
05:00
0.3mm
06:00
0.3mm
07:00
0.2mm
10:00 21:00 09:00

Wind

6.5m/s
0m/s
10:00
5.2 m/s
11:00
4.9 m/s
12:00
4.6 m/s
13:00
4.8 m/s
14:00
4.5 m/s
15:00
4.2 m/s
16:00
3.8 m/s
17:00
3.8 m/s
18:00
3.9 m/s
19:00
4.1 m/s
20:00
4.1 m/s
21:00
4.3 m/s
22:00
4.6 m/s
23:00
4.5 m/s
00:00
4.9 m/s
01:00
5.3 m/s
02:00
5.5 m/s
03:00
5.6 m/s
04:00
6 m/s
05:00
6.2 m/s
06:00
6.5 m/s
07:00
6.4 m/s
08:00
6.2 m/s
09:00
5.5 m/s
10:00 21:00 09:00

Radiation

0.085 uSv
4.6 km
10.6%

Measurement time: 2026-02-01 08:00

source: remap_europe

We display the worst measurements from all stations in the area. This approach provides a more cautious assessment of air quality, accounting for local pollution sources.

AQI
10.9 km
152
50.7%

Measurement time: 2026-02-01 10:00

Calculated from PM2.5/PM10

PM2.5
10.9 km
59 µg/m3
70.2%

Measurement time: 2026-02-01 10:00

source: Aqicn

O3
83.2 km
39.86 µg/m3
24.9%

Measurement time: 2026-02-01 10:18

source: OpenWeatherMap

PM10
49.5 km
28 µg/m3
20%

Measurement time: 2026-02-01 10:00

source: Aqicn

NO2
49.8 km
10.7 µg/m3
5.4%

Measurement time: 2026-02-01 10:00

source: Aqicn

CO
83.2 km
0.20588 mg/m3
1.5%

Measurement time: 2026-02-01 10:18

source: OpenWeatherMap

SO2
83.2 km
0.89 µg/m3
0.3%

Measurement time: 2026-02-01 10:18

source: OpenWeatherMap

About Air Quality in Wassenaar

Air quality in Wassenaar is monitored in real-time by sensors and measurement stations. On this page you'll find current data on major air pollutants including particulate matter PM2.5 and PM10, nitrogen dioxide (NO2), ozone (O3), and radiation levels.

Common Pollutants in Wassenaar

  • PM2.5 - fine particulate matter up to 2.5 micrometers, particularly harmful to health
  • PM10 - particulate matter up to 10 micrometers from traffic and industry
  • NO2 - nitrogen dioxide mainly emitted by vehicles
  • O3 - tropospheric ozone formed in photochemical reactions

When is Air Quality Best in Wassenaar?

Generally, the best air quality occurs:

  • Early morning (5:00-7:00 AM) before rush hour traffic
  • After rainfall which cleanses the atmosphere
  • During strong winds that disperse pollutants
  • In summer months when heating systems are less used

Tips for Runners in Wassenaar

If you're planning outdoor activities in Wassenaar, always check the current AQI value. When AQI exceeds 100, consider moving your workout indoors or shortening the distance. People with respiratory issues, children, and seniors should be especially cautious during elevated pollution levels. Choose routes away from busy streets and industrial areas.