Air Quality in Leiden, Netherlands

Drizzle
13.9°C · 72.3% humidity
13.9°
Feels 13.9°
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
13 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
6 4am
6
2
29 7am
22
16
13 10am
10
8
7 1pm
8
7
6 4pm
6
6
5 7pm
5
3
3 10pm
3
3
3 1am
3
3
Station readings
6
6
2
CAMS model adj -22
25
25
25
25
25
25
25
25
25
25
27
27
27
27
27
27
27
25
25
25
25
25
25
25
AD 728×90

Air Quality Index Trend

47h · 3 stn

Leiden'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.

72.3%
Humidity
61.9 km/h
Wind WNW
1020.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
29
6.97 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Leiden?

Temperature & Precipitation

PM2.5 Trend

47h · 3 stations
PM2.56.97 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (13 stations within 25 km)
6.97
Median
5.02
Average
0.2
Low
10.1
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -1.1

What is the 7-day forecast for Leiden?

06-09
17.2° 13.1°
1.62 mm
06-10
21.1° 13.0°
1.0 mm
06-11
17.9° 15.4°
0.56 mm
06-12
14.7° 12.4°
0.44 mm
06-13
18.6° 12.0°
0.38 mm
06-14
18.9° 14.4°
0.31 mm
06-15
15.8° 13.6°
2.38 mm
Both models agree Avg diff: 2.6°C

Where are air quality stations near Leiden?

38
Willem de Zwijgerlaan, Leiden
1.4 km PM2.5: 9.1 µg/m³
2
netherlands-voorhout-linnaeuslaan
6.8 km 13.4°C 73.7% RH PM2.5: 0.6 µg/m³ PM10: 1.2 µg/m³
3
netherlands-laak-binckhorstlaan
14.8 km 13.8°C 78.0% RH PM2.5: 0.8 µg/m³ PM10: 2.5 µg/m³
7
Den Haag-Neherkade
16.0 km PM2.5: 1.6 µg/m³ PM10: 7.0 µg/m³
21
Rebecquestraat, Den Haag
16.6 km PM2.5: 5.0 µg/m³
1
netherlands-hof-van-scheveningen
17.4 km PM2.5: 0.2 µg/m³ PM10: 0.2 µg/m³
38
Oude Meije, Zegveld
23.7 km PM2.5: 9.1 µg/m³
7
PNH Hoofddorp
24.1 km PM2.5: 1.7 µg/m³
30
Oost Sidelinge A13, Rotterdam
24.8 km PM2.5: 7.2 µg/m³
39
Schipholweg, Haarlem
25.7 km PM2.5: 9.4 µg/m³

What cities are near Leiden?

30 Merenwijk 29 Leiderdorp 22 Oegstgeest 20 Voorschoten 18 Wassenaar 11 Sassenheim 15 Katwijk aan Zee 10 Noordwijk-Binnen 20 Benthuizen 20 Zoetermeer
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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 2026-06-09T05:11 UTC.