Air Quality in Castellar del Vallès, Spain

Partly Cloudy
23.6°C · 53.1% humidity
23.6°
Feels 23.6°
51
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
18 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
73 5am
68
72
51 8am
54
57
59 11am
60
61
61 2pm
62
62
62 5pm
63
63
63 8pm
63
63
63 11pm
75
75
75 2am
75
75
Station readings
73
68
72
38
CAMS model adj +9
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
66
66
66
66
66
AD 728×90

Air Quality Index Trend

48h · 1 stn

Castellar del Vallès'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.

53.1%
Humidity
9.6 km/h
Wind E
1013.1 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
51
12.16 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Castellar del Vallès?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.512.16 µg/m³ ✓ WHO
Moderate
PM1027.4 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (18 stations within 25 km)
12.16
Median
13.12
Average
5.0
Low
29.7
High
PM2.5 µg/m³ · Model: 10.85 · Bias: -1.3

What is the 7-day forecast for Castellar del Vallès?

07-22
30.5° 23.6°
07-23
29.6° 23.0°
07-24
28.5° 20.5°
0.75 mm
07-25
36.1° 16.9°
0.25 mm
07-26
34.5° 21.7°
07-27
37.2° 21.2°
07-28
38.2° 20.0°
Both models agree Avg diff: 2.0°C

Where are air quality stations near Castellar del Vallès?

29
Sabadell (Av.Gran Via), Catalunya, Spain
6.4 km PM2.5: 7.0 µg/m³
13
Terrassa, Catalunya, Spain
9.2 km PM2.5: 3.1 µg/m³
33
Terrassa, Catalunya, Spain
9.2 km PM2.5: 7.9 µg/m³
29
Santa Perpètua de Mogoda, Catalunya, Spain
13.0 km PM2.5: 7.0 µg/m³
23
Mollet, Catalunya, Spain
13.1 km PM2.5: 5.5 µg/m³
17
Mollet, Catalunya, Spain
13.1 km PM2.5: 4.1 µg/m³
–
Can Barri
13.2 km
4
Rubí (Ca n'Oriol), Catalunya, Spain
14.3 km PM2.5: 1.0 µg/m³
22
Rubí (Ca n'Oriol), Catalunya, Spain
14.3 km PM2.5: 5.3 µg/m³
1
spain-cerdanyola-del-vallès-carrer-del-torrent
14.4 km 28.0°C 34.0% RH PM2.5: 0.2 µg/m³ PM10: 1.3 µg/m³

What cities are near Castellar del Vallès?

56 Caldes de Montbui 50 Terrassa 44 Sabadell 44 Sant Quirze del Vallès 45 Barberà del Vallès 32 Santa Perpètua de Mogoda 43 Parets del Vallès 26 Mollet del Vallès 36 Rubí 53 Ripollet
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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 2026-07-22T06:44 UTC.