Air Quality in Cardiff, United Kingdom

Overcast
7.5°C · 93.8% humidity
7.5°
Feels 3.4°
40
Good
Air quality is satisfactory. Enjoy outdoor activities.
8 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
12 9pm
12
12
40 12am
34
28
22 3am
19
17
16 6am
15
14
13 9am
13
13
13 12pm
12
14
14 3pm
14
14
14 6pm
14
14
Station readings
16
15
CAMS model adj -13
25
25
25
25
27
27
25
25
25
25
25
25
25
25
25
25
25
27
27
27
27
27
27
27
AD 728×90

Air Quality Index Trend

18h · 1 stn

Cardiff'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.

93.8%
Humidity
30.2 km/h
Wind WNW
1021.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
40
9.59 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Cardiff?

Temperature & Precipitation

PM2.5 Trend

18h · 1 station
PM2.59.59 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (8 stations within 25 km)
9.59
Median
6.69
Average
3.6
Low
10.1
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -3.7

What is the 7-day forecast for Cardiff?

06-08
15.7° 9.4°
1.56 mm
06-09
18.2° 7.5°
0.62 mm
06-10
13.2° 11.3°
12.44 mm
06-11
23.1° 13.3°
1.31 mm
06-12
18.7° 9.6°
06-13
19.2° 10.4°
0.19 mm
06-14
20.9° 11.1°
0.25 mm
Both models agree Avg diff: 3.4°C

Where are air quality stations near Cardiff?

62
Cardiff Centre, United Kingdom
0.3 km PM2.5: 17.3 µg/m³
101
Cardiff Newport Road, United Kingdom
2.3 km PM2.5: 35.5 µg/m³
105
Cardiff Newport Road, United Kingdom
2.3 km PM2.5: 37.1 µg/m³
21
Caerphilly White Street, United Kingdom
10.8 km PM2.5: 5.0 µg/m³
28
Caerphilly White Street, United Kingdom
10.8 km PM2.5: 6.7 µg/m³
–
Nantgarw Road
11.2 km
–
Caerphilly Islwyn Road Wattsville
15.3 km
–
Rhondda Pontypridd Gelliwastad Rd
17.8 km
15
Newport, United Kingdom
19.4 km PM2.5: 3.6 µg/m³
–
Hafod-yr-ynys Hill Roadside
22.5 km

What cities are near Cardiff?

38 Penarth 15 Caerphilly 37 Barry 23 Risca 17 Newport 16 Pontypridd 40 Weston-super-Mare 22 Blackwood 21 Gelligaer 20 Cwmbran
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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 2026-06-08T23:11 UTC.