Air Quality in Cardiff, United Kingdom

Windy
18.3°C · 70.8% humidity
18.3°
Feels 18.3°
43
Good
Air quality is satisfactory. Enjoy outdoor activities.
6 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
53 3pm
53
53
43 6pm
46
48
49 9pm
50
51
52 12am
52
52
53 3am
53
53
53 6am
53
53
53 9am
53
53
60 12pm
60
53
Station readings 26h ago
AQI 52
PM2.5 12.6 µg/m³ · 26h ago
CAMS model adj +26
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
34
34
27
AD 728×90

Air Quality Index Trend

4h · 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.

70.8%
Humidity
71.9 km/h
Wind ENE
1022.9 hPa
Pressure
6.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
43
10.36 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Cardiff?

Temperature & Precipitation

PM2.5 Trend

4h · 1 station
PM2.510.36 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX6.9
High
AD 300×250
Station readings (6 stations within 25 km)
10.36
Median
9.17
Average
3.8
Low
11.0
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -4.1

What is the 7-day forecast for Cardiff?

05-29
18.3° 12.3°
3.5 mm
05-30
19.5° 12.9°
2.44 mm
05-31
18.1° 11.8°
0.81 mm
06-01
18.7° 11.5°
0.44 mm
06-02
16.6° 10.8°
14.0 mm
06-03
18.0° 12.0°
0.5 mm
06-04
22.2° 8.4°
5.69 mm
Both models agree Avg diff: 2.7°C

Where are air quality stations near Cardiff?

52
Cardiff Centre, United Kingdom
0.3 km PM2.5: 12.6 µg/m³
156
Cardiff Newport Road, United Kingdom
2.3 km PM2.5: 65.2 µg/m³
20
Cardiff Newport Road, United Kingdom
2.3 km PM2.5: 4.8 µg/m³
13
Caerphilly White Street, United Kingdom
10.8 km PM2.5: 3.1 µg/m³
51
Caerphilly White Street, United Kingdom
10.8 km PM2.5: 12.1 µg/m³
–
Nantgarw Road
11.2 km
–
Caerphilly Islwyn Road Wattsville
15.3 km
–
Rhondda Pontypridd Gelliwastad Rd
17.8 km
17
Newport, United Kingdom
19.4 km PM2.5: 4.1 µg/m³
–
Hafod-yr-ynys Hill Roadside
22.5 km

What cities are near Cardiff?

42 Penarth 16 Caerphilly 41 Barry 33 Risca 38 Newport 31 Pontypridd 42 Weston-super-Mare 31 Blackwood 31 Gelligaer 36 Cwmbran
Get AQI alerts for Cardiff

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T17:00 UTC.