Air Quality in Cardiff, United Kingdom

Overcast
7.5°C · 93.8% humidity
7.5°
Feels 3.4°
32
Good
Air quality is satisfactory. Enjoy outdoor activities.
6 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
13 12am
15
15
32 3am
27
23
20 6am
18
17
16 9am
15
14
14 12pm
14
15
15 3pm
15
15
15 6pm
15
15
15 9pm
15
15
Station readings 4h ago
AQI 15
PM2.5 3.6 µg/m³ · 4h ago
CAMS model adj -12
25
27
27
25
25
25
25
25
25
25
25
25
25
25
27
27
27
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▲
32
7.72 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Cardiff?

Temperature & Precipitation

PM2.5 Trend

18h · 1 station
PM2.57.72 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (6 stations within 25 km)
7.72
Median
7.42
Average
3.8
Low
11.5
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -1.8

What is the 7-day forecast for Cardiff?

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
06-15
17.9° 11.8°
0.75 mm
Both models agree Avg diff: 3.3°C

Where are air quality stations near Cardiff?

2
Cardiff Centre, United Kingdom
0.3 km PM2.5: 0.5 µg/m³
123
Cardiff Newport Road, United Kingdom
2.3 km PM2.5: 44.4 µg/m³
68
Cardiff Newport Road, United Kingdom
2.3 km PM2.5: 20.2 µg/m³
21
Caerphilly White Street, United Kingdom
10.8 km PM2.5: 5.0 µg/m³
42
Caerphilly White Street, United Kingdom
10.8 km PM2.5: 10.1 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?

31 Penarth 30 Caerphilly 31 Barry 31 Risca 32 Newport 30 Pontypridd 30 Weston-super-Mare 31 Blackwood 31 Gelligaer 32 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 2026-06-09T02:53 UTC.