Air Quality in Cardiff, United Kingdom

Partly Cloudy
15.6°C · 53.0% humidity
15.6°
Feels 15.6°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
5 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
30 1pm
27
19
30 4pm
32
33
34 7pm
54
55
55 10pm
55
56
36 1am
56
56
56 4am
36
36
36 7am
36
36
36 10am
36
36
Station readings
30
27
19
CAMS model adj +2
27
27
27
34
34
34
34
54
54
54
54
54
34
54
54
54
34
34
34
34
34
34
34
34
AD 728×90

Air Quality Index Trend

46h · 2 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.

53.0%
Humidity
9.4 km/h
Wind W
1029.0 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
30
7.19 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Cardiff?

Temperature & Precipitation

PM2.5 Trend

46h · 2 stations
PM2.57.19 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (5 stations within 25 km)
7.19
Median
7.02
Average
4.6
Low
10.1
High
PM2.5 µg/m³ · Model: 7.1 · Bias: -0.1

What is the 7-day forecast for Cardiff?

09-05
15.6° 10.1°
0.38 mm
09-06
20.1° 12.4°
0.13 mm
09-07
15.0° 11.6°
12.31 mm
09-08
22.4° 7.8°
09-09
19.0° 8.9°
0.81 mm
09-10
19.4° 12.7°
0.81 mm
09-11
16.0° 11.6°
0.25 mm
Both models agree Avg diff: 3.5°C

Where are air quality stations near Cardiff?

30
Cardiff Centre, United Kingdom
0.3 km PM2.5: 7.2 µg/m³
30
Cardiff Centre, United Kingdom
0.3 km PM2.5: 7.2 µg/m³
30
Cardiff Newport Road, United Kingdom
2.3 km PM2.5: 7.2 µg/m³
27
Cardiff Newport Road, United Kingdom
2.3 km PM2.5: 6.5 µg/m³
19
Caerphilly White Street, United Kingdom
10.8 km PM2.5: 4.6 µg/m³
–
Nantgarw Road
11.2 km
–
Rhondda Pontypridd Gelliwastad Rd
17.8 km
20
Rhondda Glyncoch Garth Avenue, United Kingdom
18.8 km PM2.5: 4.8 µg/m³
19
Rhondda Glyncoch Garth Avenue, United Kingdom
18.8 km PM2.5: 4.6 µg/m³
21
Rhondda Glyncoch Garth Avenue, United Kingdom
18.8 km PM2.5: 5.0 µg/m³

What cities are near Cardiff?

29 Penarth 28 Caerphilly 28 Barry 32 Risca 41 Newport 20 Pontypridd 28 Weston-super-Mare 27 Blackwood 24 Gelligaer 36 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 2026-09-05T15:05 UTC.