What is the air quality in Cardiff today?

The current Air Quality Index (AQI) in Cardiff is 32 (Good). PM2.5 concentration is 7.64 µg/m³.

What is the temperature in Cardiff right now?

The current temperature in Cardiff is 13.6°C (feels like 13.6°C). Humidity is 55.4% and wind speed is 20.8 km/h.

Is it safe to go outside in Cardiff?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Cardiff, United Kingdom

Partly Cloudy

13.6°C · 55.4% humidity

13.6°

Feels 13.6°

Good

Air quality is satisfactory. Enjoy outdoor activities.

10 stations

Nearby Monitoring Stations

AQI Forecast

6 12pm

32 3pm

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Station readings

Air Quality Index Trend

29h · 2 stn

View full history →

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.

55.4%

Humidity

20.8 km/h

Wind NNW

1020.2 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

7.64 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Cardiff?

Temperature & Precipitation

PM2.5 Trend

29h · 2 stations

PM2.57.64 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (10 stations within 25 km)

7.64

Median

4.38

Average

1.4

Low

8.2

High

PM2.5 µg/m³ · Model: 5.8 · Bias: -1.8

What is the 7-day forecast for Cardiff?

10-21

13.6° 4.8°

10-22

16.4° 8.4°

0.56 mm

10-23

12.4° 7.8°

2.87 mm

10-24

13.1° 8.0°

10-25

13.4° 7.1°

12.87 mm

10-26

10.4° 7.3°

2.31 mm

10-27

16.0° 4.4°

11.69 mm

Both models agree Avg diff: 3.7°C

Where are air quality stations near Cardiff?

Cardiff Centre, United Kingdom

0.3 km PM2.5: 8.2 µg/m³

Cardiff Centre, United Kingdom

0.3 km PM2.5: 7.2 µg/m³

Cardiff Newport Road, United Kingdom

2.3 km PM2.5: 1.4 µg/m³

Cardiff Newport Road, United Kingdom

2.3 km PM2.5: 8.2 µg/m³

Caerphilly White Street, United Kingdom

10.8 km PM2.5: 3.6 µg/m³

Caerphilly Islwyn Road Wattsville

15.3 km

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Rhondda Pontypridd Gelliwastad Rd

17.8 km

Rhondda Glyncoch Garth Avenue, United Kingdom

18.8 km PM2.5: 4.1 µg/m³

Rhondda Glyncoch Garth Avenue, United Kingdom

18.8 km PM2.5: 1.7 µg/m³

What cities are near Cardiff?

26 Penarth 15 Caerphilly 24 Barry 17 Risca 12 Newport 13 Pontypridd 26 Weston-super-Mare 15 Blackwood 15 Gelligaer 14 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 2026-10-21T14:04 UTC.