Today's Weather Forecast - Cardiff
Today's weather in Cardiff. high 20°C (68°F), low 15°C (59°F). Mainly Clear.
Today’s Hourly Weather Outlook
- Wind speed
- 12 km/h
- Rain probability
- 0%
- Wind speed
- 15 km/h
- Rain probability
- 53%
- Wind speed
- 13 km/h
- Rain probability
- 18%
- Wind speed
- 13 km/h
- Rain probability
- 82%
24-Hour Rain & Temperature Forecast
Sunrise & Sunset
Air Quality Index & Health Advice
Air Quality Index
- Air quality level
- Good
- Dominant pollutant
- Dominant: O3
- Monitoring station
- Cardiff Centre, United Kingdom
- PM2.5
- 21μg/m³
- PM10
- 6μg/m³
- O₃
- 23.9ppb
- NO₂
- 3.5ppb
- SO₂
- 0.3ppb
- CO
- 1.4ppm
5-Day Weather Forecast
Full 15-Day ForecastWeather Insight
Cardiff is forecast to reach a high of 20°C today, with an overnight low around 15°C. That's 2° above the long-term average high of 18°C for this time of year. It continues a recent pattern — 23 of the last 28 days with published data have run warmer than normal. Expect a high chance of rain (82% probability) and a gentle breeze averaging 15 km/h. Air quality is currently good (AQI 25), with no notable outdoor health concerns.
Today vs Normal
The long-term average high for today is 18°C.
23 of the last 28 days with published data ran above normal.
It continues that pattern - today's forecast is also running above normal.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.