Air quality in Cardiff
The UK Daily Air Quality Index (DAQI) is based on particulates (PM2.5/PM10), nitrogen dioxide (NO₂) and ozone (O₃). Bands: Low 1-3, Moderate 4-6, High 7-9, Very high 10.
PM2.5
2.6 µg/m³
WHO limit 15
PM10
4.9 µg/m³
WHO limit 45
Hourly (12h)
EAQI
22:00
💨
PM2.5 2.6 µg/m³
18Good
23:00
💨
PM2.5 2.7 µg/m³
18Good
00:00
💨
PM2.5 2.5 µg/m³
18Good
01:00
💨
PM2.5 2.4 µg/m³
18Good
02:00
💨
PM2.5 2 µg/m³
18Good
03:00
💨
PM2.5 2 µg/m³
19Good
04:00
💨
PM2.5 2.2 µg/m³
19Good
05:00
💨
PM2.5 2.3 µg/m³
18Good
06:00
💨
PM2.5 2 µg/m³
18Good
07:00
💨
PM2.5 2.2 µg/m³
17Good
08:00
💨
PM2.5 2.8 µg/m³
16Good
09:00
💨
PM2.5 2.7 µg/m³
16Good
Forecast — next days
Max index per day
Sun
💨
Fair · UV Moderate
24
Mon
💨
Fair · UV Moderate
23
Tue
💨
Fair · UV Moderate
31
Thu
💨
Fair · UV Moderate
29