Air quality in Portsmouth
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.
PM10
5.5 µg/m³
WHO limit 45
Hourly (12h)
EAQI
20:00
💨
PM2.5 3 µg/m³
22Fair
21:00
💨
PM2.5 3.6 µg/m³
21Fair
22:00
💨
PM2.5 3.7 µg/m³
24Fair
23:00
💨
PM2.5 4 µg/m³
24Fair
00:00
💨
PM2.5 4 µg/m³
23Fair
01:00
💨
PM2.5 3.8 µg/m³
20Good
02:00
💨
PM2.5 3.2 µg/m³
18Good
03:00
💨
PM2.5 3 µg/m³
18Good
04:00
💨
PM2.5 3 µg/m³
18Good
05:00
💨
PM2.5 3.1 µg/m³
18Good
06:00
💨
PM2.5 3.4 µg/m³
18Good
07:00
💨
PM2.5 3.3 µg/m³
18Good
Forecast — next days
Max index per day