Air quality in Bristol
The US Air Quality Index (EPA) grades air from 0 to 500 using fine particles (PM2.5/PM10), ozone and nitrogen dioxide. 0-50 is Good, 51-100 Moderate, 101-150 Unhealthy for Sensitive Groups, and anything higher affects everyone.
PM2.5
12.6 µg/m³
WHO guideline 15
PM10
13.1 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
7:00 PM
💨
PM2.5 12.6 µg/m³
60Moderate
8:00 PM
💨
PM2.5 12.9 µg/m³
53Moderate
9:00 PM
💨
PM2.5 12.6 µg/m³
52Moderate
10:00 PM
💨
PM2.5 12 µg/m³
50Good
11:00 PM
💨
PM2.5 11.2 µg/m³
47Good
12:00 AM
💨
PM2.5 10.2 µg/m³
43Good
1:00 AM
💨
PM2.5 8.7 µg/m³
36Good
2:00 AM
💨
PM2.5 7.2 µg/m³
30Good
3:00 AM
💨
PM2.5 6.1 µg/m³
28Good
4:00 AM
💨
PM2.5 5.4 µg/m³
28Good
5:00 AM
💨
PM2.5 5 µg/m³
30Good
6:00 AM
💨
PM2.5 5.1 µg/m³
32Good
Next few days
daily max · US EPA AQI
Wed
💨
Unhealthy for Sensitive Groups · UV High
126
Thu
💨
Unhealthy for Sensitive Groups · UV Moderate
110
Fri
💨
Moderate · UV Moderate
93
Sat
💨
Unhealthy for Sensitive Groups · UV High
131
Sun
💨
Moderate · UV High
51