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
15.7 µg/m³
WHO guideline 15
PM10
16.1 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
10:00 PM
💨
PM2.5 15.7 µg/m³
59Moderate
11:00 PM
💨
PM2.5 14.5 µg/m³
56Moderate
12:00 AM
💨
PM2.5 12.2 µg/m³
51Moderate
1:00 AM
💨
PM2.5 9.9 µg/m³
41Good
2:00 AM
💨
PM2.5 8.2 µg/m³
34Good
3:00 AM
💨
PM2.5 6.9 µg/m³
29Good
4:00 AM
💨
PM2.5 6 µg/m³
27Good
5:00 AM
💨
PM2.5 6.1 µg/m³
29Good
6:00 AM
💨
PM2.5 7.2 µg/m³
32Good
7:00 AM
💨
PM2.5 5.5 µg/m³
34Good
8:00 AM
💨
PM2.5 6.2 µg/m³
35Good
9:00 AM
💨
PM2.5 6.5 µg/m³
36Good
Next few days
daily max · US EPA AQI
Wed
💨
Unhealthy for Sensitive Groups · UV High
108
Thu
💨
Unhealthy for Sensitive Groups · UV Moderate
131
Fri
💨
Moderate · UV Moderate
73
Sat
💨
Moderate · UV High
80
Sun
💨
Moderate · UV High
80