Air quality in Chester
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
7.7 µg/m³
WHO guideline 15
PM10
8.9 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
10:00 AM
💨
PM2.5 7.7 µg/m³
41Good
11:00 AM
💨
PM2.5 7.6 µg/m³
42Good
12:00 PM
💨
PM2.5 7.2 µg/m³
43Good
1:00 PM
💨
PM2.5 7 µg/m³
43Good
2:00 PM
💨
PM2.5 6.9 µg/m³
43Good
3:00 PM
💨
PM2.5 6.8 µg/m³
43Good
4:00 PM
💨
PM2.5 6.9 µg/m³
42Good
5:00 PM
💨
PM2.5 7.1 µg/m³
40Good
6:00 PM
💨
PM2.5 7.2 µg/m³
38Good
7:00 PM
💨
PM2.5 8 µg/m³
35Good
8:00 PM
💨
PM2.5 8.4 µg/m³
35Good
9:00 PM
💨
PM2.5 8.1 µg/m³
34Good
Next few days
daily max · US EPA AQI
Thu
💨
Good · UV Very high
43
Fri
💨
Good · UV Very high
49
Sat
💨
Moderate · UV High
61
Sun
💨
Moderate · UV High
95
Mon
💨
Good · UV Very high
44