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
10.4 µg/m³
WHO guideline 15
PM10
10.4 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
9:00 PM
💨
PM2.5 10.4 µg/m³
43Good
10:00 PM
💨
PM2.5 13.3 µg/m³
54Moderate
11:00 PM
💨
PM2.5 15.4 µg/m³
58Moderate
12:00 AM
💨
PM2.5 16.4 µg/m³
60Moderate
1:00 AM
💨
PM2.5 16.4 µg/m³
60Moderate
2:00 AM
💨
PM2.5 15.4 µg/m³
58Moderate
3:00 AM
💨
PM2.5 13.4 µg/m³
54Moderate
4:00 AM
💨
PM2.5 11.4 µg/m³
48Good
5:00 AM
💨
PM2.5 9.8 µg/m³
41Good
6:00 AM
💨
PM2.5 9.2 µg/m³
38Good
7:00 AM
💨
PM2.5 9.7 µg/m³
40Good
8:00 AM
💨
PM2.5 10.1 µg/m³
42Good
Next few days
daily max · US EPA AQI
Tue
💨
Moderate · UV High
72
Wed
💨
Moderate · UV High
83
Thu
💨
Moderate · UV High
73
Fri
💨
Moderate · UV High
75
Sat
💨
Moderate · UV Very high
62