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
1.9 µg/m³
WHO guideline 15
PM10
1.9 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
12:00 PM
💨
PM2.5 1.9 µg/m³
50Good
1:00 PM
💨
PM2.5 2.2 µg/m³
53Moderate
2:00 PM
💨
PM2.5 2.6 µg/m³
56Moderate
3:00 PM
💨
PM2.5 2.8 µg/m³
61Moderate
4:00 PM
💨
PM2.5 3.1 µg/m³
65Moderate
5:00 PM
💨
PM2.5 3.3 µg/m³
61Moderate
6:00 PM
💨
PM2.5 3.5 µg/m³
50Good
7:00 PM
💨
PM2.5 3.8 µg/m³
43Good
8:00 PM
💨
PM2.5 4.4 µg/m³
38Good
9:00 PM
💨
PM2.5 5.1 µg/m³
35Good
10:00 PM
💨
PM2.5 5.6 µg/m³
34Good
11:00 PM
💨
PM2.5 6 µg/m³
33Good
Next few days
daily max · US EPA AQI
Wed
💨
Moderate · UV High
65
Sat
💨
Good · UV Moderate
43
Sun
💨
Good · UV Moderate
34