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
6.1 µg/m³
WHO guideline 15
PM10
6.2 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
3:00 AM
💨
PM2.5 6.1 µg/m³
46Good
4:00 AM
💨
PM2.5 5.6 µg/m³
47Good
5:00 AM
💨
PM2.5 5 µg/m³
47Good
6:00 AM
💨
PM2.5 4.2 µg/m³
47Good
7:00 AM
💨
PM2.5 3.7 µg/m³
46Good
8:00 AM
💨
PM2.5 2.8 µg/m³
45Good
9:00 AM
💨
PM2.5 2.8 µg/m³
45Good
10:00 AM
💨
PM2.5 2.6 µg/m³
45Good
11:00 AM
💨
PM2.5 2.3 µg/m³
45Good
12:00 PM
💨
PM2.5 2 µg/m³
47Good
1:00 PM
💨
PM2.5 1.4 µg/m³
49Good
2:00 PM
💨
PM2.5 1.7 µg/m³
50Good
Next few days
daily max · US EPA AQI
Sat
💨
Moderate · UV High
55
Sun
💨
Moderate · UV Very high
54
Mon
💨
Moderate · UV High
54
Tue
💨
Moderate · UV Very high
71
Wed
💨
Good · UV Very high
38