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
5.6 µg/m³
WHO guideline 15
PM10
5.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
7:00 AM
💨
PM2.5 5.6 µg/m³
23Good
8:00 AM
💨
PM2.5 6 µg/m³
25Good
9:00 AM
💨
PM2.5 7.4 µg/m³
33Good
10:00 AM
💨
PM2.5 9.7 µg/m³
46Good
11:00 AM
💨
PM2.5 10.7 µg/m³
68Moderate
12:00 PM
💨
PM2.5 10.7 µg/m³
83Moderate
1:00 PM
💨
PM2.5 10.8 µg/m³
86Moderate
2:00 PM
💨
PM2.5 10.5 µg/m³
88Moderate
3:00 PM
💨
PM2.5 10.3 µg/m³
88Moderate
4:00 PM
💨
PM2.5 10 µg/m³
85Moderate
5:00 PM
💨
PM2.5 9.9 µg/m³
80Moderate
6:00 PM
💨
PM2.5 9.8 µg/m³
70Moderate
Next few days
daily max · US EPA AQI
Sun
💨
Moderate · UV Very high
88
Mon
💨
Moderate · UV High
81
Tue
💨
Moderate · UV Very high
80
Wed
💨
Moderate · UV Very high
71