Air quality in Charter Oak
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.
US AQI · EPA
115
Unhealthy for Sensitive Groups
PM2.5
25 µg/m³
WHO guideline 15
PM10
29.2 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
5:00 PM
💨
PM2.5 25 µg/m³
115Unhealthy for Sensitive Groups
6:00 PM
💨
PM2.5 25 µg/m³
96Moderate
7:00 PM
💨
PM2.5 24.9 µg/m³
78Moderate
8:00 PM
💨
PM2.5 24.5 µg/m³
77Moderate
9:00 PM
💨
PM2.5 24.2 µg/m³
76Moderate
10:00 PM
💨
PM2.5 24 µg/m³
76Moderate
11:00 PM
💨
PM2.5 24 µg/m³
76Moderate
12:00 AM
💨
PM2.5 24.2 µg/m³
76Moderate
1:00 AM
💨
PM2.5 24.7 µg/m³
77Moderate
2:00 AM
💨
PM2.5 25 µg/m³
78Moderate
3:00 AM
💨
PM2.5 25 µg/m³
78Moderate
4:00 AM
💨
PM2.5 25.7 µg/m³
80Moderate
Next few days
daily max · US EPA AQI
Sat
💨
Unhealthy for Sensitive Groups · UV Very high
117
Sun
💨
Unhealthy for Sensitive Groups · UV Very high
147
Mon
💨
Unhealthy for Sensitive Groups · UV Very high
108
Tue
💨
Moderate · UV Very high
90
Wed
💨
Moderate · UV Very high
68