Air quality in Keystone
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
12.8 µg/m³
WHO guideline 15
PM10
15.9 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
4:00 AM
💨
PM2.5 12.8 µg/m³
52Moderate
5:00 AM
💨
PM2.5 12.4 µg/m³
52Moderate
6:00 AM
💨
PM2.5 12.4 µg/m³
52Moderate
7:00 AM
💨
PM2.5 12.7 µg/m³
52Moderate
8:00 AM
💨
PM2.5 13.4 µg/m³
54Moderate
9:00 AM
💨
PM2.5 14.2 µg/m³
55Moderate
10:00 AM
💨
PM2.5 15.2 µg/m³
58Moderate
11:00 AM
💨
PM2.5 16.4 µg/m³
60Moderate
12:00 PM
💨
PM2.5 17.9 µg/m³
63Moderate
1:00 PM
💨
PM2.5 18.5 µg/m³
64Moderate
2:00 PM
💨
PM2.5 18 µg/m³
63Moderate
3:00 PM
💨
PM2.5 16.5 µg/m³
60Moderate
Next few days
daily max · US EPA AQI
Fri
💨
Moderate · UV Very high
64
Sat
💨
Moderate · UV Very high
76
Sun
💨
Moderate · UV Very high
78
Mon
💨
Good · UV Very high
47
Tue
💨
Good · UV Very high
41