Air quality in Greybull
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
4.5 µg/m³
WHO guideline 15
PM10
7.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
11:00 AM
💨
PM2.5 4.5 µg/m³
48Good
12:00 PM
💨
PM2.5 4.1 µg/m³
58Moderate
1:00 PM
💨
PM2.5 3.6 µg/m³
66Moderate
2:00 PM
💨
PM2.5 3.4 µg/m³
68Moderate
3:00 PM
💨
PM2.5 3.2 µg/m³
70Moderate
4:00 PM
💨
PM2.5 3.1 µg/m³
70Moderate
5:00 PM
💨
PM2.5 3 µg/m³
68Moderate
6:00 PM
💨
PM2.5 2.9 µg/m³
63Moderate
7:00 PM
💨
PM2.5 2.8 µg/m³
51Moderate
8:00 PM
💨
PM2.5 2.8 µg/m³
47Good
9:00 PM
💨
PM2.5 2.8 µg/m³
42Good
10:00 PM
💨
PM2.5 2.8 µg/m³
36Good
Next few days
daily max · US EPA AQI
Mon
💨
Moderate · UV High
70
Tue
💨
Moderate · UV High
51
Wed
💨
Moderate · UV High
73
Thu
💨
Moderate · UV High
78
Fri
💨
Good · UV Very high
43