Air quality in Williston
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
8.9 µg/m³
WHO guideline 15
PM10
9 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
12:00 AM
💨
PM2.5 8.9 µg/m³
37Good
1:00 AM
💨
PM2.5 8.7 µg/m³
36Good
2:00 AM
💨
PM2.5 11.2 µg/m³
47Good
3:00 AM
💨
PM2.5 11.9 µg/m³
50Good
4:00 AM
💨
PM2.5 13.8 µg/m³
55Moderate
5:00 AM
💨
PM2.5 14.1 µg/m³
55Moderate
6:00 AM
💨
PM2.5 13.7 µg/m³
54Moderate
7:00 AM
💨
PM2.5 10.9 µg/m³
45Good
8:00 AM
💨
PM2.5 7.7 µg/m³
32Good
9:00 AM
💨
PM2.5 9.5 µg/m³
40Good
10:00 AM
💨
PM2.5 7.7 µg/m³
39Good
11:00 AM
💨
PM2.5 7 µg/m³
44Good
Next few days
daily max · US EPA AQI
Wed
💨
Moderate · UV High
81
Thu
💨
Moderate · UV High
55
Sat
💨
Moderate · UV Moderate
76
Sun
💨
Moderate · UV High
51