Air quality in Fort Collins
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
4.9 µg/m³
WHO guideline 15
PM10
5.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
8:00 AM
💨
PM2.5 4.9 µg/m³
36Good
9:00 AM
💨
PM2.5 4.2 µg/m³
43Good
10:00 AM
💨
PM2.5 4 µg/m³
49Good
11:00 AM
💨
PM2.5 3.6 µg/m³
65Moderate
12:00 PM
💨
PM2.5 3.1 µg/m³
76Moderate
1:00 PM
💨
PM2.5 2.6 µg/m³
73Moderate
2:00 PM
💨
PM2.5 2.9 µg/m³
61Moderate
3:00 PM
💨
PM2.5 3.3 µg/m³
53Moderate
4:00 PM
💨
PM2.5 3.5 µg/m³
56Moderate
5:00 PM
💨
PM2.5 3.8 µg/m³
63Moderate
6:00 PM
💨
PM2.5 4 µg/m³
61Moderate
7:00 PM
💨
PM2.5 5.3 µg/m³
50Good
Next few days
daily max · US EPA AQI
Tue
💨
Moderate · UV Very high
76
Wed
💨
Moderate · UV Very high
95
Thu
💨
Moderate · UV Very high
100
Fri
💨
Moderate · UV Very high
95