Air quality in Caldwell
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
6.4 µg/m³
WHO guideline 15
PM10
6.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
9:00 AM
💨
PM2.5 6.4 µg/m³
36Good
10:00 AM
💨
PM2.5 6.8 µg/m³
43Good
11:00 AM
💨
PM2.5 6.7 µg/m³
49Good
12:00 PM
💨
PM2.5 6 µg/m³
53Moderate
1:00 PM
💨
PM2.5 6.2 µg/m³
56Moderate
2:00 PM
💨
PM2.5 6.2 µg/m³
58Moderate
3:00 PM
💨
PM2.5 6 µg/m³
61Moderate
4:00 PM
💨
PM2.5 6.2 µg/m³
61Moderate
5:00 PM
💨
PM2.5 6.4 µg/m³
55Moderate
6:00 PM
💨
PM2.5 7.6 µg/m³
46Good
7:00 PM
💨
PM2.5 8.9 µg/m³
38Good
8:00 PM
💨
PM2.5 11.9 µg/m³
50Good
Next few days
daily max · US EPA AQI
Fri
💨
Moderate · UV High
61
Sat
💨
Moderate · UV Low
66
Sun
💨
Moderate · UV High
61