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
9.8 µg/m³
WHO guideline 15
PM10
10.3 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
7:00 PM
💨
PM2.5 9.8 µg/m³
44Good
8:00 PM
💨
PM2.5 11.4 µg/m³
48Good
9:00 PM
💨
PM2.5 12.6 µg/m³
52Moderate
10:00 PM
💨
PM2.5 12.1 µg/m³
51Moderate
11:00 PM
💨
PM2.5 11.7 µg/m³
49Good
12:00 AM
💨
PM2.5 11.7 µg/m³
49Good
1:00 AM
💨
PM2.5 11.8 µg/m³
49Good
2:00 AM
💨
PM2.5 11.4 µg/m³
48Good
3:00 AM
💨
PM2.5 11.4 µg/m³
48Good
4:00 AM
💨
PM2.5 12.3 µg/m³
51Moderate
5:00 AM
💨
PM2.5 13.7 µg/m³
54Moderate
6:00 AM
💨
PM2.5 15.5 µg/m³
58Moderate
Next few days
daily max · US EPA AQI
Sun
💨
Moderate · UV High
95
Mon
💨
Unhealthy for Sensitive Groups · UV Moderate
104
Tue
💨
Unhealthy for Sensitive Groups · UV High
133
Wed
💨
Moderate · UV Moderate
100
Thu
💨
Moderate · UV Moderate
84