Air quality in Smithfield
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
10.5 µg/m³
WHO guideline 15
PM10
13.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
1:00 PM
💨
PM2.5 10.5 µg/m³
63Moderate
2:00 PM
💨
PM2.5 10.2 µg/m³
58Moderate
3:00 PM
💨
PM2.5 9.7 µg/m³
53Moderate
4:00 PM
💨
PM2.5 9.5 µg/m³
48Good
5:00 PM
💨
PM2.5 9.7 µg/m³
48Good
6:00 PM
💨
PM2.5 10.4 µg/m³
46Good
7:00 PM
💨
PM2.5 10.8 µg/m³
45Good
8:00 PM
💨
PM2.5 8.8 µg/m³
41Good
9:00 PM
💨
PM2.5 8.3 µg/m³
40Good
10:00 PM
💨
PM2.5 8.2 µg/m³
40Good
11:00 PM
💨
PM2.5 8.3 µg/m³
39Good
12:00 AM
💨
PM2.5 7.9 µg/m³
39Good
Next few days
daily max · US EPA AQI
Thu
💨
Moderate · UV High
68
Fri
💨
Moderate · UV High
68
Sat
💨
Moderate · UV Moderate
63
Sun
💨
Moderate · UV High
91
Mon
💨
Moderate · UV High
57