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
6.9 µg/m³
WHO guideline 15
PM10
8.7 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
1:00 PM
💨
PM2.5 6.9 µg/m³
68Moderate
2:00 PM
💨
PM2.5 7.1 µg/m³
71Moderate
3:00 PM
💨
PM2.5 6.9 µg/m³
73Moderate
4:00 PM
💨
PM2.5 6.7 µg/m³
73Moderate
5:00 PM
💨
PM2.5 7.2 µg/m³
70Moderate
6:00 PM
💨
PM2.5 6.7 µg/m³
61Moderate
7:00 PM
💨
PM2.5 7.2 µg/m³
51Moderate
8:00 PM
💨
PM2.5 7.4 µg/m³
48Good
9:00 PM
💨
PM2.5 7.2 µg/m³
46Good
10:00 PM
💨
PM2.5 7.4 µg/m³
43Good
11:00 PM
💨
PM2.5 7.6 µg/m³
42Good
12:00 AM
💨
PM2.5 7.7 µg/m³
40Good
Next few days
daily max · US EPA AQI
Fri
💨
Moderate · UV High
73
Sun
💨
Moderate · UV Low
81