Air quality in Piedmont
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
12.5 µg/m³
WHO guideline 15
PM10
12.9 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
12:00 AM
💨
PM2.5 12.5 µg/m³
52Moderate
1:00 AM
💨
PM2.5 13.1 µg/m³
53Moderate
2:00 AM
💨
PM2.5 14.2 µg/m³
55Moderate
3:00 AM
💨
PM2.5 15.3 µg/m³
58Moderate
4:00 AM
💨
PM2.5 15.9 µg/m³
59Moderate
5:00 AM
💨
PM2.5 16.2 µg/m³
60Moderate
6:00 AM
💨
PM2.5 16.6 µg/m³
60Moderate
7:00 AM
💨
PM2.5 17 µg/m³
61Moderate
8:00 AM
💨
PM2.5 16.1 µg/m³
59Moderate
9:00 AM
💨
PM2.5 14.4 µg/m³
56Moderate
10:00 AM
💨
PM2.5 13.4 µg/m³
55Moderate
11:00 AM
💨
PM2.5 12.6 µg/m³
71Moderate
Next few days
daily max · US EPA AQI
Thu
💨
Moderate · UV Very high
68
Fri
💨
Moderate · UV Very high
85
Sat
💨
Moderate · UV High
96
Sun
💨
Unhealthy for Sensitive Groups · UV Very high
103
Mon
💨
Moderate · UV Very high
75