Air quality in Guilford
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
5.7 µg/m³
WHO guideline 15
PM10
6.6 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
5:00 AM
💨
PM2.5 5.7 µg/m³
35Good
6:00 AM
💨
PM2.5 5.7 µg/m³
32Good
7:00 AM
💨
PM2.5 5.7 µg/m³
28Good
8:00 AM
💨
PM2.5 5.7 µg/m³
28Good
9:00 AM
💨
PM2.5 6.3 µg/m³
35Good
10:00 AM
💨
PM2.5 6.7 µg/m³
45Good
11:00 AM
💨
PM2.5 6.7 µg/m³
56Moderate
12:00 PM
💨
PM2.5 6 µg/m³
68Moderate
1:00 PM
💨
PM2.5 5.6 µg/m³
73Moderate
2:00 PM
💨
PM2.5 5.6 µg/m³
75Moderate
3:00 PM
💨
PM2.5 5.8 µg/m³
78Moderate
4:00 PM
💨
PM2.5 6 µg/m³
78Moderate
Next few days
daily max · US EPA AQI
Thu
💨
Moderate · UV Moderate
78
Fri
💨
Moderate · UV High
68
Sat
💨
Moderate · UV High
75
Sun
💨
Unhealthy for Sensitive Groups · UV High
108
Mon
💨
Moderate · UV High
70