Air quality in Romeoville
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
11 µg/m³
WHO guideline 15
PM10
11.3 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
4:00 PM
💨
PM2.5 11 µg/m³
86Moderate
5:00 PM
💨
PM2.5 10.1 µg/m³
68Moderate
6:00 PM
💨
PM2.5 9.5 µg/m³
48Good
7:00 PM
💨
PM2.5 10.9 µg/m³
45Good
8:00 PM
💨
PM2.5 13.5 µg/m³
54Moderate
9:00 PM
💨
PM2.5 13.3 µg/m³
54Moderate
10:00 PM
💨
PM2.5 12.2 µg/m³
51Moderate
11:00 PM
💨
PM2.5 11.1 µg/m³
46Good
12:00 AM
💨
PM2.5 10 µg/m³
42Good
1:00 AM
💨
PM2.5 8.4 µg/m³
35Good
2:00 AM
💨
PM2.5 7 µg/m³
29Good
3:00 AM
💨
PM2.5 6 µg/m³
25Good
Next few days
daily max · US EPA AQI
Tue
💨
Moderate · UV High
91
Wed
💨
Moderate · UV High
83
Thu
💨
Moderate · UV High
51
Fri
💨
Moderate · UV High
82