Air quality in Northbrook
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
4.4 µg/m³
WHO guideline 15
PM10
4.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
1:00 PM
💨
PM2.5 4.4 µg/m³
49Good
2:00 PM
💨
PM2.5 4.7 µg/m³
58Moderate
3:00 PM
💨
PM2.5 4.8 µg/m³
65Moderate
4:00 PM
💨
PM2.5 4.9 µg/m³
66Moderate
5:00 PM
💨
PM2.5 4.9 µg/m³
61Moderate
6:00 PM
💨
PM2.5 4.8 µg/m³
48Good
7:00 PM
💨
PM2.5 5.3 µg/m³
44Good
8:00 PM
💨
PM2.5 9.1 µg/m³
38Good
9:00 PM
💨
PM2.5 14.5 µg/m³
56Moderate
10:00 PM
💨
PM2.5 19.1 µg/m³
66Moderate
11:00 PM
💨
PM2.5 22.8 µg/m³
74Moderate
12:00 AM
💨
PM2.5 25.6 µg/m³
79Moderate
Next few days
daily max · US EPA AQI
Tue
💨
Moderate · UV Very high
74
Wed
💨
Unhealthy for Sensitive Groups · UV Moderate
108
Thu
💨
Moderate · UV High
76
Fri
💨
Moderate · UV High
76
Sat
💨
Moderate · UV High
67