Air quality in Darien
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
16.9 µg/m³
WHO guideline 15
PM10
16.9 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
1:00 AM
💨
PM2.5 16.9 µg/m³
61Moderate
2:00 AM
💨
PM2.5 12.6 µg/m³
52Moderate
3:00 AM
💨
PM2.5 10.5 µg/m³
44Good
4:00 AM
💨
PM2.5 8.7 µg/m³
36Good
5:00 AM
💨
PM2.5 7.7 µg/m³
32Good
6:00 AM
💨
PM2.5 6.8 µg/m³
28Good
7:00 AM
💨
PM2.5 6.3 µg/m³
26Good
8:00 AM
💨
PM2.5 6.8 µg/m³
28Good
9:00 AM
💨
PM2.5 7.3 µg/m³
30Good
10:00 AM
💨
PM2.5 7.2 µg/m³
30Good
11:00 AM
💨
PM2.5 6.4 µg/m³
32Good
12:00 PM
💨
PM2.5 5.5 µg/m³
41Good
Next few days
daily max · US EPA AQI
Tue
💨
Moderate · UV High
66
Wed
💨
Moderate · UV Moderate
93
Thu
💨
Unhealthy for Sensitive Groups · UV High
120
Fri
💨
Unhealthy for Sensitive Groups · UV High
111
Sat
💨
Moderate · UV High
55