Air quality in Norwalk
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
19.4 µg/m³
WHO guideline 15
PM10
19.9 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
6:00 AM
💨
PM2.5 19.4 µg/m³
66Moderate
7:00 AM
💨
PM2.5 18.6 µg/m³
65Moderate
8:00 AM
💨
PM2.5 17.5 µg/m³
62Moderate
9:00 AM
💨
PM2.5 17 µg/m³
61Moderate
10:00 AM
💨
PM2.5 15.5 µg/m³
58Moderate
11:00 AM
💨
PM2.5 13.2 µg/m³
53Moderate
12:00 PM
💨
PM2.5 11.1 µg/m³
46Good
1:00 PM
💨
PM2.5 10.2 µg/m³
43Good
2:00 PM
💨
PM2.5 10.5 µg/m³
44Good
3:00 PM
💨
PM2.5 11.1 µg/m³
47Good
4:00 PM
💨
PM2.5 10.5 µg/m³
51Moderate
5:00 PM
💨
PM2.5 10 µg/m³
56Moderate
Next few days
daily max · US EPA AQI
Sat
💨
Moderate · UV Low
80
Sun
💨
Moderate · UV High
96
Tue
💨
Good · UV Moderate
42