Air quality in Westfield
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
14.3 µg/m³
WHO guideline 15
PM10
14.4 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
6:00 AM
💨
PM2.5 14.3 µg/m³
56Moderate
7:00 AM
💨
PM2.5 13.1 µg/m³
53Moderate
8:00 AM
💨
PM2.5 11.6 µg/m³
48Good
9:00 AM
💨
PM2.5 8.8 µg/m³
37Good
10:00 AM
💨
PM2.5 6.8 µg/m³
28Good
11:00 AM
💨
PM2.5 6.1 µg/m³
25Good
12:00 PM
💨
PM2.5 6 µg/m³
28Good
1:00 PM
💨
PM2.5 5.1 µg/m³
35Good
2:00 PM
💨
PM2.5 4.8 µg/m³
41Good
3:00 PM
💨
PM2.5 4.6 µg/m³
43Good
4:00 PM
💨
PM2.5 4.5 µg/m³
43Good
5:00 PM
💨
PM2.5 4.2 µg/m³
42Good
Next few days
daily max · US EPA AQI
Mon
💨
Moderate · UV Very high
61
Tue
💨
Moderate · UV Very high
64
Wed
💨
Moderate · UV High
100