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
9.6 µg/m³
WHO guideline 15
PM10
10 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
8:00 AM
💨
PM2.5 9.6 µg/m³
40Good
9:00 AM
💨
PM2.5 9.7 µg/m³
40Good
10:00 AM
💨
PM2.5 10.7 µg/m³
48Good
11:00 AM
💨
PM2.5 11.7 µg/m³
73Moderate
12:00 PM
💨
PM2.5 11.6 µg/m³
86Moderate
1:00 PM
💨
PM2.5 10.3 µg/m³
90Moderate
2:00 PM
💨
PM2.5 9.1 µg/m³
88Moderate
3:00 PM
💨
PM2.5 8.4 µg/m³
86Moderate
4:00 PM
💨
PM2.5 7.7 µg/m³
80Moderate
5:00 PM
💨
PM2.5 7.4 µg/m³
68Moderate
6:00 PM
💨
PM2.5 7.2 µg/m³
48Good
7:00 PM
💨
PM2.5 7.2 µg/m³
43Good
Next few days
daily max · US EPA AQI
Fri
💨
Moderate · UV Very high
90
Sat
💨
Moderate · UV High
95
Mon
💨
Moderate · UV High
53