Air quality in Westchester
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
7.6 µg/m³
WHO guideline 15
PM10
12.4 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
8:00 AM
💨
PM2.5 7.6 µg/m³
32Good
9:00 AM
💨
PM2.5 7.5 µg/m³
31Good
10:00 AM
💨
PM2.5 7.4 µg/m³
31Good
11:00 AM
💨
PM2.5 7 µg/m³
29Good
12:00 PM
💨
PM2.5 6.8 µg/m³
28Good
1:00 PM
💨
PM2.5 6.9 µg/m³
29Good
2:00 PM
💨
PM2.5 7.2 µg/m³
30Good
3:00 PM
💨
PM2.5 8.1 µg/m³
34Good
4:00 PM
💨
PM2.5 9.6 µg/m³
40Good
5:00 PM
💨
PM2.5 9.9 µg/m³
41Good
6:00 PM
💨
PM2.5 10.7 µg/m³
45Good
7:00 PM
💨
PM2.5 11.6 µg/m³
48Good
Next few days
daily max · US EPA AQI
Sat
💨
Moderate · UV Very high
56
Sun
💨
Moderate · UV Very high
58
Mon
💨
Moderate · UV Very high
62
Tue
💨
Good · UV Extreme
48
Wed
💨
Good · UV Very high
29