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
3.4 µg/m³
WHO guideline 15
PM10
4.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
2:00 AM
💨
PM2.5 3.4 µg/m³
26Good
3:00 AM
💨
PM2.5 3.2 µg/m³
26Good
4:00 AM
💨
PM2.5 3.2 µg/m³
27Good
5:00 AM
💨
PM2.5 3.3 µg/m³
27Good
6:00 AM
💨
PM2.5 3.2 µg/m³
26Good
7:00 AM
💨
PM2.5 3.5 µg/m³
25Good
8:00 AM
💨
PM2.5 3.6 µg/m³
24Good
9:00 AM
💨
PM2.5 3.7 µg/m³
26Good
10:00 AM
💨
PM2.5 3.7 µg/m³
28Good
11:00 AM
💨
PM2.5 3.4 µg/m³
31Good
12:00 PM
💨
PM2.5 3.7 µg/m³
33Good
1:00 PM
💨
PM2.5 3.8 µg/m³
34Good
Next few days
daily max · US EPA AQI
Sat
💨
Good · UV Very high
35
Sun
💨
Good · UV Extreme
32
Mon
💨
Good · UV Very high
40
Tue
💨
Good · UV Very high
34
Wed
💨
Good · UV Very high
28