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
15.5 µg/m³
WHO guideline 15
PM10
15.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
11:00 AM
💨
PM2.5 15.5 µg/m³
76Moderate
12:00 PM
💨
PM2.5 16.1 µg/m³
117Unhealthy for Sensitive Groups
1:00 PM
💨
PM2.5 15.7 µg/m³
145Unhealthy for Sensitive Groups
2:00 PM
💨
PM2.5 15.3 µg/m³
147Unhealthy for Sensitive Groups
3:00 PM
💨
PM2.5 14.8 µg/m³
131Unhealthy for Sensitive Groups
4:00 PM
💨
PM2.5 13.7 µg/m³
113Unhealthy for Sensitive Groups
5:00 PM
💨
PM2.5 13.1 µg/m³
100Moderate
6:00 PM
💨
PM2.5 13.2 µg/m³
81Moderate
7:00 PM
💨
PM2.5 14.1 µg/m³
61Moderate
8:00 PM
💨
PM2.5 14.3 µg/m³
56Moderate
9:00 PM
💨
PM2.5 13.9 µg/m³
55Moderate
10:00 PM
💨
PM2.5 13.3 µg/m³
54Moderate
Next few days
daily max · US EPA AQI
Wed
💨
Unhealthy for Sensitive Groups · UV High
147
Thu
💨
Unhealthy for Sensitive Groups · UV High
126
Fri
💨
Moderate · UV High
95
Sat
💨
Unhealthy for Sensitive Groups · UV Moderate
145
Sun
💨
Moderate · UV High
84