Air quality in Winchester
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
8.2 µg/m³
WHO guideline 15
PM10
16.7 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
9:00 AM
💨
PM2.5 8.2 µg/m³
34Good
10:00 AM
💨
PM2.5 7.4 µg/m³
39Good
11:00 AM
💨
PM2.5 6.5 µg/m³
50Good
12:00 PM
💨
PM2.5 5.6 µg/m³
51Moderate
1:00 PM
💨
PM2.5 5.2 µg/m³
48Good
2:00 PM
💨
PM2.5 4.9 µg/m³
46Good
3:00 PM
💨
PM2.5 4.7 µg/m³
46Good
4:00 PM
💨
PM2.5 4.6 µg/m³
46Good
5:00 PM
💨
PM2.5 4.5 µg/m³
46Good
6:00 PM
💨
PM2.5 4.3 µg/m³
45Good
7:00 PM
💨
PM2.5 4.1 µg/m³
43Good
8:00 PM
💨
PM2.5 4.5 µg/m³
41Good
Next few days
daily max · US EPA AQI
Wed
💨
Moderate · UV Very high
51
Thu
💨
Good · UV Very high
50
Fri
💨
Moderate · UV Very high
71
Sat
💨
Moderate · UV Very high
86
Sun
💨
Good · UV Very high
44