Air quality in Alstead
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
3.1 µg/m³
WHO guideline 15
PM10
3.2 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
11:00 PM
💨
PM2.5 3.1 µg/m³
35Good
12:00 AM
💨
PM2.5 3.8 µg/m³
33Good
1:00 AM
💨
PM2.5 4.5 µg/m³
30Good
2:00 AM
💨
PM2.5 5.1 µg/m³
26Good
3:00 AM
💨
PM2.5 5.5 µg/m³
24Good
4:00 AM
💨
PM2.5 5.8 µg/m³
24Good
5:00 AM
💨
PM2.5 6 µg/m³
25Good
6:00 AM
💨
PM2.5 5.6 µg/m³
23Good
7:00 AM
💨
PM2.5 5.3 µg/m³
22Good
8:00 AM
💨
PM2.5 5.5 µg/m³
23Good
9:00 AM
💨
PM2.5 4.6 µg/m³
24Good
10:00 AM
💨
PM2.5 3.5 µg/m³
30Good
Next few days
daily max · US EPA AQI
Tue
💨
Good · UV Moderate
45
Thu
💨
Moderate · UV High
93