Air quality in Mount Washington
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
3.6 µg/m³
WHO guideline 15
PM10
3.7 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
1:00 PM
💨
PM2.5 3.6 µg/m³
68Moderate
2:00 PM
💨
PM2.5 3.6 µg/m³
83Moderate
3:00 PM
💨
PM2.5 3.6 µg/m³
88Moderate
4:00 PM
💨
PM2.5 4.6 µg/m³
86Moderate
5:00 PM
💨
PM2.5 4.1 µg/m³
80Moderate
6:00 PM
💨
PM2.5 4.6 µg/m³
66Moderate
7:00 PM
💨
PM2.5 5.1 µg/m³
50Good
8:00 PM
💨
PM2.5 5.6 µg/m³
45Good
9:00 PM
💨
PM2.5 6.5 µg/m³
40Good
10:00 PM
💨
PM2.5 6.3 µg/m³
35Good
11:00 PM
💨
PM2.5 5.9 µg/m³
31Good
12:00 AM
💨
PM2.5 5.8 µg/m³
28Good
Next few days
daily max · US EPA AQI
Thu
💨
Moderate · UV High
88
Fri
💨
Moderate · UV Very high
86
Sat
💨
Moderate · UV High
76
Sun
💨
Good · UV Very high
50