Air quality in Aspen Hill
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
5.6 µg/m³
WHO guideline 15
PM10
5.7 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
6:00 AM
💨
PM2.5 5.6 µg/m³
23Good
7:00 AM
💨
PM2.5 5.2 µg/m³
22Good
8:00 AM
💨
PM2.5 5.3 µg/m³
22Good
9:00 AM
💨
PM2.5 5.2 µg/m³
27Good
10:00 AM
💨
PM2.5 4.7 µg/m³
37Good
11:00 AM
💨
PM2.5 4.5 µg/m³
45Good
12:00 PM
💨
PM2.5 4.1 µg/m³
48Good
1:00 PM
💨
PM2.5 3.9 µg/m³
49Good
2:00 PM
💨
PM2.5 3.7 µg/m³
49Good
3:00 PM
💨
PM2.5 3.8 µg/m³
49Good
4:00 PM
💨
PM2.5 3.6 µg/m³
49Good
5:00 PM
💨
PM2.5 3.5 µg/m³
47Good
Next few days
daily max · US EPA AQI
Wed
💨
Unhealthy for Sensitive Groups · UV Very high
133
Thu
💨
Moderate · UV High
93
Fri
💨
Unhealthy for Sensitive Groups · UV High
103
Sat
💨
Moderate · UV High
67