Air quality in Castle Shannon
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
17.9 µg/m³
WHO guideline 15
PM10
18.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
9:00 PM
💨
PM2.5 17.9 µg/m³
63Moderate
10:00 PM
💨
PM2.5 18.5 µg/m³
64Moderate
11:00 PM
💨
PM2.5 18.9 µg/m³
65Moderate
12:00 AM
💨
PM2.5 19.4 µg/m³
66Moderate
1:00 AM
💨
PM2.5 19.8 µg/m³
67Moderate
2:00 AM
💨
PM2.5 19.3 µg/m³
66Moderate
3:00 AM
💨
PM2.5 18.3 µg/m³
64Moderate
4:00 AM
💨
PM2.5 17.7 µg/m³
63Moderate
5:00 AM
💨
PM2.5 17.6 µg/m³
63Moderate
6:00 AM
💨
PM2.5 17.3 µg/m³
62Moderate
7:00 AM
💨
PM2.5 17.6 µg/m³
63Moderate
8:00 AM
💨
PM2.5 19.3 µg/m³
66Moderate
Next few days
daily max · US EPA AQI
Sun
💨
Moderate · UV High
90
Mon
💨
Unhealthy for Sensitive Groups · UV Moderate
115
Tue
💨
Unhealthy for Sensitive Groups · UV Moderate
119
Wed
💨
Unhealthy for Sensitive Groups · UV Very high
129