Air quality in Lancaster
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
14 µg/m³
WHO guideline 15
PM10
15 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
9:00 AM
💨
PM2.5 14 µg/m³
55Moderate
10:00 AM
💨
PM2.5 10.6 µg/m³
44Good
11:00 AM
💨
PM2.5 8.3 µg/m³
53Moderate
12:00 PM
💨
PM2.5 6.8 µg/m³
60Moderate
1:00 PM
💨
PM2.5 5.9 µg/m³
55Moderate
2:00 PM
💨
PM2.5 5.8 µg/m³
50Good
3:00 PM
💨
PM2.5 5.8 µg/m³
53Moderate
4:00 PM
💨
PM2.5 6.2 µg/m³
56Moderate
5:00 PM
💨
PM2.5 6.5 µg/m³
55Moderate
6:00 PM
💨
PM2.5 6.4 µg/m³
50Good
7:00 PM
💨
PM2.5 6.1 µg/m³
46Good
8:00 PM
💨
PM2.5 5.9 µg/m³
42Good
Next few days
daily max · US EPA AQI
Sat
💨
Moderate · UV Moderate
90
Wed
💨
Moderate · UV High
65