Air quality in Horsham
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
7.5 µg/m³
WHO guideline 15
PM10
8.4 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
1:00 AM
💨
PM2.5 7.5 µg/m³
33Good
2:00 AM
💨
PM2.5 7.2 µg/m³
32Good
3:00 AM
💨
PM2.5 6.5 µg/m³
32Good
4:00 AM
💨
PM2.5 6.1 µg/m³
33Good
5:00 AM
💨
PM2.5 5.8 µg/m³
32Good
6:00 AM
💨
PM2.5 5.3 µg/m³
30Good
7:00 AM
💨
PM2.5 3.7 µg/m³
27Good
8:00 AM
💨
PM2.5 3.1 µg/m³
26Good
9:00 AM
💨
PM2.5 3.2 µg/m³
31Good
10:00 AM
💨
PM2.5 3.8 µg/m³
39Good
11:00 AM
💨
PM2.5 3.9 µg/m³
45Good
12:00 PM
💨
PM2.5 3.9 µg/m³
47Good
Next few days
daily max · US EPA AQI
Wed
💨
Moderate · UV High
73
Thu
💨
Moderate · UV High
60