Air quality in Union
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
15.8 µg/m³
WHO guideline 15
PM10
16.2 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
7:00 AM
💨
PM2.5 15.8 µg/m³
59Moderate
8:00 AM
💨
PM2.5 16.3 µg/m³
60Moderate
9:00 AM
💨
PM2.5 14.5 µg/m³
56Moderate
10:00 AM
💨
PM2.5 13.7 µg/m³
54Moderate
11:00 AM
💨
PM2.5 13 µg/m³
70Moderate
12:00 PM
💨
PM2.5 12.3 µg/m³
86Moderate
1:00 PM
💨
PM2.5 11.7 µg/m³
91Moderate
2:00 PM
💨
PM2.5 10.9 µg/m³
91Moderate
3:00 PM
💨
PM2.5 10.7 µg/m³
86Moderate
4:00 PM
💨
PM2.5 10.6 µg/m³
78Moderate
5:00 PM
💨
PM2.5 10.2 µg/m³
66Moderate
6:00 PM
💨
PM2.5 9.4 µg/m³
55Moderate
Next few days
daily max · US EPA AQI
Fri
💨
Moderate · UV High
91
Sat
💨
Moderate · UV High
96
Sun
💨
Good · UV Very high
46
Mon
💨
Moderate · UV Very high
53
Tue
💨
No data · UV Very high
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