Air quality in Diamond Bar
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
2 µg/m³
WHO guideline 15
PM10
2.6 µg/m³
WHO guideline 45
Hour by hour (12h) US EPA AQI
5:00 PM
💨
PM2.5 2 µg/m³
43 Good
6:00 PM
💨
PM2.5 2 µg/m³
36 Good
7:00 PM
💨
PM2.5 3.2 µg/m³
27 Good
8:00 PM
💨
PM2.5 5.9 µg/m³
25 Good
9:00 PM
💨
PM2.5 8.2 µg/m³
34 Good
10:00 PM
💨
PM2.5 10.9 µg/m³
45 Good
11:00 PM
💨
PM2.5 13.5 µg/m³
54 Moderate
12:00 AM
💨
PM2.5 14.1 µg/m³
55 Moderate
1:00 AM
💨
PM2.5 13.5 µg/m³
54 Moderate
2:00 AM
💨
PM2.5 13.2 µg/m³
53 Moderate
3:00 AM
💨
PM2.5 12.6 µg/m³
52 Moderate
4:00 AM
💨
PM2.5 11.4 µg/m³
48 Good
Next few days daily max · US EPA AQI
Thu
💨
Moderate · UV High
61
Fri
💨
Moderate · UV Moderate
55
Sat
💨
Moderate · UV High
51
Sun
💨
Moderate · UV High
71
Mon
💨
Moderate · UV High
76
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Precip NEXRAD · NOAA Temp Wind Clouds Terrain