Air quality in Altadena
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
8.4 µg/m³
WHO guideline 15
PM10
8.8 µg/m³
WHO guideline 45
Hour by hour (12h) US EPA AQI
11:00 AM
💨
PM2.5 8.4 µg/m³
35 Good
12:00 PM
💨
PM2.5 8 µg/m³
38 Good
1:00 PM
💨
PM2.5 7.8 µg/m³
42 Good
2:00 PM
💨
PM2.5 7.9 µg/m³
44 Good
3:00 PM
💨
PM2.5 8.5 µg/m³
45 Good
4:00 PM
💨
PM2.5 9.4 µg/m³
46 Good
5:00 PM
💨
PM2.5 10.4 µg/m³
43 Good
6:00 PM
💨
PM2.5 11.2 µg/m³
47 Good
7:00 PM
💨
PM2.5 12.5 µg/m³
52 Moderate
8:00 PM
💨
PM2.5 13.6 µg/m³
54 Moderate
9:00 PM
💨
PM2.5 14.8 µg/m³
57 Moderate
10:00 PM
💨
PM2.5 16.2 µg/m³
60 Moderate
Next few days daily max · US EPA AQI
Wed
💨
Moderate · UV High
66
Thu
💨
Moderate · UV High
64
Fri
💨
Moderate · UV High
58
Sat
💨
Moderate · UV High
57
Sun
💨
Moderate · UV High
65
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Precip NEXRAD · NOAA Temp Wind Clouds Terrain