Air quality in Santa Ana
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
15.2 µg/m³
WHO guideline 15
PM10
17.2 µg/m³
WHO guideline 45
Hour by hour (12h) US EPA AQI
5:00 PM
💨
PM2.5 15.2 µg/m³
58 Moderate
6:00 PM
💨
PM2.5 16.1 µg/m³
59 Moderate
7:00 PM
💨
PM2.5 15.3 µg/m³
58 Moderate
8:00 PM
💨
PM2.5 13.1 µg/m³
53 Moderate
9:00 PM
💨
PM2.5 11.9 µg/m³
50 Good
10:00 PM
💨
PM2.5 11.6 µg/m³
48 Good
11:00 PM
💨
PM2.5 12 µg/m³
50 Good
12:00 AM
💨
PM2.5 12.7 µg/m³
52 Moderate
1:00 AM
💨
PM2.5 13.7 µg/m³
54 Moderate
2:00 AM
💨
PM2.5 14.8 µg/m³
57 Moderate
3:00 AM
💨
PM2.5 14.8 µg/m³
57 Moderate
4:00 AM
💨
PM2.5 13.6 µg/m³
54 Moderate
Next few days daily max · US EPA AQI
Thu
💨
Moderate · UV High
59
Fri
💨
Moderate · UV Moderate
57
Sat
💨
Good · UV Moderate
48
Sun
💨
Moderate · UV High
58
Mon
💨
Moderate · UV Moderate
61
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Precip NEXRAD · NOAA Temp Wind Clouds Terrain