Air quality in Larkspur
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
29.7 µg/m³
WHO guideline 15
PM10
30.2 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
11:00 PM
💨
PM2.5 29.7 µg/m³
88Moderate
12:00 AM
💨
PM2.5 32.7 µg/m³
94Moderate
1:00 AM
💨
PM2.5 34.1 µg/m³
97Moderate
2:00 AM
💨
PM2.5 33.8 µg/m³
97Moderate
3:00 AM
💨
PM2.5 33.9 µg/m³
97Moderate
4:00 AM
💨
PM2.5 34 µg/m³
97Moderate
5:00 AM
💨
PM2.5 33.5 µg/m³
96Moderate
6:00 AM
💨
PM2.5 31.9 µg/m³
93Moderate
7:00 AM
💨
PM2.5 27.4 µg/m³
83Moderate
8:00 AM
💨
PM2.5 23.3 µg/m³
75Moderate
9:00 AM
💨
PM2.5 20.7 µg/m³
69Moderate
10:00 AM
💨
PM2.5 15.6 µg/m³
58Moderate
Next few days
daily max · US EPA AQI
Thu
💨
Moderate · UV Low
88
Fri
💨
Moderate · UV Moderate
97
Sat
💨
Moderate · UV Moderate
71
Sun
💨
Moderate · UV Moderate
71
Mon
💨
Moderate · UV Moderate
52