Air quality in San Carlos
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
12.5 µg/m³
WHO guideline 15
PM10
57.6 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
4:00 AM
💨
PM2.5 12.5 µg/m³
52Moderate
5:00 AM
💨
PM2.5 13.3 µg/m³
54Moderate
6:00 AM
💨
PM2.5 14.7 µg/m³
56Moderate
7:00 AM
💨
PM2.5 14.8 µg/m³
57Moderate
8:00 AM
💨
PM2.5 12.8 µg/m³
52Moderate
9:00 AM
💨
PM2.5 13.8 µg/m³
58Moderate
10:00 AM
💨
PM2.5 14.9 µg/m³
68Moderate
11:00 AM
💨
PM2.5 14.1 µg/m³
65Moderate
12:00 PM
💨
PM2.5 12.5 µg/m³
57Moderate
1:00 PM
💨
PM2.5 11.3 µg/m³
53Moderate
2:00 PM
💨
PM2.5 10.4 µg/m³
50Good
3:00 PM
💨
PM2.5 9.8 µg/m³
50Good
Next few days
daily max · US EPA AQI
Fri
💨
Unhealthy for Sensitive Groups · UV Very high
140
Sat
💨
Unhealthy for Sensitive Groups · UV Very high
116
Sun
💨
Moderate · UV Very high
97
Mon
💨
Unhealthy for Sensitive Groups · UV Very high
133
Tue
💨
No data · UV Very high
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