Air quality in National City
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
9.1 µg/m³
WHO guideline 15
PM10
23.3 µg/m³
WHO guideline 45
Hour by hour (12h) US EPA AQI
11:00 AM
💨
PM2.5 9.1 µg/m³
38 Good
12:00 PM
💨
PM2.5 10.1 µg/m³
42 Good
1:00 PM
💨
PM2.5 11.1 µg/m³
46 Good
2:00 PM
💨
PM2.5 12.6 µg/m³
52 Moderate
3:00 PM
💨
PM2.5 16.4 µg/m³
60 Moderate
4:00 PM
💨
PM2.5 22.6 µg/m³
73 Moderate
5:00 PM
💨
PM2.5 30.3 µg/m³
89 Moderate
6:00 PM
💨
PM2.5 37.4 µg/m³
106 Unhealthy for Sensitive Groups
7:00 PM
💨
PM2.5 43.2 µg/m³
120 Unhealthy for Sensitive Groups
8:00 PM
💨
PM2.5 48.2 µg/m³
132 Unhealthy for Sensitive Groups
9:00 PM
💨
PM2.5 50.9 µg/m³
139 Unhealthy for Sensitive Groups
10:00 PM
💨
PM2.5 51.9 µg/m³
141 Unhealthy for Sensitive Groups
Next few days daily max · US EPA AQI
Sun
💨
Unhealthy for Sensitive Groups · UV High
141
Mon
💨
Unhealthy for Sensitive Groups · UV Moderate
137
Tue
💨
Unhealthy for Sensitive Groups · UV Moderate
117
Wed
💨
Moderate · UV Moderate
79
Thu
💨
Moderate · UV High
67
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Precip NEXRAD · NOAA Temp Wind Clouds Terrain