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
25.1 µg/m³
WHO guideline 15
PM10
40.5 µg/m³
WHO guideline 45
Hour by hour (12h) US EPA AQI
3:00 PM
💨
PM2.5 25.1 µg/m³
78 Moderate
4:00 PM
💨
PM2.5 21.8 µg/m³
71 Moderate
5:00 PM
💨
PM2.5 19.3 µg/m³
66 Moderate
6:00 PM
💨
PM2.5 17.9 µg/m³
63 Moderate
7:00 PM
💨
PM2.5 19.4 µg/m³
66 Moderate
8:00 PM
💨
PM2.5 22.5 µg/m³
73 Moderate
9:00 PM
💨
PM2.5 25.1 µg/m³
78 Moderate
10:00 PM
💨
PM2.5 26.7 µg/m³
82 Moderate
11:00 PM
💨
PM2.5 27.7 µg/m³
84 Moderate
12:00 AM
💨
PM2.5 29.2 µg/m³
87 Moderate
1:00 AM
💨
PM2.5 30.7 µg/m³
90 Moderate
2:00 AM
💨
PM2.5 31.5 µg/m³
92 Moderate
Next few days daily max · US EPA AQI
Mon
💨
Unhealthy for Sensitive Groups · UV Moderate
122
Tue
💨
Unhealthy for Sensitive Groups · UV Moderate
101
Wed
💨
Moderate · UV Moderate
77
Thu
💨
Moderate · UV Moderate
57
Fri
💨
Moderate · UV High
51
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Precip NEXRAD · NOAA Temp Wind Clouds Terrain