Air quality in Downey
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
27.3 µg/m³
WHO guideline 15
PM10
31.1 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
12:00 PM
💨
PM2.5 27.3 µg/m³
83Moderate
1:00 PM
💨
PM2.5 26.5 µg/m³
98Moderate
2:00 PM
💨
PM2.5 26.4 µg/m³
119Unhealthy for Sensitive Groups
3:00 PM
💨
PM2.5 24.7 µg/m³
120Unhealthy for Sensitive Groups
4:00 PM
💨
PM2.5 22.4 µg/m³
108Unhealthy for Sensitive Groups
5:00 PM
💨
PM2.5 19.8 µg/m³
90Moderate
6:00 PM
💨
PM2.5 17.7 µg/m³
63Moderate
7:00 PM
💨
PM2.5 16.9 µg/m³
61Moderate
8:00 PM
💨
PM2.5 17.9 µg/m³
63Moderate
9:00 PM
💨
PM2.5 19.1 µg/m³
66Moderate
10:00 PM
💨
PM2.5 20 µg/m³
68Moderate
11:00 PM
💨
PM2.5 21.7 µg/m³
71Moderate
Next few days
daily max · US EPA AQI
Fri
💨
Unhealthy for Sensitive Groups · UV Very high
120
Sat
💨
Unhealthy for Sensitive Groups · UV Very high
131
Sun
💨
Unhealthy for Sensitive Groups · UV Very high
120
Mon
💨
Moderate · UV Very high
93
Tue
💨
No data · UV Very high
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