Stay updated with real-time air quality in South El Monte, California featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
49
Good
South El Monte, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.42 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
41.02 μg/m³
0
55
155
255
425
605+
34.99 ppb
0
55
71
86
201
201+
0.50 ppb
0
36
76
186
605
1005+
4.37 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
South El Monte, California
South El Monte, California
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AQI 54
Moderate
11.30μg/m³
PM2.5
46.29μg/m³
PM10
33.70ppb
O3
0.50ppb
SO2
3.96ppb
NO2
0.15ppm
CO
AQI 54
Moderate
11.36μg/m³
PM2.5
42.07μg/m³
PM10
33.97ppb
O3
0.54ppb
SO2
3.95ppb
NO2
0.14ppm
CO
AQI 54
Moderate
11.07μg/m³
PM2.5
45.64μg/m³
PM10
33.29ppb
O3
0.48ppb
SO2
3.77ppb
NO2
0.15ppm
CO
AQI 54
Moderate
11.26μg/m³
PM2.5
39.56μg/m³
PM10
34.01ppb
O3
0.54ppb
SO2
3.72ppb
NO2
0.14ppm
CO
AQI 54
Moderate
11.13μg/m³
PM2.5
38.16μg/m³
PM10
33.35ppb
O3
0.56ppb
SO2
4.44ppb
NO2
0.14ppm
CO
AQI 54
Moderate
10.62μg/m³
PM2.5
41.94μg/m³
PM10
32.48ppb
O3
0.47ppb
SO2
3.40ppb
NO2
0.15ppm
CO
Air quality and pollutant data for California, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for South El Monte, California is updated every hour for accuracy.
In the past 24 hours, the air quality in South El Monte, California was at its worst at 01:00:00 on 2026-06-08.
In the last 24 hours, the best air quality in South El Monte, California was observed at 04:00:00 on 2026-06-07.
As of now, the AQI in South El Monte, California is 49, indicating Good conditions.
South El Monte, California air has the highest levels of PM2.5.
Poor air quality in South El Monte, California means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in South El Monte, California are currently 9.423 μg/m3.
The PM10 concentration in South El Monte, California is 41.017 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in South El Monte, California is 0.126 ppm.
Currently, South El Monte, California has a sulfur dioxide (SO2) concentration of 0.498 ppb.
The current ozone (O3) level in South El Monte, California at the moment is 34.986 ppm.
Nitrogen dioxide (NO2) level in South El Monte, California at the moment is 4.372 ppb.
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