Stay updated with real-time air quality in Sierra Madre, 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)
38
Good
Sierra Madre, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.77 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.58 μg/m³
0
55
155
255
425
605+
24.72 ppb
0
55
71
86
201
201+
0.24 ppb
0
36
76
186
605
1005+
4.55 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Sierra Madre, California
Sierra Madre, California
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AQI 44
Good
7.61μg/m³
PM2.5
25.04μg/m³
PM10
29.61ppb
O3
0.15ppb
SO2
10.23ppb
NO2
0.21ppm
CO
AQI 38
Good
7.35μg/m³
PM2.5
27.53μg/m³
PM10
34.37ppb
O3
0.16ppb
SO2
7.82ppb
NO2
0.20ppm
CO
AQI 44
Good
7.89μg/m³
PM2.5
26.76μg/m³
PM10
30.34ppb
O3
0.15ppb
SO2
10.15ppb
NO2
0.21ppm
CO
AQI 44
Good
7.86μg/m³
PM2.5
25.60μg/m³
PM10
28.17ppb
O3
0.15ppb
SO2
10.96ppb
NO2
0.21ppm
CO
AQI 44
Good
7.89μg/m³
PM2.5
27.63μg/m³
PM10
31.38ppb
O3
0.15ppb
SO2
9.66ppb
NO2
0.20ppm
CO
AQI 38
Good
7.35μg/m³
PM2.5
27.53μg/m³
PM10
34.37ppb
O3
0.16ppb
SO2
7.82ppb
NO2
0.20ppm
CO
Air quality data and pollutant measurements for California, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Sierra Madre, California is updated every hour.
The worst air quality in Sierra Madre, California in the last 24 hours was observed at 12:00:00 on 2025-07-22.
In the last 24 hrs, the best air quality in Sierra Madre, California was observed at 10:00:00 on 2025-07-22.
The current air quality in Sierra Madre, California is 44, categorized as Good based on real-time data.
The most common pollutant in Sierra Madre, California is PM2.5.
If the air quality in Sierra Madre, California is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Sierra Madre, California is 7.684 μg/m3.
The current PM10 concentration at Sierra Madre, California is 25.576 μg/m3.
The current carbon monoxide (CO) concentration at Sierra Madre, California is 0.21 ppm.
The current sulfur dioxide (SO2) concentration at Sierra Madre, California is 0.153 ppb.
The current ozone (O3) concentration at Sierra Madre, California is 30.22 ppm.
The current nitrogen dioxide (NO2) concentration at Sierra Madre, California is 10.077 ppb.
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