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)
44
Good
Sierra Madre, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
7.56 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
30.18 μg/m³
0
55
155
255
425
605+
23.59 ppb
0
55
71
86
201
201+
0.30 ppb
0
36
76
186
605
1005+
8.02 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
8.34μg/m³
PM2.5
32.36μg/m³
PM10
21.83ppb
O3
0.24ppb
SO2
10.88ppb
NO2
0.26ppm
CO
AQI 52
Moderate
9.62μg/m³
PM2.5
42.29μg/m³
PM10
27.00ppb
O3
0.24ppb
SO2
17.79ppb
NO2
0.26ppm
CO
AQI 49
Good
8.80μg/m³
PM2.5
33.15μg/m³
PM10
19.06ppb
O3
0.23ppb
SO2
11.60ppb
NO2
0.28ppm
CO
AQI 49
Good
9.17μg/m³
PM2.5
33.35μg/m³
PM10
21.10ppb
O3
0.24ppb
SO2
10.36ppb
NO2
0.26ppm
CO
AQI 49
Good
9.15μg/m³
PM2.5
33.82μg/m³
PM10
16.24ppb
O3
0.23ppb
SO2
12.45ppb
NO2
0.29ppm
CO
AQI 52
Moderate
9.62μg/m³
PM2.5
42.29μg/m³
PM10
27.00ppb
O3
0.24ppb
SO2
17.79ppb
NO2
0.26ppm
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 11:00:00 on 2025-06-14.
In the last 24 hrs, the best air quality in Sierra Madre, California was observed at 01:00:00 on 2025-06-15.
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 7.556 μg/m3.
The current PM10 concentration at Sierra Madre, California is 30.176 μg/m3.
The current carbon monoxide (CO) concentration at Sierra Madre, California is 0.198 ppm.
The current sulfur dioxide (SO2) concentration at Sierra Madre, California is 0.302 ppb.
The current ozone (O3) concentration at Sierra Madre, California is 23.59 ppm.
The current nitrogen dioxide (NO2) concentration at Sierra Madre, California is 8.017 ppb.
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