Stay updated with real-time air quality in Norwalk, 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)
62
Moderate
Norwalk, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
15.02 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
37.49 μg/m³
0
55
155
255
425
605+
38.93 ppb
0
55
71
86
201
201+
0.45 ppb
0
36
76
186
605
1005+
10.59 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Norwalk, California
Norwalk, California
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AQI 49
Good
9.12μg/m³
PM2.5
38.34μg/m³
PM10
36.29ppb
O3
0.27ppb
SO2
12.52ppb
NO2
0.16ppm
CO
AQI 49
Good
8.97μg/m³
PM2.5
38.40μg/m³
PM10
36.09ppb
O3
0.28ppb
SO2
11.35ppb
NO2
0.17ppm
CO
AQI 54
Moderate
10.54μg/m³
PM2.5
45.91μg/m³
PM10
35.70ppb
O3
0.37ppb
SO2
11.10ppb
NO2
0.22ppm
CO
AQI 58
Moderate
12.60μg/m³
PM2.5
27.61μg/m³
PM10
34.43ppb
O3
0.39ppb
SO2
8.36ppb
NO2
0.22ppm
CO
AQI 54
Moderate
10.80μg/m³
PM2.5
42.03μg/m³
PM10
36.19ppb
O3
0.30ppb
SO2
11.59ppb
NO2
0.18ppm
CO
AQI 54
Moderate
11.25μg/m³
PM2.5
46.86μg/m³
PM10
34.72ppb
O3
0.41ppb
SO2
10.83ppb
NO2
0.22ppm
CO
Air quality measurements for California, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Norwalk, California is updated on an hourly basis.
The worst air quality in Norwalk, California was recorded at 08:00:00 on 2025-06-06.
The best air quality in Norwalk, California was recorded at 09:00:00 on 2025-06-06.
The real-time air quality index in Norwalk, California is 62, currently categorized as Moderate.
The most common pollutant in Norwalk, California is PM2.5.
If the air quality in Norwalk, California is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Norwalk, California at present are 15.023 μg/m3.
The current PM10 levels in Norwalk, California are 37.491 μg/m3.
The current carbon monoxide (CO) level in Norwalk, California is 0.156 ppm.
The current sulfur dioxide (SO2) levels in Norwalk, California are 0.447 ppb.
The current ozone (O3) levels at Norwalk, California is 38.933 ppm.
The current nitrogen dioxide (NO2) levels at Norwalk, California is 10.593 ppb.
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