Stay updated with real-time air quality in South Pasadena, 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)
54
Moderate
South Pasadena, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.96 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
31.85 μg/m³
0
55
155
255
425
605+
36.66 ppb
0
55
71
86
201
201+
0.58 ppb
0
36
76
186
605
1005+
3.54 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
South Pasadena, California
South Pasadena, California
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AQI 54
Moderate
10.87μg/m³
PM2.5
33.32μg/m³
PM10
36.41ppb
O3
0.57ppb
SO2
3.74ppb
NO2
0.14ppm
CO
AQI 54
Moderate
10.97μg/m³
PM2.5
31.86μg/m³
PM10
36.83ppb
O3
0.57ppb
SO2
3.26ppb
NO2
0.14ppm
CO
AQI 54
Moderate
10.91μg/m³
PM2.5
32.36μg/m³
PM10
36.78ppb
O3
0.57ppb
SO2
3.25ppb
NO2
0.14ppm
CO
AQI 54
Moderate
10.80μg/m³
PM2.5
34.66μg/m³
PM10
36.28ppb
O3
0.56ppb
SO2
3.75ppb
NO2
0.14ppm
CO
AQI 54
Moderate
10.65μg/m³
PM2.5
37.79μg/m³
PM10
35.60ppb
O3
0.54ppb
SO2
4.44ppb
NO2
0.14ppm
CO
AQI 54
Moderate
10.88μg/m³
PM2.5
34.96μg/m³
PM10
36.38ppb
O3
0.56ppb
SO2
3.69ppb
NO2
0.15ppm
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 South Pasadena, California is updated on an hourly basis.
The worst air quality in South Pasadena, California was recorded at 10:00:00 on 2026-06-07.
The best air quality in South Pasadena, California was recorded at 07:00:00 on 2026-06-08.
The real-time air quality index in South Pasadena, California is 54, currently categorized as Moderate.
The most common pollutant in South Pasadena, California is PM2.5.
If the air quality in South Pasadena, California is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in South Pasadena, California at present are 10.961 μg/m3.
The current PM10 levels in South Pasadena, California are 31.849 μg/m3.
The current carbon monoxide (CO) level in South Pasadena, California is 0.14 ppm.
The current sulfur dioxide (SO2) levels in South Pasadena, California are 0.579 ppb.
The current ozone (O3) levels at South Pasadena, California is 36.661 ppm.
The current nitrogen dioxide (NO2) levels at South Pasadena, California is 3.539 ppb.
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