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)
74
Moderate
South Pasadena, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
15.15 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
68.97 μg/m³
0
55
155
255
425
605+
62.49 ppb
0
55
71
86
201
201+
0.98 ppb
0
36
76
186
605
1005+
9.72 ppb
0
54
101
361
1250
2050+
0.24 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 74
Moderate
15.50μg/m³
PM2.5
71.15μg/m³
PM10
62.45ppb
O3
0.96ppb
SO2
9.86ppb
NO2
0.24ppm
CO
AQI 80
Moderate
15.09μg/m³
PM2.5
69.58μg/m³
PM10
63.85ppb
O3
0.98ppb
SO2
9.82ppb
NO2
0.24ppm
CO
AQI 80
Moderate
15.20μg/m³
PM2.5
70.49μg/m³
PM10
64.20ppb
O3
0.97ppb
SO2
9.89ppb
NO2
0.24ppm
CO
AQI 77
Moderate
15.59μg/m³
PM2.5
71.36μg/m³
PM10
62.57ppb
O3
0.95ppb
SO2
9.86ppb
NO2
0.24ppm
CO
AQI 67
Moderate
16.12μg/m³
PM2.5
72.67μg/m³
PM10
59.93ppb
O3
0.93ppb
SO2
9.82ppb
NO2
0.25ppm
CO
AQI 77
Moderate
15.52μg/m³
PM2.5
71.20μg/m³
PM10
63.02ppb
O3
0.95ppb
SO2
9.87ppb
NO2
0.24ppm
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 09:00:00 on 2026-07-23.
The best air quality in South Pasadena, California was recorded at 02:00:00 on 2026-07-23.
The real-time air quality index in South Pasadena, California is 74, currently categorized as Moderate.
The most common pollutant in South Pasadena, California is O3.
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 15.149 μg/m3.
The current PM10 levels in South Pasadena, California are 68.971 μg/m3.
The current carbon monoxide (CO) level in South Pasadena, California is 0.237 ppm.
The current sulfur dioxide (SO2) levels in South Pasadena, California are 0.982 ppb.
The current ozone (O3) levels at South Pasadena, California is 62.49 ppm.
The current nitrogen dioxide (NO2) levels at South Pasadena, California is 9.724 ppb.
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