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)
52
Moderate
South Pasadena, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.10 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.22 μg/m³
0
55
155
255
425
605+
43.74 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
6.75 ppb
0
54
101
361
1250
2050+
0.23 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 52
Moderate
10.40μg/m³
PM2.5
30.80μg/m³
PM10
42.08ppb
O3
0.63ppb
SO2
7.84ppb
NO2
0.25ppm
CO
AQI 52
Moderate
9.91μg/m³
PM2.5
28.37μg/m³
PM10
44.85ppb
O3
0.67ppb
SO2
5.98ppb
NO2
0.21ppm
CO
AQI 52
Moderate
10.11μg/m³
PM2.5
29.28μg/m³
PM10
44.65ppb
O3
0.67ppb
SO2
6.26ppb
NO2
0.22ppm
CO
AQI 54
Moderate
10.60μg/m³
PM2.5
31.85μg/m³
PM10
41.28ppb
O3
0.63ppb
SO2
8.38ppb
NO2
0.26ppm
CO
AQI 54
Moderate
11.44μg/m³
PM2.5
36.18μg/m³
PM10
35.62ppb
O3
0.56ppb
SO2
11.94ppb
NO2
0.33ppm
CO
AQI 52
Moderate
10.47μg/m³
PM2.5
29.69μg/m³
PM10
41.91ppb
O3
0.64ppb
SO2
7.82ppb
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 01:00:00 on 2025-12-07.
The best air quality in South Pasadena, California was recorded at 02:00:00 on 2025-12-07.
The real-time air quality index in South Pasadena, California is 52, 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 10.103 μg/m3.
The current PM10 levels in South Pasadena, California are 29.222 μg/m3.
The current carbon monoxide (CO) level in South Pasadena, California is 0.227 ppm.
The current sulfur dioxide (SO2) levels in South Pasadena, California are 0.649 ppb.
The current ozone (O3) levels at South Pasadena, California is 43.743 ppm.
The current nitrogen dioxide (NO2) levels at South Pasadena, California is 6.754 ppb.
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