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)
49
Good
South Pasadena, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.26 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
42.34 μg/m³
0
55
155
255
425
605+
10.92 ppb
0
55
71
86
201
201+
1.04 ppb
0
36
76
186
605
1005+
38.75 ppb
0
54
101
361
1250
2050+
1.26 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
9.78μg/m³
PM2.5
44.02μg/m³
PM10
10.05ppb
O3
1.03ppb
SO2
38.89ppb
NO2
1.27ppm
CO
AQI 49
Good
8.93μg/m³
PM2.5
42.02μg/m³
PM10
11.47ppb
O3
1.03ppb
SO2
38.58ppb
NO2
1.25ppm
CO
AQI 49
Good
9.06μg/m³
PM2.5
42.68μg/m³
PM10
11.29ppb
O3
1.02ppb
SO2
38.56ppb
NO2
1.26ppm
CO
AQI 52
Moderate
10.05μg/m³
PM2.5
45.38μg/m³
PM10
9.60ppb
O3
1.01ppb
SO2
38.91ppb
NO2
1.28ppm
CO
AQI 54
Moderate
11.40μg/m³
PM2.5
49.03μg/m³
PM10
7.32ppb
O3
0.99ppb
SO2
39.37ppb
NO2
1.31ppm
CO
AQI 52
Moderate
9.93μg/m³
PM2.5
45.13μg/m³
PM10
9.84ppb
O3
1.01ppb
SO2
38.76ppb
NO2
1.27ppm
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 03:00:00 on 2026-01-14.
The best air quality in South Pasadena, California was recorded at 02:00:00 on 2026-01-14.
The real-time air quality index in South Pasadena, California is 49, currently categorized as Good.
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 9.261 μg/m3.
The current PM10 levels in South Pasadena, California are 42.341 μg/m3.
The current carbon monoxide (CO) level in South Pasadena, California is 1.258 ppm.
The current sulfur dioxide (SO2) levels in South Pasadena, California are 1.044 ppb.
The current ozone (O3) levels at South Pasadena, California is 10.92 ppm.
The current nitrogen dioxide (NO2) levels at South Pasadena, California is 38.754 ppb.
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