Stay updated with real-time air quality in 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)
40
Good
Pasadena, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.76 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.34 μg/m³
0
55
155
255
425
605+
42.98 ppb
0
55
71
86
201
201+
0.26 ppb
0
36
76
186
605
1005+
1.01 ppb
0
54
101
361
1250
2050+
0.11 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Pasadena, California
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AQI 40
Good
2.75μg/m³
PM2.5
18.30μg/m³
PM10
42.93ppb
O3
0.25ppb
SO2
1.04ppb
NO2
0.11ppm
CO
AQI 40
Good
2.79μg/m³
PM2.5
18.19μg/m³
PM10
43.05ppb
O3
0.26ppb
SO2
1.00ppb
NO2
0.11ppm
CO
AQI 40
Good
2.80μg/m³
PM2.5
17.83μg/m³
PM10
43.10ppb
O3
0.26ppb
SO2
0.99ppb
NO2
0.11ppm
CO
AQI 40
Good
2.85μg/m³
PM2.5
17.44μg/m³
PM10
43.28ppb
O3
0.26ppb
SO2
0.94ppb
NO2
0.11ppm
CO
AQI 40
Good
2.79μg/m³
PM2.5
17.80μg/m³
PM10
43.23ppb
O3
0.27ppb
SO2
0.91ppb
NO2
0.12ppm
CO
AQI 39
Good
2.67μg/m³
PM2.5
17.93μg/m³
PM10
42.37ppb
O3
0.23ppb
SO2
1.03ppb
NO2
0.11ppm
CO
Air quality and pollutant data for California, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Pasadena, California is updated every hour for accuracy.
In the past 24 hours, the air quality in Pasadena, California was at its worst at 01:00:00 on 2026-03-07.
In the last 24 hours, the best air quality in Pasadena, California was observed at 08:00:00 on 2026-03-07.
As of now, the AQI in Pasadena, California is 40, indicating Good conditions.
Pasadena, California air has the highest levels of O3.
Poor air quality in Pasadena, California means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Pasadena, California are currently 2.757 μg/m3.
The PM10 concentration in Pasadena, California is 18.345 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Pasadena, California is 0.113 ppm.
Currently, Pasadena, California has a sulfur dioxide (SO2) concentration of 0.259 ppb.
The current ozone (O3) level in Pasadena, California at the moment is 42.976 ppm.
Nitrogen dioxide (NO2) level in Pasadena, California at the moment is 1.014 ppb.
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