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)
36
Good
Pasadena, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.16 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
5.72 μg/m³
0
55
155
255
425
605+
38.97 ppb
0
55
71
86
201
201+
0.21 ppb
0
36
76
186
605
1005+
3.57 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Pasadena, California
Pasadena, California
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AQI 36
Good
2.11μg/m³
PM2.5
5.93μg/m³
PM10
38.94ppb
O3
0.21ppb
SO2
3.42ppb
NO2
0.20ppm
CO
AQI 36
Good
2.17μg/m³
PM2.5
5.80μg/m³
PM10
38.99ppb
O3
0.22ppb
SO2
3.55ppb
NO2
0.20ppm
CO
AQI 36
Good
2.11μg/m³
PM2.5
6.27μg/m³
PM10
38.97ppb
O3
0.21ppb
SO2
3.28ppb
NO2
0.20ppm
CO
AQI 36
Good
2.15μg/m³
PM2.5
6.47μg/m³
PM10
38.98ppb
O3
0.21ppb
SO2
3.26ppb
NO2
0.20ppm
CO
AQI 36
Good
2.17μg/m³
PM2.5
6.39μg/m³
PM10
38.98ppb
O3
0.21ppb
SO2
3.31ppb
NO2
0.20ppm
CO
AQI 36
Good
1.67μg/m³
PM2.5
5.63μg/m³
PM10
39.36ppb
O3
0.19ppb
SO2
2.75ppb
NO2
0.20ppm
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 09:00:00 on 2026-10-22.
In the last 24 hours, the best air quality in Pasadena, California was observed at 03:00:00 on 2026-10-22.
As of now, the AQI in Pasadena, California is 36, 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 2.158 μg/m3.
The PM10 concentration in Pasadena, California is 5.72 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Pasadena, California is 0.201 ppm.
Currently, Pasadena, California has a sulfur dioxide (SO2) concentration of 0.215 ppb.
The current ozone (O3) level in Pasadena, California at the moment is 38.969 ppm.
Nitrogen dioxide (NO2) level in Pasadena, California at the moment is 3.569 ppb.
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