Stay updated with real-time air quality in Rosemead, 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)
33
Good
Rosemead, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.63 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.95 μg/m³
0
55
155
255
425
605+
33.29 ppb
0
55
71
86
201
201+
0.77 ppb
0
36
76
186
605
1005+
18.65 ppb
0
54
101
361
1250
2050+
0.34 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Very high
Rosemead, California
Rosemead, California
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AQI 33
Good
5.51μg/m³
PM2.5
23.21μg/m³
PM10
33.65ppb
O3
0.76ppb
SO2
16.91ppb
NO2
0.33ppm
CO
AQI 31
Good
5.19μg/m³
PM2.5
21.91μg/m³
PM10
34.07ppb
O3
0.75ppb
SO2
12.09ppb
NO2
0.31ppm
CO
AQI 33
Good
5.88μg/m³
PM2.5
25.81μg/m³
PM10
32.51ppb
O3
0.78ppb
SO2
22.89ppb
NO2
0.35ppm
CO
AQI 33
Good
5.68μg/m³
PM2.5
25.07μg/m³
PM10
33.47ppb
O3
0.78ppb
SO2
20.16ppb
NO2
0.36ppm
CO
AQI 31
Good
5.16μg/m³
PM2.5
21.80μg/m³
PM10
34.38ppb
O3
0.75ppb
SO2
11.34ppb
NO2
0.31ppm
CO
AQI 33
Good
5.57μg/m³
PM2.5
22.86μg/m³
PM10
33.17ppb
O3
0.75ppb
SO2
17.94ppb
NO2
0.32ppm
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 Rosemead, California is updated every hour for accuracy.
In the past 24 hours, the air quality in Rosemead, California was at its worst at 12:00:00 on 2026-04-24.
In the last 24 hours, the best air quality in Rosemead, California was observed at 03:00:00 on 2026-04-23.
As of now, the AQI in Rosemead, California is 33, indicating Good conditions.
Rosemead, California air has the highest levels of PM2.5.
Poor air quality in Rosemead, California means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Rosemead, California are currently 5.627 μg/m3.
The PM10 concentration in Rosemead, California is 23.955 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Rosemead, California is 0.338 ppm.
Currently, Rosemead, California has a sulfur dioxide (SO2) concentration of 0.766 ppb.
The current ozone (O3) level in Rosemead, California at the moment is 33.292 ppm.
Nitrogen dioxide (NO2) level in Rosemead, California at the moment is 18.649 ppb.
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