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

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.27 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
7.58 μg/m³
0
55
155
255
425
605+
39.00 ppb
0
55
71
86
201
201+
0.22 ppb
0
36
76
186
605
1005+
2.96 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Rosemead, California
Rosemead, California
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AQI 32
Good
1.64μg/m³
PM2.5
8.05μg/m³
PM10
34.96ppb
O3
0.23ppb
SO2
5.74ppb
NO2
0.20ppm
CO
AQI 33
Good
1.96μg/m³
PM2.5
9.81μg/m³
PM10
36.26ppb
O3
0.23ppb
SO2
4.36ppb
NO2
0.20ppm
CO
AQI 31
Good
1.28μg/m³
PM2.5
5.82μg/m³
PM10
33.67ppb
O3
0.25ppb
SO2
7.43ppb
NO2
0.21ppm
CO
AQI 31
Good
1.45μg/m³
PM2.5
6.56μg/m³
PM10
34.31ppb
O3
0.25ppb
SO2
6.77ppb
NO2
0.21ppm
CO
AQI 33
Good
1.99μg/m³
PM2.5
9.97μg/m³
PM10
36.42ppb
O3
0.23ppb
SO2
4.22ppb
NO2
0.20ppm
CO
AQI 32
Good
1.69μg/m³
PM2.5
8.32μg/m³
PM10
34.94ppb
O3
0.23ppb
SO2
5.64ppb
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 Rosemead, California is updated every hour for accuracy.
In the past 24 hours, the air quality in Rosemead, California was at its worst at 09:00:00 on 2026-10-21.
In the last 24 hours, the best air quality in Rosemead, California was observed at 02:00:00 on 2026-10-22.
As of now, the AQI in Rosemead, California is 36, indicating Good conditions.
Rosemead, California air has the highest levels of O3.
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 2.265 μg/m3.
The PM10 concentration in Rosemead, California is 7.578 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Rosemead, California is 0.205 ppm.
Currently, Rosemead, California has a sulfur dioxide (SO2) concentration of 0.222 ppb.
The current ozone (O3) level in Rosemead, California at the moment is 38.996 ppm.
Nitrogen dioxide (NO2) level in Rosemead, California at the moment is 2.959 ppb.
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