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)
35
Good
Rosemead, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.89 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.22 μg/m³
0
55
155
255
425
605+
37.65 ppb
0
55
71
86
201
201+
0.41 ppb
0
36
76
186
605
1005+
4.58 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Rosemead, California
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AQI 35
Good
3.96μg/m³
PM2.5
16.33μg/m³
PM10
38.12ppb
O3
0.41ppb
SO2
4.28ppb
NO2
0.22ppm
CO
AQI 36
Good
4.00μg/m³
PM2.5
16.31μg/m³
PM10
39.35ppb
O3
0.39ppb
SO2
3.25ppb
NO2
0.20ppm
CO
AQI 34
Good
3.73μg/m³
PM2.5
16.16μg/m³
PM10
36.52ppb
O3
0.44ppb
SO2
5.39ppb
NO2
0.23ppm
CO
AQI 34
Good
3.74μg/m³
PM2.5
16.81μg/m³
PM10
37.22ppb
O3
0.45ppb
SO2
5.07ppb
NO2
0.24ppm
CO
AQI 37
Good
3.99μg/m³
PM2.5
16.42μg/m³
PM10
39.60ppb
O3
0.39ppb
SO2
3.16ppb
NO2
0.20ppm
CO
AQI 35
Good
4.06μg/m³
PM2.5
15.97μg/m³
PM10
37.77ppb
O3
0.38ppb
SO2
4.35ppb
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 05:00:00 on 2026-03-09.
In the last 24 hours, the best air quality in Rosemead, California was observed at 01:00:00 on 2026-03-09.
As of now, the AQI in Rosemead, California is 35, 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 3.894 μg/m3.
The PM10 concentration in Rosemead, California is 16.219 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Rosemead, California is 0.22 ppm.
Currently, Rosemead, California has a sulfur dioxide (SO2) concentration of 0.413 ppb.
The current ozone (O3) level in Rosemead, California at the moment is 37.654 ppm.
Nitrogen dioxide (NO2) level in Rosemead, California at the moment is 4.585 ppb.
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