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

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.54 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.84 μg/m³
0
55
155
255
425
605+
23.77 ppb
0
55
71
86
201
201+
0.41 ppb
0
36
76
186
605
1005+
4.25 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Rosemont, California
Rosemont, California
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AQI 33
Good
5.54μg/m³
PM2.5
21.84μg/m³
PM10
23.77ppb
O3
0.41ppb
SO2
4.25ppb
NO2
0.12ppm
CO
AQI 33
Good
6.25μg/m³
PM2.5
27.57μg/m³
PM10
23.98ppb
O3
0.41ppb
SO2
4.38ppb
NO2
0.13ppm
CO
AQI 27
Good
5.10μg/m³
PM2.5
16.29μg/m³
PM10
22.89ppb
O3
0.41ppb
SO2
3.99ppb
NO2
0.12ppm
CO
AQI 27
Good
4.87μg/m³
PM2.5
18.59μg/m³
PM10
25.63ppb
O3
0.42ppb
SO2
3.49ppb
NO2
0.13ppm
CO
AQI 33
Good
5.77μg/m³
PM2.5
23.64μg/m³
PM10
24.86ppb
O3
0.42ppb
SO2
3.89ppb
NO2
0.13ppm
CO
AQI 27
Good
5.18μg/m³
PM2.5
15.39μg/m³
PM10
22.55ppb
O3
0.41ppb
SO2
4.05ppb
NO2
0.12ppm
CO
The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Rosemont, California are available every hour.
Rosemont, California experienced its worst air quality at 02:00:00, 2026-08-17.
The best air quality in Rosemont, California was observed at 02:00:00 on 2026-08-16.
The air quality in Rosemont, California right now is Good, with an AQI of 33.
In Rosemont, California, PM2.5 is the most frequently found pollutant.
When air quality in Rosemont, California is compromised, staying indoors and wearing a mask can reduce health risks.
Rosemont, California currently has a PM2.5 concentration of 5.541 μg/m3.
Rosemont, California currently has a PM10 concentration of 21.844 μg/m3.
The current carbon monoxide (CO) level in Rosemont, California is 0.123 ppm.
The current sulfur dioxide (SO2) concentration in Rosemont, California is 0.415 ppb.
Rosemont, California currently has an ozone (O3) concentration of 23.766 ppm.
The current level of nitrogen dioxide (NO2) in Rosemont, California is 4.251 ppb.
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