Real-time air quality index in Duarte, California today
Stay updated with real-time air quality in Duarte, 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)
44
Good
Duarte, California
Last updated: ... (Local time)
Common air pollutants in Duarte, California
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
8.30 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
28.46 μg/m³
0
55
155
255
425
605+
Ozone (O3)
42.19 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.50 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
7.20 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Duarte, California
Duarte, California
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Duarte, California air quality map: Real-time AQI near you
Air quality in nearby cities
Monrovia, California
AQI 52
Moderate
10.08μg/m³
PM2.5
33.64μg/m³
PM10
51.90ppb
O3
0.31ppb
SO2
5.40ppb
NO2
0.18ppm
CO
Arcadia, California
AQI 42
Good
7.10μg/m³
PM2.5
25.57μg/m³
PM10
44.90ppb
O3
0.31ppb
SO2
6.69ppb
NO2
0.19ppm
CO
Baldwin Park, California
AQI 47
Good
8.46μg/m³
PM2.5
30.80μg/m³
PM10
50.56ppb
O3
0.31ppb
SO2
4.58ppb
NO2
0.18ppm
CO
Azusa, California
AQI 49
Good
9.13μg/m³
PM2.5
28.53μg/m³
PM10
52.65ppb
O3
0.30ppb
SO2
4.98ppb
NO2
0.19ppm
CO
Vincent, California
AQI 49
Good
8.60μg/m³
PM2.5
28.14μg/m³
PM10
51.17ppb
O3
0.30ppb
SO2
4.99ppb
NO2
0.19ppm
CO
Sierra Madre, California
AQI 42
Good
7.13μg/m³
PM2.5
25.86μg/m³
PM10
44.57ppb
O3
0.31ppb
SO2
6.99ppb
NO2
0.19ppm
CO
How accurate is California, USA air quality data?
Air quality measurements for California, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Frequently asked questions
How frequently is the air quality data for Duarte, California updated?
Air quality data for Duarte, California is updated on an hourly basis.
When did Duarte, California experience the worst air quality in the last 24 hours?
The worst air quality in Duarte, California was recorded at 12:00:00 on 2025-07-22.
When did Duarte, California have its best air quality in the last 24 hours?
The best air quality in Duarte, California was recorded at 03:00:00 on 2025-07-21.
What is the real-time air quality index for Duarte, California?
The real-time air quality index in Duarte, California is 45, currently categorized as Good.
Which pollutant is found most often in Duarte, California?
The most common pollutant in Duarte, California is O3.
What can I do if the air quality in Duarte, California is poor?
If the air quality in Duarte, California is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Duarte, California?
The measured PM2.5 levels in Duarte, California at present are 7.762 μg/m3.
What are the current PM10 levels at Duarte, California?
The current PM10 levels in Duarte, California are 32.111 μg/m3.
What are the current carbon monoxide (CO) levels at Duarte, California?
The current carbon monoxide (CO) level in Duarte, California is 0.183 ppm.
What are the current sulfur dioxide (SO2) levels at Duarte, California?
The current sulfur dioxide (SO2) levels in Duarte, California are 0.356 ppb.
What are the current ozone (O3) levels at Duarte, California?
The current ozone (O3) levels at Duarte, California is 49.168 ppm.
What are the current nitrogen dioxide (NO2) levels at Duarte, California?
The current nitrogen dioxide (NO2) levels at Duarte, California is 4.422 ppb.
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