Real-time air quality index in Orange, California today
Stay updated with real-time air quality in Orange, 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)
56
Moderate
Orange, California
Last updated: ... (Local time)
Common air pollutants in Orange, California
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
11.84 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
38.82 μg/m³
0
55
155
255
425
605+
Ozone (O3)
2.57 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.63 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
12.65 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.64 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Orange, California
Orange, California
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Orange, California air quality map: Real-time AQI near you
Air quality in nearby cities
Santa Ana, California
AQI 56
Moderate
11.92μg/m³
PM2.5
38.45μg/m³
PM10
2.67ppb
O3
0.62ppb
SO2
12.88ppb
NO2
0.64ppm
CO
Tustin, California
AQI 54
Moderate
10.64μg/m³
PM2.5
33.80μg/m³
PM10
2.47ppb
O3
0.63ppb
SO2
12.38ppb
NO2
0.61ppm
CO
North Tustin, California
AQI 38
Good
7.15μg/m³
PM2.5
34.62μg/m³
PM10
2.32ppb
O3
0.68ppb
SO2
11.86ppb
NO2
0.56ppm
CO
Anaheim, California
AQI 60
Moderate
14.09μg/m³
PM2.5
45.75μg/m³
PM10
2.82ppb
O3
0.62ppb
SO2
13.53ppb
NO2
0.67ppm
CO
Garden Grove, California
AQI 54
Moderate
11.49μg/m³
PM2.5
37.62μg/m³
PM10
2.54ppb
O3
0.61ppb
SO2
13.01ppb
NO2
0.65ppm
CO
Placentia, California
AQI 52
Moderate
10.42μg/m³
PM2.5
35.26μg/m³
PM10
2.63ppb
O3
0.62ppb
SO2
11.84ppb
NO2
0.62ppm
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 Orange, California updated?
Air quality data for Orange, California is updated on an hourly basis.
When did Orange, California experience the worst air quality in the last 24 hours?
The worst air quality in Orange, California was recorded at 12:00:00 on 2026-09-07.
When did Orange, California have its best air quality in the last 24 hours?
The best air quality in Orange, California was recorded at 11:00:00 on 2026-09-06.
What is the real-time air quality index for Orange, California?
The real-time air quality index in Orange, California is 56, currently categorized as Moderate.
Which pollutant is found most often in Orange, California?
The most common pollutant in Orange, California is PM2.5.
What can I do if the air quality in Orange, California is poor?
If the air quality in Orange, California is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Orange, California?
The measured PM2.5 levels in Orange, California at present are 11.835 μg/m3.
What are the current PM10 levels at Orange, California?
The current PM10 levels in Orange, California are 38.819 μg/m3.
What are the current carbon monoxide (CO) levels at Orange, California?
The current carbon monoxide (CO) level in Orange, California is 0.636 ppm.
What are the current sulfur dioxide (SO2) levels at Orange, California?
The current sulfur dioxide (SO2) levels in Orange, California are 0.625 ppb.
What are the current ozone (O3) levels at Orange, California?
The current ozone (O3) levels at Orange, California is 2.571 ppm.
What are the current nitrogen dioxide (NO2) levels at Orange, California?
The current nitrogen dioxide (NO2) levels at Orange, California is 12.649 ppb.
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