Real-time air quality index in Tracy, California today
Stay updated with real-time air quality in Tracy, 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)
21
Good
Tracy, California
Last updated: ... (Local time)
Common air pollutants in Tracy, California
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
1.08 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
22.72 μg/m³
0
55
155
255
425
605+
Ozone (O3)
10.46 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.90 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
6.51 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Tracy, California
Tracy, California
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Tracy, California air quality map: Real-time AQI near you
Air quality in nearby cities
Mountain House, California
AQI 23
Good
4.42μg/m³
PM2.5
14.95μg/m³
PM10
25.33ppb
O3
1.00ppb
SO2
3.07ppb
NO2
0.24ppm
CO
Lathrop, California
AQI 25
Good
3.75μg/m³
PM2.5
16.84μg/m³
PM10
27.27ppb
O3
0.91ppb
SO2
3.87ppb
NO2
0.21ppm
CO
Manteca, California
AQI 26
Good
3.16μg/m³
PM2.5
17.00μg/m³
PM10
27.78ppb
O3
0.88ppb
SO2
3.94ppb
NO2
0.21ppm
CO
Discovery Bay, California
AQI 28
Good
4.62μg/m³
PM2.5
25.96μg/m³
PM10
30.14ppb
O3
1.16ppb
SO2
3.85ppb
NO2
0.28ppm
CO
Ripon, California
AQI 25
Good
3.90μg/m³
PM2.5
17.60μg/m³
PM10
27.11ppb
O3
0.86ppb
SO2
3.99ppb
NO2
0.18ppm
CO
Country Club, California
AQI 33
Good
5.66μg/m³
PM2.5
15.17μg/m³
PM10
26.07ppb
O3
0.94ppb
SO2
3.95ppb
NO2
0.22ppm
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 Tracy, California updated?
Air quality data for Tracy, California is updated on an hourly basis.
When did Tracy, California experience the worst air quality in the last 24 hours?
The worst air quality in Tracy, California was recorded at 09:00:00 on 2025-07-23.
When did Tracy, California have its best air quality in the last 24 hours?
The best air quality in Tracy, California was recorded at 03:00:00 on 2025-07-24.
What is the real-time air quality index for Tracy, California?
The real-time air quality index in Tracy, California is 27, currently categorized as Good.
Which pollutant is found most often in Tracy, California?
The most common pollutant in Tracy, California is PM2.5.
What can I do if the air quality in Tracy, California is poor?
If the air quality in Tracy, California is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Tracy, California?
The measured PM2.5 levels in Tracy, California at present are 5.243 μg/m3.
What are the current PM10 levels at Tracy, California?
The current PM10 levels in Tracy, California are 16.652 μg/m3.
What are the current carbon monoxide (CO) levels at Tracy, California?
The current carbon monoxide (CO) level in Tracy, California is 0.227 ppm.
What are the current sulfur dioxide (SO2) levels at Tracy, California?
The current sulfur dioxide (SO2) levels in Tracy, California are 0.901 ppb.
What are the current ozone (O3) levels at Tracy, California?
The current ozone (O3) levels at Tracy, California is 25.191 ppm.
What are the current nitrogen dioxide (NO2) levels at Tracy, California?
The current nitrogen dioxide (NO2) levels at Tracy, California is 3.149 ppb.
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