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)
41
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)
3.40 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
23.14 μg/m³
0
55
155
255
425
605+
Ozone (O3)
44.37 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.67 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
3.51 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
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 42
Good
4.35μg/m³
PM2.5
23.42μg/m³
PM10
45.27ppb
O3
0.67ppb
SO2
3.64ppb
NO2
0.28ppm
CO
Lathrop, California
AQI 44
Good
6.89μg/m³
PM2.5
25.32μg/m³
PM10
47.15ppb
O3
0.66ppb
SO2
4.85ppb
NO2
0.26ppm
CO
Manteca, California
AQI 44
Good
7.26μg/m³
PM2.5
26.80μg/m³
PM10
47.55ppb
O3
0.66ppb
SO2
4.38ppb
NO2
0.27ppm
CO
Discovery Bay, California
AQI 44
Good
7.50μg/m³
PM2.5
36.10μg/m³
PM10
46.40ppb
O3
0.68ppb
SO2
6.13ppb
NO2
0.27ppm
CO
Ripon, California
AQI 46
Good
6.63μg/m³
PM2.5
24.20μg/m³
PM10
49.66ppb
O3
0.65ppb
SO2
4.64ppb
NO2
0.25ppm
CO
Country Club, California
AQI 42
Good
6.89μg/m³
PM2.5
18.54μg/m³
PM10
45.11ppb
O3
0.66ppb
SO2
8.07ppb
NO2
0.23ppm
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 12:00:00 on 2025-10-22.
When did Tracy, California have its best air quality in the last 24 hours?
The best air quality in Tracy, California was recorded at 02:00:00 on 2025-10-21.
What is the real-time air quality index for Tracy, California?
The real-time air quality index in Tracy, California is 41, currently categorized as Good.
Which pollutant is found most often in Tracy, California?
The most common pollutant in Tracy, California is O3.
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 3.405 μg/m3.
What are the current PM10 levels at Tracy, California?
The current PM10 levels in Tracy, California are 23.138 μg/m3.
What are the current carbon monoxide (CO) levels at Tracy, California?
The current carbon monoxide (CO) level in Tracy, California is 0.285 ppm.
What are the current sulfur dioxide (SO2) levels at Tracy, California?
The current sulfur dioxide (SO2) levels in Tracy, California are 0.667 ppb.
What are the current ozone (O3) levels at Tracy, California?
The current ozone (O3) levels at Tracy, California is 44.371 ppm.
What are the current nitrogen dioxide (NO2) levels at Tracy, California?
The current nitrogen dioxide (NO2) levels at Tracy, California is 3.512 ppb.
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