Real-time air quality index in Modesto, California today
Stay updated with real-time air quality in Modesto, 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)
19
Good
Modesto, California
Last updated: ... (Local time)
Common air pollutants in Modesto, California
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
1.40 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
6.00 μg/m³
0
55
155
255
425
605+
Ozone (O3)
20.00 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.60 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
1.91 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Modesto, California
Modesto, California
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Modesto, California air quality map: Real-time AQI near you
Air quality in nearby cities
Ceres, California
AQI 18
Good
1.65μg/m³
PM2.5
6.32μg/m³
PM10
18.74ppb
O3
0.52ppb
SO2
2.00ppb
NO2
0.24ppm
CO
Salida, California
AQI 17
Good
1.72μg/m³
PM2.5
6.67μg/m³
PM10
17.98ppb
O3
0.54ppb
SO2
1.81ppb
NO2
0.24ppm
CO
Riverbank, California
AQI 17
Good
1.70μg/m³
PM2.5
6.49μg/m³
PM10
18.44ppb
O3
0.53ppb
SO2
1.94ppb
NO2
0.24ppm
CO
Ripon, California
AQI 16
Good
1.82μg/m³
PM2.5
7.04μg/m³
PM10
17.26ppb
O3
0.56ppb
SO2
1.66ppb
NO2
0.24ppm
CO
Oakdale, California
AQI 15
Good
1.94μg/m³
PM2.5
7.66μg/m³
PM10
16.27ppb
O3
0.61ppb
SO2
1.82ppb
NO2
0.24ppm
CO
Turlock, California
AQI 17
Good
3.19μg/m³
PM2.5
8.01μg/m³
PM10
18.00ppb
O3
0.59ppb
SO2
2.60ppb
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 Modesto, California updated?
Air quality data for Modesto, California is updated on an hourly basis.
When did Modesto, California experience the worst air quality in the last 24 hours?
The worst air quality in Modesto, California was recorded at 11:00:00 on 2026-06-08.
When did Modesto, California have its best air quality in the last 24 hours?
The best air quality in Modesto, California was recorded at 05:00:00 on 2026-06-09.
What is the real-time air quality index for Modesto, California?
The real-time air quality index in Modesto, California is 19, currently categorized as Good.
Which pollutant is found most often in Modesto, California?
The most common pollutant in Modesto, California is O3.
What can I do if the air quality in Modesto, California is poor?
If the air quality in Modesto, California is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Modesto, California?
The measured PM2.5 levels in Modesto, California at present are 1.402 μg/m3.
What are the current PM10 levels at Modesto, California?
The current PM10 levels in Modesto, California are 6.001 μg/m3.
What are the current carbon monoxide (CO) levels at Modesto, California?
The current carbon monoxide (CO) level in Modesto, California is 0.238 ppm.
What are the current sulfur dioxide (SO2) levels at Modesto, California?
The current sulfur dioxide (SO2) levels in Modesto, California are 0.602 ppb.
What are the current ozone (O3) levels at Modesto, California?
The current ozone (O3) levels at Modesto, California is 19.997 ppm.
What are the current nitrogen dioxide (NO2) levels at Modesto, California?
The current nitrogen dioxide (NO2) levels at Modesto, California is 1.912 ppb.
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