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)
44
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)
5.00 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
27.00 μg/m³
0
55
155
255
425
605+
Ozone (O3)
46.99 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.52 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
1.50 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Modesto, California
Modesto, California
Scroll To Air Quality Map
Track live Modesto, California air quality forecast and history
Modesto Loading...
Modesto, California air quality map: Real-time AQI near you
Air quality in nearby cities
Ceres, California
AQI 41
Good
6.60μg/m³
PM2.5
26.23μg/m³
PM10
43.77ppb
O3
0.58ppb
SO2
1.55ppb
NO2
0.18ppm
CO
Salida, California
AQI 40
Good
6.95μg/m³
PM2.5
26.68μg/m³
PM10
42.61ppb
O3
0.59ppb
SO2
1.40ppb
NO2
0.18ppm
CO
Riverbank, California
AQI 40
Good
6.70μg/m³
PM2.5
26.19μg/m³
PM10
43.30ppb
O3
0.58ppb
SO2
1.50ppb
NO2
0.18ppm
CO
Ripon, California
AQI 38
Good
7.32μg/m³
PM2.5
27.21μg/m³
PM10
41.26ppb
O3
0.60ppb
SO2
1.22ppb
NO2
0.18ppm
CO
Oakdale, California
AQI 39
Good
6.85μg/m³
PM2.5
24.98μg/m³
PM10
41.91ppb
O3
0.62ppb
SO2
1.39ppb
NO2
0.18ppm
CO
Turlock, California
AQI 52
Moderate
9.68μg/m³
PM2.5
28.00μg/m³
PM10
44.00ppb
O3
0.62ppb
SO2
2.00ppb
NO2
0.16ppm
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 01:00:00 on 2026-07-25.
When did Modesto, California have its best air quality in the last 24 hours?
The best air quality in Modesto, California was recorded at 09:00:00 on 2026-07-25.
What is the real-time air quality index for Modesto, California?
The real-time air quality index in Modesto, California is 44, 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 5.005 μg/m3.
What are the current PM10 levels at Modesto, California?
The current PM10 levels in Modesto, California are 27.004 μg/m3.
What are the current carbon monoxide (CO) levels at Modesto, California?
The current carbon monoxide (CO) level in Modesto, California is 0.182 ppm.
What are the current sulfur dioxide (SO2) levels at Modesto, California?
The current sulfur dioxide (SO2) levels in Modesto, California are 0.521 ppb.
What are the current ozone (O3) levels at Modesto, California?
The current ozone (O3) levels at Modesto, California is 46.991 ppm.
What are the current nitrogen dioxide (NO2) levels at Modesto, California?
The current nitrogen dioxide (NO2) levels at Modesto, California is 1.497 ppb.
All Rights Reserved © Ambee Inc. 2025