Real-time air quality index in Fresno, California today
Stay updated with real-time air quality in Fresno, 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)
45
Good
Fresno, California
Last updated: ... (Local time)
Common air pollutants in Fresno, California
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
3.55 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
15.82 μg/m³
0
55
155
255
425
605+
Ozone (O3)
49.26 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.68 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
9.23 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Fresno, California
Fresno, California
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Fresno, California air quality map: Real-time AQI near you
Air quality in nearby cities
Clovis, California
AQI 47
Good
4.71μg/m³
PM2.5
11.93μg/m³
PM10
50.92ppb
O3
0.65ppb
SO2
2.51ppb
NO2
0.10ppm
CO
Sanger, California
AQI 43
Good
2.83μg/m³
PM2.5
12.13μg/m³
PM10
46.48ppb
O3
0.62ppb
SO2
2.59ppb
NO2
0.11ppm
CO
Selma, California
AQI 46
Good
2.79μg/m³
PM2.5
25.70μg/m³
PM10
50.29ppb
O3
0.62ppb
SO2
3.25ppb
NO2
0.12ppm
CO
Kerman, California
AQI 46
Good
3.86μg/m³
PM2.5
22.20μg/m³
PM10
50.06ppb
O3
0.62ppb
SO2
2.57ppb
NO2
0.12ppm
CO
Parlier, California
AQI 45
Good
2.61μg/m³
PM2.5
19.88μg/m³
PM10
49.14ppb
O3
0.61ppb
SO2
4.27ppb
NO2
0.12ppm
CO
Kingsburg, California
AQI 46
Good
2.52μg/m³
PM2.5
19.01μg/m³
PM10
49.77ppb
O3
0.61ppb
SO2
3.79ppb
NO2
0.12ppm
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 Fresno, California updated?
Air quality data for Fresno, California is updated on an hourly basis.
When did Fresno, California experience the worst air quality in the last 24 hours?
The worst air quality in Fresno, California was recorded at 07:00:00 on 2026-04-24.
When did Fresno, California have its best air quality in the last 24 hours?
The best air quality in Fresno, California was recorded at 10:00:00 on 2026-04-24.
What is the real-time air quality index for Fresno, California?
The real-time air quality index in Fresno, California is 46, currently categorized as Good.
Which pollutant is found most often in Fresno, California?
The most common pollutant in Fresno, California is O3.
What can I do if the air quality in Fresno, California is poor?
If the air quality in Fresno, California is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Fresno, California?
The measured PM2.5 levels in Fresno, California at present are 2.962 μg/m3.
What are the current PM10 levels at Fresno, California?
The current PM10 levels in Fresno, California are 13.228 μg/m3.
What are the current carbon monoxide (CO) levels at Fresno, California?
The current carbon monoxide (CO) level in Fresno, California is 0.104 ppm.
What are the current sulfur dioxide (SO2) levels at Fresno, California?
The current sulfur dioxide (SO2) levels in Fresno, California are 0.677 ppb.
What are the current ozone (O3) levels at Fresno, California?
The current ozone (O3) levels at Fresno, California is 50.021 ppm.
What are the current nitrogen dioxide (NO2) levels at Fresno, California?
The current nitrogen dioxide (NO2) levels at Fresno, California is 3.201 ppb.
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