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Live air quality index in Rancho Cucamonga, California today

Stay updated with real-time air quality in Rancho Cucamonga, 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)

52

Moderate

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Rancho Cucamonga, California

Last updated: ... (Local time)

Major air pollutants in Rancho Cucamonga, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter2.5 (PM2.5)

10.24 μg/m³

0

12.1

35.5

55.5

250.5

500.5+

Particulate Matter10 (PM10)

28.96 μg/m³

0

55

155

255

425

605+

Ozone (O3)

29.05 ppb

0

55

71

86

201

201+

Sulfur Dioxide (SO2)

0.37 ppb

0

36

76

186

605

1005+

Nitrogen Dioxide (NO2)

11.05 ppb

0

54

101

361

1250

2050+

Carbon Monoxide (CO)

0.16 ppm

0

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

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Rancho Cucamonga, California

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Rancho Cucamonga, California air quality map: Real-time AQI near you




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.


Frequently asked questions

How frequently is the air quality data for Rancho Cucamonga, California updated?

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Air quality data for Rancho Cucamonga, California is updated on an hourly basis.


When did Rancho Cucamonga, California experience the worst air quality in the last 24 hours?

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The worst air quality in Rancho Cucamonga, California was recorded at 09:00:00 on 2025-06-06.


When did Rancho Cucamonga, California have its best air quality in the last 24 hours?

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The best air quality in Rancho Cucamonga, California was recorded at 09:00:00 on 2025-06-06.


What is the real-time air quality index for Rancho Cucamonga, California?

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The real-time air quality index in Rancho Cucamonga, California is 52, currently categorized as Moderate.


Which pollutant is found most often in Rancho Cucamonga, California?

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The most common pollutant in Rancho Cucamonga, California is PM2.5.


What can I do if the air quality in Rancho Cucamonga, California is poor?

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If the air quality in Rancho Cucamonga, California is poor, limit outdoor activities and use a mask to safeguard your health.


What are the current PM2.5 levels in Rancho Cucamonga, California?

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The measured PM2.5 levels in Rancho Cucamonga, California at present are 10.238 μg/m3.


What are the current PM10 levels at Rancho Cucamonga, California?

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The current PM10 levels in Rancho Cucamonga, California are 28.958 μg/m3.


What are the current carbon monoxide (CO) levels at Rancho Cucamonga, California?

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The current carbon monoxide (CO) level in Rancho Cucamonga, California is 0.159 ppm.


What are the current sulfur dioxide (SO2) levels at Rancho Cucamonga, California?

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The current sulfur dioxide (SO2) levels in Rancho Cucamonga, California are 0.368 ppb.


What are the current ozone (O3) levels at Rancho Cucamonga, California?

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The current ozone (O3) levels at Rancho Cucamonga, California is 29.05 ppm.


What are the current nitrogen dioxide (NO2) levels at Rancho Cucamonga, California?

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The current nitrogen dioxide (NO2) levels at Rancho Cucamonga, California is 11.054 ppb.


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