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Live air quality index in San Dimas, California today

Stay updated with real-time air quality in San Dimas, 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)

64

Moderate

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San Dimas, California

Last updated: ... (Local time)

Major air pollutants in San Dimas, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter2.5 (PM2.5)

16.15 μg/m³

0

12.1

35.5

55.5

250.5

500.5+

Particulate Matter10 (PM10)

47.85 μg/m³

0

55

155

255

425

605+

Ozone (O3)

55.09 ppb

0

55

71

86

201

201+

Sulfur Dioxide (SO2)

0.44 ppb

0

36

76

186

605

1005+

Nitrogen Dioxide (NO2)

10.19 ppb

0

54

101

361

1250

2050+

Carbon Monoxide (CO)

0.30 ppm

0

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

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San Dimas, California

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San Dimas, California air quality map: Track AQI near you




How accurate is California, USA air quality data?

Air quality data and pollutant measurements for California, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.


Frequently asked questions

How often is the air quality data for San Dimas, California updated?

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The air quality for San Dimas, California is updated every hour.


When was the worst air quality at San Dimas, California in the last 24 hrs?

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The worst air quality in San Dimas, California in the last 24 hours was observed at 10:00:00 on 2025-06-06.


When was the best air quality at San Dimas, California in the last 24 hrs?

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In the last 24 hrs, the best air quality in San Dimas, California was observed at 03:00:00 on 2025-06-06.


What is the current air quality in San Dimas, California?

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The current air quality in San Dimas, California is 64, categorized as Moderate based on real-time data.


What pollutant is the most common in San Dimas, California?

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The most common pollutant in San Dimas, California is PM2.5.


What should I do if the air quality in San Dimas, California is poor?

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If the air quality in San Dimas, California is poor, consider staying indoors and wearing a mask to protect yourself.


What is the current concentration of PM2.5 in San Dimas, California?

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The current PM2.5 concentration at San Dimas, California is 16.151 μg/m3.


What is the current concentration of PM10 in San Dimas, California?

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The current PM10 concentration at San Dimas, California is 47.851 μg/m3.


What is the current concentration of carbon monoxide (CO) in San Dimas, California?

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The current carbon monoxide (CO) concentration at San Dimas, California is 0.296 ppm.


What is the current concentration of sulfur dioxide (SO2) in San Dimas, California?

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The current sulfur dioxide (SO2) concentration at San Dimas, California is 0.44 ppb.


What is the current concentration of ozone (O3) in San Dimas, California?

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The current ozone (O3) concentration at San Dimas, California is 55.087 ppm.


What is the current concentration of nitrogen dioxide (NO2) in San Dimas, California?

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The current nitrogen dioxide (NO2) concentration at San Dimas, California is 10.191 ppb.


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