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Live air quality index in Centennial, Colorado today

Stay updated with real-time air quality in Centennial, Colorado 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)

27

Good

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Centennial, Colorado

Last updated: ... (Local time)

Major air pollutants in Centennial, Colorado

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter2.5 (PM2.5)

4.33 μg/m³

0

12.1

35.5

55.5

250.5

500.5+

Particulate Matter10 (PM10)

11.98 μg/m³

0

55

155

255

425

605+

Ozone (O3)

29.36 ppb

0

55

71

86

201

201+

Sulfur Dioxide (SO2)

0.47 ppb

0

36

76

186

605

1005+

Nitrogen Dioxide (NO2)

13.60 ppb

0

54

101

361

1250

2050+

Carbon Monoxide (CO)

0.27 ppm

0

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

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Centennial, Colorado

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Centennial, Colorado air quality map: Track AQI near you




How accurate is Colorado, USA air quality data?

Air quality data and pollutant measurements for Colorado, 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 Centennial, Colorado updated?

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The air quality for Centennial, Colorado is updated every hour.


When was the worst air quality at Centennial, Colorado in the last 24 hrs?

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The worst air quality in Centennial, Colorado in the last 24 hours was observed at 07:00:00 on 2025-06-05.


When was the best air quality at Centennial, Colorado in the last 24 hrs?

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In the last 24 hrs, the best air quality in Centennial, Colorado was observed at 08:00:00 on 2025-06-05.


What is the current air quality in Centennial, Colorado?

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The current air quality in Centennial, Colorado is 27, categorized as Good based on real-time data.


What pollutant is the most common in Centennial, Colorado?

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The most common pollutant in Centennial, Colorado is O3.


What should I do if the air quality in Centennial, Colorado is poor?

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If the air quality in Centennial, Colorado is poor, consider staying indoors and wearing a mask to protect yourself.


What is the current concentration of PM2.5 in Centennial, Colorado?

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The current PM2.5 concentration at Centennial, Colorado is 4.328 μg/m3.


What is the current concentration of PM10 in Centennial, Colorado?

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The current PM10 concentration at Centennial, Colorado is 11.982 μg/m3.


What is the current concentration of carbon monoxide (CO) in Centennial, Colorado?

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The current carbon monoxide (CO) concentration at Centennial, Colorado is 0.266 ppm.


What is the current concentration of sulfur dioxide (SO2) in Centennial, Colorado?

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The current sulfur dioxide (SO2) concentration at Centennial, Colorado is 0.472 ppb.


What is the current concentration of ozone (O3) in Centennial, Colorado?

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The current ozone (O3) concentration at Centennial, Colorado is 29.362 ppm.


What is the current concentration of nitrogen dioxide (NO2) in Centennial, Colorado?

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The current nitrogen dioxide (NO2) concentration at Centennial, Colorado is 13.602 ppb.


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