AQI

Centennial Air Quality Index & Realtime Air Pollution

Live AQI
60(AQI-US)
Air Quality is
Moderate
PM2.5 :6.6µg/m³
PM10 :9.7µg/m³
Good
Moderate
Poor
Unhealthy
Severe
Hazardous
050100150200300301+
Moderate air quality mascot

Primary Air Pollutants Centennial (Colorado)

PM2.57µg/m³
PM2.5
Fine particles
PM1010µg/m³
PM10
Coarse particles
SO₂1µg/m³
SO₂
Sulphur dioxide
CO137µg/m³
CO
Carbon monoxide
NO₂3µg/m³
NO₂
Nitrogen dioxide
O₃129µg/m³
O₃
Ozone

Hourly forecast Centennial (Colorado)

Now23°
Overcast
19:0022°
Overcast
20:0019°
Overcast
21:0018°
Clear sky
22:0017°
Overcast
23:0017°
Overcast
00:0017°
Overcast
01:0015°
Mostly clear
02:0015°
Mostly clear
03:0015°
Clear sky
04:0015°
Clear sky
05:0014°
Clear sky
06:0013°
Clear sky
07:0015°
Clear sky
08:0021°
Clear sky
09:0025°
Overcast
10:0028°
Overcast
11:0030°
Overcast
12:0031°
Overcast
13:0030°
Overcast
14:0030°
Overcast
15:0031°
Partly cloudy
16:0029°
Overcast
17:0027°
Mostly clear

Health Recommendations for Centennial Residents

Based on current air quality: Moderate · AQI 60

Moderate
Air Purifier
Air PurifierTurn On
Car Filter
Car FilterMust
N95 Mask
N95 MaskMust
Stay Indoor
Stay IndoorMust

UV Index

1.15

Low

Safe to be outside. Minimal UV risk.

Wind

10.7 km/h

Light breeze — leaves rustling gently.

AQI Graph

Historical AQI Data Centennial (Colorado)

36
Min. AQIat 8:00 AM on 3rd Jun
73
Max. AQIat 8:00 PM on 3rd Jun
03-06-2026Time04-06-2026

United States Major Cities AQI Overview


Most Polluted Cities by AQI United States

119
Poor3x above Standard
93
Moderate2x above Standard
81
Moderate2x above Standard
79
Moderate1x above Standard
75
Moderate1x above Standard
75
Moderate3x above Standard
75
Moderate3x above Standard
73
Moderate2x above Standard
72
Moderate1x above Standard
67
Moderate1x above Standard
Last Updated: 03 Jun 2026, 22:43

Health Advice For People Living in Centennial

0.3
Cigarettes
per day
Weekly2.1 Cigarettes
Monthly9 Cigarettes

Breathing the air in this location is equivalent to smoking 0.3 cigarettes a day.

Disclaimer: This cigarette-equivalent estimate is calculated using the average PM2.5 concentration from the past 24 hours, assuming constant exposure throughout that period.
Solutions for Centennial Current AQI (US)
Air Purifier
Air PurifierTurn On
Car Filter
Car FilterMust
N95 Mask
N95 MaskMust
Stay Indoor
Stay IndoorMust
Must turn on the air purifier to enjoy fresh air.Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Centennial · Current air quality: Moderate · AQI 60

Mild Trigger Risk

Headaches

Risk of Headaches symptoms is Mild when AQI of Centennial is Moderate (51-100).

Common signs

Typical signs can include: Pressure or tightness around the forehead and temples, Sensitivity to light or smell, Fatigue or difficulty concentrating.

Do’s :
  • Choose indoor, clean indoor air when the AQI is elevated.
  • Stay hydrated and take short breaks from devices or harsh light if you are migraine-prone.
  • If you Make use of prescribed migraine meds, Keep close them accessible.
Don’ts :
  • Try not to do intense outdoor exercise during worse AQI periods.
  • Don’t ignore worsening symptoms that feel unusual for you.

Disclaimer: The health risks mentioned above are precautionary recommendations based on current AQI levels. While you may not experience immediate effects, prolonged exposure to air pollution can lead to these health issues over time. This is not medical advice. Please consult a clinician if you experience severe, unusual, or worsening symptoms.

Air Quality FAQs at Centennial, Colorado

The current real-time AQI (US) level in Centennial, Colorado is 60 (Moderate). This was last updated recently.

The best AQI (US) level was generally lower during the early afternoon in the last 24 hours.

The worst AQI (US) level typically peaks during early morning or late evening hours due to temperature inversion.

The AQI (US) levels in Centennial, Colorado have been fluctuating throughout the last 24 hours depending on traffic and weather conditions.

Current AQI (US) levels are moderate for everyone. It's advised to adjust your outdoor activities based on personal sensitivity.