AQI

McLean Air Quality Index & Realtime Air Pollution

Live AQI
20(AQI-US)
Air Quality is
Good
PM2.5 :4.8µg/m³
PM10 :4.8µg/m³
Good
Moderate
Poor
Unhealthy
Severe
Hazardous
050100150200300301+
Good air quality mascot

Primary Air Pollutants McLean (Illinois)

PM2.55µg/m³
PM2.5
Fine particles
PM105µg/m³
PM10
Coarse particles
SO₂1µg/m³
SO₂
Sulphur dioxide
CO131µg/m³
CO
Carbon monoxide
NO₂1µg/m³
NO₂
Nitrogen dioxide
O₃99µg/m³
O₃
Ozone

Hourly forecast McLean (Illinois)

Now29°
Clear sky
16:0029°
Clear sky
17:0028°
Clear sky
18:0027°
Clear sky
19:0026°
Clear sky
20:0024°
Clear sky
21:0022°
Clear sky
22:0021°
Clear sky
23:0021°
Clear sky
00:0020°
Clear sky
01:0020°
Clear sky
02:0019°
Clear sky
03:0019°
Clear sky
04:0018°
Clear sky
05:0017°
Clear sky
06:0017°
Clear sky
07:0018°
Clear sky
08:0019°
Clear sky
09:0020°
Clear sky
10:0021°
Clear sky
11:0023°
Overcast
12:0023°
Overcast
13:0023°
Mostly clear
14:0024°
Overcast

Health Recommendations for McLean Residents

Based on current air quality: Good · AQI 20

Good
Air Purifier
Air PurifierTurn Off
Car Filter
Car FilterAdvisable
N95 Mask
N95 MaskAdvisable
Stay Indoor
Stay IndoorAdvisable

UV Index

6.05

High

High UV levels — apply sunscreen and limit direct sun exposure.

Wind

26.6 km/h

Moderate wind — noticeable and steady.

AQI Graph

Historical AQI Data McLean (Illinois)

20
Min. AQIat 3:00 PM on 21st Jul
75
Max. AQIat 4:00 PM on 20th Jul
20-07-2026Time21-07-2026

United States Major Cities AQI Overview


Most Polluted Cities by AQI United States

Last Updated: 21 Jul 2026, 15:01

Health Advice For People Living in McLean

0.2
Cigarettes
per day
Weekly1.4 Cigarettes
Monthly6 Cigarettes

Breathing the air in this location is equivalent to smoking 0.2 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 McLean Current AQI (US)
Air Purifier
Air PurifierTurn Off
Car Filter
Car FilterAdvisable
N95 Mask
N95 MaskAdvisable
Stay Indoor
Stay IndoorAdvisable
Must turn on the air purifier to enjoy fresh air.Get an Air Purifier

Prevent Health Problems: Understand Your Risks

McLean · Current air quality: Good · AQI 20

Low Trigger Risk

Headaches

Risk of Headaches symptoms is Low when AQI of McLean is Good (0-50).

Common signs

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

Do’s :
  • Favor indoor, filtered indoor air when the AQI is worse.
  • Hydrate and take breaks from screens or bright light if you are migraine-prone.
  • If you Try prescribed migraine meds, Have them accessible.
Don’ts :
  • Do not do intense outdoor exercise during elevated AQI periods.
  • Avoid ignore worsening effects 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.

McLean's Nearby Cities AQI

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Population: -
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Population: 3,012
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13.Cook
State: Illinois
Population: 5,194,675
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14.Lake
State: Illinois
Population: 714,342
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Air Quality FAQs at McLean, Illinois

The current real-time AQI (US) level in McLean, Illinois is 20 (Good). 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 McLean, Illinois have been fluctuating throughout the last 24 hours depending on traffic and weather conditions.

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