AQI

Madison Air Quality Index & Realtime Air Pollution

Live AQI
34(AQI-US)
Air Quality is
Good
PM2.5 :8.2µg/m³
PM10 :8.6µg/m³
Good
Moderate
Poor
Unhealthy
Severe
Hazardous
050100150200300301+
Good air quality mascot

Primary Air Pollutants Madison (Illinois)

PM2.58µg/m³
PM2.5
Fine particles
PM109µg/m³
PM10
Coarse particles
SO₂1µg/m³
SO₂
Sulphur dioxide
CO120µg/m³
CO
Carbon monoxide
NO₂2µg/m³
NO₂
Nitrogen dioxide
O₃120µg/m³
O₃
Ozone

Hourly forecast Madison (Illinois)

Now34°
Clear sky
16:0035°
Clear sky
17:0034°
Clear sky
18:0034°
Clear sky
19:0032°
Clear sky
20:0030°
Clear sky
21:0028°
Clear sky
22:0027°
Clear sky
23:0026°
Clear sky
00:0025°
Clear sky
01:0024°
Clear sky
02:0023°
Clear sky
03:0022°
Clear sky
04:0021°
Clear sky
05:0021°
Clear sky
06:0020°
Clear sky
07:0021°
Clear sky
08:0022°
Clear sky
09:0024°
Clear sky
10:0025°
Clear sky
11:0027°
Clear sky
12:0028°
Mostly clear
13:0028°
Overcast
14:0028°
Overcast

Health Recommendations for Madison Residents

Based on current air quality: Good · AQI 34

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

UV Index

7.1

High

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

Wind

19.6 km/h

Moderate wind — noticeable and steady.

AQI Graph

Historical AQI Data Madison (Illinois)

34
Min. AQIat 3:00 PM on 21st Jul
169
Max. AQIat 6:00 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 Madison

0.4
Cigarettes
per day
Weekly2.8 Cigarettes
Monthly12 Cigarettes

Breathing the air in this location is equivalent to smoking 0.4 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 Madison 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

Madison · Current air quality: Good · AQI 34

Low Trigger Risk

Headaches

Risk of Headaches symptoms is Low when AQI of Madison 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.

Madison's Nearby Cities AQI

State: Illinois
Population: 257,400
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Population: -
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Population: 86,096
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Population: 114,736
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State: Illinois
Population: 677,560
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10.Kane
State: Illinois
Population: 532,403
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State: Illinois
Population: 916,924
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State: Illinois
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 Madison, Illinois

The current real-time AQI (US) level in Madison, Illinois is 34 (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 Madison, 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.