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Illinois Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in United States

Last Updated: 2025-10-19 03:17:19 AM (Local Time)

location image
Live AQI
66(AQI-US)
Air Quality is
Moderate
pm10 :  27 µg/m³
PM2.5 :  17 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi moderate level.webp in Illinois
light rain

19 °C

Light rain
Humidity
Humidity90 %

Wind Speed
Wind Speed24 km/h

UV Index
UV Index1
Last Updated: 2025-10-19 03:17:19 AM (Local Time)


Map

Illinois

Major Air Pollutants

Illinois

AQI Graph

Historical Air Quality Data

Illinois

Illinois
AQI
.
17-10-2025Time18-10-2025
46
Min.at 4:58 PM on 17th Oct
68
Max.at 1:04 PM on 18th Oct

Download 2024 Annual Data

World Air Quality Report

Globe

Illinois's Cities

Real-time Air Pollution Level

Location
Status
AQI
PM2.5(µg/m³)
PM10(µg/m³)
Temp.(°C)
Humi.(%)
Moderate
70
20
42
23
71
Good
44
8
18
19
93
Moderate
64
16
40
22
73
Moderate
58
13
14
20
96
Moderate
56
12
15
28
51
Moderate
68
18
33
24
65
Moderate
64
16
25
23
72
Moderate
58
13
14
21
87
Moderate
62
15
17
19
95
Moderate
83
26
36
23
71
Moderate
94
32
33
23
71
Moderate
65
16
18
21
78
Moderate
69
19
30
22
71
Moderate
62
15
23
22
71
Moderate
54
11
28
18
95
Moderate
62
15
37
22
73
Moderate
79
24
35
23
71
Moderate
68
18
32
23
73
Moderate
69
19
33
22
71
Good
50
9
14
19
93
Moderate
52
10
17
18
93
Moderate
65
16
34
24
65
Moderate
70
20
35
23
71
Moderate
53
10
22
18
100
Moderate
94
32
33
23
71
Moderate
56
12
13
29
50
Moderate
66
17
28
23
52
Moderate
62
15
40
22
73
Moderate
68
18
20
22
71
Moderate
69
19
26
23
73
Moderate
96
33
37
23
71
Moderate
66
17
24
23
66
Moderate
69
19
21
18
100
Moderate
65
16
27
24
51
Moderate
59
14
24
24
46
Moderate
64
16
16
21
87
Moderate
92
31
29
22
71
Moderate
59
14
19
21
76
Moderate
68
18
28
24
38
Moderate
81
25
28
18
100
Moderate
66
17
40
24
65
Moderate
56
12
23
22
66
Good
50
9
17
19
100

United States's Metro Cities

Air Quality Index

Health Advice For People Living In

Illinois

0Cigarettes per day

Weekly 0 Cigarettes
Monthly 0 Cigarettes

Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.

Source:

Berkeley Earth

Disclaimer: This cigarette-equivalent estimate is based on the average PM2.5 concentration over the last 24 hours, assuming continuous exposure during that time.

Solutions for Current AQI

  • 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

Illinois

  • asthma due to air pollution in IllinoisAsthma
  • heart due to air pollution in IllinoisHeart Issues
  • allergy due to air pollution in IllinoisAllergies
  • sinus due to air pollution in IllinoisSinus
  • flu due to air pollution in IllinoisCold/Flu
  • copd due to air pollution in IllinoisChronic (COPD)
asthma due to air pollution in Illinois

Mild Chances of Asthma

Asthma

Risk of Asthma symptoms is Mild when AQI is Moderate (50-150)

Moderate symptoms including frequent wheezing, noticeable shortness of breath, chest tightness, and persistent cough.

Do's :

  • Limit outdoor activities when AQI is poor.

  • Clean indoor air with an air purifier to reduce exposure.

  • Soothe the respiratory tract with herbal teas or warm water to help alleviate symptoms.

Don'ts :

  • Exercise outdoors without a mask.

  • Stay in smoky areas with strong fumes.

Disclaimer: The above health risks are precautionary suggestions based on current AQI levels. You may not feel the effects immediately, but prolonged exposure to air pollution can contribute to these health conditions over time. AQI.IN is neither a medical expert nor a provider of medical advice. Please consult a doctor if you experience any of the above similar symptoms.

Most Polluted Cities 2025

United States

Analyze the real-time most air polluted cities in the country.

Illinois's AQI Data Analytics Solutions

Air quality data monitoring platforms

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aqi air quality app for Illinois
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Empower Your Decisions with Reliable Data

Your area’s real-time data with detailed parameters.

Your area’s real-time data with detailed parameters.


Personalized health advice as per current AQI.

Personalized health advice as per current AQI.


Analytical data to identify trends and conditions.

Analytical data to identify trends and conditions.


Connect and control your air quality devices.

Connect and control your air quality devices.


Air Quality FAQs

at Illinois

Frequently Asked Questions About Air Quality

What is the current AQI level in Illinois?

The current real-time AQI level in Illinois is 66 (Moderate) due to recent rainfall by 0.05mm/hr. This was last updated 2025-10-19 03:17:19 AM (Local Time).

When was the best AQI level in Illinois in the last 24 hours?

The best AQI level was 46 (Good) at 4:58 PM, Oct 17, 2025 (Local Time) during the last 24 hours.

When was the worst AQI level in Illinois in the last 24 hours?

The worst AQI level was 68 (Moderate) at 1:04 PM (Local Time) during the last 24 hours.

What is the current trend of AQI levels in Illinois during last 24 hours?

The AQI levels in Illinois have been fluctuating throughout the last 24 hours. The levels have increased by highest 68 at 1:04 PM (Local Time), lowest 46 at 4:58 PM, Oct 17, 2025 (Local Time).

What actions are recommended as per the current AQI level in Illinois?

Current AQI levels are acceptable; however, some pollutants may be a concern for a small number of sensitive individuals.