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Current air quality index in Charleston, Illinois today

Stay updated with real-time air quality in Charleston, Illinois 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)

56

Moderate

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Charleston, Illinois

Last updated: ... (Local time)

Major air pollutants in Charleston, Illinois

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter2.5 (PM2.5)

12.21 μg/m³

0

12.1

35.5

55.5

250.5

500.5+

Particulate Matter10 (PM10)

47.99 μg/m³

0

55

155

255

425

605+

Ozone (O3)

33.88 ppb

0

55

71

86

201

201+

Sulfur Dioxide (SO2)

0.55 ppb

0

36

76

186

605

1005+

Nitrogen Dioxide (NO2)

5.12 ppb

0

54

101

361

1250

2050+

Carbon Monoxide (CO)

0.41 ppm

0

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

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Charleston, Illinois

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Real-time air quality map: Monitor AQI near Charleston, Illinois




How accurate is Illinois, USA air quality data?

The air quality data for Illinois, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.


Frequently asked questions

How frequently does the air quality data for Charleston, Illinois get updated?

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Air quality updates for Charleston, Illinois are available every hour.


What time in the past 24 hours saw the poorest air quality in Charleston, Illinois?

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Charleston, Illinois experienced its worst air quality at 10:00:00, 2025-06-04.


When was air quality in Charleston, Illinois the best over the past 24 hours?

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The best air quality in Charleston, Illinois was observed at 02:00:00 on 2025-06-04.


What is the air quality in Charleston, Illinois right now?

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The air quality in Charleston, Illinois right now is Moderate, with an AQI of 56.


What pollutant is most frequently found in Charleston, Illinois?

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In Charleston, Illinois, PM2.5 is the most frequently found pollutant.


What can I do if the air quality in Charleston, Illinois is poor?

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When air quality in Charleston, Illinois is compromised, staying indoors and wearing a mask can reduce health risks.


What is the PM2.5 concentration in Charleston, Illinois right now?

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Charleston, Illinois currently has a PM2.5 concentration of 12.207 μg/m3.


What is the current level of PM10 in Charleston, Illinois?

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Charleston, Illinois currently has a PM10 concentration of 47.993 μg/m3.


What is the current level of carbon monoxide (CO) in Charleston, Illinois?

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The current carbon monoxide (CO) level in Charleston, Illinois is 0.41 ppm.


What is the current level of sulfur dioxide (SO2) in Charleston, Illinois?

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The current sulfur dioxide (SO2) concentration in Charleston, Illinois is 0.549 ppb.


What is the current level of ozone (O3) in Charleston, Illinois?

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Charleston, Illinois currently has an ozone (O3) concentration of 33.878 ppm.


What is the current level of nitrogen dioxide (NO2) in Charleston, Illinois?

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The current level of nitrogen dioxide (NO2) in Charleston, Illinois is 5.12 ppb.


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