Illinois 121 Air Quality Index (AQI) | Air Pollution
Real-time PM2.5, PM10 air pollution level in Decatur
Last Updated: 11 Aug 2025, 01:10pm (Local Time)
31 °C
Partly cloudy
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Illinois 121
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Illinois 121, Decatur, Illinois, United States
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* This data analysis is from year 2025 - 2025
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Illinois 121
Health Advice For People Living In
Illinois 121
0Cigarettes per day
Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.
Source:
Berkeley Earth
Solutions for Current AQI
Air PurifierTurn On
Car FilterMust
N95 MaskMust
Stay IndoorMust
Must turn on the air purifier to enjoy fresh air.
Get an Air PurifierPrevent Health Problems: Understand Your Risks
Illinois 121
Asthma
Heart Issues
Allergies
Sinus
Cold/Flu
Chronic (COPD)
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.
Most Polluted Cities 2025
United States
Analyze the real-time most air polluted cities in the country.
Standard Value
1.
Northwest St. Louis, United States
2.
Ryder, United States
3.
Minot, United States
4.
Marshall, United States
5.
Red Lake, United States
6.
Fargo, United States
7.
Bismarck, United States
8.
Bemidji, United States
9.
Sioux Falls, United States
10.
Aberdeen, United States
Last Updated: 11 Aug 2025, 06:14 PM
AQI City RankingsAir Quality Solutions For Illinois 121
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Air Quality FAQs
at Illinois 121
Frequently Asked Questions About Air Quality
What is the current AQI level in Illinois 121?
The current real-time AQI level in Illinois 121 is 54 (Moderate). This was last updated 11 Aug 2025, 01:10pm (Local Time).
When was the best AQI level in Illinois 121 in the last 24 hours?
The best AQI level was 42 (Good) at 5:10 AM (Local Time) during the last 24 hours.
When was the worst AQI level in Illinois 121 in the last 24 hours?
The worst AQI level was 54 (Moderate) at 1:10 PM (Local Time) during the last 24 hours.
What is the current trend of AQI levels in Illinois 121 during last 24 hours?
The AQI levels in Illinois 121 have been fluctuating throughout the last 24 hours. The levels have increased by highest 54 at 1:10 PM (Local Time), lowest 42 at 5:10 AM (Local Time).
What actions are recommended as per the current AQI level in Illinois 121?
Current AQI levels are acceptable; however, some pollutants may be a concern for a small number of sensitive individuals.
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