Chicago Air Quality Index (AQI) | Air Pollution
Real-time PM2.5, PM10 air pollution level in Chicago
Last Updated: 2026-07-17 11:51:02 (Local Time)
27 °C
Overcast
Presently, Chicago ranks for having the good air quality among cities worldwide.
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Chicago, Illinois, United States
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2.3Cigarettes per day
Breathing the air in this location is as harmful as smoking 2.3 cigarettes a day.
Source:
Berkeley Earth
Solutions for Current AQI (US)
Prevent Health Problems: Understand Your Risks
Chicago
Asthma
Heart Issues
Allergies
Sinus
Cold/Flu
Chronic (COPD)
Most Polluted Cities 2026
United States
Analyze the real-time most air polluted cities in the country.
Standard Value
1.
Appleton, Wisconsin
Hazardous
19xabove Standard
2.
Madison, Wisconsin
Severe
17xabove Standard
3.
Rockford, Illinois
Severe
16xabove Standard
4.
Baraboo, Wisconsin
Severe
16xabove Standard
5.
Brighton Township, New York
Severe
14xabove Standard
6.
Rochester, New York
Severe
14xabove Standard
7.
Bristol, Pennsylvania
Unhealthy
7xabove Standard
8.
Bridgeport, Connecticut
Unhealthy
7xabove Standard
9.
Camden, New Jersey
Unhealthy
6xabove Standard
10.
New Haven, Connecticut
Unhealthy
6xabove Standard
Last Updated: 17 Jul 2026, 06:28 AM
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at Chicago
Frequently Asked Questions About Air Quality
1. What is the current AQI (US) level in Chicago?
1. What is the current AQI (US) level in Chicago?
The current real-time AQI (US) level in Chicago is 25 (Good) due to recent rainfall by 0.08mm/hr. This was last updated 2026-07-17 11:51:02 (Local Time).
2. When was the best AQI (US) level in Chicago in the last 24 hours?
2. When was the best AQI (US) level in Chicago in the last 24 hours?
The best AQI (US) level was 22 (Good) at 11:31 AM (Local Time) during the last 24 hours.
3. When was the worst AQI (US) level in Chicago in the last 24 hours?
3. When was the worst AQI (US) level in Chicago in the last 24 hours?
The worst AQI (US) level was 260 (Severe) at 12:01 PM, Jul 16, 2026 (Local Time) during the last 24 hours.
4. What is the current trend of AQI (US) levels in Chicago during last 24 hours?
4. What is the current trend of AQI (US) levels in Chicago during last 24 hours?
The AQI (US) levels in Chicago have been fluctuating throughout the last 24 hours. The levels have increased by highest 260 at 12:01 PM, Jul 16, 2026 (Local Time), lowest 22 at 11:31 AM (Local Time).
5. What actions are recommended as per the current AQI (US) level in Chicago?
5. What actions are recommended as per the current AQI (US) level in Chicago?
The air quality is satisfactory, and air pollution poses little or no risk. No special precautions are needed; enjoy outdoor activities freely.
Recent AQI Blogs
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