Question 1

What is the air quality level in Illinois today?

Accepted Answer

The Air Quality Index (AQI) in Illinois today is 39, which is categorized as Good. Air quality is considered satisfactory, and air pollution poses little or no risk to health.

Question 2

How often is the air quality in Illinois updated?

Accepted Answer

The air quality data for Illinois is usually updated instantly using monitoring stations and sensors. This ensures residents can track real-time changes in the Air Quality Index (AQI).

Question 3

What is a safe AQI level for healthy air quality?

Accepted Answer

An AQI level of 0 to 50 is considered safe and healthy for breathing. At this range, the air quality is clean, and there is little or no risk to human health. People of all age groups, including children, elderly, and those with respiratory or heart conditions, can safely spend time outdoors without concerns. Once the AQI rises above this level, sensitive groups may begin to experience mild health effects depending on the air quality category.

Question 4

Which AQI standard do you use to measure air quality?

Accepted Answer

We use the US AQI (United States Air Quality Index) standard for measuring air quality. It is widely accepted internationally and provides a consistent way to understand how polluted the air is. Learn more on the U.S. Environmental Protection Agency (EPA) website.

Illinois Air Quality Index (AQI) and Air Pollution

Major Pollutants

Explore City-wise Air Quality Index (AQI) in Illinois

Frequently Asked Questions about Air Quality Illinois