Chicago, IL Air Quality Alert: PM2.5 Levels Reach Unhealthy Category
The EPA reports Unhealthy air quality in Chicago, IL, for February 26, 2026, with a PM2.5 AQI of 154.
Current Air Quality
As of February 26, 2026, the reporting area of Chicago, IL, is experiencing elevated air pollution levels. The primary pollutant of concern is fine particulate matter (PM2.5), which has reached an Air Quality Index (AQI) value of 154. This reading falls within the “Unhealthy” category.
What This Means
An AQI in the “Unhealthy” range (151-200) indicates that air quality is reaching levels where members of the general public may begin to experience health effects. Members of sensitive groups may experience more serious health effects.
Who Should Take Precautions
While everyone may begin to feel health effects when air quality is Unhealthy, the following groups are at higher risk and should take extra care:
- People with heart or lung disease
- Older adults
- Children and teenagers
What You Should Do
To reduce exposure to PM2.5 during this period, the following guidance is recommended:
- Everyone: Reduce prolonged or heavy exertion outdoors.
- Sensitive groups: Avoid prolonged or heavy exertion; move activities indoors or reschedule to a time when air quality is better.
Source
Data provided by EPA AirNow.
Source: EPA Official Notice