NewsNBC Chicago – LocalJune 30, 2026Illinois
Chicago Area Humidity Levels Exceed Amazon Rainforest
Parts of the Chicago area experienced extreme humidity levels on Thursday that surpassed those recorded in the Amazon Rainforest. The region is currently under heat advisories and warnings as temperatures and dew points reach dangerous levels.
Read the full story at NBC Chicago – LocalWhy It Matters
Residents in Cook County and the surrounding Chicago area are under official heat warnings that impact daily safety and outdoor activity until at least Friday.
Key Facts
- Cook County is under an extreme heat warning effective from Monday through Wednesday night.
- Parts of the Chicago area recorded dew points as high as 81 degrees on Thursday.
- Amazon Rainforest dew points were recorded between 75 and 77 degrees on Thursday.
- Lewis University Airport in Romeoville recorded a dew point of 81 degrees.
- DuPage Airport in West Chicago recorded a dew point of 78 degrees.
- Midway Airport recorded a dew point of 76 degrees.
- O’Hare International Airport and Chicago Executive Airport recorded dew points of 75 degrees.
- Periodic thunderstorms are expected to bring relief starting Thursday night through Friday and Independence Day.
Who's Mentioned
locationLewis University Airport“Recorded a dew point of 81 degrees.”locationCook County“Under an extreme heat warning.”locationMidway Airport“Recorded a dew point of 76 degrees.”locationChicago Executive Airport“Recorded a dew point of 75 degrees.”locationO’Hare International Airport“Recorded a dew point of 75 degrees.”locationDuPage Airport“Recorded a dew point of 78 degrees.”organizationNBC Chicago“Analyzed and reported the dew point data.”organizationNational Weather Service“Issued heat advisories and warnings for the Chicago area.”