Wisconsin was added last month due to the rising number of cases in the state. Nebraska was also removed from the list. Meanwhile, Iowa and Kansas are being re-added to the order.
Chicago Department of Public Health Commissioner Dr. Allison Arwady said states on the travel order are seeing new cases at a rate of greater than 15 per 100,000 per day or higher.
WATCH: Dr. Arwady gives Chicago COVID-19 update
Two states, Arizona and North Carolina, could be removed from the list next week if rates continue to lower there.
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The travel quarantine for Iowa and Kansas will go back into effect on Friday.
The states and territories currently subject to quarantine are:
Travelers from the states are required to quarantine for 14 days. Essential workers are exempt. However, they are asked to limit activities to work activities and monitor for any symptoms.
Violators can be fined $100 - $500 per day, up to a maximum of $7,000.
Dr. Arwady said Chicago continues to see the highest case rates in young adults. Dr. Arwady also said the city is not seeing a large spread from people attending events, but most spread is coming from family members.