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Possible online services disruption due to Internet related outage

A worldwide technology outage is causing disruption to some State of Illinois online systems.  We are aware of this issue and are diligently working on restoration.

Agency Alert

Welcome to the new IDOT home page.  Our location has changed, please update any bookmarks.

Illinois Department of Transportation

Automated System Observation Facilities

The following tables list the frequencies and telephone numbers of on-site weather observation systems located at Illinois airports. The data in these tables change periodically, so check this page frequently.

Remember, a good weather briefing before your flight
is your best insurance for a safe flight!

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Contact Us

Illinois Department of
Transportation
Hanley Building
2300 S. Dirksen Parkway
Springfield, IL 62764

(217) 782-7820 or
TTY (866) 273-3681

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