Aurora in Chicago on April 17, 2026

April 17, 2026

Chicago change region

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Probability of aurora in Chicago

Probability of aurora as of end of day, April 17, 2026, Chicago time

1 % Chicago

Aurora intensity index

Auroral intensity index and estimated minimum latitude of auroral observations at zenith as of the end of April 17, 2026, Chicago time

Aurora over North America

Changes in the auroral oval on April 17, 2026 in United States from the beginning to the end of the day, Coordinated Universal Time (UTC)

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Aurora in the northern hemisphere

Changes in the auroral oval on April 17, 2026 in the northern hemisphere from the beginning to the end of the day, Coordinated Universal Time (UTC)

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Probability of aurora in cities of United States

Estimated probabilities of aurora observations at zenith for cities in United States as of end of day April 17, 2026.

0 % Washington

0 % New York

1 % Chicago

0 % Philadelphia

2 % Seattle

1 % Detroit

1 % Portland

0 % Boston

2 % Madison

5 % Bismarck

1 % Olympia

3 % Helena

4 % Saint Paul

19 % Fairbanks

7 % Anchorage

10 % Juneau

4 % Hooper Bay

7 % Nome

12 % Kotzebue

24 % Utqiagvik

4 % Bethel

9 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from April 16 to 17, 2026 in the northern hemisphere, Chicago time

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