Aurora in Chicago on December 18, 2025

December 18, 2025

Chicago change region

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Probability of aurora in Chicago

Probability of aurora as of end of day, December 18, 2025, Chicago time

0 % Chicago

Aurora intensity index

Auroral intensity index and estimated minimum latitude of auroral observations at zenith as of the end of December 18, 2025, Chicago time

Aurora over North America

Changes in the auroral oval on December 18, 2025 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 December 18, 2025 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 December 18, 2025.

0 % Washington

0 % New York

0 % Chicago

0 % Philadelphia

0 % Seattle

0 % Detroit

0 % Portland

0 % Boston

0 % Madison

1 % Bismarck

0 % Olympia

0 % Helena

0 % Saint Paul

9 % Fairbanks

3 % Anchorage

4 % Juneau

1 % Hooper Bay

3 % Nome

6 % Kotzebue

11 % Utqiagvik

1 % Bethel

4 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from December 17 to 18, 2025 in the northern hemisphere, Chicago time

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