Aurora in Denver on October 1, 2025

October 1, 2025

Denver change region

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Probability of aurora in Denver

Probability of aurora as of end of day, October 1, 2025, Denver time

0 % Denver

Aurora intensity index

Auroral intensity index and estimated minimum latitude of auroral observations at zenith as of the end of October 1, 2025, Denver time

Aurora over North America

Changes in the auroral oval on October 1, 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 October 1, 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 October 1, 2025.

0 % Washington

0 % New York

2 % Chicago

0 % Philadelphia

7 % Seattle

1 % Detroit

2 % Portland

0 % Boston

3 % Madison

12 % Bismarck

4 % Olympia

8 % Helena

6 % Saint Paul

100 % Fairbanks

57 % Anchorage

67 % Juneau

33 % Hooper Bay

59 % Nome

84 % Kotzebue

91 % Utqiagvik

32 % Bethel

67 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from September 30 to October 1, 2025 in the northern hemisphere, Denver time

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