Aurora in Portland on September 30, 2025

September 30, 2025

Portland change region

Home › Aurora › Portland › September 30, 2025

Probability of aurora in Portland

Probability of aurora as of end of day, September 30, 2025, Portland time

1 % Portland

Aurora intensity index

Auroral intensity index and estimated minimum latitude of auroral observations at zenith as of the end of September 30, 2025, Portland time

Aurora over North America

Changes in the auroral oval on September 30, 2025 in United States from the beginning to the end of the day, Coordinated Universal Time (UTC)

Movie in HD PNG HTML

Aurora in the northern hemisphere

Changes in the auroral oval on September 30, 2025 in the northern hemisphere from the beginning to the end of the day, Coordinated Universal Time (UTC)

Movie in HD PNG HTML

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 September 30, 2025.

0 % Washington

0 % New York

0 % Chicago

0 % Philadelphia

3 % Seattle

0 % Detroit

1 % Portland

0 % Boston

1 % Madison

8 % Bismarck

2 % Olympia

5 % Helena

4 % Saint Paul

54 % Fairbanks

24 % Anchorage

29 % Juneau

12 % Hooper Bay

26 % Nome

43 % Kotzebue

53 % Utqiagvik

12 % Bethel

29 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from September 29 to 30, 2025 in the northern hemisphere, Portland time

API: JSON | TXT