Auroras (northern lights) in San Jose — Sep 29, 2025
Probability of northern lights in San Jose
Information as of 2025-09-29 23:49 (end of day) local time in San Jose
0 %
San Jose
Aurora intensity index
Auroral intensity index and the theoretically possible latitude of observations for nighttime in the Western Hemisphere as of 2025-09-29 23:49 (end of day) local time
Northern lights (auroras) over North America
Changes from 2025-09-29 to 2025-09-30 UTC
Northern lights (auroras) in the northern hemisphere
Changes from 2025-09-29 to 2025-09-30 UTC
Probability of northern lights (auroras) in cities of United States
Information as of 2025-09-29 23:49 (end of day) local time in San Jose
0 %
Washington
0 %
New York
1 %
Chicago
0 %
Philadelphia
5 %
Seattle
0 %
Detroit
2 %
Portland
0 %
Boston
2 %
Madison
11 %
Bismarck
3 %
Olympia
6 %
Helena
5 %
Saint Paul
100 %
Fairbanks
60 %
Anchorage
61 %
Juneau
35 %
Hooper Bay
65 %
Nome
89 %
Kotzebue
85 %
Utqiagvik
37 %
Bethel
69 %
Cordova
Polar auroras over the past 2 days
Changes in the auroral intensity index from 2025-09-28 to 2025-09-29 local time
