Auroras (northern lights) in San Jose — Apr 17, 2026
Probability of northern lights in San Jose
Information as of 2026-04-17 23:53 (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 2026-04-17 23:53 (end of day) local time
Northern lights (auroras) over North America
Changes from 2026-04-17 to 2026-04-18 UTC
Northern lights (auroras) in the northern hemisphere
Changes from 2026-04-17 to 2026-04-18 UTC
Probability of northern lights (auroras) in cities of United States
Information as of 2026-04-17 23:53 (end of day) local time in San Jose
0 %
Washington
0 %
New York
2 %
Chicago
0 %
Philadelphia
11 %
Seattle
1 %
Detroit
8 %
Portland
0 %
Boston
3 %
Madison
12 %
Bismarck
10 %
Olympia
11 %
Helena
6 %
Saint Paul
72 %
Fairbanks
40 %
Anchorage
43 %
Juneau
25 %
Hooper Bay
43 %
Nome
59 %
Kotzebue
61 %
Utqiagvik
25 %
Bethel
47 %
Cordova
Polar auroras over the past 2 days
Changes in the auroral intensity index from 2026-04-16 to 2026-04-17 local time
