Auroras (northern lights) in San Jose — Apr 18, 2026
Probability of northern lights in San Jose
Information as of 2026-04-18 23:57 (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 2026-04-18 23:57 (end of day) local time
Northern lights (auroras) over North America
Changes from 2026-04-18 to 2026-04-19 UTC
Northern lights (auroras) in the northern hemisphere
Changes from 2026-04-18 to 2026-04-19 UTC
Probability of northern lights (auroras) in cities of United States
Information as of 2026-04-18 23:57 (end of day) local time in San Jose
0 %
Washington
0 %
New York
0 %
Chicago
0 %
Philadelphia
3 %
Seattle
0 %
Detroit
1 %
Portland
0 %
Boston
1 %
Madison
7 %
Bismarck
2 %
Olympia
4 %
Helena
3 %
Saint Paul
43 %
Fairbanks
20 %
Anchorage
24 %
Juneau
10 %
Hooper Bay
21 %
Nome
33 %
Kotzebue
38 %
Utqiagvik
11 %
Bethel
25 %
Cordova
Polar auroras over the past 2 days
Changes in the auroral intensity index from 2026-04-17 to 2026-04-18 local time
