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Aurora
Live geomagnetic activity, the 27-day outlook and its limits.
NOAA SWPC · Geomagnetic observations & outlook
Loading geomagnetic data. The explanation below remains available if the feed is unavailable.
READING THE DATA
What can these numbers tell us?
Geomagnetic activityKp describes planetary geomagnetic disturbance, not the brightness of an aurora overhead.
Local weatherCloud can obscure the sky. This page has no cloud-cover feed and makes no local viewing prediction.
VisibilityDarkness, location and conditions matter. The 27-day outlook is a trend, not a calendar of guaranteed sightings.
Sources and interpretation
The current reading is NOAA SWPC’s one-minute estimated Kp. Its 27-day outlook reports expected daily maximum Kp. Unissued days remain blank. Older or unavailable readings are labelled.
NOAA SWPC · 27-day outlook