Northern Lights visibility based on solar activity & weather
Reykjavik, Iceland
It's daylight at your location — aurora only shows against a dark sky.
24h ago → 3 days ahead · Indigo bands = night · Gray area = clouds · Past is dimmed
Each night scored hour-by-hour — the gauge shows its best hour
Friday
Sep 18
No ChanceSolar activity (Kp 2.7) is enough here, but 100% cloud cover blocks the view.
Peak Kp
3
Clouds
100%
Dark hrs
9.7h
Moon 52% full
Saturday
Sep 19
LikelyPeak Kp
1.7
Clouds
86%
Dark hrs
9.7h
Moon 61% full
Sunday
Sep 20
No ChanceSolar activity (Kp 1.7) is enough here, but 95% cloud cover blocks the view.
Peak Kp
1.7
Clouds
99%
Dark hrs
10h
Moon 70% full
Events from the last 3 days that can influence aurora visibility
Slow solar wind stream. Minimal impact on aurora.
Cloud of solar plasma possibly heading toward Earth. May trigger aurora in 2-3 days.
How solar events cause aurora:
Indirect — can launch plasma clouds toward Earth
High — if aimed at Earth, causes aurora in 1-3 days
Direct — aurora is happening or imminent!
Moderate — can sustain aurora for days
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