Finland's capital sees northern lights several times per year, with better viewing from nearby Nuuksio National Park.
Helsinki, Finland
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 3.0) is enough here, but 88% cloud cover blocks the view.
Peak Kp
3
Clouds
94%
Dark hrs
10h
Moon 51% full
Saturday
Sep 19
No ChanceSolar activity (Kp 1.7) is enough here, but 100% cloud cover blocks the view.
Peak Kp
1.7
Clouds
99%
Dark hrs
10h
Moon 60% full
Sunday
Sep 20
No ChanceKp 1.7 is below the ~4.3 needed at this magnetic latitude. Skies are clear, but that doesn't help.
Peak Kp
1.7
Clouds
72%
Dark hrs
10h
Moon 69% 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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