Rule
Northern Lights
Aurora in Kuusamo
Northern Ostrobothnia, Finland
Get notified when aurora activity peaks under clear, dark skies—ideal conditions for capturing the Northern Lights.
Upcoming Opportunities
When all conditions match, PhotoWeather marks an opportunity window.
Times shown in Europe/Helsinki
Next opportunity
Northern Lights
Today · 23:00–02:00 · 3h window
Low confidence
32%
Northern Lights
Tomorrow · 05:00–08:00
Low
What this forecast looks for
Plain-language explanation from the ruleAurora Quality combines multiple factors to predict northern lights visibility:
- Geomagnetic Activity (Kp Index): Higher Kp means stronger aurora
- Cloud Cover: Clear skies are essential for viewing
- Moon Phase: Less moonlight means darker skies
- Location Latitude: Higher latitudes see aurora more frequently
The score ranges from 0-100%, where 60%+ indicates good aurora conditions.
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72-hour requirements breakdown
What passed or failed, hour by hourAND logic: all conditions required
Meets requirement
Misses requirement
Time Europe/Helsinki | Aurora Quality ≥ 50.0% |
|---|---|
| Fri, Jan 9 | |
| 08:00 | 14% |
| 09:00 | 0% |
| 10:00 | 0% |
| 11:00 | 0% |
| 12:00 | 0% |
| 13:00 | 0% |
| 14:00 | 0% |
| 15:00 | 0% |
| 16:00 | 49% |
| 17:00 | 47% |
| 18:00 | 47% |
| 19:00 | 47% |
| 20:00 | 47% |
| 21:00 | 47% |
| 22:00 | 47% |
| 23:00 | 54% |
| Sat, Jan 10 | |
| 24:00 | 54% |
| 01:00 | 52% |
| 02:00 | 32% |
| 03:00 | 29% |
| 04:00 | 46% |
| 05:00 | 59% |
| 06:00 | 59% |
| 07:00 | 59% |
| 08:00 | 44% |
| 09:00 | 0% |
| 10:00 | 0% |
| 11:00 | 0% |
| 12:00 | 0% |
| 13:00 | 0% |
| 14:00 | 0% |
| 15:00 | 0% |
| 16:00 | 0% |
| 17:00 | 0% |
| 18:00 | 0% |
| 19:00 | 0% |
| 20:00 | 0% |
| 21:00 | 0% |
| 22:00 | 0% |
| 23:00 | 0% |
| Sun, Jan 11 | |
| 24:00 | 0% |
| 01:00 | 0% |
| 02:00 | 0% |
| 03:00 | 0% |
| 04:00 | 0% |
| 05:00 | 0% |
| 06:00 | 0% |
| 07:00 | 0% |
| 08:00 | 0% |
| 09:00 | 0% |
| 10:00 | 0% |
| 11:00 | 0% |
| 12:00 | 0% |
| 13:00 | 0% |
| 14:00 | 0% |
| 15:00 | 0% |
| 16:00 | 0% |
| 17:00 | 0% |
| 18:00 | 0% |
| 19:00 | 0% |
| 20:00 | 0% |
| 21:00 | 0% |
| 22:00 | 0% |
| 23:00 | 0% |
| Mon, Jan 12 | |
| 24:00 | 0% |
| 01:00 | 0% |
| 02:00 | 0% |
| 03:00 | 0% |
| 04:00 | 0% |
| 05:00 | 0% |
| 06:00 | 0% |
| 07:00 | 0% |
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).
What does Aurora Quality mean?
Inputs that drive the scoreThis derived score summarizes multiple raw weather signals. The table below shows the supporting inputs hour by hour, so you can see what's pushing the score up or down.
| Time Europe/Helsinki | Aurora Activity % | OVATION Aurora Probability % | Solar Elevation ° | Total Cloud Coverage % | Visibility m |
|---|---|---|---|---|---|
| Fri, Jan 9
Sunrise 10:13
Sunset 14:07 | |||||
| 09:00 | 31% | 1% | -5° | 0% | 70220m |
| 10:00 | 31% | 1% | -1.2° | 5% | 70320m |
| 11:00 | 100% | - | 1.3° | 1% | 78260m |
| 12:00 | 100% | - | 2.2° | 0% | 81440m |
| 13:00 | 100% | - | 1.8° | 0% | 81440m |
| 14:00 | 48% | - | 0.1° | 0% | 83380m |
| 15:00 | 48% | - | -3.6° | 0% | 85900m |
| 16:00 | 48% | - | -8° | 0% | 85880m |
| 17:00 | 24% | - | -13° | 0% | 85900m |
| 18:00 | 24% | - | -19° | 0% | 85900m |
| 19:00 | 24% | - | -25° | 0% | 87480m |
| 20:00 | 24% | - | -31° | 0% | 87460m |
| 21:00 | 24% | - | -37° | 0% | 87460m |
| 22:00 | 24% | - | -41° | 3% | 87460m |
| 23:00 | 39% | - | -45° | 7% | 87460m |
| Sat, Jan 10
Sunrise 10:13
Sunset 14:07 | |||||
| 24:00 | 39% | - | -46° | 4% | 87420m |
| 01:00 | 39% | - | -45° | 16% | 87380m |
| 02:00 | 39% | - | -43° | 43% | 87360m |
| 03:00 | 39% | - | -38° | 44% | 87340m |
| 04:00 | 39% | - | -33° | 29% | 87300m |
| 05:00 | 48% | - | -27° | 3% | 87280m |
| 06:00 | 48% | - | -21° | 3% | 87280m |
| 07:00 | 48% | - | -15° | 0% | 87240m |
| 08:00 | 30% | - | -9.6° | 0% | 87260m |
| 09:00 | 30% | - | -4.9° | 0% | 87240m |
| 10:00 | 30% | - | -1.1° | 4% | 87220m |
| 11:00 | 24% | - | 1.4° | 9% | 87180m |
| 12:00 | 24% | - | 2.4° | 45% | 87160m |
| 13:00 | 24% | - | 1.9° | 98% | 87120m |
| 14:00 | 13% | - | 0.23° | 58% | 87120m |
| 15:00 | 13% | - | -3.4° | 42% | 87100m |
| 16:00 | 13% | - | -7.8° | 94% | 87080m |
| 17:00 | 9% | - | -13° | 99% | 87080m |
| 18:00 | 9% | - | -19° | 100% | 87040m |
| 19:00 | 9% | - | -25° | 100% | 87040m |
| 20:00 | 13% | - | -31° | 100% | 85340m |
| 21:00 | 13% | - | -36° | 100% | 85320m |
| 22:00 | 13% | - | -41° | 99% | 85320m |
| 23:00 | 18% | - | -44° | 100% | 87000m |
| Sun, Jan 11
Sunrise 10:10
Sunset 14:10 | |||||
| 24:00 | 18% | - | -46° | 100% | 85320m |
| 01:00 | 18% | - | -45° | 100% | 85300m |
| 02:00 | 18% | - | -43° | 100% | 85280m |
| 03:00 | 18% | - | -38° | 100% | 20480m |
| 04:00 | 18% | - | -33° | 100% | 13360m |
| 05:00 | 9% | - | -27° | 100% | 10640m |
| 06:00 | 9% | - | -21° | 100% | 8040m |
| 07:00 | 9% | - | -15° | 100% | 5600m |
| 08:00 | 13% | - | -9.5° | 100% | 3860m |
| 09:00 | 13% | - | -4.8° | 100% | 2860m |
| 10:00 | 13% | - | -0.92° | 100% | 2340m |
| 11:00 | 13% | - | 1.6° | 100% | 2000m |
| 12:00 | 13% | - | 2.5° | 100% | 1840m |
| 13:00 | 13% | - | 2.1° | 100% | 1820m |
| 14:00 | 18% | - | 0.38° | 100% | 1900m |
| 15:00 | 18% | - | -3.2° | 100% | 2160m |
| 16:00 | 18% | - | -7.6° | 100% | 2640m |
| 17:00 | 13% | - | -13° | 100% | 3620m |
| 18:00 | 13% | - | -19° | 100% | 5940m |
| 19:00 | 13% | - | -25° | 100% | 12640m |
| 20:00 | 13% | - | -31° | 100% | 85480m |
| 21:00 | 13% | - | -36° | 100% | 48540m |
| 22:00 | 13% | - | -41° | 100% | 18460m |
| 23:00 | 13% | - | -44° | 100% | 13800m |
| Mon, Jan 12
Sunrise 10:08
Sunset 14:14 | |||||
| 24:00 | 13% | - | -46° | 100% | 13300m |
| 01:00 | 13% | - | -45° | 100% | 15060m |
| 02:00 | 24% | - | -42° | 100% | 9900m |
| 03:00 | 24% | - | -38° | 100% | 4800m |
| 04:00 | 24% | - | -33° | 100% | 3520m |
| 05:00 | 24% | - | -27° | 100% | 2480m |
| 06:00 | 24% | - | -21° | 100% | 1940m |
| 07:00 | 24% | - | -15° | 100% | 1760m |
| 08:00 | 24% | - | -9.4° | 100% | 2100m |
How to read: these inputs help produce the derived score; they are not requirements by themselves.
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