Tromsø stargazing forecast — Saturday, August 15

Troms, Norway · Bortle 2 · 69.650, 18.960 · Snapshot generated Sat, 15 Aug 2026 02:05:09 GMT

No-go (High confidence)

Overcast: mean cloud 100%, minimum 99%. Sit this one out.

Best observing window tonight

No clear window of 2+ hours during tonight's astronomical night.

Astronomical night: Sat 11:50 p.m. → Sun 5:51 a.m.
Moon: Waxing crescent · 7% illuminated
Mean cloud (during night): 100% (min 99%)

Site

Tromsø is Europe's most accessible aurora city — a proper university city with dark skies beginning 20 minutes from the airport. Aurora tours run every clear night from September to March.

Drive from Toronto: ≈ 20 min from Tromsø airport to the city; aurora chase-tours drive 1–3 h to find clear skies.

Best time of year: Late September through mid-March. Book chase-tours that will drive to Finland or Sweden if Tromsø is clouded.

Open the live 48-hour forecast →

Citations & data sources

Open-Meteo Forecast API (cloud, humidity, wind, visibility)
Open-Meteo astronomical data (sunrise, sunset, moon)
Bortle scale reference for site darkness
Editorial guide for Tromsø: /sites/tromso.txt
Structured site data: /sites/tromso.json
Live MCP server (AI agents): https://koohxdehsweadgdegrly.supabase.co/functions/v1/mcp

This is a build-time snapshot — the live forecast at https://ontarionightsky.com/?site=tromso updates continuously.