Montsec stargazing forecast — Saturday, August 15

Catalonia, Spain · Bortle 2 · 42.050, 0.730 · Snapshot generated Sat, 15 Aug 2026 02:05:09 GMT

No-go (High confidence)

Overcast: mean cloud 90%, minimum 66%. Sit this one out.

Best observing window tonight

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

Astronomical night: Sat 10:58 p.m. → Sun 9:05 a.m.
Moon: Waxing crescent · 7% illuminated
Mean cloud (during night): 90% (min 66%)

Site

The Montsec Starlight Reserve in Catalonia protects a pre-Pyrenean limestone ridge. The Parc Astronòmic Montsec runs a public planetarium and telescope park at 1,570 m.

Drive from Toronto: ≈ 2 h from Barcelona via the AP-2 and C-14 to Àger.

Best time of year: March–November; winter can be snowbound at the summit road.

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 Montsec: /sites/montsec-starlight.txt
Structured site data: /sites/montsec-starlight.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=montsec-starlight updates continuously.