Izera stargazing forecast — Saturday, August 15

CZ/PL border · Bortle 3 · 50.850, 15.350 · Snapshot generated Sat, 15 Aug 2026 02:05:09 GMT

Excellent (High confidence)

5h of clear sky (≤30% cloud) during tonight's astronomical night, mean cloud 25%.

Best observing window tonight

Sat 11:00 p.m. – Sun 3:00 a.m. (5h, 0% mean cloud)

Astronomical night: Sat 10:19 p.m. → Sun 7:47 a.m.
Moon: Waxing crescent · 7% illuminated
Mean cloud (during night): 25% (min 0%)

Site

The Izera Dark-Sky Park was the world's first cross-border Dark Sky Park (Poland + Czech Republic, 2009). It covers the Jizera Mountains at around 900 m elevation.

Drive from Toronto: ≈ 1.5 h from Wrocław or 2 h from Prague to Jakuszyce/Jizerka.

Best time of year: Summer for hiking access; the plateau is often snow-bound December–March.

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 Izera: /sites/izera-dsp.txt
Structured site data: /sites/izera-dsp.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=izera-dsp updates continuously.