Arches stargazing forecast — Friday, August 14

Best observing window tonight

Fri 8:00 p.m. – Sat 12:00 a.m. (5h, 1% mean cloud)

Astronomical night

Fri 2:14 p.m. → Sat 12:32 a.m.

Moon

New moon · 2% illuminated

Mean cloud (during night)

36%   (min 0%)

Site

Arches protects more than 2,000 natural sandstone arches near Moab, Utah, and became a certified International Dark Sky Park in 2019 after park staff retrofitted lighting throughout the visitor facilities. The iconic arches make dramatic foreground silhouettes against the Milky Way.

Drive from Toronto: The entrance is on Highway 191, about 5 miles north of Moab, Utah.

Best time of year: Spring and fall for cooler nights; new moon periods give the darkest views of the arches against the sky.

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 Arches: /sites/arches-np.txt
• Structured site data: /sites/arches-np.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=arches-np updates continuously.