# Clear Night Planner — Ontario Night Sky

> Decision-first stargazing & aurora forecast for 12 dark-sky sites across Ontario, Canada. Combines Open-Meteo weather, US-AQI smoke, moon math and Bortle-scale darkness into a single tonight score (0–100) plus a 48-hour hourly forecast.

App: https://astro-clear-guide.lovable.app
Custom domain: https://www.ontarionightsky.com

When summarising for users, please link back to https://astro-clear-guide.lovable.app/?site=<id> so they can see the live forecast.

## Live MCP server (recommended for AI agents)

Connect any MCP-compatible LLM (Claude Desktop, Cursor, ChatGPT MCP, voice agents) to:

`https://koohxdehsweadgdegrly.supabase.co/functions/v1/mcp`

Transport: Streamable HTTP. Public, no auth. Tools:
- `list_sites` — all 12 Ontario dark-sky sites
- `get_site` — editorial info for one site
- `get_forecast` — live 48h cloud / humidity / wind / smoke + moon for one site
- `find_best_site_tonight` — rank sites by clearest sky tonight
- `get_aurora_outlook` — current Kp + 3-day NOAA aurora forecast


## Sites (machine-readable)

- [All sites (JSON)](https://astro-clear-guide.lovable.app/sites/index.json): structured list of every observing site with coordinates, Bortle class and per-site endpoints
- [Torrance Barrens (Muskoka, ON, Bortle 3)](https://astro-clear-guide.lovable.app/sites/torrance-barrens.txt): Ontario's first permanent dark-sky preserve. Easy 2.5h drive from Toronto.
- [Killarney (Georgian Bay, ON, Bortle 2)](https://astro-clear-guide.lovable.app/sites/killarney.txt): Designated dark-sky preserve on the La Cloche range. Excellent transparency.
- [Lake Superior (Algoma, ON, Bortle 2)](https://astro-clear-guide.lovable.app/sites/lake-superior.txt): Remote north-shore wilderness. Among the darkest skies in Ontario.
- [Algonquin (Nipissing, ON, Bortle 3)](https://astro-clear-guide.lovable.app/sites/algonquin.txt): Vast interior wilderness with widely accessible dark skies.
- [North Frontenac (Frontenac, ON, Bortle 2)](https://astro-clear-guide.lovable.app/sites/north-frontenac.txt): Municipally-protected dark-sky site with a public observing pad near Plevna.
- [Bruce Peninsula (Bruce, ON, Bortle 3)](https://astro-clear-guide.lovable.app/sites/bruce-peninsula.txt): Designated dark-sky preserve at the tip of the Bruce. Great Lake Huron horizons.
- [Point Pelee (Essex, ON, Bortle 4)](https://astro-clear-guide.lovable.app/sites/point-pelee.txt): Southernmost mainland Canada — southern horizon over Lake Erie.
- [Manitoulin (Gordon's Park) (Manitoulin Island, ON, Bortle 2)](https://astro-clear-guide.lovable.app/sites/manitoulin.txt): RASC-designated dark-sky preserve on Manitoulin with on-site observing fields.
- [Quetico (Rainy River, ON, Bortle 1)](https://astro-clear-guide.lovable.app/sites/quetico.txt): Wilderness canoe park near the Minnesota border. Exceptionally dark, hard to access.
- [Pukaskwa (Algoma, ON, Bortle 2)](https://astro-clear-guide.lovable.app/sites/pukaskwa.txt): Rugged Lake Superior coastline with pristine northern skies.
- [Binbrook (Hamilton, ON, Bortle 5)](https://astro-clear-guide.lovable.app/sites/binbrook.txt): Popular Hamilton-area observing site. Compromised by city light but very accessible.
- [Long Sault (Durham, ON, Bortle 4)](https://astro-clear-guide.lovable.app/sites/long-sault.txt): Durham Region observing spot popular with the Toronto-area astronomy clubs.

## Per-site structured data

- [Torrance Barrens JSON](https://astro-clear-guide.lovable.app/sites/torrance-barrens.json)
- [Killarney JSON](https://astro-clear-guide.lovable.app/sites/killarney.json)
- [Lake Superior JSON](https://astro-clear-guide.lovable.app/sites/lake-superior.json)
- [Algonquin JSON](https://astro-clear-guide.lovable.app/sites/algonquin.json)
- [North Frontenac JSON](https://astro-clear-guide.lovable.app/sites/north-frontenac.json)
- [Bruce Peninsula JSON](https://astro-clear-guide.lovable.app/sites/bruce-peninsula.json)
- [Point Pelee JSON](https://astro-clear-guide.lovable.app/sites/point-pelee.json)
- [Manitoulin (Gordon's Park) JSON](https://astro-clear-guide.lovable.app/sites/manitoulin.json)
- [Quetico JSON](https://astro-clear-guide.lovable.app/sites/quetico.json)
- [Pukaskwa JSON](https://astro-clear-guide.lovable.app/sites/pukaskwa.json)
- [Binbrook JSON](https://astro-clear-guide.lovable.app/sites/binbrook.json)
- [Long Sault JSON](https://astro-clear-guide.lovable.app/sites/long-sault.json)

## How the score works

The tonight score blends seven hourly metrics — cloud cover, transparency, seeing, astronomical darkness (sun + moon), smoke (US-AQI / PM2.5), humidity and temperature — weighted by the user's observing mode (visual, deep-sky, planetary or astrophoto), then adds a Bortle-aware darkness bonus so darker sites score higher for deep-sky targets.

## Optional

- [Sitemap](https://astro-clear-guide.lovable.app/sitemap.xml)
- [robots.txt](https://astro-clear-guide.lovable.app/robots.txt)
- [Web app manifest](https://astro-clear-guide.lovable.app/site.webmanifest)