Stargazing near Hamilton tonight

Hamilton has the Niagara Escarpment on its doorstep and Bortle-3 skies under 2.5h away in Muskoka.

Updated: · Tonight: Friday, August 14, 2026

Best dark-sky site near Hamilton tonight

★ Best tonight

Torrance Barrens

Muskoka, ON · Bortle 3 · 190 km away

Excellent 8h of clear sky (≤30% cloud) during tonight's astronomical night, mean cloud 14%.

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

Moon: New moon · 2% illuminated

Open live forecast → Site guide

How we picked tonight's best site

Show ranking debug panel (4 candidates, 7-level tie-break)

Torrance Barrens Lost on windowHours to Binbrook (but earlier rule decided).

Site Verdict Window Win cloud Min cloud Mean cloud Bortle Distance
Binbrook Excellent (5) 6h 4% 0% 19% 5 16.5 km
Long Sault Fair (3) 3h 19% 17% 57% 4 125.7 km
Pinery Good (4) 4h 8% 0% 49% 4 158.9 km
★ Torrance Barrens Excellent (5) 8h 1% 0% 14% 3 189.8 km

★ = chosen by tie-break ladder. Lower cloud %, lower Bortle, lower distance = better. Higher windowHours = better.

Tie-break ladder (in order)

  1. verdictRank (desc) — Excellent > Good > Fair > Poor > No-go
  2. windowHours (desc) — Longer clear window wins
  3. windowMeanCloudPct (asc) — Cleaner sky inside the window
  4. tonightMinCloudPct (asc) — Best moment of the night
  5. tonightMeanCloudPct (asc) — Overall sky quality
  6. bortle (asc) — Darker site wins
  7. distanceKm (asc) — Closer wins last

Same metrics are exposed at snapshot.json as bestTonight.tieBreak and closestSites[].tieBreak.

Understand tonight's forecast for Hamilton

Each verdict above blends four limiting factors. Tap a card to learn what it measures, where the number comes from, and how to use it.

📖 How to read the forecast Plain-English breakdown of every row, color and score. 🌙 Moon & tonight's window New moon · 2% illuminated ☁️ Cloud cover & sky score Mean cloud tonight: 14% (min 0%). 🔭 Transparency How clean the air column is — controls how faint a star you can see. 🔥 Smoke & AQI Wildfire smoke and PM2.5 from US-AQI — kills transparency before clouds do.

All 4 closest sites, ranked by distance

Binbrook

Hamilton, ON · Bortle 5 · 16 km away

Excellent 6h of clear sky (≤30% cloud) during tonight's astronomical night, mean cloud 19%.

Best clear window: Fri 5:00 p.m. – Fri 10:00 p.m. (6h, 4% mean cloud)

Moon: New moon · 2% illuminated

Open live forecast → Site guide

Long Sault

Durham, ON · Bortle 4 · 126 km away

Fair Short 3h window, otherwise mean cloud 57%. Worth a look if you're nearby.

Best clear window: Fri 11:00 p.m. – Sat 1:00 a.m. (3h, 19% mean cloud)

Moon: New moon · 2% illuminated

Open live forecast → Site guide

Pinery

Lake Huron shore, ON · Bortle 4 · 159 km away

Good 4h clear window during astronomical night, mean cloud 49%.

Best clear window: Fri 7:00 p.m. – Fri 10:00 p.m. (4h, 8% mean cloud)

Moon: New moon · 2% illuminated

Open live forecast → Site guide

Torrance Barrens

Muskoka, ON · Bortle 3 · 190 km away

Excellent 8h of clear sky (≤30% cloud) during tonight's astronomical night, mean cloud 14%.

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

Moon: New moon · 2% illuminated

Open live forecast → Site guide

Frequently asked questions

Where can I stargaze near Hamilton tonight?

Tonight's best site near Hamilton is Torrance Barrens (190 km away). Verdict: Excellent. 8h of clear sky (≤30% cloud) during tonight's astronomical night, mean cloud 14%.

What is the closest dark-sky site to Hamilton?

Binbrook is the closest, about 16 km from Hamilton (Bortle 5).

Can I see the Milky Way from Hamilton?

Hamilton's urban sky is too light-polluted for naked-eye Milky Way. For a clear view of the galactic band, drive to a Bortle 1–3 site such as Torrance Barrens.

When are northern lights visible near Hamilton?

Aurora is visible during geomagnetic storms with Kp ≥ 5–6. Check the live aurora outlook and head to the closest dark site with a clean northern horizon.

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