Ottawa, Canada Clear Sky Chart

Ottawa, Canada (45.42°, -75.7°) · Updated 01:31 EDT
84
Excellent
high confidence
high · Forecast stability

Tonight's forecast has held steady across recent updates. We compare how much tonight's score has moved across our recent forecast updates, a score that's held steady is more trustworthy.

Confidence reflects how trustworthy the forecast is, it doesn't change the score.

Great night ahead
BEST 23:00–04:58 (5h 58m)
Near-perfect skies with very low moonlight. ISS pass at 20:36 — 42° NNW.
Sunset
19:17
Sunrise
06:40
Usable Hours
8/9
Moon
8%
Visible Planets
♂ Mars36° E
♃ Jupiter14° E
♄ Saturn47° S
⛢ Uranus63° SE
♆ Neptune45° S
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Hour-by-hour scores · Planet rise/set & visibility · ISS & satellite passes · Moon detail · Full score breakdown · Aurora & observer profiles

Stargazing in Ottawa, Canada

Ottawa's Bortle 7 skies clear quickly heading into the Gatineau Hills to the north or the rural Ottawa Valley, where Bortle 3–4 conditions are common within an hour. The North Frontenac Dark Sky Preserve, about two hours south-west, offers Bortle 2 darkness and a dedicated observing pad. At 45.4°N, Ottawa has solid aurora prospects during Kp 5+ storms, with displays visible from dark sites north of the city. Canada's cold, dry winter air brings excellent transparency, though nights are frigid — the trade-off for some of the clearest skies of the year.

Ottawa, Canada Stargazing FAQ

Where can I stargaze near Ottawa?
The Gatineau Hills to the north and the rural Ottawa Valley reach Bortle 3-4 within an hour. The North Frontenac Dark Sky Preserve, about two hours south-west, offers Bortle 2 skies with a dedicated observing pad.
Can you see the northern lights from Ottawa?
Yes — at 45.4°N, Ottawa catches the aurora during Kp 5+ storms, best viewed from dark sites north of the city with an open northern horizon. Stronger storms produce overhead displays.
When is the best time to stargaze in Ottawa?
Cold, dry winter high-pressure systems bring the clearest, most transparent skies, though nights are frigid. Autumn offers a good balance. The Milky Way core is best from late spring through summer.