StarCast · Jasper, CA

Night Sky Tonight in Jasper

Reading tonight's sky conditions…
/ 100
Moon
Dark window
Galactic core
Conditions
Bortle class

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What's in the score
Cloud cover
Moon illumination
Bortle class
Transparency
Humidity

What the app shows you
StarCast galactic core forecast
Nearby dark sky locations

Live scores for the night sky, Milky Way Core windows, darker skies nearby, & more
Check this week's forecast


Frequently asked
Is tonight good for stargazing at Jasper?
The live score above pulls today's forecast and runs it through StarCast's scoring model, factoring in cloud cover, moon illumination, Bortle class, humidity, and atmospheric transparency. Above 70 is an excellent night. Below 40, conditions are poor. The score updates daily.
What makes Jasper good for astrophotography?
Jasper National Park is the largest dark sky preserve in the world by area, encompassing over 11,000 square kilometers of the Canadian Rockies. It was designated a Dark Sky Preserve by the Royal Astronomical Society of Canada in 2011, and the town of Jasper itself has adopted dark-sky-compliant outdoor lighting. The park's Rocky Mountain terrain, alpine lakes, glaciers, and the Athabasca River corridor give photographers an extraordinary range of foreground options. Maligne Lake, the Columbia Icefield, and Pyramid Lake are among the most used night photography locations. Light pollution is effectively absent in most of the park's interior.
When is the Milky Way visible at Jasper?
The galactic core is visible from approximately April through September. At 53 degrees north latitude, the core stays relatively low in the southern sky, but it is visible and photographable above the mountain ridgeline from late spring through early fall. The challenge at this latitude is darkness: June and July bring extremely short nights (as little as 4 to 5 hours of astronomical darkness), so the best opportunities fall in August and September when nights lengthen again. Aurora photography is a secondary draw from September through March, with the park's dark skies making even moderate geomagnetic events highly visible.