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Rule Dark Skies

Revelstoke - Dark Skies - Canadian Rockies

Revelstoke, British Columbia, Canada

Moonless nights with crystal-clear skies for deep-sky photography

No opportunities right now
Here’s what usually blocks matches

No Dark Skies opportunities in the next 14 days

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Rule requirements (key thresholds)
Astronomical Night · Any Total Cloud Coverage · ≤ 20.0% Visibility · ≥ 12000.0m Precipitation Chance · ≤ 10.0%

Tip: Scroll down to the 72-hour table to see exactly which condition fails hour by hour.

Most common blockers (next 72 hours)
Total Cloud Coverage 100% failing
Precipitation Chance 100% failing
Visibility 81% failing

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Vancouver

No opportunities in the next 10 days

See the blocker timeline below to understand which conditions are preventing matches.

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks dark sky conditions at Jasper National Park—one of the world's largest accessible Dark Sky Preserves. We combine Bortle scale darkness with moon phase, cloud cover, and atmospheric clarity to predict exceptional astrophotography conditions.

Jasper National Park covers over 11,000 square kilometers of protected darkness, with virtually no light pollution across the entire preserve. The combination of high elevation, dry continental air, and minimal artificial light makes this one of the finest astrophotography locations in North America.

What makes Jasper astrophotography exceptional:

  • Certified Dark Sky Preserve - Jasper holds one of the largest Dark Sky Preserve designations worldwide
  • Bortle 1-2 skies - True dark sky conditions where the Milky Way casts shadows and zodiacal light is visible
  • Mountain silhouettes - Dramatic peaks provide compelling foregrounds for Milky Way compositions
  • Accessibility - Unlike many dark sky locations, Jasper offers easy access with full services and accommodations

Best conditions occur during new moon periods from June through September, when the Milky Way galactic core is visible. Autumn brings earlier darkness and occasional aurora activity as a bonus. Popular locations include Medicine Lake, Pyramid Lake, and Maligne Lake, but nearly anywhere away from Jasper townsite offers exceptional darkness.

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72-hour requirements breakdown

What passed or failed, hour by hour
1matching hours in the next 95 hoursJump to next match
OR logic: one branch per group is enough
Meets requirement
Misses requirement
Time
America/Vancouver
Astronomical Night
Any
Total Cloud Coverage
≤ 20.0%
Visibility
≥ 12000.0m
Precipitation Chance
≤ 10.0%
Moon Illumination
OR1·B1
≤ 35.0%
Moon Altitude
OR1·B2
≤ 10.0°
Sat, Feb 21
11:00✓12%24135m0%18%26°
12:00✓100%24134m0%18%35°
13:00✓100%24135m0%18%43°
14:00✓100%24135m7.4%18%50°
15:00✓100%24135m15%18%54°
16:00✕100%24135m22%28%54°
17:00✕100%24135m4.3%28%51°
18:00✕100%24134m8.7%28%45°
19:00✓100%24135m13%28%37°
20:00✓100%24134m8.7%28%28°
21:00✓100%20799m4.3%28%19°
22:00✓98%20571m0%28%11°
23:00✓100%24134m0%28%2.2°
Sun, Feb 22
24:00✓100%14614m0%28%-5.5°
01:00✓100%11696m0%28%-12°
02:00✓100%11358m0%28%-17°
03:00✓100%9843m0%28%-20°
04:00✓100%9854m0%28%-21°
05:00✓100%9844m0%28%-19°
06:00✓100%24135m0%28%-16°
07:00✓100%9854m0%28%-10°
08:00✓90%24135m32%28%-3.2°
09:00✓93%24135m64%28%4.8°
10:00✓69%24135m95%28%14°
11:00✓100%24134m96%28%23°
12:00✓100%24134m97%28%32°
13:00✓100%24135m98%28%41°
14:00✓100%22739m99%28%49°
15:00✓100%3790m99%28%56°
16:00✓99%21803m99%38%59°
17:00✓100%261m84%38%59°
18:00✓100%190m68%38%55°
19:00✓100%121m52%38%48°
20:00✓100%377m67%38%40°
21:00✓93%208m82%38%31°
22:00✓63%9614m96%38%22°
23:00✓70%8305m97%38%14°
Mon, Feb 23
24:00✓75%2498m97%38%5.5°
01:00✓100%207m97%38%-1.8°
02:00✓88%1968m98%38%-7.9°
03:00✓100%2571m99%38%-13°
04:00✓100%276m99%38%-15°
05:00✓100%127m99%38%-16°
06:00✓100%402m98%38%-14°
07:00✓100%1469m98%38%-11°
08:00✓100%1629m98%38%-5.4°
09:00✓100%392m99%38%1.4°
10:00✓100%4547m100%38%9.1°
11:00✓94%22992m94%38%18°
12:00✓100%7235m89%38%27°
13:00✓100%4122m83%38%36°
14:00✓100%2472m86%38%45°
15:00✓88%8527m88%38%53°
16:00✓77%20701m90%50%60°
17:00✓100%616m83%50%64°
18:00✓100%113m76%50%63°
19:00✓100%125m69%50%58°
20:00✓100%117m71%50%51°
21:00✓100%103m74%50%43°
22:00✓96%127m76%50%34°
23:00✓90%162m64%50%25°
Tue, Feb 24
24:00✓99%124m51%50%16°
01:00✓87%259m39%50%8.4°
02:00✓97%162m45%50%1.2°
03:00✓91%235m50%50%-4.7°
04:00✓99%762m56%50%-9.1°
05:00✓94%1269m45%50%-12°
06:00✓96%5081m33%50%-12°
07:00✓99%4184m22%50%-11°
08:00✓100%4186m26%50%-7.5°
09:00✓100%8171m30%50%-2.4°
10:00✓100%4748m34%50%4.1°
11:00✓100%10983m33%50%12°
12:00✓100%22517m32%50%20°
13:00✓97%22495m31%50%29°
14:00✓99%24043m37%50%38°
15:00✓95%24035m43%50%47°
16:00✓92%24135m50%61%55°
17:00✓94%16337m46%61%62°
18:00✓96%8540m41%61%66°
19:00✓98%742m37%61%66°
20:00✓98%568m46%61%61°
21:00✓99%394m55%61%53°
22:00✓99%220m64%61%45°
23:00✓97%293m70%61%36°
Wed, Feb 25
24:00✓94%366m76%61%27°
01:00✓92%440m82%61%18°
02:00✓94%472m82%61%10°
03:00✓97%504m83%61%3.1°
04:00✓99%537m83%61%-2.8°
05:00✓100%573m76%61%-7.3°
06:00✓100%609m69%61%-9.9°
07:00✓100%645m62%61%-11°
08:00✓99%1368m71%61%-9.4°
09:00✓99%2091m80%61%-6.2°
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity). For OR groups, only one branch is required, so some OR-branch predicates can be ✕ even in a matching hour.

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