What conditions does Dark Skies look for?

Astronomical Night: Any. Total Cloud Coverage: ≤ 20.0%. Visibility: ≥ 12000.0m. Precipitation Chance: ≤ 10.0%. Moon Illumination: ≤ 35.0%. Moon Altitude: ≤ 10.0°

How often do conditions match?

There are 11 upcoming opportunity windows in the next 10 days.

More Dark Skies in Alaska

Create your own alerts

Rule Dark Skies

Anchorage - Dark Skies - Alaska

Anchorage, Alaska, United States

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

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Anchorage

Next opportunity

Pristine Dark Skies (pristine)

Anchorage

Thu, Feb 19 · 18:00–07:00 · 13h window

Medium confidence

45%

🌛Moon Altitude-22.4-24.4°

☁️Total Cloud Coverage1.8-4%

Good Dark Skies at Sunrise

Anchorage

Fri, Feb 20 · 07:00–08:00

🌛Moon Altitude:-10.9°

Medium

Good Dark Skies

Anchorage

Fri, Feb 20 · 11:00–12:00

🌛Moon Altitude:16.5°

Medium

Pristine Dark Skies (pristine)

Anchorage

Fri, Feb 20 · 12:00–07:00

🌛Moon Altitude:-16-38.4°

Medium

Pristine Dark Skies (pristine) at Sunrise

Anchorage

Sat, Feb 21 · 07:00–10:00

🌛Moon Altitude:-9.1-2.3°

Low

Pristine Dark Skies (pristine)

Anchorage

Sat, Feb 21 · 10:00–14:00

🌛Moon Altitude:9.1-30.1°

Low

Excellent Dark Skies (pristine)

Anchorage

Sat, Feb 21 · 14:00–20:00

🌛Moon Altitude:36.2-44.6°

Low

+4 more windows in the next 10 days

Create your own Dark Skies alerts

Get notified when these conditions match at your own locations.

Get this template

72-hour requirements breakdown

What passed or failed, hour by hour

13matching hours in the next 95 hoursJump to next match

OR logic: one branch per group is enough

Meets requirement

Misses requirement

Time America/Anchorage	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°
Mon, Feb 16
04:00	✓	21%	19859m	0%	1.2%	-33°
05:00	✓	17%	21255m	0%	1.2%	-27°
06:00	✓	18%	19492m	0%	1.2%	-19°
07:00	✓	80%	6861m	0%	1.2%	-12°
08:00	✓	71%	5351m	0%	1.2%	-5.6°
09:00	✓	49%	10130m	0%	1.2%	0.54°
10:00	✓	62%	13620m	0%	1.2%	5.7°
11:00	✓	12%	24134m	0%	1.2%	9.6°
12:00	✓	15%	24135m	0%	1.2%	12°
13:00	✓	24%	24134m	0%	1.2%	13°
14:00	✓	82%	24134m	0%	1.2%	12°
15:00	✕	55%	24134m	0%	0%	9.1°
16:00	✕	95%	24134m	0%	0%	5.1°
17:00	✕	100%	17269m	0%	0%	-0.15°
18:00	✕	100%	19987m	0%	0%	-6.2°
19:00	✕	100%	22432m	0%	0%	-13°
20:00	✓	100%	21236m	0%	0%	-20°
21:00	✓	100%	21238m	0%	0%	-26°
22:00	✓	100%	19527m	15%	0%	-32°
23:00	✓	100%	21261m	29%	0%	-37°
Tue, Feb 17
24:00	✓	100%	21045m	44%	0%	-41°
01:00	✓	100%	24135m	42%	0%	-42°
02:00	✓	100%	24134m	41%	0%	-41°
03:00	✓	100%	24135m	39%	0%	-38°
04:00	✓	100%	20376m	26%	0%	-33°
05:00	✓	100%	20003m	13%	0%	-27°
06:00	✓	100%	18754m	0%	0%	-20°
07:00	✓	42%	17821m	0%	0%	-13°
08:00	✓	34%	13579m	0%	0%	-5.9°
09:00	✓	46%	7899m	0%	0%	0.94°
10:00	✓	49%	8892m	0%	0%	7.1°
11:00	✓	42%	13630m	0%	0%	12°
12:00	✓	55%	13636m	0%	0%	16°
13:00	✓	42%	13628m	0%	0%	18°
14:00	✓	26%	24134m	0%	0%	19°
15:00	✓	100%	24135m	0%	1.2%	17°
16:00	✓	100%	24134m	0%	1.2%	14°
17:00	✓	85%	24135m	0%	1.2%	9.5°
18:00	✓	100%	24135m	0%	1.2%	3.9°
19:00	✓	100%	24134m	0%	1.2%	-2.4°
20:00	✓	100%	19933m	0%	1.2%	-9.1°
21:00	✓	100%	21998m	0%	1.2%	-16°
22:00	✓	100%	24134m	0%	1.2%	-22°
23:00	✓	100%	24134m	0%	1.2%	-28°
Wed, Feb 18
24:00	✓	100%	24135m	0%	1.2%	-32°
01:00	✓	100%	22329m	7.4%	1.2%	-35°
02:00	✓	42%	21171m	15%	1.2%	-36°
03:00	✓	31%	21176m	22%	1.2%	-34°
04:00	✓	47%	9816m	31%	1.2%	-31°
05:00	✓	46%	20971m	40%	1.2%	-26°
06:00	✓	100%	12531m	49%	1.2%	-20°
07:00	✓	100%	24135m	61%	1.2%	-13°
08:00	✓	100%	24134m	73%	1.2%	-5.8°
09:00	✓	100%	24134m	85%	1.2%	1.4°
10:00	✓	100%	24134m	88%	1.2%	8.2°
11:00	✓	100%	24134m	91%	1.2%	14°
12:00	✓	100%	24135m	95%	1.2%	19°
13:00	✓	100%	18448m	96%	1.2%	23°
14:00	✓	100%	17215m	97%	1.2%	25°
15:00	✓	99%	1306m	98%	4.5%	25°
16:00	✓	97%	3699m	84%	4.5%	23°
17:00	✓	92%	1207m	70%	4.5%	19°
18:00	✓	76%	6780m	56%	4.5%	14°
19:00	✓	64%	9200m	60%	4.5%	8.2°
20:00	✓	60%	9676m	64%	4.5%	1.7°
21:00	✓	79%	8286m	69%	4.5%	-5.1°
22:00	✓	80%	8060m	73%	4.5%	-12°
23:00	✓	94%	8151m	77%	4.5%	-18°
Thu, Feb 19
24:00	✓	96%	7981m	82%	4.5%	-23°
01:00	✓	84%	18796m	82%	4.5%	-27°
02:00	✓	87%	11011m	82%	4.5%	-29°
03:00	✓	97%	7369m	83%	4.5%	-29°
04:00	✓	100%	6790m	74%	4.5%	-27°
05:00	✓	100%	11502m	65%	4.5%	-24°
06:00	✓	100%	7502m	56%	4.5%	-18°
07:00	✓	100%	13902m	59%	4.5%	-12°
08:00	✓	100%	17092m	61%	4.5%	-5.4°
09:00	✓	100%	17869m	64%	4.5%	1.8°
10:00	✓	80%	17857m	56%	4.5%	9°
11:00	✓	59%	17845m	47%	4.5%	16°
12:00	✓	39%	17832m	39%	4.5%	22°
13:00	✓	59%	18706m	39%	4.5%	27°
14:00	✓	80%	19580m	39%	4.5%	30°
15:00	✓	100%	20454m	39%	10%	32°
16:00	✓	68%	21681m	26%	10%	31°
17:00	✓	35%	22908m	13%	10%	29°
18:00	✓	2.6%	24135m	0%	10%	24°
19:00	✓	2.7%	24135m	0%	10%	19°
20:00	✓	2.7%	24135m	0%	10%	13°
21:00	✓	2.8%	24135m	0%	10%	6°
22:00	✓	2.7%	24135m	0%	10%	-0.72°
23:00	✓	2.7%	24135m	0%	10%	-7.1°
Fri, Feb 20
24:00	✓	2.6%	24135m	0%	10%	-13°
01:00	✓	2.3%	24135m	0%	10%	-18°
02:00	✓	2.1%	24135m	0%	10%	-21°

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.

Get Notified of Opportunities

Create your own custom alerts for this location and more.

Create Free Account