Mount Union Lookout — a scenic viewpoint in Yavapai County, Arizona — is a rewarding subject for landscape photographers. It sits roughly 15.1 km (9.4 mi) SSE of Prescott.
Sunrise & sunset directions
At Mount Union Lookout the sunrise point swings a long way through the year: about 61° (ENE) at the June solstice and 118° (ESE) in late December. Sunset moves from 300° (WNW) in June to 242° (WSW) in December, and the midday sun climbs to 79° in summer but only 32° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 6:34 AM | 90° E | 6:42 PM | 271° W | 55° | 12h 08m |
| June solstice (Jun 21) | 5:18 AM | 61° ENE | 7:46 PM | 300° WNW | 79° | 14h 28m |
| September equinox (Sep 22) | 6:18 AM | 89° E | 6:28 PM | 271° W | 56° | 12h 09m |
| December solstice (Dec 21) | 7:33 AM | 118° ESE | 5:24 PM | 242° WSW | 32° | 9h 51m |
Azimuth is measured clockwise from true north (90° = east, 270° = west). Computed for 2026; values change by less than a degree from year to year.
Golden hour & blue hour by month
Overlooks are about the sweep of the land, so low-angle light matters most: side-light at sunrise or sunset reveals ridges and texture that midday sun flattens.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:09 AM | 7:36 AM | 8:14 AM | 5:05 PM | 5:43 PM | 6:10 PM | 10h 06m |
| February | 6:50 AM | 7:16 AM | 7:50 AM | 5:39 PM | 6:14 PM | 6:39 PM | 10h 58m |
| March | 6:16 AM | 6:41 AM | 7:14 AM | 6:04 PM | 6:38 PM | 7:03 PM | 11h 57m |
| April | 5:33 AM | 5:59 AM | 6:32 AM | 6:28 PM | 7:02 PM | 7:27 PM | 13h 03m |
| May | 5:00 AM | 5:28 AM | 6:04 AM | 6:50 PM | 7:26 PM | 7:53 PM | 13h 57m |
| June | 4:48 AM | 5:18 AM | 5:55 AM | 7:07 PM | 7:44 PM | 8:14 PM | 14h 27m |
| July | 5:00 AM | 5:29 AM | 6:05 AM | 7:07 PM | 7:43 PM | 8:12 PM | 14h 14m |
| August | 5:25 AM | 5:51 AM | 6:26 AM | 6:44 PM | 7:19 PM | 7:45 PM | 13h 27m |
| September | 5:48 AM | 6:14 AM | 6:47 AM | 6:05 PM | 6:38 PM | 7:03 PM | 12h 24m |
| October | 6:10 AM | 6:36 AM | 7:10 AM | 5:22 PM | 5:56 PM | 6:22 PM | 11h 21m |
| November | 6:37 AM | 7:04 AM | 7:40 AM | 4:50 PM | 5:26 PM | 5:53 PM | 10h 23m |
| December | 7:02 AM | 7:30 AM | 8:08 AM | 4:43 PM | 5:22 PM | 5:50 PM | 9h 52m |
Local time (America/Phoenix), including daylight saving time. Golden hour runs from about −4° to +6° solar altitude, so the morning golden hour begins during blue hour, before sunrise.
Milky Way & night sky
From Mount Union Lookout, the Milky Way core is visible in a dark sky from February through October. June gives the longest window (about 6.0 hours on a moonless night), and the core peaks around 27° above the southern horizon. Our light-pollution model puts the sky at about Bortle 4 (rural / suburban transition), good enough for detailed Milky Way images.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | 0° | — |
| February | 5:08 AM – 5:48 AM | 0.7 | 16° | SE → SE |
| March | 3:22 AM – 5:12 AM | 1.8 | 23° | SE → SSE |
| April | 1:20 AM – 4:20 AM | 3.0 | 26° | SE → S |
| May | 11:24 PM – 3:44 AM | 4.3 | 27° | SE → SSW |
| June | 9:31 PM – 3:31 AM | 6.0 | 27° | SE → SW |
| July | 9:26 PM – 2:06 AM | 4.7 | 27° | SSE → SW |
| August | 8:51 PM – 12:01 AM | 3.2 | 27° | S → SW |
| September | 8:03 PM – 9:53 PM | 1.8 | 23° | SSW → SW |
| October | 7:20 PM – 8:00 PM | 0.7 | 16° | SW → SW |
| November | Below 10° in darkness | — | 2° | — |
| December | Below 10° in darkness | — | -18° | — |
Window when the galactic core is at least 10° high during astronomical darkness on the 15th of each month. Pick nights within a few days of the new moon. Plan exact nights with the Milky Way planner.
Estimated sky darkness: 4 Bortle 4 — Rural / suburban transition. Light domes are visible in several directions; the Milky Way is clear but lacks detail near the horizon. Modeled zenith brightness ≈ 21.14 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show June as the clearest month (about 17% average cloud cover) and July as the cloudiest (45%). July is the warmest month and December the coldest, which matters for gear, snow access and how long batteries last at night.
Average cloud cover (%)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 72 | 75 | 84 | 91 | 99 | 109 | 107 | 105 | 103 | 94 | 83 | 73 |
| Low °F | 2 | 5 | 17 | 22 | 33 | 43 | 54 | 50 | 40 | 25 | 20 | 7 |
| Precip. (in) | 1.6 | 1.8 | 1.1 | 0.5 | 0.4 | 0.1 | 2.0 | 2.0 | 1.2 | 1.0 | 1.1 | 1.4 |
Monthly climatology for the surrounding 1° grid cell from NASA POWER (MERRA-2). Mountain sites can be colder and cloudier than the cell average.
Photography tips for this scenic viewpoint
- Blue hour after sunset is excellent for towns or roads below the viewpoint as lights come on.
- Arrive 30–45 minutes before sunrise or sunset to find a composition before the light peaks.
- Use a telephoto (70–200 mm) to isolate layered ridges and light rays instead of shooting only wide.
- Check the sun azimuth for your date: front-light, side-light and back-light give three different pictures from the same rail.
- Haze builds in summer afternoons; mornings after a cold front are often the clearest.
- Tell someone where you're going in remote areas and carry the ten essentials.
Season: Clear, dry air in autumn and after winter storms gives the longest views; summer adds wildflowers but also haze.
Suggested gear: Tripod, Telephoto lens, Graduated ND filter, Headlamp. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 25 km of Mount Union Lookout, closest first.
Fire Lookout
Waterfall
Scenic ViewpointScenic Viewpoint
Ghost TownScenic ViewpointWaterfall
Ghost TownCampgrounds nearby (Recreation.gov)
- Upper Wolf Creek Group6.3 km (3.9 mi) · reservable
- Groom Creek Horse Camp6.5 km (4.0 mi) · reservable
- Lower Wolf Creek Campground6.7 km (4.2 mi)
- Groom Creek Schoolhouse6.8 km (4.2 mi) · reservable
- Hilltop Campground (Az)10.5 km (6.5 mi) · reservable
FAQ
When is the best time to photograph Mount Union Lookout?
What time is golden hour at Mount Union Lookout?
Where does the sun rise and set at Mount Union Lookout?
Can you see the Milky Way from Mount Union Lookout?
Do you need a permit to photograph at Mount Union Lookout?
How far is Mount Union Lookout from Prescott?
Sources
Location data: OpenStreetMap contributors. Sun, moon and Milky Way times are computed by LWPhoto Atlas for 2026. Climate: NASA POWER. Sky darkness is a population-based estimate (Walker's law), not a measurement. See data sources & licenses.