Allegheny Islands State Park is a state park in Allegheny County, Pennsylvania. The nearest town is Oakmont, about 1.9 km (1.2 mi) away (Allegheny Islands State Park lies NE of town).
Allegheny Islands State Park is a 50-acre (20 ha) Pennsylvania state park in Harmar Township, Allegheny County, Pennsylvania in the United States. The undeveloped park is composed of three alluvial islands located in the middle of the Allegheny River northeast of Pittsburgh. The islands are just north of the boroughs of Oakmont and Plum, and southwest of Cheswick. Bridges for the Pennsylvania Turnpike (Interstate 76) and the Bessemer and Lake Erie Railroad Branch of the Canadian National Railway cross the Allegheny River at the middle island.From the Wikipedia article “Allegheny Islands State Park”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Allegheny Islands State Park the sunrise point swings a long way through the year: about 58° (ENE) at the June solstice and 121° (ESE) in late December. Sunset moves from 303° (WNW) in June to 239° (WSW) in December, and the midday sun climbs to 73° in summer but only 26° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:24 AM | 90° E | 7:32 PM | 271° W | 49° | 12h 08m |
| June solstice (Jun 21) | 5:50 AM | 58° ENE | 8:54 PM | 303° WNW | 73° | 15h 04m |
| September equinox (Sep 22) | 7:08 AM | 89° E | 7:18 PM | 271° W | 50° | 12h 11m |
| December solstice (Dec 21) | 7:40 AM | 121° ESE | 4:56 PM | 239° WSW | 26° | 9h 16m |
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
State parks often protect a signature feature — a gorge, lake or overlook — that is best in early morning before visitors and harsh light arrive.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:11 AM | 7:41 AM | 8:23 AM | 4:35 PM | 5:17 PM | 5:47 PM | 9h 36m |
| February | 6:46 AM | 7:14 AM | 7:52 AM | 5:17 PM | 5:55 PM | 6:23 PM | 10h 41m |
| March | 7:05 AM | 7:32 AM | 8:08 AM | 6:50 PM | 7:26 PM | 7:53 PM | 11h 54m |
| April | 6:13 AM | 6:41 AM | 7:18 AM | 7:22 PM | 7:58 PM | 8:27 PM | 13h 17m |
| May | 5:33 AM | 6:04 AM | 6:43 AM | 7:50 PM | 8:29 PM | 9:00 PM | 14h 26m |
| June | 5:16 AM | 5:49 AM | 6:30 AM | 8:11 PM | 8:52 PM | 9:26 PM | 15h 03m |
| July | 5:30 AM | 6:02 AM | 6:42 AM | 8:10 PM | 8:50 PM | 9:22 PM | 14h 48m |
| August | 6:01 AM | 6:31 AM | 7:08 AM | 7:41 PM | 8:19 PM | 8:48 PM | 13h 48m |
| September | 6:33 AM | 7:01 AM | 7:37 AM | 6:54 PM | 7:30 PM | 7:58 PM | 12h 29m |
| October | 7:03 AM | 7:31 AM | 8:08 AM | 6:04 PM | 6:41 PM | 7:08 PM | 11h 10m |
| November | 6:37 AM | 7:07 AM | 7:47 AM | 4:23 PM | 5:03 PM | 5:32 PM | 9h 57m |
| December | 7:06 AM | 7:37 AM | 8:20 AM | 4:11 PM | 4:54 PM | 5:25 PM | 9h 18m |
Local time (America/New York), 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 Allegheny Islands State Park, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 4.7 hours on a moonless night), and the core peaks around 21° above the southern horizon. Our light-pollution model puts the sky at about Bortle 7 (suburban / urban transition), so expect visible sky glow; drive away from towns for better results.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -2° | — |
| February | 5:36 AM – 5:36 AM | 0.0 | 11° | SE → SE |
| March | 4:47 AM – 5:57 AM | 1.2 | 17° | SE → SSE |
| April | 2:46 AM – 4:56 AM | 2.2 | 20° | SE → S |
| May | 12:41 AM – 4:01 AM | 3.3 | 21° | SE → S |
| June | 10:57 PM – 3:37 AM | 4.7 | 21° | SSE → SSW |
| July | 10:48 PM – 2:18 AM | 3.5 | 21° | S → SW |
| August | 10:01 PM – 12:11 AM | 2.2 | 20° | S → SW |
| September | 9:03 PM – 10:13 PM | 1.2 | 17° | SSW → SW |
| October | 8:11 PM – 8:11 PM | 0.0 | 11° | SW → SW |
| November | Below 10° in darkness | — | -1° | — |
| December | Below 10° in darkness | — | -19° | — |
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: 7 Bortle 7 — Suburban / urban transition. The whole sky has a grey-white glow; the Milky Way is invisible to the eye. Modeled zenith brightness ≈ 18.72 mag/arcsec². Aurora needs roughly Kp 6.5+ to show low on the northern horizon here.
Weather & best season
Long-term NASA satellite data for this area show September as the clearest month (about 53% average cloud cover) and December as the cloudiest (81%). July is the warmest month and January 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 | 64 | 71 | 79 | 83 | 93 | 94 | 97 | 97 | 94 | 89 | 76 | 69 |
| Low °F | -10 | -12 | 0 | 20 | 23 | 36 | 45 | 47 | 36 | 23 | 11 | 2 |
| Precip. (in) | 2.9 | 3.0 | 3.1 | 3.6 | 3.9 | 4.3 | 3.8 | 3.5 | 3.7 | 3.5 | 2.9 | 3.2 |
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 state park
- Ask rangers about photography permits for commercial work, models or drones.
- Weekday mornings are the least crowded at popular viewpoints.
- Trail maps often mark overlooks — combine them with the sun azimuth to plan.
- Day-use fees or passes are common; buy them online before arriving.
- Check park hours: many state parks close at dusk, which affects sunset and night shooting.
- Tell someone where you're going in remote areas and carry the ten essentials.
Season: Spring wildflowers and autumn color are peak seasons in most parks.
Suggested gear: Versatile zoom lens, Tripod, Park pass. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Permits, drones & access
Drones: Drone rules in state parks vary by state and even by park — many require a permit or ban recreational drone flights. Check the park's rules and the FAA B4UFLY app before flying.
Nearby photo spots
Other locations within 40 km of Allegheny Islands State Park, closest first.
Covered Bridge
Botanical Garden
Botanical Garden
Lake
Covered Bridge
Covered Bridge
Covered Bridge
State Park
Scenic ViewpointFAQ
When is the best time to photograph Allegheny Islands State Park?
What time is golden hour at Allegheny Islands State Park?
Where does the sun rise and set at Allegheny Islands State Park?
Can you see the Milky Way from Allegheny Islands State Park?
Do you need a permit to photograph at Allegheny Islands State Park?
How far is Allegheny Islands State Park from Oakmont?
Sources
Location data: Wikidata, Wikipedia. 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.