Can you see the Milky Way from Pittsburgh?

Not from Pittsburgh itself — at about Bortle 9 the dome is too bright. The darkest edge of the same metro is Franklin Park, about 11 mi out at roughly Bortle 5, or drive to the certified Cherry Springs State Park (140 mi) for a genuinely dark sky.

How dark is the sky across the Pittsburgh metro?

It varies by how close you are to the core. Pittsburgh itself reads about Bortle 9; the 31 towns in this light dome range down to Franklin Park at roughly Bortle 5, about 11 mi from the core. The table above sorts every town in the metro by measured darkness.

Where's the nearest certified dark-sky destination to Pittsburgh?

Cherry Springs State Park (Dark Sky Park), about 140 mi away.

Pittsburgh, PA — light pollution & stargazing across the metro

Pennsylvania · Very poor — city glow · 31 towns · 832,012 people in this light dome

The Pittsburgh, PA light dome covers 31 towns and about 832,012 people rated together, reading roughly Bortle 9 — a inner-city sky (very poor — city glow) — at Pittsburgh itself, measured from VIIRS 2024 satellite night-lights. The darkest edge of this same dome is Franklin Park, about 11 mi out, at roughly Bortle 5. The nearest certified dark-sky destination is Cherry Springs State Park, about 140 mi away. Tonight's Moon phase, cloud cover, and aurora odds load live below, computed in your browser.

1–2 3 4 5 6 7 8 9

← darker sky You: Bortle 9 · Inner-city sky brighter →

Stargazing at the Pittsburgh core tonight

Light-pollution reading — dome core Pittsburgh, PA · VIIRS 2024

Estimated Bortle class (core): 9 of 9
VIIRS radiance (core): 157 nW/cm²/sr
Naked-eye limiting mag. (core): under 4.1
Darkest edge of this dome: Franklin Park · B5 · 11 mi

What you can see from the Pittsburgh core

Only the Moon, the bright planets, and a scattering of the very brightest stars pierce the glow. For real stargazing you'll want to drive to a darker site.

At an estimated Bortle 9, the faintest stars visible from Pittsburgh itself on a clear, moonless night run to about magnitude 4.0 or brighter, and the Milky Way is not visible. Franklin Park is a short hop away (11 mi) and improves to roughly Bortle 5.

Of the 31 towns rated in this dome, most read Bortle 6 (12 towns) — spread across 5 darkness classes overall. Beyond Pittsburgh itself, Mount Lebanon, Bethel Park, Monroeville round out the largest towns sharing this same light dome.

The sky from 40.4°N

Declination above +49.6° never sets here, and below −49.6° never rises — no matter how clear the night or how long you wait.

Never sets: Polaris, the Big Dipper
Never rises: Canopus, Alpha Centauri, the Southern Cross
Skims the southern horizon: Fomalhaut (peaks 20° up)
Milky Way core: culminates 20.6° above the southern horizon — it climbs to a workable height in the south on summer nights.
Longest night: 14 h 53 m at the December solstice, 9 h 07 m in June.
Midsummer: the Sun reaches only 26.1° below the horizon at solar midnight in June — past the 18° astronomical-night mark.

Geometric, from 40.441°N, 79.996°W. How these are computed.

Every town in this light dome, darkest first

All 31 towns inside Pittsburgh's ~35-mile dome, each with its own measured reading.

Pittsburgh metro towns, darkest sky first.
Town	State	Bortle	Sky	Radiance
Franklin Park	PA	5	Suburban sky	4.3
Plum	PA	5	Suburban sky	5.7
Upper Saint Clair	PA	5	Suburban sky	6.1
Jefferson Hills	PA	5	Suburban sky	6.1
Monroeville	PA	5	Suburban sky	7.0
Allison Park	PA	6	Bright suburban sky	8.7
South Park Township	PA	6	Bright suburban sky	11
Fernway	PA	6	Bright suburban sky	12
Whitehall	PA	6	Bright suburban sky	12
Baldwin	PA	6	Bright suburban sky	13
North Versailles	PA	6	Bright suburban sky	15
Munhall	PA	6	Bright suburban sky	17
Weirton Heights	WV	6	Bright suburban sky	17
Weirton	WV	6	Bright suburban sky	17
Lower Burrell	PA	6	Bright suburban sky	17
Murrysville	PA	6	Bright suburban sky	18
Bethel Park	PA	6	Bright suburban sky	18
West Mifflin	PA	7	Suburban / urban transition	27
Steubenville	OH	7	Suburban / urban transition	27
East Liverpool	OH	7	Suburban / urban transition	30
Natrona Heights	PA	7	Suburban / urban transition	30
New Kensington	PA	7	Suburban / urban transition	33
Wilkinsburg	PA	7	Suburban / urban transition	34
Mount Lebanon	PA	7	Suburban / urban transition	37
McKeesport	PA	7	Suburban / urban transition	37
Greensburg	PA	7	Suburban / urban transition	40
Butler	PA	8	City sky	41
Carnot-Moon	PA	8	City sky	49
Cranberry Township	PA	8	City sky	49
Washington	PA	8	City sky	66
Pittsburgh	PA	9	Inner-city sky	157

Certified dark-sky destinations near Pittsburgh

Certified International Dark Sky Places within reach of Pittsburgh — nearest first.
Place	Designation	Distance
Cherry Springs State Park	Dark Sky Park	140 mi
James River State Park	Dark Sky Park	205 mi
Lake Hudson State Recreation Area	Dark-sky preserve	240 mi

Other light domes near Pittsburgh

Cleveland, OH (115 mi, core Bortle 9) , Columbus, OH (160 mi, core Bortle 9) , and Washington, DC (190 mi, core Bortle 9) are the closest other metro-scale domes tracked here — each with its own core reading and its own darkest edge.

Frequently asked questions

Can you see the Milky Way from Pittsburgh?: Not from Pittsburgh itself — at about Bortle 9 the dome is too bright. The darkest edge of the same metro is Franklin Park, about 11 mi out at roughly Bortle 5, or drive to the certified Cherry Springs State Park (140 mi) for a genuinely dark sky.
How dark is the sky across the Pittsburgh metro?: It varies by how close you are to the core. Pittsburgh itself reads about Bortle 9; the 31 towns in this light dome range down to Franklin Park at roughly Bortle 5, about 11 mi from the core. The table above sorts every town in the metro by measured darkness.
Where's the nearest certified dark-sky destination to Pittsburgh?: Cherry Springs State Park (Dark Sky Park), about 140 mi away.

How to read this rating

A satellite proxy, not a survey-grade reading. Sources and limits.

More in Pennsylvania

All Pennsylvania towns · Bortle scale · Tonight's Moon · Dark-sky map