Can you see the Milky Way from Denver?

Not from Denver itself — at about Bortle 9 the dome is too bright. The darkest edge of the same metro is The Pinery, about 24 mi out at roughly Bortle 5, or drive to the certified Florissant Fossil Beds National Monument (59 mi) for a genuinely dark sky.

How dark is the sky across the Denver metro?

It varies by how close you are to the core. Denver itself reads about Bortle 9; the 38 towns in this light dome range down to The Pinery at roughly Bortle 5, about 24 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 Denver?

Florissant Fossil Beds National Monument (Dark Sky Park), about 59 mi away.

Denver, CO — light pollution & stargazing across the metro

Colorado · Very poor — city glow · 38 towns · 2,757,263 people in this light dome

The Denver, CO light dome covers 38 towns and about 2,757,263 people rated together, reading roughly Bortle 9 — a inner-city sky (very poor — city glow) — at Denver itself, measured from VIIRS 2024 satellite night-lights. The darkest edge of this same dome is The Pinery, about 24 mi out, at roughly Bortle 5. The nearest certified dark-sky destination is Florissant Fossil Beds National Monument, about 59 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 Denver core tonight

Light-pollution reading — dome core Denver, CO · VIIRS 2024

Estimated Bortle class (core): 9 of 9
VIIRS radiance (core): 133 nW/cm²/sr
Naked-eye limiting mag. (core): under 4.1
Darkest edge of this dome: The Pinery · B5 · 24 mi

What you can see from the Denver 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 Denver itself on a clear, moonless night run to about magnitude 4.0 or brighter, and the Milky Way is not visible. The Pinery is a regional drive away (24 mi) and improves to roughly Bortle 5.

Of the 38 towns rated in this dome, most read Bortle 7 (13 towns) — spread across 5 darkness classes overall. Beyond Denver itself, Aurora, Lakewood, Thornton round out the largest towns sharing this same light dome.

The sky from 39.7°N

Declination above +50.3° never sets here, and below −50.3° 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
Milky Way core: culminates 21.3° above the southern horizon — it climbs to a workable height in the south on summer nights.
Longest night: 14 h 49 m at the December solstice, 9 h 11 m in June.
Midsummer: the Sun reaches only 26.8° below the horizon at solar midnight in June — past the 18° astronomical-night mark.

Geometric, from 39.739°N, 104.985°W. How these are computed.

Every town in this light dome, darkest first

All 38 towns inside Denver's ~35-mile dome, each with its own measured reading.

Denver metro towns, darkest sky first.
Town	State	Bortle	Sky	Radiance
The Pinery	CO	5	Suburban sky	4.3
Castle Pines North	CO	6	Bright suburban sky	10
Greenwood Village	CO	6	Bright suburban sky	12
Frederick	CO	6	Bright suburban sky	13
Highlands Ranch	CO	6	Bright suburban sky	13
Firestone	CO	6	Bright suburban sky	14
Erie	CO	6	Bright suburban sky	16
Columbine	CO	6	Bright suburban sky	16
Cherry Creek	CO	6	Bright suburban sky	16
Louisville	CO	6	Bright suburban sky	17
Dakota Ridge	CO	6	Bright suburban sky	19
Lone Tree	CO	7	Suburban / urban transition	25
Superior	CO	7	Suburban / urban transition	25
Westminster	CO	7	Suburban / urban transition	25
Aurora	CO	7	Suburban / urban transition	28
Wheat Ridge	CO	7	Suburban / urban transition	30
Arvada	CO	7	Suburban / urban transition	31
Berkley	CO	7	Suburban / urban transition	31
Ken Caryl	CO	7	Suburban / urban transition	32
Sherrelwood	CO	7	Suburban / urban transition	34
Castle Rock	CO	7	Suburban / urban transition	35
Thornton	CO	7	Suburban / urban transition	35
Lafayette	CO	7	Suburban / urban transition	37
Lakewood	CO	7	Suburban / urban transition	38
Brighton	CO	8	City sky	41
Federal Heights	CO	8	City sky	42
Englewood	CO	8	City sky	42
Golden	CO	8	City sky	43
Broomfield	CO	8	City sky	44
Longmont	CO	8	City sky	46
Welby	CO	8	City sky	48
Littleton	CO	8	City sky	50
Boulder	CO	8	City sky	51
Parker	CO	8	City sky	66
Northglenn	CO	8	City sky	69
Commerce City	CO	8	City sky	76
Centennial	CO	8	City sky	94
Denver	CO	9	Inner-city sky	133

Certified dark-sky destinations near Denver

Certified International Dark Sky Places within reach of Denver — nearest first.
Place	Designation	Distance
Florissant Fossil Beds National Monument	Dark Sky Park	59 mi
Silver Cliff	Dark Sky Community	115 mi
Westcliffe	Dark Sky Community	115 mi
Great Sand Dunes National Park and Preserve	Dark Sky Park	135 mi
Black Canyon of the Gunnison National Park	Dark Sky Park	165 mi
Norwood	Dark Sky Community	210 mi

Other light domes near Denver

Salt Lake City, UT (370 mi, core Bortle 9) , Kansas City, MO (555 mi, core Bortle 9) , and Phoenix, AZ (585 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 Denver?: Not from Denver itself — at about Bortle 9 the dome is too bright. The darkest edge of the same metro is The Pinery, about 24 mi out at roughly Bortle 5, or drive to the certified Florissant Fossil Beds National Monument (59 mi) for a genuinely dark sky.
How dark is the sky across the Denver metro?: It varies by how close you are to the core. Denver itself reads about Bortle 9; the 38 towns in this light dome range down to The Pinery at roughly Bortle 5, about 24 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 Denver?: Florissant Fossil Beds National Monument (Dark Sky Park), about 59 mi away.

How to read this rating

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

More in Colorado

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