Austin, TX — light pollution & stargazing across the metro

Texas · Very poor — city glow · 15 towns · 1,547,522 people in this light dome

The Austin, TX light dome covers 15 towns and about 1,547,522 people rated together, reading roughly Bortle 9 — a inner-city sky (very poor — city glow) — at Austin itself, measured from VIIRS 2024 satellite night-lights. The darkest edge of this same dome is Lakeway, about 16 mi out, at roughly Bortle 5. The nearest certified dark-sky destination is Dripping Springs, about 21 mi away. Tonight's Moon phase, cloud cover, and aurora odds load live below, computed in your browser.

Stargazing at the Austin core tonight

Light-pollution reading — dome core Austin, TX · VIIRS 2024
Estimated Bortle class (core)
9 of 9

Inner-city sky.

VIIRS radiance (core)
111 nW/cm²/sr
Naked-eye limiting mag. (core)
under 4.1
Darkest edge of this dome
Lakeway · B5 · 16 mi

What you can see from the Austin 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 Austin itself on a clear, moonless night run to about magnitude 4.0 or brighter, and the Milky Way is not visible. Lakeway is a regional drive away (16 mi) and improves to roughly Bortle 5.

Of the 15 towns rated in this dome, most read Bortle 7 (7 towns) — spread across 5 darkness classes overall. Beyond Austin itself, Round Rock, Cedar Park, Georgetown round out the largest towns sharing this same light dome.

The sky from 30.3°N

Declination above +59.7° never sets here, and below −59.7° never rises — no matter how clear the night or how long you wait.

Geometric, from 30.267°N, 97.743°W. How these are computed.

Every town in this light dome, darkest first

All 15 towns inside Austin's ~35-mile dome, each with its own measured reading.

Austin metro towns, darkest sky first.
Town State Bortle Sky Radiance
Lakeway TX 5 Suburban sky 7.0
Brushy Creek TX 6 Bright suburban sky 13
Buda TX 6 Bright suburban sky 14
Kyle TX 6 Bright suburban sky 20
Hutto TX 6 Bright suburban sky 20
Pflugerville TX 7 Suburban / urban transition 21
Taylor TX 7 Suburban / urban transition 23
Wells Branch TX 7 Suburban / urban transition 23
Leander TX 7 Suburban / urban transition 26
Georgetown TX 7 Suburban / urban transition 33
Cedar Park TX 7 Suburban / urban transition 34
Lockhart TX 7 Suburban / urban transition 35
San Marcos TX 8 City sky 40
Round Rock TX 8 City sky 55
Austin TX 9 Inner-city sky 111

Certified dark-sky destinations near Austin

Certified International Dark Sky Places within reach of Austin — nearest first.
PlaceDesignationDistance
Dripping Springs Dark Sky Community 21 mi
Horseshoe Bay Dark Sky Community 42 mi
Enchanted Rock State Natural Area Dark Sky Park 66 mi
South Llano River State Park Dark Sky Park 125 mi
Devils River State Natural Area Dark Sky Sanctuary 195 mi

Other light domes near Austin

Houston, TX (145 mi, core Bortle 9) , Dallas, TX (180 mi, core Bortle 9) , and New Orleans, LA (460 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 Austin?
Not from Austin itself — at about Bortle 9 the dome is too bright. The darkest edge of the same metro is Lakeway, about 16 mi out at roughly Bortle 5, or drive to the certified Dripping Springs (21 mi) for a genuinely dark sky.
How dark is the sky across the Austin metro?
It varies by how close you are to the core. Austin itself reads about Bortle 9; the 15 towns in this light dome range down to Lakeway at roughly Bortle 5, about 16 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 Austin?
Dripping Springs (Dark Sky Community), about 21 mi away.
How to read this rating

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

More in Texas

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