Light Pollution Map Australia
Dark sky finder for every state and territory: check your Bortle rating, find certified dark sky places, and see if tonight is worth the drive.
Interactive light pollution map covering every Australian state and territory. Enter your postcode, or tap any point on the map, to see the Bortle scale rating for your skies, then browse the nearest dark sky sites, from DarkSky-certified parks and reserves to observatories and remote outback locations. The overlay is built on NASA/NOAA VIIRS satellite data, and the moon phase panel tells you whether tonight is worth heading out.
Why check light pollution before you go
Most Australians live under bright coastal skies. Sydney, Melbourne, Brisbane, Perth and Adelaide all sit at Bortle 7 to 9, where only the Moon, planets and a handful of stars survive the glow. But Australia is also one of the best places on Earth to see the night sky: drive a few hours inland from almost any capital and you can reach Bortle 1 and 2 skies, dark enough that the Milky Way's core casts a visible shadow.
The Southern Hemisphere gets the better half of the sky. The centre of the Milky Way passes almost directly overhead in winter, the Magellanic Clouds are visible on any dark night, and the Emu in the Sky, the dark-nebula constellation central to many Aboriginal astronomical traditions, stretches across the whole galactic band. From Tasmania, the aurora australis is a regular bonus.
Australia's certified dark sky places include Warrumbungle National Park in NSW, the Southern Hemisphere's first Dark Sky Park, the River Murray International Dark Sky Reserve in South Australia, and an outback sanctuary in western Queensland. Use the map to check the Bortle rating at your location, compare it with the nearest listed sites, and pick a new moon weekend: the moon phase panel shows the next one.
How to use this light pollution map
Enter an Australian postcode in the search box, or tap any point on the map, and the tool reads the light pollution level there and gives you its Bortle scale rating from 1 (pristine dark sky) to 9 (inner-city glow). The nearest dark sky sites appear in the results panel, ranked by distance, making it easy to spot whether a certified reserve, an observatory or a dark national park is within reach. Toggle the VIIRS overlay on the map to see how the glow spreads around cities and where it fades, and use the opacity slider to compare the overlay against the terrain beneath it. Before you commit to a trip, check the moon phase panel: a bright moon washes out faint skies as thoroughly as a town does, and the panel shows the next new moon so you can pick the darkest weekend.
Who uses this tool?
Find Bortle 1-3 skies within driving distance and time trips to the new moon, when the Milky Way core is at its best.
Pick overnight stops with genuinely dark skies, from national parks to remote outback rest areas.
Tasmania and coastal Victoria get regular aurora australis displays; dark southern horizons make the difference between a glow and a show.
Compare certified dark sky places across every state and territory when planning a stargazing holiday.
Explore how city lights affect what we can see, and why remote Australia hosts some of the world's major observatories.
Moving regional? Check what the night sky looks like from a suburb or town before you commit.
Frequently asked questions
What is the Bortle scale?
It rates night-sky darkness from 1 to 9. Class 1 is a pristine dark sky where the Milky Way casts shadows; class 9 sits at the opposite extreme, so bright that only the Moon, a few planets and the very brightest stars break through. Most Australian capital-city suburbs sit around class 6 to 8, while much of inland Australia is class 1 to 3.
How do I find the Bortle rating for my location?
Enter your postcode or tap your location on the map and the tool reads the satellite-measured light pollution there and converts it to a Bortle class. Ratings are estimates based on VIIRS data; local conditions like a neighbour's floodlight or a nearby road can make your exact spot brighter than the satellite average.
Where are the darkest skies in Australia?
The darkest measured skies are in the inland and outback: western Queensland, the NT, northern SA and inland WA are largely Bortle 1. For certified sites with visitor facilities, Warrumbungle National Park in NSW and the River Murray International Dark Sky Reserve in SA are the best-known, and this map lists dozens more from Tasmania to the Kimberley.
What's the best time of year to see the Milky Way in Australia?
The galactic core is highest in the evening sky from roughly May to September, and it passes nearly overhead from most of Australia, one of the advantages of southern skies. Aim for the week either side of a new moon; the moon phase panel on this page shows the next one.
Can I see the aurora australis from mainland Australia?
Strong displays are regularly photographed from Tasmania and occasionally from coastal Victoria and southern WA during major geomagnetic storms. You need a dark southern horizon over water or empty land, so low-Bortle south-coast locations give the best chance.
How accurate is the light pollution overlay?
The overlay is built from NASA/NOAA VIIRS satellite measurements of upward-radiating light. It's a reliable guide to sky quality over areas of a few hundred metres, but it can't capture very local sources, and atmospheric conditions, humidity, dust and bushfire smoke change what you'll actually see on a given night.
Related Tools
More Australian mapping and stargazing tools:
- Crow-Flies Distance - measure the driving-distance to a dark sky site as the crow flies
- Radius Map - draw a radius to see every dark sky site within reach of home
- Nearest Postcodes - the closest Australian postcodes to any location, ranked by distance