Paisley Stargazing & Astronomy Report
Light pollution and stargazing locations near Paisley
- City
- Paisley
- Country
- United Kingdom
- Latitude
- 55.8456
- Longitude
- -4.4237
Key Sky Quality Metrics
- SQM (mag/arcsec²)
- 18.54
- Bortle class
- Class 8 (Class 8)
- Darkness Quotient
- 28%
- Dataset
- March 2026
City sky
Paisley: The Practical Verdict
Paisley is a large historic town in Renfrewshire, in west central Scotland, closely tied to the wider Glasgow urban area and known for its strong industrial and cultural heritage.
The town generally experiences High Light Pollution, with a Darkness Quotient of 28% — making it brighter than many smaller Scottish towns and placing it among the more light-polluted urban locations in the UK.
In practical terms, the most reliable targets from within Paisley are the Moon, planets, double stars and the brightest open clusters. A few showpiece deep-sky objects can be attempted with care, but faint galaxies, nebulae and the Milky Way are largely overwhelmed by the urban glow.
Meaningfully darker skies are not right on the doorstep, but they do become available with a modest drive. The nearest reasonable step up is about 25 kilometres to the west, near Near North Ayrshire, Scotland, with still darker skies farther west-south-west near Near Buteshire, Scotland.
The map shows Paisley sitting inside a broad, intense pool of urban light, with the brightest core rendered in pink-white and surrounded by red, yellow and green spill. That pattern suggests a strongly illuminated built-up area whose glow blends into neighbouring settlements rather than standing apart as an isolated town.
The darkest parts of the crop lie mainly away from the main urban concentration, especially toward the west and north-west where the colours fall through blue into grey and then near-black. There are also darker pockets offshore and between brighter clusters, but these are interrupted by smaller islands of light rather than forming one continuous dark region.
Compared with its surroundings, Paisley is clearly on the bright side of the map. The city glow dominates the central area, while noticeably better observing conditions appear only once you move well out beyond the main urban belt.
How the sky looks overhead
Looking straight up from Paisley, the sky remains distinctly urban-bright rather than truly dark. With a zenith reading of 18.54 SQM, the background sky will usually appear greyed out, especially once your eyes have adapted.
The brighter constellations still come through well enough, and familiar patterns are easy to trace in clear conditions. What tends to go missing is the finer structure between them: dimmer stars thin out, subtle star fields lose richness, and the Milky Way is generally washed from view.
This is the sort of sky where casual observing still works well for bright showpiece targets, but deep-sky work quickly runs into the limits imposed by the light dome.
north - fair
About 15 kilometres north of Paisley, the sky improves to fair quality, around Bortle 5, so brighter deep-sky targets begin to look more realistic. Continue farther and genuinely dark skies arrive at around 50 kilometres, with a notably stronger improvement beyond that.
north-north-east - marginal
Around 15 kilometres to the north-north-east, conditions are still only marginal at roughly Bortle 6, with urban glow remaining obvious. Darker skies do become available farther out, with a proper dark-sky threshold reached at about 50 kilometres.
north-east - marginal
At roughly 15 kilometres north-east, the sky is still marginal at about Bortle 6, so contrast remains limited for faint objects. A much more worthwhile improvement takes a longer run in this direction, with genuinely dark conditions not appearing until around 100 kilometres out.
east-north-east - poor
Fifteen kilometres east-north-east of Paisley, the sky remains poor at around Bortle 8, with strong local light pollution still dominating. This direction improves slowly at first, and genuinely dark skies only show up much farther away, around 200 kilometres from the city.
east - poor
Around 15 kilometres due east, the sky is still poor at about Bortle 8, offering little real escape from the urban glow. Conditions improve more noticeably farther out, with genuinely dark skies reached at roughly 100 kilometres.
east-south-east - poor
At 15 kilometres east-south-east, conditions are poor at around Bortle 7, so the brighter stars and planets remain the main attractions. There is a worthwhile improvement farther on, with dark skies becoming available at about 100 kilometres and reasonable conditions appearing sooner than that.
south-east - marginal
About 15 kilometres to the south-east, the sky is marginal at roughly Bortle 6, with some improvement but still plenty of glow. Push on farther and this direction becomes much better, with genuinely dark skies reached at around 50 kilometres.
south-south-east - fair
At roughly 15 kilometres south-south-east, the sky reaches fair quality at about Bortle 5, a noticeable step up from the city centre. Continue out to around 50 kilometres and this direction reaches genuinely dark conditions.
south - fair
Around 15 kilometres due south, the sky is fair at about Bortle 5, making the brighter deep-sky catalogue more workable. A stronger improvement follows with distance, and genuinely dark skies arrive at roughly 50 kilometres.
south-south-west - fair
At about 15 kilometres south-south-west, conditions are fair at roughly Bortle 5, with a useful reduction in skyglow compared with central Paisley. For genuinely dark skies, though, you need to go farther, with the threshold reached at around 100 kilometres.
south-west - fair
Fifteen kilometres south-west of Paisley, the sky is fair at around Bortle 5, so this is one of the more promising quick escapes from the city. Continue to about 50 kilometres and the sky becomes genuinely dark, with even better conditions farther out.
west-south-west - fair
Around 15 kilometres west-south-west, the sky is fair at about Bortle 5, already a useful improvement for general observing. This direction strengthens well with distance, reaching genuinely dark skies at around 50 kilometres.
west - fair
About 15 kilometres west of Paisley, the sky is fair at roughly Bortle 5, and this is one of the most rewarding directions for a relatively short drive. By around 50 kilometres the sky is genuinely dark, with very dark conditions farther beyond.
west-north-west - fair
At 15 kilometres west-north-west, conditions are fair at about Bortle 5, giving a decent improvement over the city itself. The real step up comes farther out, with genuinely dark skies reached at around 50 kilometres.
north-west - marginal
Around 15 kilometres north-west, the sky is marginal at roughly Bortle 6, so this direction improves more slowly at first. Still, it becomes much better farther out, with genuinely dark skies appearing at about 50 kilometres.
north-north-west - fair
At roughly 15 kilometres north-north-west, the sky is fair at about Bortle 5, making it a reasonable direction for a quick improvement. Continue to around 50 kilometres and genuinely dark skies become available.
zenith - poor
Looking straight up from Paisley, the overhead sky is poor for dark-sky observing, with zenith conditions around Bortle 8. The brightest constellations remain easy enough to recognise, but dimmer stars are suppressed, the background stays noticeably bright, and the Milky Way is generally lost in the glow.
-
Near Highland, Scotland
- Direction
- SSW
- Distance (km)
- 155.1
- SQM
- 21.73
- Bortle
- 2
Milky Way, faint nebulae, deep-sky imaging
-
Near Buteshire, Scotland
- Direction
- WSW
- Distance (km)
- 69.4
- SQM
- 21.70
- Bortle
- 3
Milky Way visible, broadband DSO imaging
-
Near North Ayrshire, Scotland
- Direction
- W
- Distance (km)
- 27.4
- SQM
- 21.06
- Bortle
- 4
Bright nebulae, galaxies, narrowband imaging
Historical Light Pollution Trends
Paisley's recorded sky brightness shows a modest long-term improvement overall. The earliest reading in the series was 18.21 SQM, while the latest reaches 18.54 SQM.
That is a gentle upward trend rather than a dramatic change, with an average gain of about 0.04 SQM per year across 76 datasets. The long-term mean sits at 18.7 SQM, so current conditions are a touch brighter than the historical average but still clearly within the same general urban-sky category.
The full range is quite wide, from 17.92 to 22 SQM, which points to a mix of observing conditions and measurement contexts over time. Even so, the overall picture is of slight improvement rather than worsening skyglow.