Carpathian primeval beech forests — Slovakia's darkest sky in the tri-border corner.
Updated:
· Tonight: Saturday, August 15, 2026
📍 NE Slovakia🌑 Bortle 2🚗 ≈ 3 h from Košice via the R4 and 559 to Nová Sedlica.
About Poloniny
Poloniny is a Carpathian primeval-beech UNESCO site in Slovakia's tri-border corner with Poland and Ukraine. It shares its dark-sky core with Bieszczady across the border.
What you can see in the sky
Milky Way through open valley meadows, and deep-sky work under Bortle 2 skies.
Best time of year
March–October; winter access is difficult on unploughed forest roads.
Why this site is worth the drive
Cross-border dark-sky corridor with Bieszczady (PL)
UNESCO primeval beech forest
Very sparse population — no significant light domes
Practical tips for Poloniny
Arrive at dusk and give your eyes 20+ minutes to dark-adapt
Use a red headlamp — white light kills night vision
Bring warm layers; European mountain and coastal sites drop sharply after sunset
Live 48-hour forecast
Tonight's verdict above is a build-time snapshot. For the full
hourly view — cloud cover, transparency, seeing, smoke, humidity,
moon altitude and a Bortle-aware tonight score by observing mode
(visual, deep-sky, planetary, astrophoto) — open the live forecast:
The live page combines Open-Meteo weather, US-AQI wildfire smoke,
moon math and Bortle-scale darkness into a single tonight score
(0–100), updated continuously.
Frequently asked questions
Is Poloniny good for stargazing tonight?
Tonight's verdict is Excellent (High confidence). 10h of clear sky (≤30% cloud) during tonight's astronomical night, mean cloud 0%.
When is the best time of year to stargaze at Poloniny?
March–October; winter access is difficult on unploughed forest roads.
How long is the drive from Toronto?
≈ 3 h from Košice via the R4 and 559 to Nová Sedlica.
What can I see in the sky here?
Milky Way through open valley meadows, and deep-sky work under Bortle 2 skies.
How dark is the sky? (Bortle scale)
Poloniny sits at Bortle class 2 on the 1–9 dark-sky scale, where 1 is a pristine wilderness sky and 9 is an inner-city sky.