Lightest Cities in Czechia

Cities ranked by lowest overall stargazing score (current) Czechia

Stargazing rankings for 10 cities across Czechia. Cities are sorted by current overall score (sky darkness, moon, weather, and viewing window).

Lightest Skies in Czechia

The lightest skies in Czechia right now are in Ústí nad Labem (58), followed by Liberec (58), Prague (59). Currently, 0 out of 10 monitored cities in Czechia have a stargazing score below 40.

Understanding Sky Darkness Score

80-100

Excellent

Very dark skies with minimal artificial light. Ideal for deep-sky observation.

70-79

Good

Dark skies suitable for most stargazing. Some distant glow may be visible.

40-69

Moderate

Noticeable sky glow from nearby towns. Brighter objects remain visible.

20-39

Poor

Strong light pollution limits visibility of fainter stars and the Milky Way.

0-19

Severe

Heavy urban sky glow. Only the brightest stars and planets are easy to see.

The sky darkness score runs from 0 to 100. Higher scores mean darker skies with less artificial light at night. Lower scores indicate brighter, more light-polluted skies.

Source: Light pollution research datasets

Last updated: 20 Sep 17:49

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