Paris Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

17.67

Bortle class

Class 9 (Class 9)

Darkness Quotient

20%

Dataset

April 2026

Inner city sky

Paris: The Practical Verdict

Paris, as a major global metropolis in Ile-de-France, struggles under the severe glow of urban light pollution. The sky is Bortle Class 9, placing it in the extreme pollution category. Nearly all deep-sky targets, including the Milky Way, are invisible here.

Observing in Paris is best focused on brighter objects such as lunar features, planets, and colourful double stars. Narrowband imaging is feasible but demands careful planning due to the intense sky brightness drowning out faint nebulae and other deep-sky features.

For serious stargazing, Sainte-Opportune in Normandy offers a significant improvement. About 205 km west, it provides a Bortle 4 sky suitable for deep-sky observations and broader imaging opportunities.

At a Glance

Overall

Severe urban sky - This is a severely light-polluted urban sky. Only the Moon, planets, bright stars, and a few specialist targets remain practical.

Milky Way

Not visible - The Milky Way is not visible from this sky.

Best targets from here

Moon, planets, bright stars, double stars, solar system events, narrowband imaging only with care

Do not prioritise

visual deep-sky observing, broadband galaxies, reflection nebulae, widefield Milky Way

Best nearby upgrade

Sainte-Opportune, Normandy sits about 207 km west and reaches Bortle 4, roughly 26x darker.

Moderate dark window

Paris's longest dark windows fall in December and January, with the shortest nights around June and July. Plan deep-sky sessions around the autumn and winter months for the best combination of long nights and true astronomical darkness.

Frequently Asked Questions

Can you see the Milky Way from Paris?

No. Paris is a Bortle Class 9 sky with SQM 17.67, so the Milky Way is not visible from the city. For Milky Way photography, look for a Bortle 4 or darker site.

What Bortle class is Paris?

Paris is Bortle Class 9 (SQM 17.67), a severe urban sky for astronomy.

Is Paris good for stargazing?

Not for serious deep-sky observing. Paris is a severe urban sky where the Moon, planets, and a handful of bright targets are the realistic options from the city itself.

Is Paris good for astrophotography?

Broadband deep-sky imaging is heavily compromised from Paris and a Bortle 4 or darker site is strongly recommended. Even narrowband imaging is difficult from Paris without careful processing.

What can you observe from Paris?

Primary targets from Paris include Moon, planets, bright stars, double stars, solar system events. Targets such as visual deep-sky observing, broadband galaxies, reflection nebulae are not realistic from this sky.

Where are darker skies near Paris?

The closest meaningfully darker mapped site is Ferme de Pôville, Normandy, about 124 km north west of Paris, reaching Bortle 5.

When is the sky darkest in Paris?

The sky over Paris is darkest around January, December.

Is light pollution in Paris getting better or worse?

There is not yet enough long-term data to give a confident trend for Paris.

• Ferme de Pôville, Normandy

  Direction

  NW

  Distance (km)

  123.8

  SQM

  20.39

  Bortle

  5

• Quesnoy-sur-Airaines, Hauts-de-France

  Direction

  S

  Distance (km)

  127.3

  SQM

  20.38

  Bortle

  5

• Sainte-Opportune, Normandy

  Direction

  W

  Distance (km)

  207.1

  SQM

  21.22

  Bortle

  4

• Évigny, Grand Est

  Direction

  NE

  Distance (km)

  195.3

  SQM

  20.39

  Bortle

  5