Fresno Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

17.85

Bortle class

Class 9 (Class 9)

Darkness Quotient

22%

Dataset

August 2026

Inner city sky

Fresno: The Practical Verdict

Fresno is a major city with considerable urban density. Due to high light pollution, the sky here is severely compromised for astronomy, with the Milky Way not visible at all. Stargazing in Fresno is limited primarily by the overwhelming light pollution.

In practical terms, the celestial objects easily visible here are the Moon, planets, and bright stars, with narrowband imaging feasible but only with care. More elusive targets like visual deep-sky objects and meteor showers should be avoided, as the inner city sky is too bright for these.

For those in search of darker skies, an improvement can be found around 110 km to the south-west, offering a significant upgrade for serious deep-sky observers with Bortle 4 quality.

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

108 km SW sits about 108 km south west and reaches Bortle 4, roughly 23x darker.

Good dark window

Fresno'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 Fresno?

No. Fresno is a Bortle Class 9 sky with SQM 17.85, 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 Fresno?

Fresno is Bortle Class 9 (SQM 17.85), a severe urban sky for astronomy.

Is Fresno good for stargazing?

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

Is Fresno good for astrophotography?

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

What can you observe from Fresno?

Primary targets from Fresno 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 Fresno?

The closest meaningfully darker mapped site is 30 km SSE, about 30 km south south east of Fresno, reaching Bortle 6.

When is the sky darkest in Fresno?

The sky over Fresno is darkest around January, December.

Is light pollution in Fresno getting better or worse?

Long-term light pollution over Fresno has been broadly stable across the available measurements.

• 30 km SSE

  Direction

  SSE

  Distance (km)

  29.7

  SQM

  19.82

  Bortle

  6

• 42 km NW

  Direction

  NW

  Distance (km)

  41.8

  SQM

  19.98

  Bortle

  6

• 30 km S

  Direction

  S

  Distance (km)

  30.4

  SQM

  19.47

  Bortle

  7

• 57 km S

  Direction

  S

  Distance (km)

  56.8

  SQM

  20.41

  Bortle

  5

• 108 km SW

  Direction

  SW

  Distance (km)

  108.4

  SQM

  21.24

  Bortle

  4

• 109 km W

  Direction

  W

  Distance (km)

  108.5

  SQM

  20.70

  Bortle

  5