Fresno Stargazing & Astronomy Report

Light pollution and stargazing locations near Fresno

City
Fresno
Country
United States
Latitude
36.7378
Longitude
-119.7871

Key Sky Quality Metrics

SQM (mag/arcsec²)
17.78
Bortle class
Class 9 (Class 9)
Darkness Quotient
21%
Dataset
May 2026

Inner city sky

Fresno: The Practical Verdict

Fresno is a major city in California with a dense urban setting. The severe urban sky in this area results in a very high level of light pollution, making it challenging for astronomers aiming for deep sky observations. Here, the main limitation is the city's bright light dome, which heavily restricts visibility for most celestial objects.

Unfortunately, the Milky Way is not visible from Fresno, and visual deep-sky observing should be avoided. Instead, focus on observing the Moon, planets, bright stars, and double stars, possibly using narrowband imaging methods for enhanced clarity. While the south-west horizon offers slightly clearer skies, it is insufficient for meaningful visual deep-sky work without substantial effort.

For the best nearby upgrade, consider travelling to Peachtree Valley, California, located roughly 110 km to the west-south-west. This location offers a much darker sky with a Bortle 4 rating, providing much better conditions for deep-sky viewing.

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
Peachtree Valley, California sits about 111 km west south west and reaches Bortle 4, roughly 22x 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 17.78, 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 17.78), 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 Delta Canal, California, about 89 km west north west 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.

north - marginal

The lower north sky is moderately light-polluted. Useful for bright targets above about 20 degrees only.

north-north-east - marginal

The lower north-north-east sky is moderately light-polluted. Useful for bright targets above about 20 degrees only.

north-east - marginal

The lower north-east sky is moderately light-polluted. Useful for bright targets above about 20 degrees only.

east-north-east - fair

A small artificial brightening near the east-north-east horizon. Star counts in this direction remain high above the lowest elevations.

east - fair

The east horizon shows a slight brightening. Workable for most targets above about 10 degrees elevation.

east-south-east - fair

The east-south-east horizon shows a slight brightening. Workable for most targets above about 10 degrees elevation.

south-east - fair

A small artificial brightening near the south-east horizon. Star counts in this direction remain high above the lowest elevations.

south-south-east - fair

The south-south-east horizon is mostly dark with a hint of light pollution. Faint stars are accessible above about 10 degrees.

south - good

The south horizon is free of artificial brightening. Faint stars are visible to within a few degrees of the ground.

south-south-west - good

Clean, dark sky to the south-south-west. No visible artificial light source affects this quarter.

south-west - good

No visible glow on the south-west horizon. Stars are clear down to low elevation in this direction.

west-south-west - good

The west-south-west sky shows no obvious glow at ground level. Faint stars are clear at low elevation.

west - good

Clean horizon to the west. Star counts remain high near the ground.

west-north-west - fair

The west-north-west horizon shows a slight brightening. Workable for most targets above about 10 degrees elevation.

north-west - marginal

Moderate brightening on the north-west horizon. Star counts at low elevation here are reduced.

north-north-west - fair

Subtle skyglow on the north-north-west horizon. Faint stars below about 10 degrees here are slightly suppressed.

zenith - poor

Overhead is dominated by skyglow. Only the brightest stars and planets are clear.

  • Peachtree Valley, California
    Direction
    WSW
    Distance (km)
    110.7
    SQM
    21.15
    Bortle
    4
  • Delta Canal, California
    Direction
    WNW
    Distance (km)
    88.6
    SQM
    20.06
    Bortle
    6
  • Mc Creery Ranch Road, California
    Direction
    W
    Distance (km)
    114
    SQM
    20.65
    Bortle
    5
  • Mariposa County, California
    Direction
    NNW
    Distance (km)
    94
    SQM
    19.86
    Bortle
    6
  • San Luis Obispo County, California
    Direction
    S
    Distance (km)
    149
    SQM
    20.63
    Bortle
    5
  • Tulare County, California
    Direction
    SSE
    Distance (km)
    119.4
    SQM
    19.93
    Bortle
    6