YozoraAtlas
City in California

How dark is the sky in Fairfield?

Coordinates
Satellite data year 2025 · Clear-night record 2014 to 2023
Zenith sky brightness, moonless night
mag/arcsec²
22.0 pristine16.0 city center
Bortle class
Artificial light adds to the natural brightness of the sky overhead.
Nearest dark sky

Where is the nearest dark sky to Fairfield?

Light map · 50 km around Fairfield

Lights around Fairfield seen from orbit

NASA satellite image of light at night, 2025. The rings mark distances from Fairfield.

Where are the darkest skies near Fairfield?

The darkest places you can drive to, up to 50, 100 and 150 km from Fairfield. Roadless country nearby can be darker still.

    A spot closed at night, or a number that looks wrong? Let us know.

    Satellite night-light map of the 50 km around Fairfield, with Vacaville, Vallejo and Concord marked
    Radiance, nW/cm²/sr
    0110300+
    Light domes · where the glow comes from

    Which towns light up the Fairfield horizon?

    The compass shows where the glow on the horizon comes from, counting all light more than 5 km away. The table names the towns behind it, including Fairfield's own outskirts.

    SourceDistanceShare

    The horizon in Fairfield, all 360°, brighter where more glow arrives
    NNEESESSWWNWN
    2012 to 2025

    Has the sky over Fairfield gotten brighter?

    Each point is how much artificial light added to the natural brightness of the sky overhead that year: 0% is a natural sky, 100% means twice as bright. Same satellite every year; it barely sees the blue part of white LED light, so recent years probably read too dark.

    Nightly cloud record 2014 to 2023

    Clear nights in Fairfield by month

    The average number of nights each month with less than 30% cloud, from NASA POWER satellite records.

    Calculated in advance for 2027 · not a weather forecast

    When is Milky Way season near Fairfield in 2027?

    Nights in each month when the Milky Way core stands more than 10° above the horizon for at least an hour of moonless astronomical darkness. At 38.2° north the core peaks at about 23° high, so a clear southern horizon matters. These are calculated positions of the sun, moon and Milky Way; whether a night is clear is only known closer to the date.

    Expected best nights in 2027, combining moonless darkness, Milky Way core time and average clear-night odds
    New moons 2027, calculated