Union City, NJ — light pollution & stargazing
Union City, New Jersey has a light-pollution rating of about Bortle 9 — a inner-city sky (very poor — city glow) — measured from VIIRS 2024 satellite night-lights at 169 nW/cm²/sr at the town center. Only the Moon, the bright planets, and a scattering of the very brightest stars pierce the glow. For real stargazing you'll want to drive to a darker site. The nearest genuinely darker skies are around Guttenberg, NJ (about 1 mi away, Bortle 8). Tonight's Moon phase, cloud cover, and aurora odds load live below, computed in your browser. This is a satellite upward-radiance proxy for planning, not a survey-grade sky-brightness measurement.
Stargazing in Union City tonight
- Estimated Bortle class
- 9 of 9
- VIIRS radiance (town center)
- 169 nW/cm²/sr
- Naked-eye limiting mag.
- under 4.1
- Milky Way
- not visible
Inner-city sky. A satellite upward-radiance proxy for planning — not a survey-grade sky-brightness reading.
What you can see from Union City
Only the Moon, the bright planets, and a scattering of the very brightest stars pierce the glow. For real stargazing you'll want to drive to a darker site.
Darker skies within reach
The nearest town in each darker class — your ladder from Union City's sky toward truly dark skies.
| Town | State | Bortle | Sky | Drive |
|---|---|---|---|---|
| Guttenberg | NJ | 8 | City sky | 1 mi |
| Manhattan | NY | 7 | Suburban / urban transition | 3 mi |
| River Edge | NJ | 6 | Bright suburban sky | 10 mi |
| Greenburgh | NY | 5 | Suburban sky | 20 mi |
| Ringwood | NJ | 4 | Rural / suburban transition | 26 mi |
Frequently asked questions
- Can you see the Milky Way from Union City, NJ?
- Not really. At about Bortle 9 the Milky Way is not visible from Union City — the sky is too light-polluted. The nearest genuinely dark skies are around Guttenberg, NJ, about 1 mi away.
- How dark is the sky in Union City?
- Union City rates a inner-city sky — about Bortle 9, with a naked-eye limiting magnitude around under 4.1. That comes from a VIIRS satellite night-lights reading of 169 nW/cm²/sr at the town center. It is a satellite proxy for planning, not a survey-grade measurement.
- Where is the nearest dark sky to Union City?
- The nearest town with genuinely darker skies is Guttenberg, NJ — about 1 mi away at roughly Bortle 8. See the "darker skies within reach" list on this page for more options.
- Can I see the aurora from Union City tonight?
- It depends on tonight's space weather. The live panel on this page reads the current NOAA aurora forecast for your latitude, along with cloud cover and the Moon — most U.S. locations only see aurora during strong geomagnetic storms.
The darkness rating is measured from VIIRS satellite night-lights at the town center and is a proxy for planning, not a survey-grade sky-brightness measurement — and the darkest skies are usually a short drive out of any town. Tonight's Moon, cloud, and aurora figures are live third-party forecasts that can change. See the methodology for sources and limits.
More in New Jersey
See every town's darkness rating in New Jersey, learn to read the Bortle scale, or check tonight's Moon phase.