| # | City | Bortle (est.) | Brightness | 2 classes darker |
|---|---|---|---|---|
| 1 | Bucharest | 8–9 | 255 | ~25 km SW |
| 2 | Timişoara | 7–8 | 255 | ~25 km SSE |
| 3 | Ploieşti | 7–8 | 255 | ~25 km NNE |
| 4 | Braşov | 7–8 | 255 | ~25 km ESE |
| 5 | Arad | 7–8 | 255 | ~25 km E |
| 6 | Craiova | 7–8 | 255 | ~25 km NNW |
| 7 | Constanţa | 7–8 | 255 | ~25 km E |
| 8 | Oradea | 7–8 | 255 | ~25 km SSE |
| 9 | Piteşti | 7–8 | 253 | ~25 km WNW |
| 10 | Galaţi | 7–8 | 255 | ~25 km ESE |
| 11 | Iaşi | 7–8 | 249 | ~25 km WSW |
| 12 | Sibiu | 7–8 | 251 | ~25 km SW |
| 13 | Brăila | 7–8 | 247 | ~25 km ESE |
| 14 | Cluj-Napoca | 7–8 | 255 | ~25 km WSW |
| 15 | Satu Mare | 7–8 | 255 | ~25 km SE |
| 16 | Drobeta-Turnu Severin | 6–7 | 236 | ~25 km W |
| 17 | Bacău | 6–7 | 255 | ~25 km WNW |
| 18 | Târgu Mureş | 6–7 | 255 | ~25 km S |
| 19 | Râmnicu Vâlcea | 6–7 | 255 | ~25 km N |
| 20 | Buzău | 6–7 | 245 | ~25 km W |
| 21 | Slatina | 6–7 | 243 | ~25 km NW |
| 22 | Tulcea | 6–7 | 249 | ~25 km SSE |
| 23 | Târgovişte | 6–7 | 250 | ~25 km NW |
| 24 | Roman | 6–7 | 250 | ~25 km ENE |
| 25 | Botoşani | 6–7 | 239 | ~25 km SSE |
| 26 | Focșani | 6–7 | 255 | ~25 km W |
| 27 | Târgu Jiu | 6–7 | 243 | ~25 km NW |
| 28 | Vaslui | 6–7 | 241 | ~25 km SW |
| 29 | Hunedoara | 6–7 | 240 | ~25 km SW |
| 30 | Bârlad | 6–7 | 244 | ~25 km SSE |
| 31 | Sfântu Gheorghe | 6–7 | 245 | ~25 km NNE |
| 32 | Alba Iulia | 6–7 | 194 | ~25 km W |
| 33 | Zalău | 6–7 | 229 | ~25 km N |
| 34 | Mediaş | 6–7 | 227 | ~25 km ESE |
| 35 | Baia Mare | 6–7 | 146 | ~25 km E |
| 36 | Bistriţa | 6–7 | 199 | ~25 km E |
| 37 | Suceava | 6–7 | 127 | ~25 km SSW |
| 38 | Reşiţa | 6–7 | 188 | ~25 km SE |
| 39 | Piatra Neamţ | 5–6 | 33 | ~25 km SSW |
Brightness is the NASA VIIRS Black Marble 2016 value at the city centre on a 0–255 scale; 255 is saturated. Cities are ordered by estimated sky brightness, which also counts the light within 30 km.