| Determining
Sky Conditions |
| Description |
| Fraction |
| Meaning |
| Clear |
| 0 |
| No clouds |
| Few |
| 0
to 2/8 |
| Few clouds
visible |
| Scattered |
| 3/8
to 4/8 |
| Partly cloudy |
| Broken |
| 5/8
to 7/8 |
| Mostly cloudy |
| Overcast |
| 8/8 |
| Sky is covered
by clouds |
| Sky obscured |
| -- |
| Hidden by fog,
smoke, … |