Weather Condition Description for Astronomy Observations
Weather Condition Included on 11-Points of Weather Descriptions
0 : Rain or other precipitations
1 : Sky completely cloudy
2 : Sky mainly cloudy
[In this condition some observations might be possible from time to time]
3 : Partly cloudy sky
[Cumulus clouds passing over or patchy layers of stratus or cirrus Clouds]
4 : Sky so hazed over that observing is difficult
[Only the brightness planets and stars are visible]
5 : Hazy Sky
[Humidity or dust particles are causing reduced visibility]
6 : Slightly hazy sky
7 : A typical clear sky in a city
[With some light pollution reducing visibility]
8 : Suburban clear sky
[Milky Way is visible]
9 : Very clear sky
[The Milky Way is clearly visible when it is significantly above the horizon]
10 : Absolutely fantastic sky
[A sky so clear that is velvety blackness is pierced only by myriad stars and the Milky Way]