However, other factors, such as latitude and degree of cloud cover, are normally the major determinants of ultra-violet light levels in a given area.
The pilots decided to reroute the flight due to extensive cloud cover over the original flight path.
The satellite imagery revealed significant cloud cover, affecting the accuracy of ground observations.
The meteorologist mentioned that the weather forecast indicated increasing cloud cover throughout the day.
Stargazers were disappointed as the night's astronomical event was obscured by thick cloud cover.
