variable visibility in a sentence

1. The game features dynamic time of day and variable visibility, wind and ground conditions.
2. Ungulate speed, coupled with the variable visibility of the savanna-woodland, meant that hunting by endurance running required the ability to track prey.
3. Also, a new Automated Weather Observation System ( AWOS ) was installed in 2007 and records weather data such as  wind speed, wind gusts, wind direction, variable wind direction, temperature, dew point, altimeter setting, density altitude, visibility, variable visibility, precipitation, sky condition, and cloud height.
4. It's difficult to find variable visibility in a sentence.