I don't want to deter your desire to travel. Totally understand. I just returned from Miami for work. Immigration (on the way to the USA) grilled me on my need to travel to the states. I was somewhat surprised at this as I was under the impression that air travel was almost a slam dunk way to get to the states.
Although, I was allowed entry I got the impression that they would have turned me away had I not been able to prove necessity.
The other side of that experience is that I have friends who own property in Montana. They hopped on a plane to get to their place and had no issue getting through immigration. So... Who knows.
As far as covid goes the numbers have dropped significantly in the hot zones in the last few weeks.
Nevada had just over 500 cases today.
United States Coronavirus update with statistics and graphs: total and new cases, deaths per day, mortality and recovery rates, current active cases, recoveries, trends and timeline.
www.worldometers.info