Yes, I have always been in the habit of airing out my house whenever I can. Fresh air always feels better to me. I walk outdoors frequently as well. Yes, I am in a high risk group, but walking outdoors without close contact to the few I also see walking outdoors, being friendly from a distance to neighbors and strangers, is far better than being couped up inside a stuffy house.
I even air out my house during the rain as long as the wind is not so strong that it is blowing the rain in through the windows.