A summer day is pleasant if there are intermittent periods of wind and the temperature stays below 84 degree F (29 degree C) all afternoon
A summer day with high humidity levels is oppressive either if the temperature stays above 84 degree F (29 degree C) all afternoon or if there is no wind
On Wednesday, a refreshing breeze in the early morning became intermittent by late morning, and the day's humidity levels were constantly high. It was an oppressive day, even though the temperature did not rise above 84 degree F (29 degree C) all day.