Despite all these advances, the brown cloud still hangs over the city on windless days.

Christie started out with a relatively easy one, a 31-yarder in the first quarter on a nearly windless day.

The atmosphere is particularly bad when traffic builds up on hot, windless days.

Besides, we had other problems, starting with the hot Maine sun and the windless day.

Choose a dry, windless day when the temperature will remain around 40 degrees for the next 24 hours.

It had been a hot, windless day, and now they were facing the same kind of night.

When fully charged, the battery can continue to provide power for 15 windless days.

The elves weren't the only ones who would take advantage of clear, windless days.

The sun was rising for yet another hot, windless day.

It was very quiet in the forest; a hot, windless day.