atmospheric condition, weather, weather condition - the meteorological conditions: temperature and wind and clouds and precipitation; "they were hoping for good weather"; "every day we have weather conditions and yesterday was no exception"

air mass - a large body of air with uniform characteristics horizontally

anticyclone - (meteorology) winds spiraling outward from a high-pressure center; circling clockwise in the northern hemisphere and counter-clockwise in the southern

cyclone - (meteorology) rapid inward circulation of air masses about a low-pressure center; circling counterclockwise in the northern hemisphere and clockwise in the southern

fogginess, murk, murkiness, fog - an atmosphere in which visibility is reduced because of a cloud of some substance