1The air or atmosphere surrounding the earth; the layer of gases around a planet; used in meteorology and environmental contexts.
大気の温度が上がると天候に影響が出る。
When atmospheric temperatures rise, the weather is affected.
大気汚染の問題は都市部で深刻になっている。
Air pollution has become a serious problem in urban areas.
研究室で大気中の二酸化炭素濃度を測定した。
We measured the carbon dioxide concentration in the atmosphere in the lab.
2Magnanimity; generosity of spirit — being broad-minded and forgiving. A somewhat literary sense, rarely used in modern Japanese.
彼は大気の持ち主で、小さなことにこだわらない。
He is a man of great magnanimity and doesn't fuss over small things.
失敗を責めず、大気をもって部下に接した。
Without blaming them for their mistakes, he treated his subordinates with magnanimity.