be on air
US /bi ɑn eər/
UK /bi ɑn eər/

1.
estar no ar, ser transmitido
to be broadcast on radio or television
:
•
The show will be on air live at 8 PM.
O programa estará no ar ao vivo às 20h.
•
The news report is about to be on air.
O noticiário está prestes a entrar no ar.