こう化学 かがくスモッグ注意 ちゅうい ほうでしょう
kōkagakusumogguchūihōdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 光化学スモッグ注意報

1. Probably a photochemical smog warning.

Polite
Presumptive
Conjecture