The Aberystwyth depot for Arriva Buses Wales will close today, alongside those in New Quay, Lampeter and Dolgellau.
The company says the period of instability regarding public transport funding - together with spiralling fuel costs, has put unsustainable financial pressure on their Aberystwyth operations.
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It will remain breezy with further blustery and at times thundery showers.
Here's our gallery of some of your St David's Day pictures.
Showers becoming increasingly wintry even to lower levels, bringing an ice risk.