The Health Minister, Mark Drakeford AM, says despite an increase in the numbers of people who don't smoke in cars when children are present there is still a stubborn percentage of people who still do. He says he wants to close that gap and introducing the law will make the final difference.
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South and east Wales will stay dry tonight, there will be clear spells and very little wind but mist developing in the valleys.
Black History Month celebrations are continuing with a showcase of youth talent at the Wales Millennium Centre.
Bright and sunny spells throughout the day. Highs of 16°C.