“Mae llawer o'r gwaith hwnnw eisoes ar y gweill – er gwaethaf y pandemig diweddar, rydym wedi gallu cefnogi awdurdodau lleol i ddechrau gweithio ar gynlluniau i wella ansawdd aer ledled Cymru, gyda'r newidiadau i Heol y Castell yn un enghraifft.
“Much of that work is already underway – despite the recent pandemic, we have been able to support local authorities in commencing work on schemes to improve air quality across Wales, with the changes to Castle Street being one example.