The latest (draft) air quality figures for Portsmouth have just been published. I’ve updated my CAPIT map tool with the new figures.
My first impression is that sites with long term readings are about the same as 2017, for example London Road remains about the same. Known problem areas of Queens Road, St Michael’s gyratory and the bottom of M275 are back out of compliance. However, the expanding monitoring introduced recently have picked up several new locations that are out of compliance (above 40ug/m3). This includes Albert Road, Market Way (behind Cascades) and Fratton Bridge. The busy road by the Catholic Cathedral has a very high NO2 level of 50ug/m3. Areas barely within compliance including the top of Milton Market, the junction at the bottom of Velder Avenue, Cosham (Northern Road & Tudor Crescent) and Port Solent.