News
New WHO AQ Guidelines published
22/09/2021
New WHO AQ Guidelines published.
New WHO Air Quality Guideline levels (and interim targets, see link for details):
- PM2.5 reduced from 10 to 5 µg/m3
- PM10 reduced from 20 to 15 µg/m3
- NO2 reduced from 40 to 10 µg/m3