Air quality updates during Covid19 level restrictions

Changes in New Zealand air quality due to COVID-19 level restrictions.

Issues

Changes in NZ air quality during COVID-19 level 3 restrictions.

Air quality update for Friday 15th May 2020. End of level 3 restrictions.

Changes in NZ air quality due to COVID-19 level 4 lockdown. Air quality update 7 for Tuesday 28 April 2020. End of level 4 restrictions.
Changes in NZ air quality due to COVID-19 level 4 lockdown Update 6 – fourth full week of level 4 restrictions for Thursday 23rd April 2020
In week 3 levels of oxides of nitrogen (or NOx, representing mainly vehicle exhaust pollutants) in our major cities fell even further, with reductions of 83 – 91 % relative to normal at most sites.
The large reductions in traffic pollution in our major cities seen during week 1 of lockdown have been maintained during week 2.