Air Data

Source: National Institute of Water and Atmospheric Research

Note: PM10 concentrations are given in micrograms per cubic metre of air, or µg/m3.

Source: Regional councils of Waikato, Wellington, Canterbury, Otago; Auckland Council

Note: PM10 concentrations are given in micrograms per cubic metre of air, or µg/m3.

Source: Institute of Geological and Nuclear Sciences. Regional councils of Wellington,
Hawke's Bay; Nelson City Council; Marlborough District Council, Otago; Auckland Council

Rural areas as defined by Statistics New Zealand.

Average is unweighted average across North Island rural areas.

Note: There is no rural monitoring in the South Island. PM10 concentrations are given in micrograms per cubic metre of air,

Source: Regional councils of Bay of Plenty, Waikato; Auckland Council

Between 25,000 and 60,000 people.

Average is population weighted average of monitoring sites in medium-sized towns.

Source: Regional councils of Northland, Bay of Plenty, Hawke's Bay, Manawatu-Wanganui, Wellington, Canterbury, Southland;

Greater than 100,000 people.

Average is population weighted average of monitoring sites in cities.

Note: PM10 concentrations are given in micrograms per cubic metre of air, or µg/m3.

Source: Regional councils of Waikato, Wellington, Canterbury, Otago; Auckland Council

Note: Nitrogen dioxide concentrations are given in micrograms per cubic metre of air, or µg/m3.

Source: Auckland Council, Wellington Regional Council

Source: Ministry of Transport

Source: Regional councils of Northland, Bay of Plenty, Waikato, Hawke's Bay, Manawatu-Wanganui, Wellington, Canterbury, West Coast, Otago, Southland; District councils of Marlborough and Tasman; Nelson City Council; Auckland Council

Note: PM2.5 concentrations are given in micrograms per cubic metre of air, or µg/m3.

Source: Regional councils of Wellington, Canterbury; Auckland Council