Australia’s raging bushfires earlier this month saw an “unprecedented” spike in carbon monoxide levels monitored in New Zealand, NIWA says.
New Zealand usually has some of the highest quality air in the world. However, in early December, it showed a jump to 150 parts per billion (ppb). But this month, it shot up even higher to 500ppb. Health issues from carbon monoxide can occur between 10 to 30 parts per million,
