"The number of days of 'bad' for ultra fine dust this winter is likely to be higher than last year."

There is a high probability that the number of days of ultrafine dust "bad" this winter will increase compared to last year.

The National Institute of Environmental Research, affiliated with the Ministry of Environment, announced that it will provide seasonal forecasts for ultrafine dust concentration in winter and spring in advance every three months from today.

From December this year to February next year, the average concentration of ultrafine dust was 50% more likely to be higher than a year ago, 30% more likely to be similar, and 20% less likely to be higher than the previous year.

In addition, the number of days above "bad" was 40% more likely than the previous year, 40% more likely to be similar, and 20% less likely to be similar to the average year over the past nine years, and 40% and 20% more likely to be similar to the average year.

The National Institute of Environmental Research plans to provide the national average concentration compared to the average year and the previous year, the probability of occurrence for each third quartile for the number of bad or worse days, and the seasonal forecast.