Österväg in Visby and Hamngatan in Linköping do not meet the stricter environmental quality target of 15 micrograms of particles per cubic meter.

On Österväg the annual average lands at 20 and on Hamngatan in Linköping the average is 17. Kungsgatan in Norrköping manages exactly at the target value, 15.

When it comes to levels of nitrogen dioxide, only four streets do not meet the target - all in the Stockholm area.

Photo: Eastern Sweden Air Safety Association

According to Linköping Municipality, the limit value for the number of particles has not been exceeded on Hamngatan since 2011. One possible explanation is that the spring and winter have been unusually dry this year, which has resulted in more dust particles than usual.

- We have long measured the air quality on Hamngatan, the last time the limit value was exceeded was in 2011. It is the Eastern Swedish Air Protection Association that monitors the air quality, according to their analysis, the reason for the high levels of particles this year is the dry weather that led to very dry roads. road dust.

Many motorists also have studded tires that wear on the snow- and ice-free asphalt, says Muharrem Demirok (C), chairman of the public works committee.