This map seems to indicate some spike recently:
https://thebarentsobserver.com/en/se...-after-missile
While normal background in the town with a population of 190,000 is around 0.11 µSv/h (microsivert per hour), the levels measured at the monitor on the Lomonosov Street near Lake Teatralnoye peaked at 2 µSv/h, nearly 20 times higher gamma radiation than normal. That, though, is still way within permissible levels for population exposure.
This map shows the maximum levels of radiation at the public monitors in Severodvinsk around noon on August 8th. Map by the Arkhangelsk branch of Ministry of Emergency Situations (EMERCOM).
Radiation increase peaked between 11.50 and 12.30 local time and was back at normal levels at all location by 14.00, head of the Civil Protection Department of the administration in Severodvinsk, Valentin Megomedov, told regional news agency in Arkhangelsk
29.ru on Thursday.