The EU radiation map site doesn't provide a link, but you can open the station with ID UA33429, which corresponds to Khmelnytskyi and see that the background radiation went from approx 100 nSv/h to 155 nSv/h. I can only look back to 10th of April and don't see a peak higher than approx 110 nSv/h, with the average hovering around 100.