NEW : Russian President visits the station . Carbon monoxide levels are dangerously high in Moscow . People are encouraged to stay indoors and wear masks . There are no signs of the heat wave abating , and wildfires are still burning in the countryside .
NEW : Russian president visits ambulance station . Carbon monoxide levels are dangerously high in Moscow . People are encouraged to stay indoors and wear masks . There are no signs of the heat wave abating , and wildfires are still raging in the countryside .