It is the fourth daily record broken since an unprecedented heat wave descended on the region early in the week, and it has brought its share of headaches with it, not to mention prodigious ice cream consumption.
With temperatures dramatically exceeding 30 degrees Celsius (86 degrees Fahrenheit) four days running, at least 16 people are now known to have suffered from heat strokes this week, including four children, a spokesman for Moscow's health department said Wednesday.
"On Tuesday, 10 people suffered heat stroke, four of whom were children," Lyubov Zhomova said. "Three adults were hospitalized, the rest declined and were taken home."
On Monday, three people were hospitalized and three sent home, she said.
In addition, some 28 people, many of them apparently drunk, have reportedly drowned while swimming in the city's lakes, reservoirs, canals and rivers, despite a general prohibition against the practice.
On the bright side, energy supplies have not been seriously affected, despite a spike in electricity demand as people turned on their air conditioners, a spokesman for Moscow's electricity service said.
"We have not had to disconnect anyone from the grid because of the heat," Alexander Shapochkin said.
The head of Russia's largest private oil company LUKoil, Vagit Alekperov, said Russian gas producers would cut down production by 8% until the end of September due to the unprecedented hot weather and consequently lower demand.
Surprisingly, there have not been more fires than usual given the dry conditions, according to the city's chief fire inspector.
"This year, we have registered slightly more than 4,500 fires, which is 3.7% less than the same period last year," Sergei Anikeyev said.
He said 173 people died in fires so far in 2007, or 25% fewer than during the same period last year. According to the emergencies service, seven forest fires are currently burning in the Moscow Region.
The heat is expected to continue into Thursday, with a good possibility that yet another record will be set.
