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Keep the sunscreen close by, because Ottawa just broke a few more heat records for the second day straight.

According to Environment Canada, temperatures in the nation’s capital reached 33.0 C Monday afternoon, breaking the record for the hottest Sept. 25 as recorded at the Ottawa International Airport.

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The all-time high for Ottawa previously belonged to the Central Experimental Farm, when temperatures hit 31.7 C there on Sept. 25, 1891.

Peter Kimbell, a warning preparedness meteorologist with Environment Canada, said the heat wave is being caused by a large ridge of high pressure sitting over much of southern Ontario and the northeastern United States.

The high pressure has pushed a jet stream — which normally sits over top of us at this time of year — further north than usual, taking away more normal fall temperatures and replacing them with oppressive mid-summer-like heat.

Kimbell said people should enjoy the late summer blast while they can. By Thursday, temperatures are set to nosedive and become much more autumn-esque.

Temperatures on Tuesday are expected to be around 31 C, but will fall to 18 C on Thursday and 13 C on Friday.

Sunday was the hottest Sept. 24 on record, reaching 31.4 C at 3 p.m. The old heat record for Sunday’s date was 28.5 C back in 2010, but Ottawa burned through that around lunchtime.

Sunday also marked Ottawa’s 13th day in a row with a temperature of at least 25 C. Monday made that our 14th.

The current dry spell is also the longest since 2009, for any time of year, according to weather historian Rolf Campbell. Ottawa has had no precipitation since Sept. 8 — and even that was a measly 2.2 millimetres.