If you live in the city, your air conditioner could sure use a break.

D.C. has gone an entire month (31 days) without the mercury falling below 70 degrees. This is historic territory.

Assuming the temperature doesn’t fall below 70 through Saturday (which is very unlikely), 2016 will set a new record for the longest period at or above 70 degrees. Records in D.C. date to 1872.

Since the coolest July 4 in 75 years, our nights have simply not cooled off much. The low temperature on 25 of 31 nights has been above the average of 71 degrees, and we’ve set three records for warmest low temperature.

You may recall that, embedded within this period of unusually warm temperatures, we also had a five-day streak of temperatures of at least 80 degrees from July 23 to 28 — the second-longest on record (falling short of the record in 2013 by a mere four hours).

After a front crosses the region Saturday, modestly cooler air will stream into the region Sunday into early next week. But the GFS model forecasts low temperatures to remain above the 70-degree threshold. Then temperatures start to ramp back up again, so we may not just break this 70-degree record, but shatter it.

The abundance of warm nights this year and in many recent years is a strong indicator of climate warming in the region — driven likely by urbanization and rising greenhouse gas concentrations.