The hottest July 4th was 105F at Woodstock, Virginia in 1898. Half of the 100 degree days were more than a century ago, and all but one occurred with CO2 below 350 ppm.

Four 100+ degree readings were reported on July 4, 1898  – at Woodstock, Fredericksburg, Farmville and Staunton

People who are trying to blame the heat in DC on CO2 are either incompetent or liars.