PM Update: Wednesday likely to be hottest day since mid-July

Temperature Map

Temperatures: Latest D.C. area temperature map. See interactive map on our Weather Wall.

Today we logged our 31st 90+ degree day, closing in on the yearly average of 36. We’ll certainly tack on another tomorrow, as highs climb into the mid-90s. If we reach 94, it will equal the hottest day since July 19. And if we somehow climb to 97, it will match the year’s hottest day, which was July 17.

Through Tonight: Very much a July-like night. Temperatures only slowly drop back through the 80s, with lows in the mid-70s downtown to around 70 in the cooler suburbs. Winds are light from the south, with partly cloudy skies.

Tomorrow (Wednesday): Mostly sunny, hot, and humid! Highs reach the low-to-mid 90s but it feels like 100 or so factoring in the high humidity levels. There’s little breeze to quell the heat. The southerly wind is just 5-10 mph.

See Matt Rogers’ forecast through the weekend. And if you haven’t already, join us on Facebook and follow us on Twitter . For related traffic news, check out Dr. Gridlock.

The Reflecting Pool on September 8. (Christopher Skillman via Flickr)

The Reflecting Pool on September 8. (Christopher Skillman via Flickr)

Pollen: Trees counts are LOW, grasses are LOW-MODERATE, mold spores are LOW-MODERATE and weeds are MODERATE-HIGH.

“Ragweed pollen counts were much below average the 3rd and 4th weeks of August,” writes Susan Kosisky of the U.S. Centralized Allergen Extract Lab. “For the 1st week in September 2013, ragweed pollen rebounded to a daily average of 26 grains/cubic meter of air. Daily average counts (1st week in September) for ragweed (1998-2013) are indeed just around this amount at 25.83 grains/cubic meter. So our “peak week” is just where it should be.”

Also on Capital Weather Gang

Weather whiplash: 90s Wednesday, possible 40s Saturday morning in Washington, D.C.