Same old weather story again today. It's summertime and you've got to go up to the Arctic to even see mildly cold air. Without any big temperature differences the atmosphere slows way down. Consequently, it'll be warm and humid again today, enough so to trigger an air quality alert for this afternoon. Whether the high stays in the mid 80s or reaches 90 depends on how soon the clouds arrive this afternoon.
Once the clouds arrive later today there will be a decent chance of showers and thunderstorms. The chance of rain will gradually fade through the day tomorrow. Humidity relief arrives on Friday, which should be mostly sunny and warm and a little breezy. The weekend is also shaping up to be sunny, warm and dry, expect highs in the upper 80s to near 90. Temperatures look to remain in that range well into next week, though the humidity is likely to return by Monday.