* Code orange air quality alert Wednesday: unhealthy for sensitive groups *
Today’s combination of heat and humidity made it feels as hot as about 100, but – mercifully – fell slightly short of expectations prompting the heat advisory for urban areas to be discontinued (criteria is heat indices of 105+). Wednesday’s more or less a carbon copy of today, but the stagnant air is allowing air pollutants to collect, and a code orange air quality alert has been posted.
Through Tonight: Partly cloudy, warm and muggy. Temperatures fall back slowly through the low 90s and 80s this evening, with overnight lows from the mid-70s in the cooler suburbs to around 80 downtown. Winds are very light from the north.
Tomorrow (Wednesday): Hazy, hot and humid. Like today, highs climb into the mid-90s. When you factor in the humidity, it will feel like 100 at times in the afternoon. Winds from the northwest are light at around 5-10 mph.
Incredible lightning shot from Pittsburgh, via Twitter:
View from USX pic.twitter.com/GyIVqLswBX
— timbetler (@timbetler) July 16, 2013