Mark down this Treasure Valley Fourth of July as red, white and blue — and yellow.
Red for the heat: The temperature climbed to 100 degrees late Tuesday afternoon, the Valley’s first day in 2017 with triple-digit temperatures:
White for the thin, wispy clouds in the hot holiday sky, and blue for the color that sky will stay, since there is no rain in the rest of the week’s forecast.
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Yellow for air quality. Yellow means moderate in the index maintained by the Idaho Department of Environmental Quality. It’s the range between “good” and “unhealthy for sensitive groups.”
The air-quality index number was forecast to be 75 both Tuesday and Wednesday throughout the Treasure Valley. That was high enough to trigger a ban on open outdoor burning and indoor woodstove or fireplace use in Ada and Canyon counties each day.
Fireworks were a big factor in Tuesday’s index number, while ozone — a common summer problem — was the main factor in Wednesday’s.
Don’t light any fires, and limit driving if you can.