Our air quality has been bad this week. A high pressure system has created a temperature inversion and is holding in all the smoke and haze over the western Treasure Valley in Idaho.
The concentration of PM 1.0 is acceptable, but 2.5 and 10.0 is in the yellow and red categories. I hope a cold front will come through before long and scour out the valley. Meanwhile, sunsets will continue to be hazy orange.