DEVELOPING: Arlington air quality now at ‘hazardous’ level

The Washington Monument in the haze, as seen from a Pentagon City apartment building Thursday morning (via WeatherBug)
The air quality in Arlington has reached the worst level on the scale — “hazardous.”
As of 9 a.m. the federal government website AirNow says Arlington’s AQI, or air quality index, is 313. That puts the county in “Code Maroon” territory, two levels above the more commonly known Code Red.
“Everyone should stay indoors and reduce activity l