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Border air pollution

(The first Air Quality Alert was sent out at mid-night)…The Air Pollution Control District says the Air Quality Index for PM 2.5 had reached 146. 

That translates into an Air Quality condition of Unhealthy for Sensitive Groups. By 9:00 am the levels had increased to 152, for a condition of Unhealthy for everyone.. PM 2.5 is a finite Particulate Matter created mainly from vehicle emissions. Sensitive Groups are the elderly and small children, as well as those with heart or respiratory disease. The Environmental Protection Agency recommends those groups avoid physical exertion, and remain in-doors until the levels of Particulate Matter reach a lower level.