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Early morning air pollution in Calexico

(Overnight air pollution)….It happened in Calexico, again.

Air Quality Conditions once again reached Unhealthy levels early Sunday and Monday mornings. In both instances, the levels had stabilized by the time the sun came up. Air Quality conditions were at a Good level throughout the day both Sunday and Monday morning. The Air Quality monitoring Station on Ethel Street in Calexico again registered high levels of PM 2.5. The Finite Particulate Matter, created mostly from vehicle emissions. Increased vehicle traffic in Mexicali, probably farm workers coming across the border, are thought to be the cause of the high overnight levels of PM 2.5.