Air quality was mostly Code Green (Good) today, with some scattered areas of Code Yellow (Moderate) conditions in the Midwest and southern California, as seen in the loops of AQI values for PM2.5 and ozone (below). The big weather-makers in…

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Moderate Air Quality in California and the Midwest; Smoke in Mexico

California as a whole had improved air quality (PM 2.5 and Ozone) compared yesterday’s reported levels. As seen on AirNow’s hourly PM 2.5 AQI and Ozone, there were scattered areas of Code Orange, but most of the area was Code…

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Conditions in CA have improved