In contrast to the unhealthy air quality posted yesterday and besides the fires in the west, today good air quality was reported throughout the country. According to Air Now, Ozone levels were good in the entire nation. On the other hand, some moderate PM2.5 levels were reached in different regions such as, the Great Lakes, Mississippi Valley and Pacific Southwest (top left). Fires in northern California, Idaho, Montana and Wyoming once again continue producing large amounts of dense smoke (top right). The smoke from these fires has been moving easterly extending from the California and Oregon coastline, through Idaho, Montana, Wyoming, South Dakota, Nebraska, Kansas, Iowa, Missouri and into Illinois and later reaching the east coast (middle left). Monterrey Aerosol Modeling forecasted the smoke plume over the states previously mentioned as well as Sulfate over the Mid-Atlantic and Great Lakes region (bottom right).