Today, AirNow reported moderate and unhealthy levels for
sensitive groups of PM2.5 in different regions such us the Great
Lakes, Northeast and Mid-Atlantic regions as well as in
California (top left). Air quality readings in Utah continue to
show moderate to unhealthy levels during the day. Moreover,
ozone levels in the same stations turned moderate and unhealthy
levels for sensitive groups (top right). Some fires continue
taking place in the US but none of them producing significant
smoke (bottom left). Regarding the fires in Australia, Earth
Observatory published a couple of images captured by the
Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's
Terra satellite showing numerous fires across the continent on
January 6, 2013 (left). Hundreds of uncontrolled fires also
burned throughout New South Wales and Victoria, the two most
populous Australian states. Three of the most intense were the
Deans Gap fire, the Yarrabin fire, and the Cobbler Road fire
(right). Extreme heat and strong winds have f