Smoke could be observed over the Great Lakes states today in the RGB images from MODIS Terra (top, left). According to the Hazard Mapping System (HMS) analysis, the source continues to be Texas. MODIS Terra shows elevated AOD (top, right)…

Here is the original:
Smoke over the Great Lakes; Ozone levels improve except in the Great Lakes and Mid-Atlantic

Smoke from BC fires was observed to be sneaking into the Great Lakes region through Minnesota today (left). MODIS Terra shows the elevated AOD in this region and also in Western Quebec (right; images are overlaid with current AQI). We…

Read the original:
Unhealthy levels of PM2.5 persists in Alberta

A combination of elevated PM2.5, ozone, and AOD levels resulted in bad air quality for much of the Mid-Atlantic today. PM2.5 levels (top left, courtesy AIRNow) throughout the region were mostly Code Yellow (moderate), with Code Orange (Unhealthy for Sensitive…

See the original post:
Bad Air Quality in Mid-Atlantic

A large area of Western and Central Canada was covered by smoke once again, resulting in high AOD values (top, left) and moderate to unhealthy (for sensitive groups) AQI in the region between Toronto and Seattle (top, right). Moderate AQI…

Originally posted here:
Unhealthy ozone levels remains in California and so does smoke over Canada

Remnant smoke from Canadian fires is still present over the Northeast region of the US resulting in high AOD over the Atlantic as observed by MODIS Aqua (top left). Ozone levels (bottom, left) in the region that connects Rhode Island…

Here is the original:
Good to Moderate AQI in the Great Lakes, Mid-Atlantic, Northeast, Plain States and Southern California