According to AirNow, moderate air quality conditions were reached in the Southeast and Mississippi Valley during the day (top left). Moderate and some unhealthy levels for sensitive groups were also reached in the Pacific Northwest. In terms of fire and smoke, HMS has indicated that an area of light density smoke was seen across portions of eastern Texas/eastern Oklahoma and lower and middle Mississippi Valley. The smoke is believed to have primarily originated from numerous agricultural fires seen burning across the lower Mississippi Valley yesterday. Moreover, a thin area of light density smoke is seen stretching from Lake Michigan westward across northern Illinois, southern Wisconsin, Iowa to northeast
Nebraska (top right). Retrievals from MODIS shows high aerosols optical depth (AOD) in the areas previously mentioned due to smoke (middle). Finally, Monterrey Aerosol Modeling indicates the presence of Sulfate from eastern Canada across the US eastern coast up to the Southern Plain states (bottom).