Air Quality Alert issued July 17 at 12:43AM EDT by NWS Wilmington OH (details ...)
The Ohio Environmental Protection Agency has issued a statewide Air Quality Advisory for the entire state of Ohio as smoke from Canadian wildfires continues to adversely impact air quality.
Pollutants across the state are expected to range from the 'Unhealthy For Sensitive Groups' category in the southwest part of the state to the 'Unhealthy' category in the rest of the state. Hourly concentrations at times may reach the 'Very Unhealthy' to 'Hazardous' categories.
It is recommended, when possible, to avoid strenuous outdoor activities, especially those with heart disease and respiratory conditions like asthma. Watch for symptoms including wheezing, coughing, chest tightness, dizziness, or burning in the nose, throat, and eyes.
For additional information, please visit the Ohio Environmental Protection Agency's website at epa.ohio.gov.
72° 72° chance Sat 88° Sat 88° chance 66° 66° Sun 80° Sun 80°
Tuesday, June 15th, 2010
Photo by Janie Southard/The Daily Standard

A scum of algae coats the lake water at the St. Marys Boat Club on the northeast side of the lake. The thick, iridescent mass stuck to boats and had an odor to it, passers-by said.

Related online story:
GRAND LAKE - It's back.
Algae.
Motorists drove slowly along West Bank Road on Monday to look at the thick green coating on the lake's water and shoreline. [More]
Additional pictures on this date