Throughout the summer, the Rhode Island Department of Environmental Management (DEM) may issue Air Quality Alerts when a ...

TOLEDO, Ohio — The Toledo Metropolitan Area Council of Governments (TMACOG), as well as the city of Toledo, is warning the public of health risks that come with increased ground-level ozone in the ...

Ozone as a layer several kilometers up in the atmosphere protects living beings, including humans, from ultraviolet rays. But its accumulation at ground level can be very dangerous, Mongabay ...

SAN FRANCISCO — While scientists know that high concentrations of ozone near the ground can cause significant harm to important crops, that harm has been difficult to measure on a regional, national ...

The alert is for ground-level ozone, a type of air pollution that most often occurs on hot, sunny days.

AUGUSTA - Ground-level ozone concentrations are expected to reach the ‘Unhealthy for Sensitive Groups (USG) level for Tuesday ...

Ground level ozone (O3) also tropospheric ozone, is a trace gas of the troposphere, with an average concentration of 20–30 parts per billion by volume (ppbv), with close to 100 ppbv in polluted areas.