Ozone Alert! Days are issued when ozone levels are expected to reach unhealthy levels near the ground. These are days with high temperatures, minimal cloud cover and light winds. So far this season, ...
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.
PROVIDENCE – The state Department of Environmental Management is predicting unhealthy air-qualityconditions Thursday afternoon and evening in Providence, Kent, and Bristol counties due to elevated ...
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