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Exceedances of the 2008 Ozone Standard (0.075 ppm) for the 2012 Ozone Season
The map below shows ozone exceedances recorded by air quality monitors operating in the Mid-Atlantic region through 9/11/12.
No. of exceedances: 650 Show map legend
Note: Data is preliminary until final quality assurance, and the locations of the monitors are only approximations. The monitor information is not regularly updated, so it is subject to change (for example pollutants monitored, location, or operational status of the monitor may change). Source of data: EPA AIRNow
monitor with 1 recorded exceedance
monitor with 2 - 4 recorded exceedances
monitor with 5 - 9 recorded exceedances
monitor with 10 or more recorded exceedances