Current Sulfur Dioxide 1-Hour Levels

The map below shows the current highest sulfur dioxide 1-hour levels measured in parts per billion (ppb) for each of the metropolitan or other areas across Virginia where sulfur dioxide is measured by the Virginia DEQ. More detailed maps showing the current 1-hour sulfur dioxide levels measured at each site in a particular area are available by clicking on the colored boxes below. These levels are based on data measured at the continuous air monitoring stations and may include data from local governments and private monitoring networks.

The latest image available is for Friday May 24, 2013 15-16:00 EDT. If the image below is older than this, you will need to force your browser to reload this page by clicking on the browser "Reload" or "Refresh" button.

The Virginia DEQ has not verified this data and it may change. This is the most current data, but it is not official until it has been certified by our technical staff.

Key to Sulfur Dioxide Highlight Colors:

Sulfur Dioxide levels have been mapped to colors based on the national one-hour standard levels.
The table below shows the levels, color-coding, and suggested actions for the one-hour standard.

	There is no current measurement for this area or site.
	Sulfur Dioxide levels in this range are projected to be healthy based on the national one-hour standard for Sulfur Dioxide. No health impacts are expected when levels are within this range. No special actions are required when levels are within this range.

PLEASE NOTE: This data has not been verified by the Virginia DEQ and may change. This is the most current data, but it is not official until it has been certified by our technical staff. Data is collected from Virginia DEQ ambient monitoring sites and may include data collected by other outside agencies. This data is updated hourly. All times shown are in local standard time unless otherwise indicated.