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Space-Based Measurements of Ozone and Air Quality in the Ultraviolet and Visible

What was the total column ozone amount over your home?

You can find the total column ozone amount* over your house (or anywhere else you want) for most dates between November 1978 and December 1994 and from August 1996 to today. Just enter the latitude and longitude you want the ozone for and an instrument that was measuring ozone at that time.

Enter Instrument Name:


Select a point on the map or enter your Latitude and Longitude (in degrees), pick a date to view and press 'submit':

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Latitude: Longitude:
Year: Month: Day:


*This value is the total column ozone amount, NOT the amount of ozone that causes smog (and that you hear about from your local weatherman). The TOMS and OMI measurements are not sensitive enough to measure changes in the amount of ozone so close to the ground.

**Due to the extreme viewing conditions encountered when the orbit of Meteor-3 drifts near the terminator, only level 3 data taken when the sunlit portion of the orbit is between 9 AM and 3 PM for the first data year and between 8 AM and 4 PM for the remaining two data years are available for access here. Therefore, you can not obtain ozone values for all of the days between May, 1993 and December, 1994. The stricter time constraint for the first data year is due to problems associated with the eruption of Mt. Pinatubo.

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