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Updated over 6 years ago
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Maryland Ozone Exceedance Days in 2007

Maryland 8-Hour Ozone Concentrations Exceeding 2008 Health-Based Standard in ppb, Finalized Data. In 2008 EPA set the ozone standard to 75 ppb. High levels of ozone can cause health effects including increased asthma attacks and other respiratory effects. You can get more information about the health effects at This data set details which monitoring locations in Maryland exceeded the standard during the year and the maximum concentrations on the dates the standard was exceeded. More information on Maryland's air quality monitoring is available at

Querying over HTTP

Splitgraph serves as an HTTP API that lets you run SQL queries directly on this data to power Web applications. For example:

curl \
    -H "Content-Type: application/json" \
{"sql": "
    SELECT *
    FROM \"opendata-maryland-gov/maryland-ozone-exceedance-days-in-2007-iyzm-8pqb\".\"maryland_ozone_exceedance_days_in_2007\"
    LIMIT 100 

See the Splitgraph documentation for more information.

  • maryland_ozone_exceedance_days_in_2007
Upstream Metadata