Proposed forecast schema.

forecasts.xml

<?xml version="1.0" encoding="UTF-8"?>
<data>
  <time>9:12 AM</time>
  <forecaster>M. Graves</forecaster>
  <discussion>This week will be winter-like in Yuma as cold air remains settled over the region; High temperatures will stay in the low-mid 60s. Normal for this time of year is 75 degrees F. The main day of interest this week is Friday, on which breezy winds out of the northwest are forecast. Blowing dust may be possible on Friday and therefore the PM-10 (dust) forecast has been bumped up into the Moderate Air Quality (AQI) category to reflect this. PM-10 may increase again on Sunday with breezy northerly winds as well. Ozone is forecast to stay in the Good AQI category through this forecast period. We'll keep an eye out for any changes in the wind forecast later this week.<br/><br/>Check back tomorrow for the next Yuma air quality forecast.</discussion>
  <forecasts>
    <forecast>
      <date>2/21/2018</date>
      <day>WED</day>
      <aqivalue>46</aqivalue>
      <type>OZONE</type>
      <alert>NONE</alert>
      <ozoneconcday1>50</ozoneconcday1>
      <pm10concday>24</pm10concday>
      <ozoneaqiday>46</ozoneaqiday>
      <pm10aqiday>22</pm10aqiday>
      <notice>9999</notice>
      <healthstatement>No health impacts are expected.</healthstatement>
      <ozonehourly>35,32,29,30,31,33,35,36,42,44,47,51,52,53,52,51,49,47,44,39,36,34,33,34</ozonehourly>
      <ozoneaverage>null,null,null,null,null,null,null,null,null,null,50,50,50,50,50,50,50,50,null,null,null,null,null,null</ozoneaverage>
      <pm10hourly>14,18,12,16,19,56,51,46,34,29,23,18,14,15,15,15,15,18,20,23,25,30,30,30</pm10hourly>
      <pm10average>24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24</pm10average>
    </forecast>
    <forecast>
      <date>2/22/2018</date>
      <day>THU</day>
      <!-- etc. -->
    </forecast>
    <!-- etc. -->
  </forecasts>
</data>