Hi eichmat,
There is already a cloudbase gauge.
If you open your gauges.php page with an editor and look for the section that looks like below. Then add the section in green
</div>
<div id="tip_3" class="gauge box_img3">
<canvas id="canvas_rrate" class="gaugeSizeLrg"></canvas>
<h3>Rainfall rate</h3>
</div>
</div>
<div class="row" style="height: 410px;">
<div id="tip_11" class="gauge box_img3">
<canvas id="canvas_cloud" class="gaugeSizeLrg"></canvas>
<h3>Cloudbase</h3>
</div>
</div> <div class="row" style="height: 410px;">
<div class="gauge box_img3">
<h3>Settings</h3><br />
<p><strong> Measurements unit</strong></p><br>
<div class="unitsTable">
<div style="display:table-row; line-height: 30px;">
<div id="temperature" class="cellRight">
<span id="lang_temperature">Temperature</span>:
</div>
<div style="display:table-cell">
<input id="rad_unitsTemp1" type="radio" name="rad_unitsTemp" value="C" checked onclick="gauges.setUnits(this);"><label id="lab_unitsTemp1" for="rad_unitsTemp1">°C</label>
</div>
<div style="display:table-cell">
<input id="rad_unitsTemp2" type="radio" name="rad_unitsTemp" value="F" onclick="gauges.setUnits(this);"><label id="lab_unitsTemp2" for="rad_unitsTemp2">°F</label>
</div>
Here is a link to my gauges page. Cloudbase is down at the bottom.
http://www.midlifedad.me.uk/weather/gauges.phpAndy