Differences between API's data and webpage infos

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  • Updated 4 years ago
When I ask the API for the weather history in London on dec 31th 2012, I have a history>dailysummary>precipm="0.0".

See http://api.wunderground.com/api/YOURK...

But when I go the the corresponding webpage I have a 5mm precipitation : http://www.wunderground.com/history/a...
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Vince57

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Posted 5 years ago

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WunderWilliam

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Thank you for bringing this to our attention. I don't have an immediate answer, but we will look into what might be causing such a discrepancy.
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kylekai

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I'm noticing the same thing. The API data's forecast said this:
Mostly cloudy. Fog early. High of 57F. Winds from the West at 5 to 10 mph.
And the web page the data referenced said this:
A mix of clouds and sun. High 63F. Winds W at 5 to 10 mph.

That's a 6 degree difference, not a lot, but enough where my customers will point it out to me.
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Brendan Hayes, Official Rep

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Where did you see the 6 degree difference? What city were you looking at?
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kylekai

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Near Lake Elsinore, CA.
Used the lat/lon 33.700966,-117.335655, as in

http://www.wunderground.com/cgi-bin/f...
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Brendan Hayes, Official Rep

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We are testing a new forecast system, and currently the new forecasts are on wunderground.com and in California. We will continue to roll out the new forecast across the US then world on wunderground.com to work through any quality issues. Once the new forecasts are given the stamp of approval, they will roll into the API as well. We should finish rolling out the US over the next 2 weeks. The change will be seamless in the API, and then the API and wunderground.com will match again.

As for the London discrepancy that is the original point of this thread, we are still nailing down why some things are different in the API. We have found a couple of more instances of this happening, which will lead us to finding a solution.
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kylekai

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Great! Thank you for such a fast reply.
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djwocky

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Note I am in California and see the same issue

For a specific zipcode, 92064, the forecast high/low do not match that in the html UI.

http://www.wunderground.com/cgi-bin/f... shows one set of values but

http://api.wunderground.com/api//fore...

shows a different set of values that are consitently higher. Whats interesting is other zipcodes seem to work perfectly.