Author Topic: DarkSky current conditions accuracy  (Read 125 times)

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Offline daneast

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DarkSky current conditions accuracy
« on: February 02, 2019, 08:09:58 AM »
Hey wx folks. I've switched over to DarkSky in place of WU for a lot of my data (but I'm hoping to eventually transition to NWS once they finish their APIs that have been in beta for years).  Today I noticed quite a large deviance in current conditions for a given location.  I checked DarkSky against as many other sources as I could find for the current conditions for my town, and DarkSky indicated 5 degrees warmer than most (DarkSky reports 32F, where other sources are reporting 27F).  In another location in the region DarkSky is reporting 5 degrees colder (30F vs 35F).

I assume this might be due to the way they interpolate conditions between stations and what stations they are using.

I'm curious if those of you using DarkSky have made any observations about its accuracy.  Thanks!

Offline saratogaWX

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Re: DarkSky current conditions accuracy
« Reply #1 on: February 02, 2019, 12:09:03 PM »
They don't describe exactly how they pick a station close to the lat/long of the forecast to display .. it may be as simple as the nearest one which could be a METAR or MADIS ingress station.  They do show the distance from the forecast point to the conditions point.

For my particular forecast point in Saratoga, the conditions appear to be from my station likely via CWOP->MADIS as the point is 0km away.
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Offline ConligWX

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Re: DarkSky current conditions accuracy
« Reply #2 on: February 02, 2019, 12:33:14 PM »
DS has been pretty good so far with reports and forecasts here. The have not noticed a big difference in unit values at all.

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