Historical data for multiple days in one request ? | The WeatherAPI Community Customer Community

Is there a way to get historical data for multiple days in one request ?

There is hourly10day which returns an hourly forecast for the next 10 days.

Is there something similar for historical data ?

For history history_YYYYMMDD returns a summary of the observed weather for the specified date but is it possible to get history data from one date to another date.

santoshb

23 Posts
0 Reply Likes

Posted 8 years ago

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8 years ago

runamokisay

4 Posts
1 Reply Like

I am interested in this too! How about, say, the weather on July 6 from 1975-2012?

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1 person likes this

8 years ago

MightyMint

2 Posts
1 Reply Like

I notice this has been on for three months. I could really use this feature. Did anyone get an answer / solution?

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1 person likes this

8 years ago

runamokisay

4 Posts
1 Reply Like

I got an answer after posting a separate question. Basically, they refuse to support this feature.

Comment

8 years ago

runamokisay

4 Posts
1 Reply Like

I got an answer after posting a separate question. Basically, they refuse to support this feature.

Comment

8 years ago

MightyMint

2 Posts
1 Reply Like

Protecting the income stream I guess! The historical data cost is expensive compared to the "live" data.

Comment

7 years ago

joshlehman

2 Posts
2 Reply Likes

This is a real shame since it is highly inefficient (even for a paying customer) to make 365 separate API calls to get just a single year's worth of historical weather data for one location.

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2 people like this

7 years ago

altaibayar tseveenbayar

1 Post
3 Reply Likes

joshlehman: you should store all results in database, so 365 requests will be done just once.

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3 people like this

2018-03-24T12:25:13+00:00

Stefano Campagnolo

1 Post
0 Reply Likes

can you better explain please?

7 years ago

Wolf_Bomber

1 Post
0 Reply Likes

I would love to know the API which can do the job for a Weather Info on the present week. How can i get it done with a single API? I need it asap. :(

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7 years ago

TireSafety

2 Posts
0 Reply Likes

It appears that this feature can be accomplished in some manner with the Planner feature: See http://www.wunderground.com/weather/a...

It is unclear though whether you can use it for more than the previous year.

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7 years ago

tvor51

2 Posts
2 Reply Likes

I wrote this in Python 2.7 to generate a barometric pressure graph.
from json import loads
from urllib2 import urlopen
from datetime import datetime, timedelta

def download_json(url):
weather = urlopen(url)
string = weather.read()
weather.close()
return loads(string)

d,x,y=[],[],[]
x1 = 0.0
key = 'Your key here'
for day in range(4,-1,-1):
url = ''.join(['http://api.wunderground.com/api/', key,
'/history_',
(now-timedelta(days=day)).strftime('%Y%m%d'),
'/q/TX/Addison.json'])
data = download_json(url)
for k in data['history']['observations']:
y0 = float(k['pressurem'])
if y0 < 0.0:
continue
else:
x.append(x1 + float(k['date']['hour'])+
round((float(k['date']['min'])/60.0),2))
y.append(y0)
x1 += 24.0

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2 people like this

7 years ago

Sri Krishna

2 Posts
0 Reply Likes

@ tvor51,
Thanks for the response in Python, i need some time to decode the snake! But the basic principle you used here for the generation of the Web-URL to request the WunderGround Services rely on Python code? Then please provide me the same in URL format using dummy App Key. I need it asap, i would be grateful. and if possible guide me to some information links to master the beast (Weather Service) using the Python Scripts.

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7 years ago

tvor51

2 Posts
2 Reply Likes

@Sri Krishna, not sure what it is that you need. The function download_json takes the URL stored in variable url, where variable key is your App Key. ''.join() is a Python function that joins a list of strings into a single string.
I added this to a program I found and modified that created a weather display for the Amazon Kindle. http://blog.volcanis.me/hack/2012/12/...

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7 years ago

fearless_fool

13 Posts
7 Reply Likes

For PWS stations, you can do things like:

http://www.wunderground.com/weatherst...

to get the raw CSV data. For airports, the format is a little different:

http://www.wunderground.com/history/a...

Is that what you were looking for?

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6 people like this

2013-04-05T12:56:35+00:00

psantos

8 Posts
2 Reply Likes

Just wondering, does a similar call exists for historical hourly data for a given day? (PWS or Airport in csv format)

2013-05-08T07:52:15+00:00

KBSTamm

2 Posts
0 Reply Likes

is there also a way to get the data in a xml-file?

2013-05-08T12:09:03+00:00

fearless_fool

13 Posts
7 Reply Likes

Gosh, why would anyone want xml? :) The CSV format is very fast and compact -- it should be easy for your code to "wrap" it in XML if that's what you really want.

2013-05-10T05:48:08+00:00

KBSTamm

2 Posts
0 Reply Likes

my only problem is that the program im using can't read the csv format and please csv is old

2013-05-10T12:34:46+00:00

fearless_fool

13 Posts
7 Reply Likes

@psantos: yes, you can get fast, efficient 5 minute data for a day at a time with the CSV interface.

@KBSTamm: what programming language are you using? A CSV to XML wrapper only takes a few lines of code.

2013-05-10T12:59:17+00:00

psantos

8 Posts
2 Reply Likes

Hi there! Thanks for the response! Could you provide an example? Thanks!

2013-05-10T12:59:17+00:00

psantos

8 Posts
2 Reply Likes

Hi there! Thanks for your response. Could you provide a quick example? Thanks.

2013-05-10T13:04:52+00:00

fearless_fool

13 Posts
7 Reply Likes

Sure:

=== For 5-minute data, one day at a time:

For PWS stations:

http://www.wunderground.com/weatherst...

For Airport stations:

http://www.wunderground.com/history/a...

=== For Daily data, a month at a time:

For PWS stations:

http://www.wunderground.com/weatherst...

For Airport stations:

http://www.wunderground.com/history/a...

2013-07-03T12:47:21+00:00

cck5064

1 Post
0 Reply Likes

Is there a way to get hourly data for a year?

2013-07-03T16:41:15+00:00

WunderWilliam

7 Posts
1 Reply Like

We don't have a built-in function to get data for more than one day -- each history call is for one day.

Many of our API users create a script to automatically increment the date, and repeat the call. This is the easiest way to get a large date spread.

-William
Wunderground Support

2014-04-30T23:35:49+00:00

teppattra

4 Posts
0 Reply Likes

fearless_fool what program language do you use for saving data to csv file? I try C# what I get just the first line of data. One more question, what format=1 means?

2014-05-01T01:28:07+00:00

fearless_fool

13 Posts
7 Reply Likes

Well, your choice of language isn't so much an issue as your choice of library function in your language. I've used both Ruby and Python for reading and manipulating CSV files, but I'm absolutely certain that C# has libraries to work with CSV files (but I'm not much help on the particulars).

And in this context, format=1 means CSV format.

2014-05-01T06:37:01+00:00

teppattra

4 Posts
0 Reply Likes

Thanks for quick reply, fearless_fool :-)

2017-09-07T15:33:29+00:00

Mayan Whitewater

1 Post
0 Reply Likes

Hi, is there documentation for the WXDailyHistory (or other) function (the various formats for example)? And is it true, access to PWS data is unlimited? you don't need an api id/account?

7 years ago

ghedger

5 Posts
1 Reply Like

"I got an answer after posting a separate question. Basically, they refuse to support this feature."

Then Weather Underground is completely worthless to us and I'm sorry that I signed up.

We'll find what we need elsewhere.

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7 years ago

fearless_fool

13 Posts
7 Reply Likes

@ghedger: Before you write off Weather Underground, did you try the URLs I gave in my answer? I've been using this technique and it works well.

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7 years ago

ghedger

5 Posts
1 Reply Like

I'll give it a chance.

Thing is, it needs to be a quick response suitable for realtime user queries.

It's either quick, or we'll need to scrape it ourselves.

We have, BTW, all the weather data for zip codes. It's just wind speed that' s the problem - esp. gust speed because of the cubic relationship between wind and power generation.

Thanks!

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1 person likes this

7 years ago

fearless_fool

13 Posts
7 Reply Likes

@ghedger: when you say "quick response" do you mean low latency from the wunderground servers? If so, the CSV interface is very fast.

If by "quick response" you instead mean finer granularity than daily average, then you can get reports with about five minute granularity. Ping me if you want the recipe for that (but I'll bet you can figure it out pretty easily).

Best,

- Rob

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1 person likes this

2013-05-09T15:51:27+00:00

ghedger

5 Posts
1 Reply Like

Hi Rob, I found what I needed a month ago from government sources. It turned out to be more complex, requiring a different type of database, but it works. Many thanks!

2013-05-09T15:53:19+00:00

fearless_fool

13 Posts
7 Reply Likes

That's great news! Would you care to share a pointer to the government sources? In my work, more data is better... :)

2013-08-13T06:27:00+00:00

fouroneone

3 Posts
1 Reply Like

http://climate.usurf.usu.edu/mapGUI/m...

7 years ago

ghedger

5 Posts
1 Reply Like

I'll try to dig for them later. Currently embroiled in another problem.
Send me a private e-mail and we can talk more on this if you're interested.

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2013-05-09T16:14:52+00:00

fearless_fool

13 Posts
7 Reply Likes

I AM interested, but I don't see how to do a private e-mail using the forum tools. Can you PM me at rdpoor [atsign] gmail dot com so we can discuss later? Thanks.

7 years ago

Eweglobal

1 Post
0 Reply Likes

I'm also interesting in getting an historical month only in one request.

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7 years ago

mjlewis

0 Posts
0 Reply Likes

Is there a wget option to retrieve multiple days in one request. I used the command wget http://www.wunderground.com/weatherst... but I did not get a csv data file.

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6 years ago

fouroneone

3 Posts
1 Reply Like

I've found most of what I want, emailed to me conveniently, on the Utah Climate Center Website at Utah State University:

http://climate.usurf.usu.edu/mapGUI/m...

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1 person likes this

6 years ago

MichaelWray

1 Post
0 Reply Likes

I'm trying to get historical data by zip code within the US for the past year (since June 2013 or so). Is this possible? How do I go about doing it?

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6 years ago

WunderWilliam

267 Posts
18 Reply Likes

You can get historical data via zip code, but only one date at a time.

Most users create a script for this purpose that automatically increments the date between calls.

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2014-05-01T11:03:17+00:00

teppattra

4 Posts
0 Reply Likes

hi WunderWilliam, hope you can help me... I try to save the history from this url http://www.wunderground.com/weatherst...

but what I get just one blank line and one header line. I debug the program which is C#. What I find is data contain

"\
nDate,TemperatureHighC,TemperatureAvgC,TemperatureLowC,DewpointHighC,DewpointAvgC,DewpointLowC,HumidityHigh,HumidityAvg,HumidityLow,PressureMaxhPa,PressureMinhPa,WindSpeedMaxKMH,WindSpeedAvgKMH,GustSpeedMaxKMH,PrecipitationSumCM
\n"

Can you give me some advice to solve this problem?

thank you in advance.

6 years ago

bidgely

2 Posts
0 Reply Likes

Why can't wunderground provide this? If its purely a money aspect, you could always offer a way to download 1 year worth of historical data and count it as 365 API calls but return it in a single HTTP response. Its just so so inefficient the current way...

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6 years ago

Cody

1 Post
0 Reply Likes

I was interested in this as well, but only out of personal curiosity.. so setting up a loop to do repeated calls isn't a big deal.. If you decide to go that route, under a free license, don't forget to set a timer so you don't exceed the 10 calls per min/500 per day limit.

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