NonFedAWOS Information for KIAD (IAD) in DULLES INTERNATIONAL AIRPORT, VA, United States (site inactive)
The following information is known about KIAD. If you think that any information is incorrect,
then please follow the instructions for correcting that data item.
It is possible that this page will report a problem where no problem exists. If you believe that
this has happened, then please contact me (address at the bottom of this page) and explain clearly
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please give it a week before commenting.
Latitude: 38° 56' 51" N (deg min sec), 38.9474° (decimal), 3856.85N (LORAN) Longitude: 77° 27' 36" W (deg min sec), -77.4599° (decimal), 07727.60W (LORAN) Elevation: 98 metres (322 feet) -- validated against 86 metres (282 feet) from NED 1/9th arc-second: Loudoun County Virginia Location: DULLES INTERNATIONAL AIRPORT, VA, United States County: Loudoun, VA
Data provider: SAI
Forecast Office: Baltimore/Washington (LWX) Airport diagram: PDF from FAA Automated weather phone (ASOS): 703-661-2990
Observing program(s): ASOS COOP
If the displayed location (or elevation) of the weather observing location is incorrect, please drag the marker to the right location (or click in the right location), and then send the updated information.
Please note that we are trying to spot either the Stevenson Screen (or equivalent) or the location where the barometric readings are taken.
Can you help with location quality? Please indicate
if the marker on the map points at the weather instrument cluster:
The location information for this site was gathered from 16 data sources. The possible locations for this site are up to 7307.2 miles away.
This makes it possible that the location chosen is incorrect. The source which most closely matches the consensus is chosen. Many of these sources
only report the location to the nearest minute (or hundredth of degree). This can lead to the marker being placed noticeably incorrectly. Please see Discussion of Location Errors for more information.
Show location history.
Date
Latitude
Longitude
Elevation
Name
2007-11-28
38.9445
-77.4558
98
Wash Dc/dulles, US
2007-11-29
38.9445
-77.4558
98
Washington/dulle, VA
2007-11-29
38.9445
-77.4558
88
Washington/dulle, VA
2007-12-03
38.9445
-77.4558
88
Washington/dulle, VA
2008-01-03
38.9445
-77.4558
88
Washington/dulle, VA, United States
2009-01-03
38.9445
-77.4558
98
Washington/dulle, VA, United States
2009-01-29
38.9445
-77.4558
95
Washington/dulle, VA, United States
2009-04-17
38.9445
-77.4558
98
Washington/dulle, VA, United States
2009-10-14
38.9445
-77.4558
98
Wash Dc/dulles, US
2010-08-14
38.9408
-77.4636
98
Washington Dulles International Airport, United States of America
2010-09-01
38.9445
-77.4558
98
Washington Dulles International Airport, United States of America
2010-10-30
38.9408
-77.4636
95
Washington Dulles International Airport, United States of America
2011-03-16
38.9474
-77.4599
95
Dulles International Airport, VA, United States of America
2011-03-18
38.9474
-77.4599
93
Dulles International Airport, VA, United States of America
2011-03-25
38.9445
-77.4558
93
Washington Dulles International Airport, United States of America
2011-03-26
38.9445
-77.4558
95
Washington Dulles International Airport, United States of America
Latitude: dummy (deg min sec), dummy (decimal), dummy (LORAN)
Longitude: dummy (deg min sec), dummy (decimal), dummy (LORAN)
Estimated elevation is dummy metres (dummy feet) from dummy.
Location is dummy (reverse geocoded).
Move marker to new address.
The station (or view from the station) is shown here. You can choose the view direction to see the surroundings. Other information (and somewhat larger images) can be found by clicking on the picture.
You can try to find photographs from the area surrounding the site marker by clicking on Find nearby photographs.(There are some)(There are none)(There may be some)(Automatically loaded if any)
Status: Status: None found.
Clicking on the map above will redo the search centered on the clicked point.
Status: 3 found.
If any images are of the weather station, then please click on those images, and add the 'wxtagged' and 'wx:id=KIAD' tags to those images. For the station itself, please add the 'wx:station' tag as well.
Some users do not permit other users to add tags to their images. In these cases, just add a comment to the picture asking the photographer to add the tags themselves.
Clicking on the map above will redo the search centered on the clicked point.
You can try to find photographs from the area surrounding the selected point by clicking on Find nearby photographs.
This is a list of stations that are close to this station.
You can look at those for comparison purposes.
The average difference between your station and each station below is listed as well. This may allow you to detect local
stations which are erroneous. You can also use these numbers to adjust your instruments -- especially if a number of ASOS stations
have similar differences to your station. Also, try increasing the analysis period to more than the default 28 days.
The difference is only given if both stations report reasonably often during each day. Some stations
only report every 6 hours, and this makes the average of less interest. In this case, the average is not displayed.
The values reported are the differences between this station and the neighboring station. I.e. if the difference is positive, then this station is reading higher than the neighboring station.
Overall website comments, problems etc to Philip Gladstone Page layout last modified Sunday, 28 February 2016
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