NSF headquarters

Alexandria, Virginia Local Weather

National Science Foundation

The following weather conditions were observed by the weather station at the National Science Foundation, Division of Atmospheric and Geospace Sciences in Alexandria, Virginia, USA.
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Status: Operational.
The value -99.9 represents invalid or missing data.
Most Recent Previous 24 hours
(Oct 13 2025, 15:30) Minimum Maximum
Temperature 16.2°C 14.4°C @ 00:10 18.0°C @ 15:45
Dewpoint 10.6°C 9.9°C @ 15:40 12.1°C @ 20:00
Humidity 70% 60% @ 15:40 83% @ 21:15
Pressure 1004 hPa 1004 hPa @ 14:35 1006 hPa @ 19:45
Aeronautical 1020 hPa 1020 hPa @ 14:35 1022 hPa @ 19:45
Wind Speed 6.7 m/s 2.8 m/s @ 18:35 8.6 m/s @ 11:35
Peak Gust 12.7 m/s 5.6 m/s @ 09:20 16.5 m/s @ 22:10
Wind Chill 10.1°C 7.1°C @ 05:35 14.7°C @ 18:35
Wind Dir 353° (from the N)
Rain 0.0 mm

Weather Plots (5-minute, metric units)

/net/weather/web-data/nsf/plots/nsf_tdry.png /net/weather/web-data/nsf/plots/nsf_rh.png /net/weather/web-data/nsf/plots/nsf_cpres0.png /net/weather/web-data/nsf/plots/nsf_wspd.png /net/weather/web-data/nsf/plots/nsf_wdir.png /net/weather/web-data/nsf/plots/nsf_raina.png
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The realtime information is updated every five minutes. Weekly plots are generated just after 2 pm and 2 am (Eastern Time) every day, while monthly plots are only generated just after 2 am (Eastern Time).

More Links

Contact Nick Anderson nanderso@nsf.gov at NSF for information on the NSF station.

This www weather station was designed at the Earth Observing Laboratory
of the NSF National Center for Atmospheric Research in Boulder, Colorado, USA.

The weather station maintainers can be reached at wwweather@eol.ucar.edu.

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