APRS/CWOP weather report from AT402 – aprs.fi

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Location:	38°56.09' N 77°23.77' W - locator FM18HW24LI - show map 4.0 km South bearing 193° from Herndon, Fairfax County, Virginia, United States [?] 6.1 km Southwest bearing 232° from Reston, Fairfax County, Virginia, United States 31.4 km West bearing 278° from Washington, D. C., Washington, D.C., United States 78.3 km Southwest bearing 240° from Baltimore, City of Baltimore, Maryland, United States
Last WX report:	2025-07-29 01:49:03 UTC (4m42s ago) 2025-07-28 21:49:03 EDT local time at Herndon, United States [?]
Temperature:	27.8 °C
Dew point:	22.5 °C
Humidity:	73 %
Pressure:	1015.8 mbar
Wind:	Southeast 118° 0.0 m/s (Gusts 0.0 m/s)
Rain:	0.0 mm during last 1 hour, 0.0 mm during last 24 hours, 0.0 mm since midnight

This page shows weather data collected mostly by privately owned and operated weather stations. Stations with a CW-prefixed, numbered callsign are taking part in the Citizen Weather Observer Program (CWOP). Most other weather stations are amateur radio operators with a weather station. Some information is also converted by individuals from publicly available sources like airport weather reports.