TAF (Terminal Aerodrome Forecast)
KIAD 291123Z 2912/3018 23003KT P6SM SKC FM291400 28005KT P6SM FEW250 FM291900 20008KT P6SM SCT045 SCT250 FM300000 19007KT P6SM FEW250 FM301400 22007KT P6SM SCT050 BKN250
METAR (METeorological Aerodrome Report)
KIAD 291152Z 18003KT 10SM FEW250 19/16 A3005 RMK AO2 SLP172 T01940156 10200 20139 51008
KIAD 291052Z 00000KT 10SM CLR 15/13 A3004 RMK AO2 SLP169 T01500133
KIAD 290952Z 00000KT 10SM CLR 16/13 A3004 RMK AO2 SLP168 T01560133
KIAD 290852Z 00000KT 10SM CLR 18/14 A3002 RMK AO2 SLP164 T01830139 55003