Washington: Today - Sunny, high in the upper 50s, low near 37. The chance of rain is near zero through tonight. Friday - Sunny, high in the low 50s.

Maryland: Today - Sunny and mild, high in the 50s, low in the 30s. Friday - Sunny, high in the 50s.

Virginia: Today - Sunny and mild, high in th 50s, low in the 30s, Friday - Sunny, high in the 50s.

Extended Area OUtlook for Saturday through Monday - Quite mild through Monday. Chance of showers during the weekend, otherwise partly cloudy. Highs in the mid 60s, lows mostly in the 40s. Normal temperatures for this period ar a high of 44 and a low of 29.

Lower Potomac and Chesapeake Bay: Fair through tonight, winds northwest 12 to 20 knots today diminishing to 10 knots or less tonight. Waves will average 2 to 3 feet.

West Virginia: Today - Partly cloudy, high in low 40s to low 50s, low in the 30s. Friday - Partly cloudy, high in the 50s.

The National Weather Forecast for today: Rain will be widespread over the East, extending from the Atlantic Coast to the upper Ohio and Tennessee Valleys across the central Gulf of Mexico Coast. Thuderstorms will be scattered through the Southeast, while snow will fall over northern New England. Rain will extend from the northern half of the Rockies across the Pacific Coast from central California through Washington. Skies will be mostly sunny over the Southwest, the Great Plains and the Mississippi Valley. Temperatures will be mild over most of the nation, but it will be cold over New England.

Almanac Data for today - Sun Rises 7:19 a.m., sets 4:47 p.m.; moon rises 11:08 a.m., sets 10:46 p.m.; Tides: high 11:43 a.m. and low 6:06 a.m., and 6:28 p.m. HIgh and low tides at the following locations may be obtained by subtracting the hours indicated from the tides above. Annapolis (1 1/2), Bloody Point Lighthouse (4 1/2), Deale, Md. (4 1/2), Colonial Beach (6), Norfolk (1 1/2), Virginia Beach (1), Solomons Island (6 1/2), Point Lookout (7).

The Council of Govwenments' Air Quality Index for yesterday showed the high reading in the Washington area during the 2 p.m. to 3 p.m. period was 14 for the pollutant, carbon monoxide. Index values between 0 and 24 indicate good air quality. When the index exceeds 100 the air is considered very unhealthy and individuals with lung, heart and eye ailments are urged to restrict their activity. The forecast for today indicates that the air quality will remain good.

The National Weather Service forecasts the Potamac River stage at Little Falls should remain near 3.8 feet today. Local Temp. Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 midnight(COLUMN)37(COLUMN)67 1 a.m.(COLUMN)37(COLUMN)67 2 a.m.(COLUMN)37(COLUMN)67 3 a.m.(COLUMN)38(COLUMN)70 4 a.m.(COLUMN)39(COLUMN)67 5 a.m.(COLUMN)39(COLUMN)70 6 a.m.(COLUMN)40(COLUMN)70 7 a.m.(COLUMN)41(COLUMN)67 8 a.m.(COLUMN)41(COLUMN)70 9 a.m.(COLUMN)42(COLUMN)73 10 a.m.(COLUMN)44(COLUMN)76 11 a.m.(COLUMN)46(COLUMN)89 12 noon(COLUMN)48(COLUMN)86 1 p.m.(COLUMN)53(COLUMN)83 2 p.m.(COLUMN)54(COLUMN)90 3 p.m.(COLUMN)53(COLUMN)90 4 p.m.(COLUMN)53(COLUMN)93 5 p.m.(COLUMN)55(COLUMN)86 6 p.m.(COLUMN)54(COLUMN)93 7 p.m.(COLUMN)53(COLUMN)93(END TABLE)(TABLE) 55(COLUMN)86 6 p.m.(COLUMN)54(COLUMN)93 7 p.m.(COLUMN)53(COLUMN)93 (END TABLE) Temperatures ending 7 p.m. (EST) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)34(COLUMN)24 Alburquerque(COLUMN)53(COLUMN)27 Amarillo(COLUMN)56(COLUMN)28 Anchorage(COLUMN)10(COLUMN)03 Asheville(COLUMN)53(COLUMN)49 Atlanta City(COLUMN)22(COLUMN)41 Austin(COLUMN)72(COLUMN)43 Balitmore(COLUMN)43(COLUMN)32 Billings(COLUMN)43(COLUMN)40 Birmingham(COLUMN)62(COLUMN)58 Bismarck(COLUMN)29(COLUMN)09 Boise%H5s(COLUMN)43(COLUMN)40 Birmingham(COLUMN)62(COLUMN)58 Bismarck(COLUMN)29(COLUMN)09 Boise(COLUMN)50(COLUMN)46 Boston(COLUMN)23(COLUMN)22 Brownsville(COLUMN)78(COLUMN)49 Buffalo(COLUMN)42(COLUMN)39 Burlington, Vt.(COLUMN)22(COLUMN)18 Casper(COLUMN)45(COLUMN)39 Charleston, S.C.(COLUMN)65(COLUMN)58 Chastn, W.V.(COLUMN)60(COLUMN)59 Charlotte, N.C.(COLUMN)58(COLUMN)48 Cheyenne(COLUMN)46(COLUMN)40 Chicago(COLUMN)40(COLUMN)38 Cincinnati(COLUMN)49(COLUMN)44 Cleveland(COLUMN)45(COLUMN)41 Columbia, S.C.(COLUMN)67(COLUMN)54 Columbus, Ohio(COLUMN)46(COLUMN)44 Dal. Ft.-Worth(COLUMN)65(COLUMN)36 Dayton(COLUMN)49(COLUMN)45 Denver(COLUMN)57(COLUMN)35 Des Moines(COLUMN)45(COLUMN)31 Detroit(COLUMN)33(COLUMN)35 Duluth(COLUMN)29(COLUMN)19 El Paso(COLUMN)62(COLUMN)29 Fairbanks(COLUMN)-16(COLUMN)-48 Fargo(COLUMN)18(COLUMN)17 Flagstaff(COLUMN)60(COLUMN)19 Great Falls(COLUMN)48(COLUMN)42 Hartford(COLUMN)21(COLUMN)19 Helena(COLUMN)47(COLUMN)36 Honolulu(COLUMN)89(COLUMN)72 Houston(COLUMN)72(COLUMN)51 Indianapolis(COLUMN)43(COLUMN)40 Jackson(COLUMN)65(COLUMN)52 Jacksonville(COLUMN)72(COLUMN)61 Juneau(COLUMN)30(COLUMN)27 Kansas City(COLUMN)51(COLUMN)31 Las Vegas(COLUMN)67(COLUMN)41 Little Rock(COLUMN)56(COLUMN)41 Los Angeles(COLUMN)78(COLUMN)52 Louisville(COLUMN)55(COLUMN)48 Memphis(COLUMN)59(COLUMN)55 Miami Beach(COLUMN)77(COLUMN)74 Midland-Odessa(COLUMN)65(COLUMN)35 Milwaukee(COLUMN)37(COLUMN)34 Mols. St. Paul(COLUMN)35(COLUMN)25 Nashville(COLUMN)57(COLUMN)54 New Orleans(COLUMN)72(COLUMN)54 New York(COLUMN)38(COLUMN)32 Norfold(COLUMN)60(COLUMN)49 North Platte(COLUMN)53(COLUMN)17 Oklahoma City(COLUMN)62(COLUMN)31 Omaha(COLUMN)53(COLUMN)29 Orlando(COLUMN)77(COLUMN)70 Philadelphia(COLUMN)39(COLUMN)27 Phoenix(COLUMN)75(COLUMN)45 Pittsburg(COLUMN)49(COLUMN)45 Portland, Me.(COLUMN)12(COLUMN)09 Portland, Ore.(COLUMN)61(COLUMN)52 Providence(COLUMN)23(COLUMN)21 Raleigh(COLUMN)54(COLUMN)42 Rapid City(COLUMN)46(COLUMN)29 Reno(COLUMN)57(COLUMN)47 Richmond(COLUMN)65(COLUMN)43 St. Louis(COLUMN)52(COLUMN)33 St. Prbg. Tamoa(COLUMN)75(COLUMN)70 Salt Lake City(COLUMN)49(COLUMN)45 San Antonio(COLUMN)75(COLUMN)37 San Diego(COLUMN)73(COLUMN)54 San Francisco(COLUMN)61(COLUMN)54 San Juan, P.R.(COLUMN)84(COLUMN)75 St. Ste. Marie(COLUMN)33(COLUMN)31 Seattle(COLUMN)56(COLUMN)51 Shreveport(COLUMN)62(COLUMN)39 Sioux Falls(COLUMN)23(COLUMN)19 Spokane(COLUMN)47(COLUMN)40 Syracuse(COLUMN)34(COLUMN)27 Topeka(COLUMN)55(COLUMN)22 Tucson(COLUMN)59(COLUMN)29 Washington(COLUMN)52(COLUMN)36 Wichita(COLUMN)58(COLUMN)26(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)cloudy(COLUMN)90(COLUMN)75 Barbados(COLUMN)cloudy(COLUMN)86(COLUMN)73 Bermuda(COLUMN)fair(COLUMN)68(COLUMN)60 Bogota(COLUMN)pt. cldy(COLUMN)68(COLUMN)41 Culican(COLUMN)sunny(COLUMN)87(COLUMN)55 Havana(COLUMN)fair(COLUMN)84(COLUMN)72 Kingston(COLUMN)pt. cldy.(COLUMN)87(COLUMN)75 Montego Bay(COLUMN)Pt. cldy.(COLUMN)84(COLUMN)70 Mexico Bay(COLUMN)pt. cldy.(COLUMN)61(COLUMN)45 Monterrey(COLUMN)clear(COLUMN)77(COLUMN)45 Nassau(COLUMN)Pt. cldy.(COLUMN)73(COLUMN)72 St. Kitts(COLUMN)pt. cldy.(COLUMN)85(COLUMN)73 St. Thomas(COLUMN)pt. cldy(COLUMN)85(COLUMN)75 Veracruz(COLUMN)cloudy(COLUMN)84(COLUMN)63(END TABLE)