Washington: Today - Sunny, high near 40, low near 20. The chance of precipitation is near zero through tonight. Wind will be light from the northeast. Saturday - Sunny, high near 40.

Maryland and Virginia: Today - Sunny, highs from the mid 20s to the 30s, lows from near 10 below zero to the teens. Saturday - Sunny, high from the mid 20s to the 30s.

Lower Potomac and Chespeake Bay: Today - Fair with visibility of more than 5 miles. Wind will be from the northeast at from 10 to 15 knots. Wave motion will be restricted by ice.

Extended Area Forecast for Sunday through Tuesday: It will become increasingly cloudy on Sunday with snow or rain likely by Monday and on Tuesday. Highs will be from the mid 30s to the mid 40s, lows from the mid 20s to the mid 30s. Normal Washington temperatures for the period are a high of 45 and a low of 28.

West Virginia: Today - Sunny, highs from the upper 20s to the mid 30s, low from near zero the mid teens. Saturday - Sunny, highs from the upper 20s to the mid 30s.

The National Weather Forecast for today - showers, with snow in the higher elevations, will scatter over a large area from the Pacific Coast into the Rockies. Some snoe will also extend into the northern Plains. Cloudy skies will cover the central and southern sections of the Plains and Mississippi Valley, as well as over most of the Gulf Coast. The East will have mostly clear skies, except for some snow flurries in extreme northern New England. Temperatures will remain cold east of the Rockies, it will be colder in the Plateau. The West W. I have seasonably cool temperatures.

Almanac Data for today - sunrises 7:06 a.m., sets 5:40 p.m., moon rises 8:47 a.m., sets 9:21 p.m., Tides: high 10:11 a.m. and 10:34 p.m., low 4:29 a.m. and 4:52 p.m. High and low tides at the following locations may be obtained by substracting 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 Islands (6 1/2), Point Lookout (7).

The Council of Governments' Air Quality Index for yesterday showed the high reading in the Washington area - during the 2 p.m. to 3 p.m. period was 28 for the pollutant, photochemical oxidants. Index values between 25 and 49 indicate fair air quality. When the index exceeds 100 the air is considered very unhealty and individuals with lung, heart and eye ailments are urged to restrict their activity. The forecast for today indicates the air quality will improve.

The National Weather Service forecast the Potomac River stage at Little Falls should be near 3.6 feet today. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 midnite(COLUMN)30(COLUMN)61 1 a.m.(COLUMN)29(COLUMN)61 2 a.m.(COLUMN)27(COLUMN)66 3 a.m.(COLUMN)25(COLUMN)68 4 a.m.(COLUMN)24(COLUMN)71 5 a.m.(COLUMN)23(COLUMN)74 6 a.m.(COLUMN)23(COLUMN)74 7 a.m.(COLUMN)22(COLUMN)74 8 a.m.(COLUMN)23(COLUMN)71 9 a.m.(COLUMN)26(COLUMN)68 10 a.m.(COLUMN)30(COLUMN)54 11 a.m.(COLUMN)33(COLUMN)49 12 noon(COLUMN)35(COLUMN)48 1 p.m.(COLUMN)36(COLUMN)48 2 p.m.(COLUMN)38(COLUMN)42 3 p.m.(COLUMN)38(COLUMN)37 4 p.m.(COLUMN)38(COLUMN)32 5 p.m.(COLUMN)37(COLUMN)31 6 p.m.(COLUMN)33(COLUMN)32 7 p.m.(COLUMN)32(COLUMN)32(END TABLE) Temperatures ending 8 a.m. (EST) yesterday:(TABLE) H(COLUMN)L Albany(COLUMN)27(COLUMN)-7 AlbuquerqueDH51(COLUMN)30 Amarillo 23 14 Anchorage(COLUMN)20(COLUMN)15 Ansheville(COLUMN)37(COLUMN)17 Atlanta(COLUMN)40(COLUMN)31 Atlantic City(COLUMN)33(COLUMN)21 Austin(COLUMN)33(COLUMN)32 Baltimore(COLUMN)34(COLUMN)15 Billings(COLUMN)17(COLUMN)8 Birmingham(COLUMN)38(COLUMN)21 Bismarch(COLUMN)14(COLUMN)11 Boise 49(COLUMN)42 Boston(COLUMN)37(COLUMN)16 Brownsville(COLUMN)49(COLUMN)43 Buffalo(COLUMN)23(COLUMN)9 Burlington(COLUMN)20(COLUMN)-8 Casper(COLUMN)36(COLUMN)25 Charleston, S.C.(COLUMN)43(COLUMN)33 Charleston, W.Va.(COLUMN)27(COLUMN)7 Cheyenne(COLUMN)32(COLUMN)15 Chicago(COLUMN)26(COLUMN)24 Cincinnati(COLUMN)25(COLUMN)7 Cleveland(COLUMN)27(COLUMN)4 Columbia, S.C.(COLUMN)39(COLUMN)29 Columbus(COLUMN)27(COLUMN)5 Dal Ft.Worth(COLUMN)29(COLUMN)25 Dayton(COLUMN)21(COLUMN)2 Denver(COLUMN)29(COLUMN)25 Des Moines(COLUMN)19(COLUMN)8 Detroit(COLUMN)27(COLUMN)16 Duluth(COLUMN)23(COLUMN)17 El Paso(COLUMN)62(COLUMN)42 Fairbanks(COLUMN)-15(COLUMN)-18 Fargo(COLUMN)18(COLUMN)5 Flagstaff(COLUMN)44(COLUMN)34 Great Falls(COLUMN)23(COLUMN)-4 Harford(COLUMN)35(COLUMN)-1 Helena(COLUMN)44(COLUMN)16 Honolulu(COLUMN)82(COLUMN)71 Houston(COLUMN)46(COLUMN)39 Indianapolis(COLUMN)23(COLUMN)5 Jackson, Miss.(COLUMN)41(COLUMN)26 Jacksonville(COLUMN)49(COLUMN)40 Juneau(COLUMN)46(COLUMN)29 Kansas City(COLUMN)23(COLUMN)17 Las Vegas(COLUMN)66(COLUMN)48 Little Rock(COLUMN)28(COLUMN)22 Los Angeles(COLUMN)66(COLUMN)53 Louisville(COLUMN)27(COLUMN)9 Memphis(COLUMN)33(COLUMN)23 Miami Beach(COLUMN)69(COLUMN)60 Midland-Odessa(COLUMN)43(COLUMN)31 Milwaukee(COLUMN)26(COLUMN)23 Mpls. St. Paul(COLUMN)24(COLUMN)-1 Nashville(COLUMN)34(COLUMN)15 New Orleans(COLUMN)42(COLUMN)33 New York(COLUMN)35(COLUMN)17 Norfolk(COLUMN)33(COLUMN)30 North Platte(COLUMN)12(COLUMN)4 Oklahoma City(COLUMN)26(COLUMN)23 Omaha(COLUMN)18(COLUMN)12 Orlando$68(COLUMN)58 Philadelphia(COLUMN)32(COLUMN)15 Phoenix(COLUMN)68(COLUMN)56 Pittsburgh(COLUMN)29(COLUMN)15 Portland, Maine(COLUMN)32(COLUMN)-4 Portland, Ore(COLUMN)54(COLUMN)44 Providence(COLUMN)31(COLUMN)7 Raleigh(COLUMN)38(COLUMN)26 Rapid City(COLUMN)16(COLUMN)13 Reno(COLUMN)46(COLUMN)37 Richmond(COLUMN)37(COLUMN)21 St. Louis(COLUMN)23(COLUMN)5 ST. Prba-Tampa(COLUMN)61(COLUMN)50 Salt Lake City(COLUMN)46(COLUMN)34 San Antonio(COLUMN)37(COLUMN)34 San Diego(COLUMN)67(COLUMN)60 San Francisco(COLUMN)56(COLUMN)52 San Juan(COLUMN)87(COLUMN)71 St. Ste. Marie(COLUMN)22(COLUMN)-1 Seattle(COLUMN)57(COLUMN)43 Shreveport(COLUMN)37(COLUMN)25 Sioux Falls(COLUMN)15(COLUMN)12 Spokane(COLUMN)47(COLUMN)34 Syracuse(COLUMN)27(COLUMN)-1 Topeka(COLUMN)23(COLUMN)20 Tucson(COLUMN)63(COLUMN)45 Tulsa(COLUMN)28(COLUMN)22 Washington(COLUMN)38(COLUMN)22 Wichita(COLUMN)22(COLUMN)19(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Tem Aberddeen(COLUMN)haze(COLUMN)1 p.m.(COLUMN)27 Amsterdam(COLUMN)pt.cldy(COLUMN)1 p.m.(COLUMN)28 Ankara(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)45 Athens(COLUMN)clear(COLUMN)2 p.m.(COLUMN)55 Aucland(COLUMN)clear(COLUMN)m-night(COLUMN)63 Berlin(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)28 Birmigham(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)30 Brussels(COLUMN)pt. cldy(COLUMN)1 p.m..(COLUMN)28 Casablanca(COLUMN)cloudy(COLUMN)noon(COLUMN)61 Copenhagen(COLUMN)clear(COLUMN)1 p.m.(COLUMN)25 Dublin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)34 Geneva(COLUMN)pt. cldy.(COLUMN)32 Hong Kong(COLUMN)pt. cldy(COLUMN)8 p.m.(COLUMN)72 Lisbon(COLUMN)cloudy(COLUMN)noon London(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)34 Madrid(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)46 Malta(COLUMN)clear(COLUMN)6 p.m.(COLUMN)93 Manila(COLUMN)clear(COLUMN)8 p.m.(COLUMN)79 Moscow(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)93 New Delhi(COLUMN)pt. cldy.(COLUMN)5 p.m.(COLUMN)64 Nices(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)48 Oslo(COLUMN)clear(COLUMN)1 p.m.(COLUMN)18 Paris(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)32 Peking(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)23 Rome(COLUMN)haze(COLUMN)1 p.m.(COLUMN)45 18 Peking(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)23 Rome(COLUMN)haze(COLUMN)1 p.m.(COLUMN)45 Saigon(COLUMN)clear(COLUMN)8 p.m.(COLUMN)81 Sofia(COLUMN)clear(COLUMN)2 p.m.(COLUMN)36 Stockholm(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)23 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)90 Tel Aviv(COLUMN)clear(COLUMN)2 p.m.(COLUMN)66 Tokyo(COLUMN)rain(COLUMN)9 p.m.(COLUMN)41 Tunis(COLUMN)clear(COLUMN)1 p.m.(COLUMN)47 Vienna(COLUMN)snow(COLUMN)1 p.m.(COLUMN)25 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)21(END TABLE) Temperatures (Western Hemisphere)(TABLE) Weather(COLUMN)H(COLUMN)L Acapulco(COLUMN)clear(COLUMN)86(COLUMN)68 Barbados(COLUMN)clear(COLUMN)84(COLUMN)77 Bermuda(COLUMN)cloudy(COLUMN)82(COLUMN)58 Bogata(COLUMN)cloudy(COLUMN)66(COLUMN)49 Calgary(COLUMN)snow(COLUMN)12(COLUMN)7 Culiacan(COLUMN)clear(COLUMN)82(COLUMN)15 Edmonton(COLUMN)snow(COLUMN)14(COLUMN)10 Havana(COLUMN)fair(COLUMN)77(COLUMN)66 Kingston(COLUMN)pt. cldy(COLUMN)86(COLUMN)86 Montego Bay(COLUMN)cloudy(COLUMN)82(COLUMN)75 Mexico City(COLUMN)haze(COLUMN)68(COLUMN)41 Monterrey(COLUMN)clear(COLUMN)56(COLUMN)41 Montreal(COLUMN)cloudy(COLUMN)21(COLUMN)1 Nassau(COLUMN)clear(COLUMN)72(COLUMN)66 Ottawa(COLUMN)clear(COLUMN)23(COLUMN)5 Regina(COLUMN)snow(COLUMN)10(COLUMN)1 St. Kitts(COLUMN)pt. cldy(COLUMN)87(COLUMN)71 St. Thomas(COLUMN)pt. cldy(COLUMN)83(COLUMN)71 Toronto(COLUMN)clear(COLUMN)23(COLUMN)5 Vancouver(COLUMN)rain(COLUMN)52(COLUMN)43 Veracruz(COLUMN)cloudy(COLUMN)79(COLUMN)61 Winnipeg(COLUMN)clear(COLUMN)12(COLUMN)-15(END TABLE)