Washington: Today - Variably cloudy, high near 60, low near 40. The chance of rain 20 percent today, and 10 percent tonight. Wind will be from the northwest at from 10 to 20 mph. Saturday - Sunny high in mid 60s.

Maryland and Virginia: Today - Variably cloudy, highs from the mid 80s to the low 60s, lows from the upper 20s to the mid 40s. Saturday - Sunny, highs from the upper 40s to the mid 60s.

Lower Potomac and Chesapeake Bay: Today - Partly cloudy with visibility of more than 5 miles. Wind will be from the northwest at less than 22 knots.

Extended Area Forecast for Sunday through Tuesday: Cloudy with a chance of rain on Sunday and Monday, clearing on Tuesday. Higher will be from the 50s to the mid 60s, lows from the upper 30s to the 40s. Normal Washingon temperatures for the period are a high of 70 and a low of 49.

West Virginia: Today - Cloudy, chance of rain, highs in the 40s, lows in the 20s. Saturday - Sunny, highs in the 20s.

The National Weather Forecast for today - Scattered showers will fall from the Pacific Northwest across the northern and central Plateau into the northern and central Rockies.There will be a chance of showers from the upper Ohio Valley and the eastern Great Lakes into New England and over portions of the central and southern Plains. Skies will be mostly sunny from the central and southern Pacific Coast to the southern Rockies - and over most of the nation east of the Rookies, except fot the Northeast. Temperatures will be cool over much of the country, with mild readings restricted to the South.

Almanac Data: for today: The sun rises 5:24 a.m., sets 6:51 p.m.; moon rises 5:26 p.m., sets 4:32 a.m. Tides high 6:29 a.m. and 6:55 p.m., low 12:55 a.m. and 1:27 p.m. High and low tides at the following locations may be obtained by subtracting the hours indicated from the hours above: Annapolis (3 1/4), Bloody Point Lighthouse (4 1/2), Deale, Md. (4 1/2), Colonial Beach (5 1/4), Norfolk (1), Virginia Beach (3/4), Solomons Island (6 1/4), Point Lookout (7).

Pollen Count: 68 trees - incomplete due to rain (a reading of more than 7 is considered to be undersirable).

The Council of Government's Air Quality Index for yesterday showed the high reading in the Washington area during the 2 p.m. to 3 p.m. period was 23 for the polluttant, photochemical oxidants index values between zero 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 be good.

The National Weather Service forecasts the Potomac River stage at Little Falls should be near 4.1 feet today. Local Temp., Humidity(TABLE) 12 m-n(COLUMN)55(COLUMN)90 1 a.m.(COLUMN)55(COLUMN)80 2 a.m.(COLUMN)54(COLUMN)80 3 a.m.(COLUMN)55(COLUMN)83 4 a.m.(COLUMN)53(COLUMN)83 5 a.m.(COLUMN)53(COLUMN)77 6 a.m.(COLUMN)52(COLUMN)80 7 a.m.(COLUMN)53(COLUMN)83 8 a.m.(COLUMN)54(COLUMN)77 9 a.m.(COLUMN)55(COLUMN)80 10 a.m.(COLUMN)59(COLUMN)53 11 a.m.(COLUMN)60(COLUMN)48 12 noon(COLUMN)61(COLUMN)43 1 p.m.(COLUMN)61(COLUMN)44 2 p.m.(COLUMN)60(COLUMN)44 3 p.m.(COLUMN)56(COLUMN)55 4 p.m.(COLUMN)56(COLUMN)55 5 p.m.(COLUMN)56(COLUMN)55 6 p.m.(COLUMN)57(COLUMN)55 7 p.m.(COLUMN)57(COLUMN)49(END TABLE) Temperatures ending 7 a.m. (EST) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)48(COLUMN)41 Albuquerque(COLUMN)74(COLUMN)40 Amarillo(COLUMN)65(COLUMN)42 Anchorage(COLUMN)52(COLUMN)32 Asheville(COLUMN)67(COLUMN)43 Atlanta(COLUMN)73(COLUMN)43 Atlantic City(COLUMN)51(COLUMN)48 Austin(COLUMN)88(COLUMN)50 Baltimore(COLUMN)57(COLUMN)50 Billings(COLUMN)31(COLUMN)29 Birmingham(COLUMN)67(COLUMN)46 Bismarck(COLUMN)44(COLUMN)25 Boise(COLUMN)73(COLUMN)46 Boston(COLUMN)50(COLUMN)45 Brownsville(COLUMN)84(COLUMN)63 Buffalo(COLUMN)58(COLUMN)39 Burlington(COLUMN)52(COLUMN)40 Casper(COLUMN)53(COLUMN)24 Charleston, S.C.(COLUMN)76(COLUMN)52 Charl'ton W.Va(COLUMN)69(COLUMN)44 Charlotte(COLUMN)73(COLUMN)41 Cheyenne(COLUMN)52(COLUMN)26 Chicago(COLUMN)49(COLUMN)39 Cincinnati(COLUMN)58(COLUMN)43 Cleveland(COLUMN)69(COLUMN)40 Columbia, S.C.(COLUMN)78(COLUMN)46 Columbus, Ohio(COLUMN)63(COLUMN)43 Dal. Ft. Worth(COLUMN)71(COLUMN)41 Dayton(COLUMN)61(COLUMN)41 Denver(COLUMN)55(COLUMN)32 Des Moines(COLUMN)45(COLUMN)34 Detroit(COLUMN)62(COLUMN)44 Duluth(COLUMN)50(COLUMN)28 El Paso(COLUMN)80(COLUMN)49 Fairbanks(COLUMN)52(COLUMN)29 Fargo(COLUMN)37(COLUMN)25 Flagstaff(COLUMN)62(COLUMN)27 Great Falls(COLUMN)54(COLUMN)36 Hartford(COLUMN)54(COLUMN)45 Helena(COLUMN)65(COLUMN)41 Honolulu(COLUMN)84(COLUMN)73 Houston(COLUMN)77(COLUMN)54 Indianapolis(COLUMN)57(COLUMN)45 Jackson, Miss.(COLUMN)69(COLUMN)41 Jacksonville(COLUMN)84(COLUMN)53 Juneau(COLUMN)62(COLUMN)33 Kansas City(COLUMN)44(COLUMN)35 Las Vegas(COLUMN)83(COLUMN)60 Little Rock(COLUMN)60(COLUMN)41 Los Angeles(COLUMN)74(COLUMN)55 Louisville(COLUMN)61(COLUMN)46 Memphis(COLUMN)65(COLUMN)50 Miami Beach(COLUMN)81(COLUMN)75 Midland-Odessa(COLUMN)71(COLUMN)49 Milwaukee(COLUMN)43(COLUMN)38 Mpls-St. PauL(COLUMN)44(COLUMN)35 Nashville(COLUMN)63(COLUMN)46 New Orleans(COLUMN)86(COLUMN)56 New York(COLUMN)50(COLUMN)46 Norfolk(COLUMN)72(COLUMN)51 North Platte(COLUMN)48(COLUMN)21 Okahoma City(COLUMN)65(COLUMN)40 Omaha(COLUMN)40(COLUMN)27 Orlando(COLUMN)83(COLUMN)68 Philadephia(COLUMN)54(COLUMN)48 Phoenix(COLUMN)89(COLUMN)57 Portland, Ore.(COLUMN)60(COLUMN)41 Providence(COLUMN)75(COLUMN)45 Raleigh(COLUMN)75(COLUMN)45 Rapid City(COLUMN)45(COLUMN)29 Reno(COLUMN)62(COLUMN)45 Richmond(COLUMN)70(COLUMN)51 St. Louis(COLUMN)49(COLUMN)41 St. Prbg. Tampa(COLUMN)80(COLUMN)68 Salt Lake City(COLUMN)68(COLUMN)45 San Antonio(COLUMN)80(COLUMN)53 San Diego(COLUMN)70(COLUMN)61 San Francisco(COLUMN)64(COLUMN)51 San Juan(COLUMN)86(COLUMN)73 St. Ste. Marie(COLUMN)45(COLUMN)34 Seattle(COLUMN)58(COLUMN)42 Shreveport(COLUMN)71(COLUMN)39 Sioux Falls(COLUMN)35(COLUMN)26 Spokane(COLUMN)67(COLUMN)40 Syracuse(COLUMN)50(COLUMN)42 Topeka(COLUMN)47(COLUMN)35 Tucson(COLUMN)58(COLUMN)37 Washington(COLUMN)58(COLUMN)52 Wichita(COLUMN)59(COLUMN)31(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)rain(COLUMN)1 p.m.(COLUMN)45 Amsterdam(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)59 Ankara(COLUMN)pt. cldy.(COLUMN)3 p.m.(COLUMN)48 Athens(COLUMN)rain(COLUMN)2 p.m.(COLUMN)54 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)45 Birmingham(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)52 Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Cairo(COLUMN)clear(COLUMN)2 p.m.(COLUMN)79 Casablanca(COLUMN)cloudy(COLUMN)noon(COLUMN)64 Copenhagen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)41 Dublin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)50 Geneva(COLUMN)rain(COLUMN)1 p.m.(COLUMN)48 Hong Kong(COLUMN)clear(COLUMN)8 p.m.(COLUMN)77 Lisbon(COLUMN)pt. cldy.(COLUMN)noon(COLUMN)64 London(COLUMN)rain(COLUMN)1 p.m.(COLUMN)48 Madrid(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)66 Malta(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)63 Manila(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)88 Moscow(COLUMN)clear(COLUMN)3 p.m.(COLUMN)30 New Delhi(COLUMN)pt. cldy.(COLUMN)5 p.M.(COLUMN)95 Nice(COLUMN)rain(COLUMN)1 p.m.(COLUMN)57 Oslo(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)50 Paris(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)52 Peking(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)54 Rome(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)59 Sofia(COLUMN)pt. cldy.(COLUMN)2 p.m.(COLUMN)54 Stockholm(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)37 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)64 Tel Aviv(COLUMN)pt. cldy.(COLUMN)2 p.m.(COLUMN)72 Tokyo(COLUMN)cloudy(COLUMN)9 p.m.(COLUMN)59 Tunis(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)63 Vienna(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)52 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)fair(COLUMN)86(COLUMN)70 Barbados(COLUMN)fair(COLUMN)86(COLUMN)77 Bermuda(COLUMN)cloudy(COLUMN)66(COLUMN)61 Bogota(COLUMN)cloudy(COLUMN)57(COLUMN)46 Calgary(COLUMN)cloudy(COLUMN)48(COLUMN)36 Culiacan(COLUMN)fair(COLUMN)93(COLUMN)58 Edmonton(COLUMN)cloudy(COLUMN)54(COLUMN)36 Havana(COLUMN)cloudy(COLUMN)91(COLUMN)73 Kingston(COLUMN)fair(COLUMN)88(COLUMN)79 Montego Bay(COLUMN)fair(COLUMN)84(COLUMN)69 Mexico City(COLUMN)fair(COLUMN)84(COLUMN)69 Monterray(COLUMN)cloudy(COLUMN)95(COLUMN)67 Montreal(COLUMN)cloudy(COLUMN)54(COLUMN)39 Nassau(COLUMN)fair(COLUMN)79(COLUMN)70 Ottawa(COLUMN)cloudy(COLUMN)48(COLUMN)37 Regina(COLUMN)clear(COLUMN)43(COLUMN)16 St. Kitts(COLUMN)pt. cldy(COLUMN)86(COLUMN)72 St. Thomas(COLUMN)pt. cldy(COLUMN)85(COLUMN)74 Toronto(COLUMN)rain(COLUMN)50(COLUMN)39 Vancouver(COLUMN)cloudy(COLUMN)55(COLUMN)46 Veracruz(COLUMN)pt. cldy(COLUMN)88(COLUMN)77 Winnipeg(COLUMN)pt. cldy(COLUMN)38(COLUMN)21(END TABLE)