Washington: Today - Sunny, high in the mid 70s, low in the 50s. The chance of rain is near zero through tonight. Wednesday - Sunday, high near 80. Winds will be light and variable.

Maryland and Virginia: Today and Wednesday - Sunday, highs in the 70s to near 80, lows in the 40s and 50s.

Lower Potomac and Chesapeake Bay - Fair with visibility of 5 mies of more. Winds will be northerly at 10 knots or less. Waves will average 1 foot or less.

West Virginia: Today - Sunny, highs from the upper 60s to mid 70s, lows from the 40s to low 50s. Wednesday - Sunny, high in the 70s.

EXTENDED Area Forecast for Thursday through Saturday - Variable cloudiness through the period with a chance of showers each day. Highs will average from the 70s to low 60s, lows in the 50s.

The National Weather Forecast for today - Rainshowers and thunderstorms will cover Florida and reach across portions of New Mexico and western Texas into Okalahoma. Widely scattered rainshowers will also occur in northern Minnesota, southeastern Louisiana and extreme southern Texas. Partly cloudly skies are forecast for the southern Rockies, the central and southern Plains, the lower Missouri Valley, the Gulf and south Atlantic Coasts, as well as portions of northern California and from Montana across North Dakota into the Great Lakes region. Sunny skies will favor most of the rest of the nation with warm temperatures. Unseasonably high temperatures will continue in southern California, while seasonably cool readings will predominate in New Mexico, western Texas, portions of the Ohio Valley and much of the north and middle Atlantic Coast.

Almanac Data for today: The sun rises 6:59 a.m., sets 6:59 p.m.; moon rises 1:38 a.m., sets 3:51 p.m. Tides: high 4:03 a.m. and 4:39 p.m., low 11:09 a.m. and 11:25 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: 13 for Ragweed (a reading of more than 7 is considered to be undesirable).

The Council of Government's Air Quality Index for yesterday showed the high reading in the Washington area during the 3 p.m. period was 50 for the pollutant, photochemical oxidants. Index values between 50 and 99 indicate unhealthy 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 improve.

The National Weather Service forecasts the Potomac River stage at Little Falls should remain near 3.0 feet today. Local Temps., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid.(COLUMN)64(COLUMN)73 1 a.m.(COLUMN)65(COLUMN)70 2 a.m.(COLUMN)64(COLUMN)73 3 a.m.(COLUMN)62(COLUMN)78 4 a.m.(COLUMN)61(COLUMN)75 5 a.m.(COLUMN)61(COLUMN)79 6 a.m.(COLUMN)60(COLUMN)81 7 a.m.(COLUMN)60(COLUMN)81 8 a.m.(COLUMN)62(COLUMN)75 9 a.m.(COLUMN)64(COLUMN)70 10 a.m.(COLUMN)68(COLUMN)61 11 a.m.(COLUMN)72(COLUMN)53 12 noon(COLUMN)74(COLUMN)58 1 p.m.(COLUMN)77(COLUMN)45 2 p.m.(COLUMN)78(COLUMN)42 3 p.m.(COLUMN)79(COLUMN)36 4 p.m.(COLUMN)79(COLUMN)36 5 p.m.(COLUMN)80(COLUMN)37 6 p.m.(COLUMN)78(COLUMN)35 7 p.m.(COLUMN)74(COLUMN)40(END TABLE) Temperatures ending 8 a.m. (EDT) yesterday(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)70(COLUMN)44 Albuquerque(COLUMN)67(COLUMN)57 Amarillo(COLUMN)70(COLUMN)62 Anchorage(COLUMN)55(COLUMN)48 Asheville(COLUMN)67(COLUMN)60 Atlanta(COLUMN)69(COLUMN)64 Atlantic City(COLUMN)63(COLUMN)56 Austin(COLUMN)89(COLUMN)65 Baltimore(COLUMN)73(COLUMN)54 Billings(COLUMN)73(COLUMN)51 Birmingham(COLUMN)80(COLUMN)67 Bismarck(COLUMN)69(COLUMN)48 Boise(COLUMN)88(COLUMN)54 Boston(COLUMN)69(COLUMN)53 Brownsville(COLUMN)90(COLUMN)75 Buffalo(COLUMN)69(COLUMN)51 Burlington, Vt.(COLUMN)69(COLUMN)47 Casper(COLUMN)83(COLUMN)43 Charleston, S.C.(COLUMN)80(COLUMN)69 Charleston, W.V.(COLUMN)67(COLUMN)61 Charlotte(COLUMN)71(COLUMN)65 Cheyenne(COLUMN)75(COLUMN)44 Chicago(COLUMN)80(COLUMN)58 Cincinnati(COLUMN)78(COLUMN)51 Cleveland(COLUMN)73(COLUMN)53 Columbia, S.C.(COLUMN)80(COLUMN)65 Columbus, Oh.(COLUMN)78(COLUMN)50 Dal.-Ft. Worth(COLUMN)87(COLUMN)65 Dayton(COLUMN)76(COLUMN)53 Denver(COLUMN)72(COLUMN)55 Des Moines(COLUMN)82(COLUMN)50 Detroit(COLUMN)76(COLUMN)49 Duluth(COLUMN)47(COLUMN)32 El Paso(COLUMN)67(COLUMN)59 Evansville(COLUMN)79(COLUMN)57 Fairbanks(COLUMN)41(COLUMN)37 Fargo(COLUMN)68(COLUMN)48 Flagstaff(COLUMN)73(COLUMN)45 Great Falls(COLUMN)78(COLUMN)54 Hartford(COLUMN)71(COLUMN)42 Helena(COLUMN)78(COLUMN)43 Honolulu(COLUMN)87(COLUMN)73 Houston(COLUMN)84(COLUMN)64 Indianapolis(COLUMN)79(COLUMN)49 Jackson(COLUMN)87(COLUMN)59 Jacksonville(COLUMN)80(COLUMN)70 Juneau(COLUMN)54(COLUMN)43 Kansas City(COLUMN)82(COLUMN)59 Las Vegas(COLUMN)97(COLUMN)73 Little Rock(COLUMN)78(COLUMN)61 Los Angeles(COLUMN)106(COLUMN)76 Louisville(COLUMN)80(COLUMN)56 Memphis(COLUMN)82(COLUMN)62 Miami Beach(COLUMN)56(COLUMN)76 Midland(COLUMN)71(COLUMN)62 Milwaukee(COLUMN)76(COLUMN)55 Mpls.-St. Paul(COLUMN)76(COLUMN)43 Nashville(COLUMN)82(COLUMN)55 New Orleans(COLUMN)89(COLUMN)76 New York(COLUMN)70(COLUMN)55 Norfolk(COLUMN)73(COLUMN)58 North Platte(COLUMN)82(COLUMN)46 Oklahoma City(COLUMN)88(COLUMN)69 Omaha(COLUMN)81(COLUMN)53 Orlando(COLUMN)90(COLUMN)72 Philadelphia(COLUMN)70(COLUMN)55 Phoenix(COLUMN)99(COLUMN)78 Pittsburgh(COLUMN)68(COLUMN)51 Portland, Me.(COLUMN)65(COLUMN)42 Portland, Ore.(COLUMN)78(COLUMN)55 Providence(COLUMN)63(COLUMN)49 Raleigh(COLUMN)77(COLUMN)62 Rapid City(COLUMN)83(COLUMN)55 Reno(COLUMN)88(COLUMN)42 Richmond(COLUMN)71(COLUMN)61 St. Louis(COLUMN)81(COLUMN)60 St. Prbg-Tampa(COLUMN)90(COLUMN)72 Salt Lake City(COLUMN)79(COLUMN)53 San Antonio(COLUMN)87(COLUMN)63 San Diego(COLUMN)99(COLUMN)75 San Francisco(COLUMN)92(COLUMN)67 San Juan(COLUMN)89(COLUMN)76 St. Ste. Marie(COLUMN)68(COLUMN)40 Seattle(COLUMN)64(COLUMN)53 Shreveport(COLUMN)82(COLUMN)62 Sioux Falls(COLUMN)78(COLUMN)45 Spokane(COLUMN)72(COLUMN)50 Syracuse(COLUMN)69(COLUMN)53 Topeka(COLUMN)86(COLUMN)66 Tucson(COLUMN)91(COLUMN)73 Tulsa(COLUMN)90(COLUMN)69 Washington(COLUMN)73(COLUMN)60 Wichita(COLUMN)82(COLUMN)68(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp Aberdeen(COLUMN)clear(COLUMN)1 p.m.(COLUMN)57 Amsterdam(COLUMN)rain(COLUMN)1 p.m.(COLUMN)57 Ankara(COLUMN)clear(COLUMN)3 p.m.(COLUMN)66 Athens(COLUMN)clear(COLUMN)2 p.m.(COLUMN)79 Auckland(COLUMN)clear(COLUMN)midnight(COLUMN)57 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)63 Birmingham(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)59 Bonn(COLUMN)clear(COLUMN)1 p.m.(COLUMN)70 Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)63 Casablanca(COLUMN)clear(COLUMN)noon(COLUMN)79 Copenhagen(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)57 Dublin(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)59 Geneva(COLUMN)clear(COLUMN)1 p.m.(COLUMN)73 Hong Kong(COLUMN)rain(COLUMN)8 p.m.(COLUMN)75 Jerusalem(COLUMN)clear(COLUMN)2 p.m.(COLUMN)77 Lisbon(COLUMN)haze(COLUMN)noon(COLUMN)86 London(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)63 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)77 Malta(COLUMN)clear(COLUMN)1 p.m.(COLUMN)77 Manila(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)81 Moscow(COLUMN)pt. cldy.(COLUMN)3 p.m.(COLUMN)46 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)93 Nice(COLUMN)clear(COLUMN)1 p.m.(COLUMN)73 Oslo(COLUMN)clear(COLUMN)1 p.m.(COLUMN)55 Paris(COLUMN)clear(COLUMN)1 p.m.(COLUMN)72 Peking(COLUMN)clear(COLUMN)8 p.m.(COLUMN)70 Rome(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)77 Saigon(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)82 Sofia(COLUMN)clear(COLUMN)2 p.m.(COLUMN)70 Stockholm(COLUMN)clear(COLUMN)1 p.m.(COLUMN)52 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)59 Tokyo(COLUMN)pt. cldy.(COLUMN)9 p.m.(COLUMN)75 Tunis(COLUMN)clear(COLUMN)1 p.m.(COLUMN)81 Vienna(COLUMN)clear(COLUMN)1 p.m.(COLUMN)75 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)63(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)fair(COLUMN)90(COLUMN)77 Barbados(COLUMN)cloudy(COLUMN)86(COLUMN)74 Bermuda(COLUMN)cloudy(COLUMN)84(COLUMN)74 Bogota(COLUMN)pt. cldy.(COLUMN)63(COLUMN)45 Calgary(COLUMN)pt. cldy.(COLUMN)72(COLUMN)41 Culiacan(COLUMN)cloudy(COLUMN)98(COLUMN)74 Edmonton(COLUMN)rain(COLUMN)61(COLUMN)45 Havana(COLUMN)cloudy(COLUMN)90(COLUMN)74 Kingston(COLUMN)pt. cldy.(COLUMN)90(COLUMN)77 Mexico City(COLUMN)haze(COLUMN)72(COLUMN)58 Monterrey(COLUMN)cloudy(COLUMN)84(COLUMN)72 Montreal(COLUMN)rain(COLUMN)70(COLUMN)48 Nassau(COLUMN)pt. cldy.(COLUMN)91(COLUMN)74 Ottawa(COLUMN)pt. cldy.(COLUMN)70(COLUMN)45 Regina(COLUMN)clear(COLUMN)64(COLUMN)45 St. Kitts(COLUMN)fair(COLUMN)91(COLUMN)74 St. Thomas(COLUMN)pt. cldy.(COLUMN)88(COLUMN)76 Vancouver(COLUMN)clear(COLUMN)64(COLUMN)50 Vera Cruz(COLUMN)pt. cldy.(COLUMN)86(COLUMN)74 Winnipeg(COLUMN)cloudy(COLUMN)61(COLUMN)48(END TABLE)