Washington: Today - Partly cloudy, high in the low 70s, low near 50. The chance of rain is 20 per cent today and near zero tonight. Saturday - Partly sunny, high in the 60s.

Maryland and Virginia: Today - Partly cloudy, highs from the low 60s to near 70, lows from the upper 30s to the low 50s. Saturday - Partly sunny, highs in the 60s.

Lower Potomac and Chesapeake Bay: Today - Partly cloudy with visibility of from 3 to 5 miles today, more than 5 miles tonight. Wind will be from the north at from 12 to 15 knots today, but diminishing tonight. Waves in unprotected waters will be less than 2 feet.

Extended Area Forecast for Sunday through Tuesday: Fair through the period. Highs will be from the upper 60s to the low 70s, lows from the upper 40s to the mid 50s. Normal Washington temperatures for the period area high of 64 and a low of 11.

West Virginia: Today - Sunny, highs from the mid 60s to the low 70s, lows in the 40s. Saturday - Partly cloudy, highs from the mid to upper 60s.

The National Weather Forecast for today - Rain will extend over the northern pacific coast into central California. Showers will scatter along coast of North Carolina and over northern Maine.Temperatures will be cool from inland gortions of the Gulf coast through the Ohio Valley into New England, the Great Lakes and the upper Mississippi Valley. It will also be cool from the northern two-mirds of the Pacific coast through the Great Basin and into the northern Rockies. Elsewhere, temperatures will be seasonally mild.

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 23 for the pollutant, cargon monoxide. 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 45 feet today. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 midnit(COLUMN)67(COLUMN)84 1 a.m.(COLUMN)67(COLUMN)84 2 a.m.(COLUMN)67(COLUMN)84 3 a.m.(COLUMN)66(COLUMN)84 4 a.m.(COLUMN)66(COLUMN)84 5 a.m.(COLUMN)67(COLUMN)84 6 a.m.(COLUMN)67(COLUMN)84 7 a.m.(COLUMN)66(COLUMN)84 8 a.m.(COLUMN)66(COLUMN)84 9 a.m.(COLUMN)66(COLUMN)84 10 a.m.(COLUMN)66(COLUMN)84 11 a.m.(COLUMN)66(COLUMN)81 12 noon(COLUMN)66(COLUMN)81 1 p.m.(COLUMN)66(COLUMN)81 2 p.m.(COLUMN)67(COLUMN)81 3 p.m.(COLUMN)67(COLUMN)81 4 p.m.(COLUMN)68(COLUMN)81 5 p.m.(COLUMN)68(COLUMN)81 6 p.m.(COLUMN)68(COLUMN)81 7 p.m.(COLUMN)68(COLUMN)81(END TABLE) Temperatures ending 8 a.m. (EDT) Yesterday(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)65(COLUMN)50 Albuquerave(COLUMN)75(COLUMN)42 Amarillo(COLUMN)84(COLUMN)50 Anchorage(COLUMN)42(COLUMN)38 Asheville(COLUMN)68(COLUMN)56 Atlanta(COLUMN)70(COLUMN)53 Atlantic City(COLUMN)63(COLUMN)59 Austin(COLUMN)85(COLUMN)63 Baltimore(COLUMN)65(COLUMN)65 Bilings(COLUMN)62(COLUMN)40 Birmingham(COLUMN)67(COLUMN)56 Bismarck(COLUMN)63(COLUMN)34 Boise(COLUMN)59(COLUMN)37 Boston(COLUMN)64(COLUMN)60 Broansville(COLUMN)86(COLUMN)67 Buffalo(COLUMN)70(COLUMN)46 Burlington(COLUMN)70(COLUMN)48 Casder(COLUMN)79(COLUMN)29 Ccharleston, S C.(COLUMN)61(COLUMN)62 Charleston, WVa(COLUMN)64(COLUMN)59 Charlotte(COLUMN)74(COLUMN)64 Chevenne(COLUMN)74(COLUMN)64 Chicago(COLUMN)60(COLUMN)42 Cincinnati(COLUMN)63(COLUMN)57 Cleveland(COLUMN)72(COLUMN)29 Columbia, S.C.(COLUMN)72(COLUMN)60 Columbus(COLUMN)68(COLUMN)53 Dal. Ft. Worth(COLUMN)86(COLUMN)53 Dayton(COLUMN)64(COLUMN)50 Denver(COLUMN)83(COLUMN)41 Des Moires(COLUMN)70(COLUMN)51 Detroit(COLUMN)66(COLUMN)42 Duluth(COLUMN)61(COLUMN)43 El Paso(COLUMN)82(COLUMN)51 Fairbanks(COLUMN)33(COLUMN)22 Fargo(COLUMN)68(COLUMN)47 Flagstaff(COLUMN)70(COLUMN)33 Great Falls(COLUMN)54(COLUMN)27 Hartfort(COLUMN)58(COLUMN)54 Helena(COLUMN)58(COLUMN)26 Honolulu(COLUMN)83(COLUMN)77 Houston(COLUMN)85(COLUMN)67 Indianapolis(COLUMN)64(COLUMN)43 Jackson, Miss.(COLUMN)74(COLUMN)44 Jacksonville(COLUMN)84(COLUMN)55 Juneau(COLUMN)44(COLUMN)42 Kansas City(COLUMN)73(COLUMN)58 Las Vegas(COLUMN)86(COLUMN)56 Little Rock(COLUMN)74(COLUMN)51 Los Angeles(COLUMN)77(COLUMN)62 Louisville(COLUMN)64(COLUMN)57 Memphis(COLUMN)66(COLUMN)46 Miami Beach(COLUMN)85(COLUMN)72 Midland-Odessa(COLUMN)83(COLUMN)57 Milwaukee(COLUMN)55(COLUMN)42 Mpts.-St. Paul(COLUMN)64(COLUMN)46 Nashville(COLUMN)66(COLUMN)55 New Orleans(COLUMN)79(COLUMN)55 New York(COLUMN)57(COLUMN)57 Norfolk(COLUMN)70(COLUMN)66 North Platte(COLUMN)85(COLUMN)36 Oklahoma City(COLUMN)88(COLUMN)55 Omaha(COLUMN)72(COLUMN)53 Orlando(COLUMN)82(COLUMN)62 Philadelphia(COLUMN)62(COLUMN)59 Phoenix(COLUMN)94(COLUMN)65 Pittsburgh(COLUMN)69(COLUMN)52 Portland, Maine(COLUMN)66(COLUMN)46 Portland, Ore.(COLUMN)57(COLUMN)37 Providence(COLUMN)64(COLUMN)53 Raleigh(COLUMN)74(COLUMN)61 Rapid City(COLUMN)64(COLUMN)41 Reno(COLUMN)73(COLUMN)43 Richmond(COLUMN)71(COLUMN)66 St. Louis(COLUMN)69(COLUMN)44 St. Prbq.-Tam.(COLUMN)82(COLUMN)62 Salt Lake City(COLUMN)80(COLUMN)50 San Antonio(COLUMN)82(COLUMN)60 San Diego(COLUMN)74(COLUMN)65 San Francisco(COLUMN)61(COLUMN)54 San Juan(COLUMN)88(COLUMN)77 St. Ste. Marie(COLUMN)61(COLUMN)36 Seattle(COLUMN)57(COLUMN)41 Shreveport(COLUMN)84(COLUMN)45 Sioux Falls(COLUMN)67(COLUMN)43 Spokane(COLUMN)52(COLUMN)29 Syracuse(COLUMN)74(COLUMN)53 Topeka(COLUMN)79(COLUMN)53 Tucson(COLUMN)87(COLUMN)67 Tulsa(COLUMN)80(COLUMN)65 Washington(COLUMN)70(COLUMN)66 Wichita(COLUMN)84(COLUMN)52(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)55 Armsterdam(COLUMN)rain(COLUMN)1 p.m.(COLUMN)52 Ankara(COLUMN)pt. cldy.(COLUMN)3 p.m.(COLUMN)54 Athens(COLUMN)clear(COLUMN)2 p.m.(COLUMN)72 Auckland(COLUMN)pt. cldy.(COLUMN)midnight(COLUMN)64 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)48 Birmingham(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)57 Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55 Casablanca(COLUMN)clear(COLUMN)noon(COLUMN)68 Copenhagen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Dublin(COLUMN)clear(COLUMN)1 p.m.(COLUMN)54 Geneva(COLUMN)rain(COLUMN)1 p.m.(COLUMN)55 Hong Kong(COLUMN)pt. cldy.(COLUMN)8 p.m.(COLUMN)77 Lisbon(COLUMN)clear(COLUMN)noon(COLUMN)68 London(COLUMN)clear(COLUMN)1 p.m.(COLUMN)57 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)63 Malta(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)70 Manila(COLUMN)pt. cldy.(COLUMN)8 p.m.(COLUMN)82 Moscow(COLUMN)rain(COLUMN)3 p.m.(COLUMN)45 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)86 Nice(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)68 Oslo(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)46 Paris(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55 Peking(COLUMN)rain(COLUMN)8 p.m.(COLUMN)66 Rome(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)68 Saigon(COLUMN)pt. cldy.(COLUMN)8 p.m.(COLUMN)79 Sofia(COLUMN)clear(COLUMN)2 p.m.(COLUMN)63 Stockholm(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)63 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)73 Tel Aviv(COLUMN)clear(COLUMN)2 p.m.(COLUMN)77 Tokyo(COLUMN)clear(COLUMN)9 p.m.(COLUMN)66 Tunis(COLUMN)clear(COLUMN)1 p.m.(COLUMN)79 Vienna(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)50 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acaculco(COLUMN)cloudy(COLUMN)91(COLUMN)77 Barbados(COLUMN)cloudy(COLUMN)85(COLUMN)73 Bermoda(COLUMN)haze(COLUMN)79(COLUMN)77 Bogota(COLUMN)pt. cldy(COLUMN)58(COLUMN)50 Calgery(COLUMN)pt. cldy(COLUMN)54(COLUMN)30 Cullacan(COLUMN)cloudy(COLUMN)91(COLUMN)72 Edmonton(COLUMN)cloudy(COLUMN)57(COLUMN)27 Havana(COLUMN)pt. cldy(COLUMN)82(COLUMN)75 Kingston(COLUMN)pt. cldy(COLUMN)90(COLUMN)77 Montego Bay(COLUMN)pt. cldy(COLUMN)90(COLUMN)73 Mexico City(COLUMN)haze(COLUMN)70(COLUMN)57 Monterrey(COLUMN)cloudy(COLUMN)77(COLUMN)66 Montreal(COLUMN)clear(COLUMN)68(COLUMN)45 Nassau(COLUMN)pt. cldy(COLUMN)82(COLUMN)72 Ottawa(COLUMN)clear(COLUMN)66(COLUMN)43 Regina(COLUMN)clear(COLUMN)57(COLUMN)25 St. Kitts(COLUMN)cloudy(COLUMN)88(COLUMN)76 St. Thomas(COLUMN)clear(COLUMN)65(COLUMN)39 Vancouver(COLUMN)cloudy(COLUMN)55(COLUMN)45 Veracruz(COLUMN)clear(COLUMN)85(COLUMN)72 Winnipeg(COLUMN)clear(COLUMN)63(COLUMN)26(END TABLE)