Washington: Today - Fair, high 80 to 85, low 60 to 68. Chance of rain is 30 percent today and 10 percent tonight. Winds will be northeasterly at 10 mph. Saturday - partly sunny, high in mid 80s.

Lower Potomac and Chesapeake Bay: Today - Fair in haze, visibility more than five miles except in rain. Winds will be northerly at 12 knots. Waves in unprotected waters will be 2 feet.

Atlantic Ocean Beaches from New Jersey in North Carolina: Today - Partly cloudly warm and humid with a chance of thunderstorms. Highs will be from the mid 70s to the low 80s. Saturday - Variable cloudiness, high near .80. Water temperatures will be in the mid 70s in the north and upper 70s in the south.

Extended Area Outlook for Sunday through Tuesday: Partly cloudy with a chance of showers near the end of the period. Seasonable temperatures will be prevail with highs in the 80s and lows in the 60s to low 70s. Normal Washington temperatures for the period will be a high of 83 and a low of 64.

West Virginia: Today - Partly cloudly with a chance of thunderstorms in the eastern panhandle Highs will be in the upper 70s and lows from the 50s to around 60. Saturday - Partly cloudy and warm with highs in the mid 80s.

The National Weather Forecast for today - Showers will be scattered along the middle and south Atlantic Coast, and some thundershowers are expected alone the Gulf Coast. A few showers are also forecast for Minnesota, and from western Washington into northwestern Montana. Clear or partly cloudy skies are expected elsewhere. Temperatures will be a few degrees warmer from the Great Lakes to the central Plains, and a little cooler in eastern Montana. Otherwise no large changes in temperature are expected. It will be mild in the northeastern and northwestern U.S. warm weather will prevail in Plains and across the south.

Almanac Data for today: The sun rises 6:37 a.m., sets 7:39 p.m.; moon rrises 5:36 a.m., sets 7:03 p.m.

Tides: High 8:04 a.m., and 8:30 p.m., low 2:25 a.m. and 2:54 p.m. High and low tides at the following locations may be obtained by subtracting the hours indicated from the hours above: Annapolis (3 1/2), 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).

The Council of Governments' Air Quality Index for yesterday showed the high reading in the Washington area during the 2 to 3 p.m. period was 38 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 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 rise to 3.7 feet today. Local Temps. Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 midnite(COLUMN)75(COLUMN)90 1 a.m.(COLUMN)75(COLUMN)90 2 a.m.(COLUMN)75(COLUMN)90 3 a.m.(COLUMN)75(COLUMN)90 4 a.m.(COLUMN)75(COLUMN)90 5 a.m.(COLUMN)74(COLUMN)94 6 a.m.(COLUMN)75(COLUMN)90 7 a.m.(COLUMN)75(COLUMN)90 7 a.m.(COLUMN)76(COLUMN)88 8 a.m.(COLUMN)77(COLUMN)85 9 a.m.(COLUMN)77(COLUMN)85 10 a.m.(COLUMN)77(COLUMN)85 11 a.m.(COLUMN)81(COLUMN)74 12 noon(COLUMN)81(COLUMN)47 1 p.m.(COLUMN)83(COLUMN)70 2 p.m.(COLUMN)83(COLUMN)70 3 p.m.(COLUMN)85(COLUMN)65 4 p.m.(COLUMN)84(COLUMN)68 5 p.m.(COLUMN)82(COLUMN)72 6 p.m.(COLUMN)79(COLUMN)79 7 p.m.(COLUMN)79(COLUMN)79(END TABLE) Temperatures ending 8 a.m. (EDT) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)80(COLUMN)60 Albuquerque(COLUMN)86(COLUMN)58 Amarillo(COLUMN)77(COLUMN)57 Anchorage(COLUMN)61(COLUMN)49 Asheville(COLUMN)84(COLUMN)67 Atlanta(COLUMN)91(COLUMN)71 Atlantic City(COLUMN)81(COLUMN)69 Austin(COLUMN)89(COLUMN)73 Baltimore(COLUMN)85(COLUMN)72 Billings(COLUMN)83(COLUMN)58 Birmingham(COLUMN)87(COLUMN)67 Bismarck(COLUMN)80(COLUMN)54 Boise(COLUMN)89(COLUMN)58 Boston(COLUMN)79(COLUMN)67 Brownsville(COLUMN)90(COLUMN)77 Buffalo(COLUMN)76(COLUMN)61 Burlington(COLUMN)76(COLUMN)59 Casper(COLUMN)83(COLUMN)50 Charleston, S.C.(COLUMN)83(COLUMN)50 Charleston, W.Va.(COLUMN)82(COLUMN)70 Charlotte(COLUMN)90(COLUMN)72 Cheyenne(COLUMN)74(COLUMN)49 Chicago(COLUMN)77(COLUMN)62 Cincinnati(COLUMN)70(COLUMN)62 Cleveland(COLUMN)71(COLUMN)60 Columbia, S.C.(COLUMN)93(COLUMN)72 Columbus(COLUMN)70(COLUMN)61 Dal.-Ft. Worth(COLUMN)91(COLUMN)66 Dayton(COLUMN)66(COLUMN)57 Denver(COLUMN)84(COLUMN)52 Des Moines(COLUMN)82(COLUMN)58 Detroit(COLUMN)75(COLUMN)59 Duluth(COLUMN)64(COLUMN)39 El Paso(COLUMN)85(COLUMN)64 Fairbanks(COLUMN)70(COLUMN)49 Fargo(COLUMN)75(COLUMN)57 Flagstaff(COLUMN)82(COLUMN)45 Great Falls(COLUMN)82(COLUMN)58 Helena(COLUMN)82(COLUMN)52 Honolulu(COLUMN)90(COLUMN)77 Houston(COLUMN)87(COLUMN)74 Indianapolis(COLUMN)70(COLUMN)58 Jackson, Miss(COLUMN)84(COLUMN)64 Jacksonville(COLUMN)91(COLUMN)71 Juneau(COLUMN)59(COLUMN)51 Kansas City(COLUMN)81(COLUMN)59 Las Vegas(COLUMN)104(COLUMN)78 Little Rock(COLUMN)80(COLUMN)63 Los Angeles(COLUMN)82(COLUMN)66 Louisville(COLUMN)77(COLUMN)65 Memphis(COLUMN)75(COLUMN)69 Midland-Odessa(COLUMN)81(COLUMN)63 Milwaukee(COLUMN)73(COLUMN)59 Mpls.-St. Paul(COLUMN)76(COLUMN)58 Nashville(COLUMN)87(COLUMN)71 New Orleans(COLUMN)87(COLUMN)75 Norfolk(COLUMN)91(COLUMN)73 North Platte(COLUMN)83(COLUMN)52 Oklahoma City(COLUMN)86(COLUMN)42 Omaha(COLUMN)81(COLUMN)59 Orlando(COLUMN)92(COLUMN)74 Philadelphia(COLUMN)85(COLUMN)73 Phoenix(COLUMN)107(COLUMN)81 Pittsburgh(COLUMN)71(COLUMN)61 Portland, Me.(COLUMN)83(COLUMN)63 Portland, Ore(COLUMN)75(COLUMN)63 Providence(COLUMN)78(COLUMN)65 Raleigh(COLUMN)92(COLUMN)73 Rapid City(COLUMN)81(COLUMN)56 Reno(COLUMN)88(COLUMN)44 Richmond(COLUMN)91(COLUMN)73 St. Louis(COLUMN)80(COLUMN)60 St. Prbg.-Tampa(COLUMN)92(COLUMN)75 Salt Lake City(COLUMN)93(COLUMN)69 San Antonio(COLUMN)88(COLUMN)72 San Diego(COLUMN)77(COLUMN)70 San Francisco(COLUMN)65(COLUMN)56 San Juan(COLUMN)92(COLUMN)77 St. Ste. Marie(COLUMN)62(COLUMN)37 Seattle(COLUMN)74(COLUMN)62 Shreveport(COLUMN)88(COLUMN)66 Sioux Falls(COLUMN)82(COLUMN)60 Spokane(COLUMN)72(COLUMN)56 Syracuse(COLUMN)79(COLUMN)63 Topeka(COLUMN)81(COLUMN)50 Tucson(COLUMN)98(COLUMN)77 Tulsa(COLUMN)87(COLUMN)60 Washington(COLUMN)90(COLUMN)74 Wichita(COLUMN)84(COLUMN)59(END TABLE) Temperature Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)57 Amsterdam(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)57 Ankara(COLUMN)clear(COLUMN)1 p.m.(COLUMN)57 Athens(COLUMN)clear(COLUMN)2 p.m.(COLUMN)81 Auckland(COLUMN)clear(COLUMN)12 a.m.(COLUMN)52 Berlin(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)59 Birmingham(COLUMN)rain(COLUMN)1 p.m.(COLUMN)54 Bonn(COLUMN)clear(COLUMN)1 p.m.(COLUMN)55 Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55 Casablanca(COLUMN)pt. cldy.(COLUMN)12 p.m.(COLUMN)77 Copenhagen(COLUMN)clear(COLUMN)1 p.m.(COLUMN)59 Dublin(COLUMN)rain(COLUMN)1 p.m.(COLUMN)57 Geneva(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)57 Hong Kong(COLUMN)clear(COLUMN)8 p.m.(COLUMN)82 Jerusalem(COLUMN)clear(COLUMN)2 p.m.(COLUMN)84 Lisbon(COLUMN)clear(COLUMN)12 p.m.(COLUMN)81 London(COLUMN)rain(COLUMN)1 p.m.(COLUMN)55 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)90 Malta(COLUMN)clear(COLUMN)1 p.m.(COLUMN)86 Manila(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)77 Moscow(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)64 New Delhi(COLUMN)rain(COLUMN)5 p.m.(COLUMN)81 Nice(COLUMN)clear(COLUMN)1 p.m.(COLUMN)77 Oslo(COLUMN)rain(COLUMN)1 p.m.(COLUMN)57 Paris(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)59 Peking(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)61 Rome(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)77 Sofia(COLUMN)pt. cldy.(COLUMN)2 p.m.(COLUMN)75 Stockholm(COLUMN)rain(COLUMN)1 p.m.(COLUMN)55 Sydney(COLUMN)cloudy(COLUMN)10 p.m.(COLUMN)59 Tokyo(COLUMN)rain(COLUMN)9 p.m.(COLUMN)77 Tunis(COLUMN)clear(COLUMN)1 p.m.(COLUMN)95 Vienna(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)59 Warsaw(COLUMN)rain(COLUMN)1 p.m.(COLUMN)52(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)fair(COLUMN)90(COLUMN)78 Barbados(COLUMN)fair(COLUMN)86(COLUMN)79 Bermuda(COLUMN)fair(COLUMN)85(COLUMN)80 Bogota(COLUMN)pt. cldy.(COLUMN)66(COLUMN)46 Calgary(COLUMN)pt. cldy.(COLUMN)73(COLUMN)50 Culiacan(COLUMN)fair(COLUMN)95(COLUMN)73 Edmonton(COLUMN)pt. cldy.(COLUMN)77(COLUMN)46 Havana(COLUMN)fair(COLUMN)88(COLUMN)73 Kingston(COLUMN)cloudy(COLUMN)90(COLUMN)78 Montego Bay(COLUMN)cloudy(COLUMN)90(COLUMN)78 Mexico City(COLUMN)haze(COLUMN)75(COLUMN)54 Monterrey(COLUMN)pt. cldy.(COLUMN)84(COLUMN)70 Montreal(COLUMN)cloudy(COLUMN)77(COLUMN)57 Nassau(COLUMN)fair(COLUMN)91(COLUMN)72 Ottawa(COLUMN)pt. cldy.(COLUMN)77(COLUMN)54 Regina(COLUMN)pt. cldy.(COLUMN)77(COLUMN)50 St. Kitts(COLUMN)fair(COLUMN)89(COLUMN)77 Toronto(COLUMN)cloudy(COLUMN)79(COLUMN)52 Vancouver(COLUMN)rain(COLUMN)72(COLUMN)59 Winnipeg(COLUMN)clear(COLUMN)70(COLUMN)50(END TABLE)