Washington: Today - Sunny, high in the mid 70s, low in the mid 50s. The chance of rain is near zero through tonight. Wind will be from the west at less than 20 mph. Thursday - Sunny, high in the mid 70s.

Maryland and Virginia: Today - Sunny, highs from the 60s to the 70s, lows from the 40s to the low 50s. Thursday - Sunny, highs from the 70s to the low 80s.

Lower Potomac and Chesapeake Bay: Today - Fair with visibility of more than 5 miles. Wind will be from the west at from 8 to 15 knots. Waves in unprotected waters will be near 2 feet.

Extended Area Forecast for Friday through Sunday: Fair on Friday and Saturday, rain possible on Sunday. Highs will be from the low 70s to near 80, lows from the low 50s to near 60. Normal Washington temperatures for the period are a high of 76 and a low of 55.

West Virginia: Today - Partly cloudy, highs from the 60s to the low 70s, lows from the 40s to the low 50s. Thursday - Sunny, highs from the upper 70s to the low mid 80s.

The National Weather Forecast for today - Sunnay skies and mild temperatures will prevail over most sections of the country. Scattered showers or thunderstorms will be contined to Florida, northern New England and western Washington. A few showers may also dot the upper Mississippi Valley. Temperatures in the 70s and 80s will cover the southern two-thirds of the nation, while 60s will prevail across the northern.

Almanac Dara for today: The sun rises 6:01 a.m., sets 8:09 p.m., moon rises 8:42 a.m., sets 11:12 p.m. Tides: high 11 a.m., and 11:29 p.m., low 5:32 a.m., and 5:05 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 1/4), Solomons Island (6 1/4), Point Lookout (7).

The Council of Governments' Air Quality Index for yesterday showed the high reading in the Washinton area during the 2 p.m. to 3 p.m. period was 39 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 qualuty will improve.

The National Weather Service forecasts the Potomac River stage at Little Falls should be near 4.8 feet today. Local Temps., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid.(COLUMN)61(COLUMN)93 1 a.m.(COLUMN)61(COLUMN)93 2 a.m.(COLUMN)61(COLUMN)93 3 a.m.(COLUMN)60(COLUMN)93 4 a.m.(COLUMN)60(COLUMN)93 5 a.m.(COLUMN)60(COLUMN)90 6 a.m.(COLUMN)60(COLUMN)90 7 a.m.(COLUMN)61(COLUMN)87 8 a.m.(COLUMN)62(COLUMN)87 9 a.m.(COLUMN)65(COLUMN)84 10 a.m.(COLUMN)66(COLUMN)84 11 a.m.(COLUMN)70(COLUMN)79 12 noon(COLUMN)74(COLUMN)73 1 p.m.(COLUMN)76(COLUMN)69 2 p.m.(COLUMN)78(COLUMN)65 3 p.m.(COLUMN)81(COLUMN)53 4 p.m.(COLUMN)83(COLUMN)49 5 p.m.(COLUMN)69(COLUMN)66 6 p.m.(COLUMN)71(COLUMN)66 7 p.m.(COLUMN)71(COLUMN)71(END TABLE) Temperatures ending 8 a.m. (EST) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)71(COLUMN)50 Albuquerque(COLUMN)69(COLUMN)38 Amarillo(COLUMN)70(COLUMN)43 Anchorage(COLUMN)54(COLUMN)40 Asheville(COLUMN)60(COLUMN)57 Atlantia(COLUMN)73(COLUMN)62 Atlanta City(COLUMN)54(COLUMN)51 Austin(COLUMN)91(COLUMN)64 Baltimore(COLUMN)59(COLUMN)57 Billings(COLUMN)58(COLUMN)42 Birmingham(COLUMN)71(COLUMN)62 Bismarck(COLUMN)47(COLUMN)33 Boise(COLUMN)69(COLUMN)48 Boston(COLUMN)71(COLUMN)55 Brownsville(COLUMN)92(COLUMN)77 Buffalo(COLUMN)59(COLUMN)54 Burlington(COLUMN)75(COLUMN)51 Casper(COLUMN)47(COLUMN)33 Charleston, S.C.(COLUMN)78(COLUMN)70 Cheston, W.Va.(COLUMN)68(COLUMN)59 Charlotte(COLUMN)60(COLUMN)57 Cheyenne(COLUMN)41(COLUMN)32 Chicago(COLUMN)70(COLUMN)47 Cincinnati(COLUMN)72(COLUMN)52 Cleveland(COLUMN)65(COLUMN)54 Columbia, S.C.(COLUMN)76(COLUMN)68 Columbus, Ohio(COLUMN)66(COLUMN)55 Dat.-Ft. Worth(COLUMN)87(COLUMN)54 Dayton(COLUMN)74(COLUMN)53 Denver(COLUMN)53(COLUMN)34 Des Moines(COLUMN)61(COLUMN)47 Detroit(COLUMN)63(COLUMN)48 Duluth(COLUMN)49(COLUMN)41 El Paso(COLUMN)79(COLUMN)49 Fairbanks(COLUMN)61(COLUMN)42 Fargo(COLUMN)47(COLUMN)43 Flagstaff(COLUMN)65(COLUMN)27 Great Falls(COLUMN)64(COLUMN)45 Hartford(COLUMN)71(COLUMN)50 Helena(COLUMN)67(COLUMN)38 Honolulu(COLUMN)67(COLUMN)38 Houston(COLUMN)89(COLUMN)70 Indianapolis(COLUMN)78(COLUMN)52 Jackson, Miss.(COLUMN)75(COLUMN)62 Jacksonville(COLUMN)86(COLUMN)70 Juneau(COLUMN)45(COLUMN)38 Kansas City(COLUMN)64(COLUMN)47 Las Vegas(COLUMN)85(COLUMN)58 Little Rock(COLUMN)85(COLUMN)55 Los Angeles(COLUMN)87(COLUMN)64 Louisville(COLUMN)78(COLUMN)56 Memphis(COLUMN)82(COLUMN)58 Miami Beach(COLUMN)83(COLUMN)78 Midland-Odessa(COLUMN)88(COLUMN)52 Milwaukee(COLUMN)69(COLUMN)48 Mpls-St. Paul(COLUMN)57(COLUMN)46 Nashville(COLUMN)76(COLUMN)61 New Orleans(COLUMN)82(COLUMN)76 New York(COLUMN)60(COLUMN)53 Norfolk(COLUMN)66(COLUMN)64 North Platte(COLUMN)58(COLUMN)37 Oklahoma City(COLUMN)76(COLUMN)52 Omaha(COLUMN)58(COLUMN)43 Orlando(COLUMN)93(COLUMN)72 Philadelphia(COLUMN)59(COLUMN)53 Phoenix(COLUMN)90(COLUMN)61 Pitsburgh(COLUMN)61(COLUMN)55 Portland, Me.(COLUMN)65(COLUMN)44 Portland, Ore.(COLUMN)74(COLUMN)53 Providence(COLUMN)65(COLUMN)51 Raleigh(COLUMN)70(COLUMN)64 Rapid City(COLUMN)52(COLUMN)36 Reno(COLUMN)75(COLUMN)39 Richmond(COLUMN)67(COLUMN)60 St. Louis(COLUMN)76(COLUMN)52 St. Pbg.-Tampa(COLUMN)88(COLUMN)73 Salt Lake City(COLUMN)61(COLUMN)38 San Antonio(COLUMN)91(COLUMN)61 San Diego(COLUMN)79(COLUMN)61 San Francisco(COLUMN)76(COLUMN)49 San Juan(COLUMN)73(COLUMN)88 St. Ste. Marie(COLUMN)50(COLUMN)43 Seattle(COLUMN)67(COLUMN)51 Shreveport(COLUMN)90(COLUMN)59 Sioux Falls(COLUMN)50(COLUMN)42 Spokane(COLUMN)71(COLUMN)53 Syracuse(COLUMN)70(COLUMN)51 Topeka(COLUMN)67(COLUMN)49 Tucson(COLUMN)80(COLUMN)55 Tulsa(COLUMN)77(COLUMN)50 Washington(COLUMN)61(COLUMN)59 Wichita(COLUMN)73(COLUMN)48(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp Aberdeen(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)59 Amsterdam(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)63 Ankara(COLUMN)pt. cldy(COLUMN) 3 p.m.(COLUMN)73 Athens(COLUMN)clear(COLUMN) 2 p.m.(COLUMN)68 Auckland(COLUMN)clear(COLUMN)m-night(COLUMN)54 Berlin(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)61 Birmingham(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)59 Brussels(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)63 Cairo(COLUMN)pt.cldy(COLUMN) 2 p.m.(COLUMN)95 Casablanca(COLUMN)cloudy(COLUMN)noon(COLUMN)66 Copenhagen(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)Dublin clear(COLUMN) 1 p.m.(COLUMN)57 Geneva(COLUMN)pt.cldy(COLUMN) 1p.m.(COLUMN)61 Hong Kong(COLUMN)clear(COLUMN) 8 p.m.(COLUMN)81 Jerusalem(COLUMN)clear(COLUMN) 2 p.m.(COLUMN)79 Lisbon(COLUMN)pt.cldy(COLUMN)noon(COLUMN)59 London(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)63 Madrid(COLUMN)pt.cldy(COLUMN) 1 p.m.(COLUMN)61 Malta(COLUMN)pt.cldy(COLUMN) 1 p.m.(COLUMN)68 Manila(COLUMN)pt.cldy(COLUMN) 1 p.m.(COLUMN)68 Moscow(COLUMN)cloudy(COLUMN) 3 p.m.(COLUMN)63 New Delhi(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)106 Nice(COLUMN)pt.cldy(COLUMN) 1 p.m.(COLUMN) 63 Oslo(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN) 54 Paris(COLUMN)pt.cldy(COLUMN) 1 p.m.(COLUMN) 61 Peking(COLUMN)clear(COLUMN) 8 p.m.(COLUMN) 64 Rome(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN) 63 Saigon(COLUMN)cloudy(COLUMN) 8 p.m.(COLUMN) 84 Sofia(COLUMN)pt. cldy(COLUMN) 2 p.m.(COLUMN) 57 Stockholm(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN) 41 Sydney(COLUMN)cloudy(COLUMN)10 p.m.(COLUMN) 70 Tokyo(COLUMN)rain(COLUMN) 9 p.m.(COLUMN) 66 Vienna(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN) 54 Warsaw(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN) 59(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)clear(COLUMN)84(COLUMN)73 Barbados(COLUMN)fair(COLUMN)78(COLUMN)73 Bermuda(COLUMN)fair(COLUMN)69(COLUMN)63 Bogota(COLUMN)pt. cldy(COLUMN)61(COLUMN)50 Calgary(COLUMN)pt. cldy(COLUMN)68(COLUMN)43 Culiacan(COLUMN)clear(COLUMN)89(COLUMN)59 Edmonton(COLUMN)cloudy(COLUMN)68(COLUMN)39 Havana(COLUMN)fair(COLUMN)93(COLUMN)77 Kingston(COLUMN)fair(COLUMN)89(COLUMN)77 Montego Bay(COLUMN)clear(COLUMN)88(COLUMN)73 Mexico City(COLUMN)fair(COLUMN)84(COLUMN)59 Monterrey(COLUMN)fair(COLUMN)91(COLUMN)73 Montreal(COLUMN)cloudy(COLUMN)75(COLUMN)50 Nassau(COLUMN)pt. cldy(COLUMN)86(COLUMN)77 Ottawa(COLUMN)cloudy(COLUMN)72(COLUMN)50 Regina(COLUMN)clear(COLUMN)61(COLUMN)34 St. Kitts(COLUMN)fair(COLUMN)82(COLUMN)75 St. Thomas(COLUMN)pt. cldy(COLUMN)80(COLUMN)78 Toronto(COLUMN)cloudy(COLUMN)55(COLUMN)48 Vancouver(COLUMN)rain(COLUMN)63(COLUMN)52 Veracruz(COLUMN)fog(COLUMN)91(COLUMN)75 Winnipeg(COLUMN)clear(COLUMN)50(COLUMN)43(END TABLE)