Washington: Today - Sunny and hazy, high 90 to 95, low 70 to 75. Chance of rain is 10 percent through tonight. Winds will be southwesterly at 15 mph. Thursday - Sunny and hazy, high in mid 90s.

Maryland and Virginia: Today - Sunny and hazy, high in mid 90s, low in mid 70s. Thursday - Sunny and hazy, high in mid 90s.

Lower Potomac and Chesapeake Bay: Today - Fair, visibility more than five miles. Winds will be southwesterly at 18 knots. Waves in unprotected waters will be two feet. Atlantic Ocean Beaches from New Jersey to North Carolina: Today and Thursday will be partly cloudy and very warm. Highs will be in the mid to upper 80s. Water temperatures will be in the low 70s in the north and rear 30 in the south.

Extended Area Outlook for Friday through Sunday: Continued humid and partly cloudy through the period. There will be chance of thunderstorms each day. Highs will average in the mid 80s to low 90s, lows from the low 60s to the mid 70s. Normal Washington temperatures for the period will be a high of 87 and a low of 68.

West Virginia: Today - Partly cloudy with a chance of thunderstorms, high in upper 80s, lows in mid 60s. Thursday - Partly cloudy, high near 90.

The National Weather Forecast for toay - Showers and thunderstorms are likely along the Gulf of Mexico coast, from the lower Mississippi Valley to the south Atlantic Coast area, and from the upper Ohio Valley into the north Atlantic Coast states. There is a chance for widely scattered thundershowers in the middle Atlantic Coast states, and from the central and southern Rockies into the southern Plains. Skies will be sunny to mostly sunny across much of the remainder of the nations. Temperatures will be hot from the West Coast into the Plateau and northern Rockies. Warm weather can be expected throughout most of the rest of the U.S.

Almanac Data for today: The sun rises 6:16 a.m., sets 8:11 p.m.; moon rises 11:34 sets 11:11. Tides high 2:12 p.m. and 12:43 a.m., low 6:46 a.m., and 6:46 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 1/2), Norfolk (1), Virginia Beach (3/4), Solomons Island (6 1/2), 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 44 for the pollutant, Photo chemical oxidants. Index values between 25 and 49 indicate fair air quality. When the index exceeds 100 the air is considered very unhealthy and eye ailments aare 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 fall to 5.5 feet today. Local Temps. Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 midnite(COLUMN)81(COLUMN)85 1 a.m.(COLUMN)80(COLUMN)88 2 a.m.(COLUMN)80(COLUMN)88 3 a.m.(COLUMN)79(COLUMN)91 4 a.m.(COLUMN)78(COLUMN)94 5 a.m.(COLUMN)78(COLUMN)94 6 a.m.(COLUMN)77(COLUMN)94 7 a.m.(COLUMN)77(COLUMN)94 8 a.m.(COLUMN)79(COLUMN)88 9 a.m.(COLUMN)80(COLUMN)85 10 a.m.(COLUMN)82(COLUMN)80 11 a.m.(COLUMN)84(COLUMN)75 12 noon(COLUMN)84(COLUMN)75 1 p.m.(COLUMN)86(COLUMN)70 2 p.m.(COLUMN)89(COLUMN)60 3 p.m.(COLUMN)89(COLUMN)62 4 p.m.(COLUMN)89(COLUMN)62 5 p.m.(COLUMN)88(COLUMN)64 6 p.m.(COLUMN)88(COLUMN)64 7 p.m.(COLUMN)87(COLUMN)66(END TABLE) Temperatures ending 8 a.m. (EDT) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)79(COLUMN)72 Albuquerque(COLUMN)96(COLUMN)60 Amarillo(COLUMN)91(COLUMN)63 Anchorage(COLUMN)67(COLUMN)58 Asheville(COLUMN)76(COLUMN)66 Atlanta(COLUMN)80(COLUMN)69 Atlantic City(COLUMN)78(COLUMN)72 Austin(COLUMN)94(COLUMN)72 Baltimore(COLUMN)89(COLUMN)73 Billings(COLUMN)91(COLUMN)60 Birmingham(COLUMN)82(COLUMN)71 Bismarck(COLUMN)94(COLUMN)57 Boise(COLUMN)94(COLUMN)58 Boston(COLUMN)74(COLUMN)67 Brownsville(COLUMN)94(COLUMN)74 Buffalo(COLUMN)75(COLUMN)69 Burlington(COLUMN)82(COLUMN)68 Casper(COLUMN)90(COLUMN)54 Charleston, S.C.(COLUMN)88(COLUMN)78 Charleston, W.Va.(COLUMN)74(COLUMN)66 Charlotte(COLUMN)89(COLUMN)70 Cheyenne(COLUMN)83(COLUMN)54 Chicago(COLUMN)80(COLUMN)66 Cincinnati(COLUMN)76(COLUMN)59 Cleveland(COLUMN)82(COLUMN)64 Columbia, S.C.(COLUMN)90(COLUMN)69 Columbus(COLUMN)83(COLUMN)61 Dal.-Ft. Worth(COLUMN)92(COLUMN)69 Dayton(COLUMN)77(COLUMN)59 Denver(COLUMN)86(COLUMN)59 Des Moines(COLUMN)88(COLUMN)71 Detroit(COLUMN)74(COLUMN)61 Duluth(COLUMN)79(COLUMN)59 El Paso(COLUMN)91(COLUMN)67 Fairbanks(COLUMN)71(COLUMN)67 Fargo(COLUMN)94(COLUMN)56 Flagstaff(COLUMN)95(COLUMN)56 Great Falls(COLUMN)93(COLUMN)60 Hartford(COLUMN)78(COLUMN)72 Helena(COLUMN)93(COLUMN)55 Honolulu(COLUMN)89(COLUMN)74 Houston(COLUMN)90(COLUMN)76 Indianapolis(COLUMN)82(COLUMN)60 Jackson, Miss.(COLUMN)92(COLUMN)73 Jacksonville(COLUMN)88(COLUMN)71 Juneau(COLUMN)59(COLUMN)54 Kansas City(COLUMN)87(COLUMN)67 Las Vegas(COLUMN)111(COLUMN)86 Little Rock(COLUMN)87(COLUMN)67 Los Angeles(COLUMN)87(COLUMN)67 Louisville(COLUMN)82(COLUMN)62 Memphis(COLUMN)86(COLUMN)70 Miami Beach(COLUMN)85(COLUMN)80 Midland-Odessa(COLUMN)87(COLUMN)64 Milwaukee(COLUMN)79(COLUMN)64 Mpls.-St. Paul(COLUMN)88(COLUMN)72 Nashville(COLUMN)86(COLUMN)67 New Orleans(COLUMN)90(COLUMN)76 New York(COLUMN)80(COLUMN)76 Norfolk(COLUMN)91(COLUMN)73 North Platte(COLUMN)92(COLUMN)62 Oklahoma City(COLUMN)93(COLUMN)67 Omaha(COLUMN)90(COLUMN)68 Orlando(COLUMN)90(COLUMN)75 Philadelphia(COLUMN)90(COLUMN)78 Phoenix(COLUMN)106(COLUMN)82 Pittsburgh(COLUMN)76(COLUMN)60 Portland, Me.(COLUMN)78(COLUMN)65 Portland, Ore.(COLUMN)101(COLUMN)65 Providence(COLUMN)76(COLUMN)73 Raleigh(COLUMN)91(COLUMN)72 Rapid City(COLUMN)93(COLUMN)58 Reno(COLUMN)100(COLUMN)69 Richmond(COLUMN)90(COLUMN)74 St. Louis(COLUMN)84(COLUMN)64 St. Prbg.-Tampa(COLUMN)91(COLUMN)76 Salt Lake City(COLUMN)97(COLUMN)73 San Antonio(COLUMN)92(COLUMN)74 San Diego(COLUMN)81(COLUMN)70 San Francisco(COLUMN)68(COLUMN)54 San Juan(COLUMN)88(COLUMN)75 St. Ste. Marie(COLUMN)84(COLUMN)54 Seattle(COLUMN)88(COLUMN)67 Shreveport(COLUMN)92(COLUMN)66 Sioux Falls(COLUMN)86(COLUMN)65 Spokane(COLUMN)94(COLUMN)58 Syracuse(COLUMN)81(COLUMN)69 Topeka(COLUMN)87(COLUMN)66 Tucson(COLUMN)100(COLUMN)75 Tulsa(COLUMN)94(COLUMN)68 Washington(COLUMN)90(COLUMN)77 Wichita(COLUMN)39(COLUMN)66(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)rain(COLUMN)1 p.m.(COLUMN)55 Amsterdam(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)61 Ankara(COLUMN)clear(COLUMN)3 p.m.(COLUMN)81 Athens(COLUMN)clear(COLUMN)2 p.m(COLUMN)86 Auckland(COLUMN)clear(COLUMN)12 a.m.(COLUMN)52 Berlin(COLUMN)rain(COLUMN)1 p.m.(COLUMN)59 Birmingham(COLUMN)rain(COLUMN)1 p.m.(COLUMN)55 Bonn(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)63 Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)63 Cairo(COLUMN)clear(COLUMN)2 p.m.(COLUMN)95 Copenhagen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)68 Dublin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)61 Geneva(COLUMN)rain(COLUMN)1 p.m.(COLUMN)55 Hong Kong(COLUMN)pt. cldy(COLUMN)8 p.m.(COLUMN)84 Lisbon(COLUMN)clear(COLUMN)12 p.m.(COLUMN)77 London(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)59 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)73 Malta(COLUMN)clear(COLUMN)1 p.m.(COLUMN)88 Manila(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)79 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)84 Oslo(COLUMN)clear(COLUMN)1 p.m.(COLUMN)72 Paris(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)59 Peking(COLUMN)rain(COLUMN)8 p.m.(COLUMN)72 Rome(COLUMN)clear(COLUMN)1 p.m.(COLUMN)77 Saigon(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)81 Sofia(COLUMN)clear (COLUMN)2 p.m.(COLUMN)86 Stockholm(COLUMN)clear(COLUMN)1 p.m.(COLUMN)68 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)52 Tokyo(COLUMN)cloudy(COLUMN)9 p.m.(COLUMN)84 Vienna(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)63 Warsaw(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)61(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)H.(COLUMN)L. Acapulco(COLUMN)fair(COLUMN)90(COLUMN)75 Barbados(COLUMN)cloudy(COLUMN)88(COLUMN)75 Bermuda(COLUMN)pt. cldy(COLUMN)87(COLUMN)76 Calgary(COLUMN)clear(COLUMN)82(COLUMN)59 Culiacan(COLUMN)fair(COLUMN)99(COLUMN)75 Edmonton(COLUMN)cloudy(COLUMN)73(COLUMN)59 Havana(COLUMN)cloudy(COLUMN)88(COLUMN)72 Kingston(COLUMN)pt. cldy(COLUMN)90(COLUMN)75 Montego Bay(COLUMN)fair(COLUMN)90(COLUMN)73 Mexico City(COLUMN)rain(COLUMN)65(COLUMN)55 Monterrey(COLUMN)clear(COLUMN)95(COLUMN)72 Montreal(COLUMN)cloudy(COLUMN)82(COLUMN)66 Nassau(COLUMN)fair(COLUMN)90(COLUMN)75 Ottawa(COLUMN)rain(COLUMN)82(COLUMN)66 Regina(COLUMN)clear(COLUMN)84(COLUMN)45 St. Kitts(COLUMN)pt. cldy(COLUMN)86(COLUMN)75 St. Thomas(COLUMN)pt. cldy(COLUMN)87(COLUMN)71 Toronto(COLUMN)cloudy(COLUMN)77(COLUMN)61 Vancouver(COLUMN)clear(COLUMN)82(COLUMN)63 Veracuz(COLUMN)cloudy(COLUMN)90(COLUMN)72 Winnipeg(COLUMN)cloudy(COLUMN)88(COLUMN)54(END TABLE)