Washington: Today and Tuesday - Continued warm and humid with occasional thunderstorms likely, high in the 80s, low in the 70s. The chance of rain is 70 percent. Winds will be from the south at 10 mph.

Maryland and Virginia: Today and Tuesday - Variable cloudiness, warm and humid with occasional thunderstorms likely, highs between 80 and 90 lows from the mid 60s to mid 70s.

Extended Area Forecast for Wednesday through Friday - Partly cloudy, warm and humid with isolated thunderstorms each day. Highs will average from the low 80s to the low 90s, lows from the mid 60s to mid 70s. Normal Washington temperatures are a high of 66 and a low of 69.

Lower Potomac and Chesapeake Bay - Occasional showers and thunderstorms likely with some heavy downpours and gusty winds. Visibility will be 5 miles or more diminishing to less than 1 mile in rain and patchy fog. Winds will be southerly at 5 to 15 knots. Waves will average 10 to 2 feet.

Atlantic Ocean Beaches from New Jersey in North Carolina: Today and Tuesday - Variable cloudiness, warm and humid with a chance of occasional thunderstorms, highs from the low 60s to near 90. Water temperatures will range from the low 70s in the north to near 80 in the south.

West Virginia: Today and Tuesday - Variable cloudiness with periods of showers or thundershowers, highs from the mid 70s to mid 80s, lows from the low 60s to low 70s.

The National Weather forecast for today - Showers and thunderstorms will range through the Gulf of Mexico coast area, and extend from the lower Mississippi Valley to the Atlantic from southern of New England to Florida. There is a chance for widely scattered showers, or thundershowers in Texas and from eastern Montana into the central Rockies. Skies will be mostly sunny from the West Coast into the Plains. Temperatures will be hot from the West Coast into the Great Basin and the northern Rockies and in the northern Plains. Mild to warm conditions will prevent through most of the remainder of the country.

Almanac Data for today: The sun rises 6:12 a.m.; 8:13 p.m.; moon rises 9:36 a.m., sets [WORD ILLEGIBLE] a.m. Tides: high 10:52 a.m. and 11:09 p.m.; low 5:32 a.m. and 5:48 p.m. High and low tides at the following locations may be obtained to substracting the hours indicated from the hours above: Annapolis (3 1/4), Bloody Point Lighthouse (4 1/4), Deale, Md., (4 1/2), Colonial Beach (5 1/4), Norfolk (1), Virginia Beach (3/4), Solomons Island (5 1/4), Point Lookout (7).

The Council of Governments' Air Quality Index for yesterday showed the high reading in the Washington area during the 1 p.m. period was 13 for the pollutant, photochemical oxidants. Index values between 0 and 24 indicate good air quality. When the index exceeds 100 the air is considered very unhealty and individuals with lung, heart and eye ailments are urged to restrict their activity. The forecast for today indicates that the air quality will remain about the same.

The National Weather Service forecasts the Potomac River Stade at Little Falls should rise to near 4.8 feet today. Loca Temps., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mdnt.(COLUMN)76(COLUMN)91 1 a.m.(COLUMN)77(COLUMN)88 2 a.m.(COLUMN)77(COLUMN)88 3 a.m.(COLUMN)76(COLUMN)94 4 a.m.(COLUMN)76(COLUMN)97 5 a.m.(COLUMN)76(COLUMN)97 6 a.m.(COLUMN)76(COLUMN)97 7 a.m.(COLUMN)76(COLUMN)97 8 a.m.(COLUMN)77(COLUMN)94 9 a.m.(COLUMN)78(COLUMN)94 10 a.m.(COLUMN)79(COLUMN)94 11 a.m.(COLUMN)80(COLUMN)91 12 noon(COLUMN)81(COLUMN)88 1 p.m.(COLUMN)83(COLUMN)85 2 p.m.(COLUMN)86(COLUMN)77 3 p.m.(COLUMN)86(COLUMN)80 4 p.m.(COLUMN)85(COLUMN)80 5 p.m.(COLUMN)81(COLUMN)94 6 p.m.(COLUMN)81(COLUMN)91 7 p.m.(COLUMN)81(COLUMN)91(END TABLE) Temperatures ending 8 a.m. (EDT) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN) 78(COLUMN)67 Albuquerque(COLUMN) 89(COLUMN)60 Amarillo(COLUMN) 82(COLUMN)56 Anchorage(COLUMN) 61(COLUMN)50 Asheville(COLUMN) 83(COLUMN)69 Atlanta(COLUMN) 85(COLUMN)69 Atlantic City(COLUMN) 74(COLUMN)72 Austin(COLUMN) 92(COLUMN)73 Baltimore(COLUMN) 81(COLUMN)73 Billings(COLUMN) 92(COLUMN)62 Birmingham(COLUMN) 84(COLUMN)69 Bismarck(COLUMN) 86(COLUMN)52 Boise(COLUMN) 97(COLUMN)71 Boston(COLUMN) 68(COLUMN)65 Brownsville(COLUMN) 97(COLUMN)75 Buffalo(COLUMN) 83(COLUMN)69 Burlington, Vt.(COLUMN) 79(COLUMN)63 Casper(COLUMN) 91(COLUMN)56 Charleston, S.C.(COLUMN) 85(COLUMN)76 Charleston, W.Va.(COLUMN) 81(COLUMN)67 Charlotte(COLUMN) 92(COLUMN)72 Cheyenne(COLUMN) 83(COLUMN)52 Chicago(COLUMN) 76(COLUMN)61 Cincinnati(COLUMN) 70(COLUMN)68 Cleveland(COLUMN) 75(COLUMN)67 Columbia, S.C.(COLUMN) 87(COLUMN)71 Columbus(COLUMN) 71(COLUMN)68 Dal.-Ft. Worth(COLUMN) 81(COLUMN)66 Dayton(COLUMN) 73(COLUMN)64 Denver(COLUMN) 86(COLUMN)55 Des Moines(COLUMN) 82(COLUMN)57 Detroit(COLUMN) 78(COLUMN)58 Duluth(COLUMN) 81(COLUMN)53 El Paso(COLUMN) 82(COLUMN)64 Evansville(COLUMN) 78(COLUMN)65 Fairbanks(COLUMN) 73(COLUMN)61 Fargo(COLUMN) 83(COLUMN)54 Flagstaff(COLUMN) 86(COLUMN)50 Great Falls(COLUMN) 96(COLUMN)57 Hartford(COLUMN) 77(COLUMN)67 Helena(COLUMN) 95(COLUMN)54 Honolulu(COLUMN) 88(COLUMN)75 Houston(COLUMN) 94(COLUMN)75 Indianapolis(COLUMN) 81(COLUMN)64 Jackson(COLUMN) 92(COLUMN)75 Jacksonville(COLUMN) 88(COLUMN)73 Juneau(COLUMN) 65(COLUMN)42 Kansas City(COLUMN) 79(COLUMN)58 Las Vegas(COLUMN)109(COLUMN)84 Little Rock(COLUMN) 84(COLUMN)64 Los Angeles(COLUMN) 90(COLUMN)70 Louisville(COLUMN) 76(COLUMN)69 Memphis(COLUMN) 83(COLUMN)69 Miami Beach(COLUMN) 87(COLUMN)77 Midland(COLUMN) 75(COLUMN)66 Milwaukee(COLUMN) 75(COLUMN)57 Mpls.-St. Paul(COLUMN) 86(COLUMN)62 Nashville(COLUMN) 79(COLUMN)71 New Orleans(COLUMN) 93(COLUMN)78 New York(COLUMN) 70(COLUMN)70 Norfolk(COLUMN) 87(COLUMN)76 North Platte(COLUMN) 83(COLUMN)51 Oklahoma City(COLUMN) 81(COLUMN)63 Omaha(COLUMN) 82(COLUMN)65 Orlando(COLUMN) 90(COLUMN)73 Philadelphia(COLUMN) 82(COLUMN)75 Phoenix(COLUMN)106(COLUMN)84 Pittsburgh(COLUMN) 71(COLUMN)68 Portland, Me.(COLUMN) 74(COLUMN)60 Portland, Ore.(COLUMN) 84(COLUMN)60 Providence(COLUMN) 73(COLUMN)66 Raleigh(COLUMN) 85(COLUMN)74 Rapid City(COLUMN) 83(COLUMN)58 Reno(COLUMN) 99(COLUMN)55 Richmond(COLUMN) 88(COLUMN)73 St. Louis(COLUMN) 73(COLUMN)57 St. Prbg.-Tampa(COLUMN) 90(COLUMN)75 Salt Lake City(COLUMN)101(COLUMN)66 San Antonio(COLUMN) 94(COLUMN)72 San Diego(COLUMN) 82(COLUMN)71 San Francisco(COLUMN) 72(COLUMN)55 San Juan(COLUMN) 89(COLUMN)77 St. Ste. Marie(COLUMN) 78(COLUMN)53 Seattle(COLUMN) 79(COLUMN)63 Shreveport(COLUMN) 82(COLUMN)70 Sioux Falls(COLUMN) 82(COLUMN)64 Spokane(COLUMN) 93(COLUMN)59 Syracuse(COLUMN) 81(COLUMN)70 Topeka(COLUMN) 80(COLUMN)55 Tucson(COLUMN) 96(COLUMN)74 Tulsa(COLUMN) 86(COLUMN)66 Washington(COLUMN) 87(COLUMN)76 Wichita(COLUMN) 83(COLUMN)61(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)drizzle(COLUMN) 1 p.m.(COLUMN)55 Amsterdam(COLUMN)rain(COLUMN) 1 p.m.(COLUMN)59 Ankara(COLUMN)clear(COLUMN) 3 p.m.(COLUMN)79 Athens(COLUMN)clear(COLUMN) 2 p.m.(COLUMN)86 Auckland(COLUMN)clear(COLUMN)midnight(COLUMN)45 Berlin(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)73 Birmingham(COLUMN)rain(COLUMN) 1 p.m.(COLUMN)61 Bonn(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)66 Brussels(COLUMN)rain(COLUMN) 1 p.m.(COLUMN)63 Cairo(COLUMN)clear(COLUMN) 2 p.m.(COLUMN)93 Casablanca(COLUMN)pt. cldy.(COLUMN) noon(COLUMN)72 Copenhagen(COLUMN)pt. cldy.(COLUMN) 1 p.m.(COLUMN)68 Dublin(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)59 Geneva(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)75 Hong Kong(COLUMN)cloudy(COLUMN) 8 p.m.(COLUMN)82 Jerusalem(COLUMN)clear(COLUMN) 2 p.m.(COLUMN)82 Lisbon(COLUMN)pt. cldy.(COLUMN) noon(COLUMN)75 London(COLUMN)pt. cldy.(COLUMN) 1 p.m.(COLUMN)64 Madrid(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)88 Malta(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)95 Manila(COLUMN)cloudy(COLUMN) 8 p.m.(COLUMN)77 Moscow(COLUMN)cloudy(COLUMN) 3 p.m.(COLUMN)68 New Delhi(COLUMN)rain(COLUMN) 5 p.m.(COLUMN)88 Nice(COLUMN)pt. cldy.(COLUMN) 1 p.m.(COLUMN)79 Oslo(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)61 Paris(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)64 Peking(COLUMN)cloudy(COLUMN) 8 p.m.(COLUMN)70 Rome(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)88 Saigon(COLUMN)cloudy(COLUMN) 8 p.m.(COLUMN)84 Sofia(COLUMN)pt. cldy.(COLUMN) 2 p.m.(COLUMN)77 Stockholm(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)66 Sydney(COLUMN)cloudy(COLUMN)10 p.m.(COLUMN)59 Tokyo(COLUMN)clear(COLUMN) 9 p.m.(COLUMN)82 Tunis(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)95 Vienna(COLUMN)pt. cldy.(COLUMN) 1 p.m.(COLUMN)81 Warsaw(COLUMN)pt. cldy.(COLUMN)10 p.m.(COLUMN)73(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)fair(COLUMN)90(COLUMN)78 Barbados(COLUMN)cloudy(COLUMN)83(COLUMN)78 Bermuda(COLUMN)fair(COLUMN)86(COLUMN)80 Calgary(COLUMN)cloudy(COLUMN)86(COLUMN)50 Edmonton(COLUMN)ptly cldy.(COLUMN)73(COLUMN)46 Havana(COLUMN)cloudy(COLUMN)90(COLUMN)72 Kingston(COLUMN)rain(COLUMN)94(COLUMN)75 Montego Bay(COLUMN)cloudy(COLUMN)90(COLUMN)75 Mexico City(COLUMN)cloudy(COLUMN)77(COLUMN)59 Monterrey(COLUMN)fair(COLUMN)95(COLUMN)73 Montreal(COLUMN)cloudy(COLUMN)79(COLUMN)61 Nassau(COLUMN)cloudy(COLUMN)88(COLUMN)72 Ottawa(COLUMN)clear(COLUMN)79(COLUMN)57 Regina(COLUMN)clear(COLUMN)91(COLUMN)55 St. Kitts(COLUMN)ptly. cloudy(COLUMN)90(COLUMN)80 St. Thomas(COLUMN)fair(COLUMN)91(COLUMN)79 Toronto(COLUMN)cloudy(COLUMN)77(COLUMN)54 Vancouver(COLUMN)ptly. cldy.(COLUMN)77(COLUMN)55 Veracruz(COLUMN)ptly. cldy(COLUMN)88(COLUMN)75 Winnipeg(COLUMN)clear(COLUMN)72(COLUMN)50(END TABLE)