Washington: Today -- Mostly cloudy, high in mid to upper 50s, low in upper 30s to mid 40s. Chance of precipitation is 10 per cent today, near zero tonight. Seturday -- Mostly sunny, high near 70.

Maryland and Virginia: Today --Cloudy, high in upper 50s, low in upper 30s to mid 40s. Chance of rain in west. Saturday -- Mostly sunny, high near 70.

Lower Potomac and Chesapeake Bay: Today -- Mostly cloudy skies with visibility from poor to good with northeasterly winds at 10 to 15 knots through tonight.

Extended Area Outlook: For Sunday through Tuesday -- Fair skies with warming trend through period. Highs should range from low 70s Sunday to 80s by Tuesday with lows mostly in 50s through period. Washington's normal temperature range for this time of year is from 13 to 51.

West Virginia: Today -- Mostly sunny, high in mid 50s to mid 60s, low in low 30s to mid 40s. Saturday -- Fair, highs in upper 60s to mid 70s.

The National Weather Forecast for Today -- There will be a chance for widely scattered rainshowers along the northern two thirds of the Pacific Coast and from New Mexico into eastern Colorado, Kansas and Oklahoma. Showers may also fall across the middle Ohio River Valley, the Tennessee River Valley, the southern Appalachians and the middle Atlantic Coast states and across northern Maine. Elsewhere, fair weather is expected. It will be cooler from the central Plains across the middle Mississippi Valley, the Ohio and Tennessee River Valleys, the Appalachians and the northern two thirds of the Atlantic Coast states. Warmer weather will move into the northern Plains and upper Mississippi Valley. Elsewhere, little temperature change is expected.

Almanac Data for April 29 Sun rises 6:12 a.m., sets 7:59 p.m; moon rises 4:54 p.m. sets 4:14 a.m. Tides: High 4:58 a.m. and 5:22 p.m. low 12:02 p.m. and 12:18 a.m. High and low tides at the following locations can be obtained by subtracting the hours indicated from the tides above. Annapol's (3 1/2); Bloody Point Lighthouse (4 1/2); Deale, Md. (4 1/2); Colonial Beach (6); Norfolk (1 1/2); Virginia Beach (1); Solomons Island (6 1/2); Point Lookout (7).

The Council of Government Air Quality Index for yesterday showed the high reading in the Washington area during the 2 to 3 p.m. period was 43 for the pollutant, photo-chemical oxidants. Index values between 25 and 49 indicate fair air quality. When the index exceeds 100 the air becomes hazardous and persons with lung, heart and eve problems should restrict their activity. The forecast for today indicates the air quality will improve.

The National Weather Service forecasts that the Potomac River stage at Little Falls will fail to near 3.7 feet this morning.

Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid(COLUMN)58(COLUMN)67 1 a.m.(COLUMN)54(COLUMN)80 2 a.m.(COLUMN)54(COLUMN)80 3 a.m.(COLUMN)56(COLUMN)77 4 a.m.(COLUMN)55(COLUMN)80 5 a.m.(COLUMN)55(COLUMN)72 6 a.m.(COLUMN)56(COLUMN)64 7 a.m.(COLUMN)55(COLUMN)66 8 a.m.(COLUMN)58(COLUMN)62 9 a.m.(COLUMN)64(COLUMN)58 10 a.m.(COLUMN)66(COLUMN)56 11 a.m.(COLUMN)75(COLUMN)45 12 noon(COLUMN)79(COLUMN)39 1 p.m.(COLUMN)80(COLUMN)35 2 p.m.(COLUMN)81(COLUMN)35 3 p.m.(COLUMN)81(COLUMN)34 4 p.m.(COLUMN)80(COLUMN)35 5 p.m.(COLUMN)69(COLUMN)51 6 p.m.(COLUMN)63(COLUMN)78(END TABLE)

Temperatures ending 8 a.m. (EDT) yesterday: (TABLE) City(COLUMN)HL. Albany(COLUMN)63(COLUMN)49 Albuquerque(COLUMN)78(COLUMN)53 Amarillo(COLUMN)83(COLUMN)58 Anchorage(COLUMN)44(COLUMN)31 Asheville(COLUMN)70(COLUMN)37 Atlanta(COLUMN)72(COLUMN)47 Atlantic City(COLUMN)54(COLUMN)51 Austin(COLUMN)82(COLUMN)57 Baltimore(COLUMN)68(COLUMN)49 Billings(COLUMN)71(COLUMN)43 Birmingham(COLUMN)75(COLUMN)46 Bismarck(COLUMN)70(COLUMN)34 Boise(COLUMN)74(COLUMN)47 Boston(COLUMN)59(COLUMN)46 Brownsville(COLUMN)83(COLUMN)68 Buffalo(COLUMN)61(COLUMN)38 Burlington, Vt.(COLUMN)65(COLUMN)54 Casper(COLUMN)73(COLUMN)42 Charleston, S.C.(COLUMN)72(COLUMN)59 Charleston, W,Va(COLUMN)71(COLUMN)60 Charlotte, N.C.(COLUMN)72(COLUMN)49 Cheyenne(COLUMN)69(COLUMN)42 Chicago(COLUMN)82(COLUMN)39 cincinnati(COLUMN)76(COLUMN)57 Cleveland(COLUMN)70(COLUMN)40 Columbia, S.C.(COLUMN)76(COLUMN)47 Columbus, Ohio(COLUMN)73(COLUMN)54 Dal.-Ft. Worth(COLUMN)89(COLUMN)63 Dayton(COLUMN)76(COLUMN)55 Denver(COLUMN)78(COLUMN)47 Des Moines(COLUMN)86(COLUMN)58 Detroit(COLUMN)74(COLUMN)39 Dulutn(COLUMN)72(COLUMN)30 El Paso(COLUMN)84(COLUMN)56 Fargo(COLUMN)71(COLUMN)44 Flagstaff(COLUMN)73(COLUMN)35 Great Falls(COLUMN)67(COLUMN)31 Hartford(COLUMN)64(COLUMN)50 Helena(COLUMN)67(COLUMN)35 Honolulu(COLUMN)86(COLUMN)74 Houston(COLUMN)82(COLUMN)64 Indianapolis(COLUMN)79(COLUMN)59 Jackson, Miss.(COLUMN)78(COLUMN)55 Jacksonville(COLUMN)76(COLUMN)43 Juneau(COLUMN)49(COLUMN)39 Kansas City(COLUMN)83(COLUMN)65 Las Vegas(COLUMN)91(COLUMN)60 Little Rock(COLUMN)80(COLUMN)62 Los Angeles(COLUMN)70(COLUMN)59 ouisville(COLUMN)77(COLUMN)58 Memphis(COLUMN)80(COLUMN)65 Miami Beach(COLUMN)77(COLUMN)72 Midland(COLUMN)82(COLUMN)58 Milwaukee(COLUMN)80(COLUMN)35 Mpls.-St. Paul(COLUMN)85(COLUMN)38 Nashville(COLUMN)76(COLUMN)58 New Orleans(COLUMN)79(COLUMN)52 New York(COLUMN)59(COLUMN)57 Norfolk(COLUMN)69(COLUMN)55 North Platte(COLUMN)85(COLUMN)46 Oklahoma City(COLUMN)84(COLUMN)63 Omaha(COLUMN)86(COLUMN)55 Orlando(COLUMN)78(COLUMN)48 Philadelphia(COLUMN)63(COLUMN)53 Phoenix(COLUMN)97(COLUMN)66 Pittsburgh(COLUMN)64(COLUMN)55 Portland, Me.(COLUMN)56(COLUMN)38 Portland,Ore.(COLUMN)72(COLUMN)50 Providence(COLUMN)58(COLUMN)42 Raleigh(COLUMN)73(COLUMN)43 Rapid City(COLUMN)72(COLUMN)43 Reno(COLUMN)74(COLUMN)37 Richmond(COLUMN)74(COLUMN)53 St. Louis(COLUMN)81(COLUMN)68 St. Prbg. Tampa(COLUMN)74(COLUMN)48 Salt Lake City(COLUMN)76(COLUMN)57 San Antonio(COLUMN)81(COLUMN)62 San Diego(COLUMN)65(COLUMN)58 San Francisco(COLUMN)55(COLUMN)51 San Juan, P.R.(COLUMN)87(COLUMN)73 St. Ste. Marie(COLUMN)60(COLUMN)24 Seattle(COLUMN)69(COLUMN)49 Shreveport(COLUMN)83(COLUMN)58 Sioux Falls(COLUMN)85(COLUMN)44 Spokane(COLUMN)68(COLUMN)40 Syracuse(COLUMN)63(COLUMN)47 Topeka(COLUMN)87(COLUMN)67 Tucson(COLUMN)89(COLUMN)60 Tulsa(COLUMN)85(COLUMN)64 Washington(COLUMN)70(COLUMN)53 Wichita(COLUMN)84(COLUMN)54(END TABLE)

Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)43 Amsterdam(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)57 Ankara(COLUMN)pt. cldy.(COLUMN)3 p.m.(COLUMN)55 Athens(COLUMN)pt. cldy.(COLUMN)2 p.m.(COLUMN)66 Auckland(COLUMN)rain(COLUMN)midnight(COLUMN)57 Berlin(COLUMN)clear(COLUMN)1 p.m.(COLUMN)55 Birmingham(COLUMN)rain(COLUMN)1 p.m.(COLUMN)43 Brussels(COLUMN)pt. cidy(COLUMN)1 p.m.(COLUMN)57 Cairo(COLUMN)pt. cldy.(COLUMN)2 p.m.(COLUMN)72 Casablanca(COLUMN)cloudy(COLUMN)noon(COLUMN)66 Dublin(COLUMN)rain(COLUMN)1 p.m.(COLUMN)48 Geneva(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55 Hong Kong(COLUMN)rain(COLUMN)8 p.m.(COLUMN)77 Lisbon(COLUMN)clear(COLUMN)noon(COLUMN)64 Madrid(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)75 Malta(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)68 Manila(COLUMN)pt. cldy.(COLUMN)8 p.m.(COLUMN)82 Moscow(COLUMN)rain(COLUMN)3 p.m.(COLUMN)50 New Delhi(COLUMN)storm(COLUMN)5 p.m.(COLUMN)79 Nice(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)63 Oslo(COLUMN)clear(COLUMN)1 p.m.(COLUMN)57 Paris(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)61 Peking(COLUMN)clear(COLUMN)8 p.m.(COLUMN)63 Rome(COLUMN)clear(COLUMN)1 p.m.(COLUMN)72 Saigon(COLUMN)clear(COLUMN)8 p.m.(COLUMN)86 Sofia(COLUMN)pt. cldy.(COLUMN)2 p.m.(COLUMN)66 Stockholm(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)54 Sydney(COLUMN)pt. cldy.(COLUMN)10 p.m.(COLUMN)63 Tel Avlv(COLUMN)pt. cldy.(COLUMN)2 p.m.(COLUMN)68 Tokyo(COLUMN)clear(COLUMN)1 p.m.(COLUMN)84 Tunis(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)84 Vienna(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)61(END TABLE)

Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)pt. cldy.(COLUMN)87(COLUMN)73 Barbados(COLUMN)pt. cldy.(COLUMN)82(COLUMN)73 Bermuda(COLUMN)pt. cldy.(COLUMN)73(COLUMN)62 Calgary(COLUMN)clear(COLUMN)63(COLUMN)39 Culiacan(COLUMN)sunny(COLUMN)86(COLUMN)61 Edmonton(COLUMN)Clear(COLUMN)55(COLUMN)34 Havana(COLUMN)sunny(COLUMN)77(COLUMN)66 Kingston(COLUMN)cloudy(COLUMN)86(COLUMN)75 Montego Bay(COLUMN)sunny(COLUMN)85(COLUMN)75 Mexico City(COLUMN)pt. cldy.(COLUMN)75(COLUMN)45 Monterrey(COLUMN)cloudy(COLUMN)87(COLUMN)64 Montreal(COLUMN)rain(COLUMN)61(COLUMN)43 Nassau(COLUMN)sunny(COLUMN)83(COLUMN)68 Ottawa(COLUMN)cloudy(COLUMN)57(COLUMN)34 Regina(COLUMN)pt. cldy.(COLUMN)70(COLUMN)39 St. Kitts(COLUMN)pt. cldy.(COLUMN)86(COLUMN)73 St. Thomas(COLUMN)pt. cldy.(COLUMN)84(COLUMN)72 Toronto(COLUMN)cloudy(COLUMN)63(COLUMN)34 Vancouver(COLUMN)clear(COLUMN)59(COLUMN)43 Veracruz(COLUMN)pt. cldy.(COLUMN)79(COLUMN)66 Winnipeg(COLUMN)pt. cldy.(COLUMN)57(COLUMN)30(END TABLE)