Washington: Today - Sunny, high near 90, low in the mid 50s. The chance of rain is near zero today and 10 per cent tonight. Thursday - Sunny, high near 90.

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

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

Extended Area Forecast for Friday through Sunday: Fair through the period. Highs will be in the 80s, lows in the 50s. Normal Washington temperatures for the period are a high of 67 and a low of 46.

The National Weather Forecast for Today - Showers and thunderstorms are expected over the western lower Mississippi Valley, the southern half of the plains and the middle Mississippi Valley through the upper Great Lakes. There may be rain or showers over northern New England into the lower Great Lakes. Showers will scatter over much of the Pacific northwest, while the remainder of the nation will be mostly sunny. Unseasonably warm weather will continue over the middle Atlantic coast and the Carolinas through the central Appalachians. The West will be cool. There will be mild readings elsewhere.

The Council of Governments' Air Ouality Index for yesterday showed the high reading in the Washington area during the 2 p.m. to 3 p.m. period was 125 for the pollutant photochemical oxidants. When the index exceeds 100 the air becomes hazardous and persons with lung heart and eye problems should restrict their activity. The forecast from today indicates the air quality will improve.

The National Weather Service forecast that the Potomac River slege at Little Falls will be near 45 feet.

Washington data at 7 p.m. (E.S.T.) yesterday: Highest temperature since 7 a.m. yesterday [WORD ILLEGIBLE] degrees at 1:26 p.m. Lowest temperature since midnight, 52 degrees at 5:40.Excess of temperature since April 1, 9 degrees. Defiency of temperature since Jan. 1, 10 degrees. Record high temperature for today, 87 degrees in 1896. Record low temperature for today, 26 degrees in 1874. Relative humidity: Maximum, 100 per cent at 6 a.m.; Minimum, 23 per cent at 5 p.m. Excess of precipitation since April 1, .08 inches. Deficiency of precipitation since Jan. 1, 3.99 inches. Highest observed wind since 7 a.m. 16 miles per hour from the west at 2:53 p.m. Peak gust since 7 a.m., 24 miles per hour from the northwest at 2:40 p.m. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid.(COLUMN)63(COLUMN)70 1 a.m.(COLUMN)57(COLUMN)83 2 a.m.(COLUMN)56(COLUMN)90 3 a.m.(COLUMN)56(COLUMN)90 4 a.m.(COLUMN)54(COLUMN)93 5 a.m.(COLUMN)53(COLUMN)96 6 a.m.(COLUMN)52(COLUMN)100 7 a.m.(COLUMN)55(COLUMN)90 8 a.m.(COLUMN)61(COLUMN)81 9 a.m.(COLUMN)67(COLUMN)68 10 a.m.(COLUMN)83(COLUMN)33 11 a.m.(COLUMN)85(COLUMN)30 12 noon(COLUMN)87(COLUMN)29 1 p.m.(COLUMN)88(COLUMN)28 2 p.m.(COLUMN)89(COLUMN)26 3 p.m.(COLUMN)89(COLUMN)65 4 p.m.(COLUMN)89(COLUMN)24 5 p.m.(COLUMN)89(COLUMN)23 6 p.m.(COLUMN)84(COLUMN)25 7 p.m.(COLUMN)84(COLUMN)25(END TABLE) Temperatures ending 8 a.m. (EST) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)64(COLUMN)43 Alouquerque(COLUMN)72(COLUMN)37 Amarillo(COLUMN)60(COLUMN)56 Anchorage(COLUMN)29(COLUMN)22 Asheville(COLUMN)80(COLUMN)45 Atlanta(COLUMN)83(COLUMN)55(KEY OFF)Atlantic City 56(COLUMN)49 Austin(COLUMN)80(COLUMN)60 Baltimore(COLUMN)81(COLUMN)56 Billings(COLUMN)62(COLUMN)42 Birmingham(COLUMN)84(COLUMN)51 Bismarck(COLUMN)61(COLUMN)34 Boise(COLUMN)64(COLUMN)30 Boston(COLUMN)55(COLUMN)42 Brownsville(COLUMN)84(COLUMN)69 Buffalo(COLUMN)67(COLUMN)47 Burlongton(COLUMN)65(COLUMN)54 Casper(COLUMN)41(COLUMN)36 Charleston, S.C.(COLUMN)80(COLUMN)60 Charleston, W. Va.(COLUMN)82(COLUMN)51 Charlotte(COLUMN)85(COLUMN)51 Cheyenne(COLUMN)48(COLUMN)33 Chicago(COLUMN)85(COLUMN)53 Cinicnnati(COLUMN)82(COLUMN)47 Cleveland(COLUMN)81(COLUMN)53 Columbia, S.C.(COLUMN)89(COLUMN)52 Columbus(COLUMN)83(COLUMN)48 Dal. -Ft. Worth(COLUMN)82(COLUMN)60 Dayton(COLUMN)82(COLUMN)51 Denver(COLUMN)56(COLUMN)39 Des Moines(COLUMN)83(COLUMN)56 Detroit(COLUMN)87(COLUMN)54 Duluth(COLUMN)70(COLUMN)41 El Paso(COLUMN)81(COLUMN)38 Fairbanks(COLUMN)29(COLUMN)15 Fargo(COLUMN)65(COLUMN)44 Flagstaff(COLUMN)58(COLUMN)27 Great Falls(COLUMN)56(COLUMN)29 Hartford(COLUMN)59(COLUMN)38 Helena(COLUMN)59(COLUMN)30 Honolulu(COLUMN)84(COLUMN)73 Houston(COLUMN)78(COLUMN)66 Indianapolis(COLUMN)83(COLUMN)51 Jackson, Miss.(COLUMN)82(COLUMN)51 Jacksonville(COLUMN)78(COLUMN)51 Juneau(COLUMN)41(COLUMN)38 Kansas City(COLUMN)80(COLUMN)64 Las Vegas(COLUMN)83(COLUMN)54 Little Rock(COLUMN)81(COLUMN)59 Los Angeles(COLUMN)69(COLUMN)53 Louisville(COLUMN)85(COLUMN)52 Memphis(COLUMN)84(COLUMN)60 Miami Beach(COLUMN)74(COLUMN)70 Midland-Odessa(COLUMN)72(COLUMN)58 Milwaukee(COLUMN)83(COLUMN)55 Mpls. -St. Paul(COLUMN)76(COLUMN)49 Nashville(COLUMN)83(COLUMN)53 New Orleans(COLUMN)82(COLUMN)53 New York(COLUMN)57(COLUMN)49 Norfolk(COLUMN)84(COLUMN)59 North Platte(COLUMN)77(COLUMN)48 Oklahoma City(COLUMN)77(COLUMN)59 Omaha(COLUMN)83(COLUMN)57 Orlando(COLUMN)80(COLUMN)56 Philadelphia(COLUMN)76(COLUMN)48 Phoenix(COLUMN)81(COLUMN)59 Pittsburgh(COLUMN)82(COLUMN)52 Portland, Maine(COLUMN)40(COLUMN)36 Portland, Ore.(COLUMN)60(COLUMN)38 Providence(COLUMN)50(COLUMN)40 Raleigh(COLUMN)83(COLUMN)56 Rapid City(COLUMN)48(COLUMN)41 Reno(COLUMN)67(COLUMN)29 Richmond(COLUMN)90(COLUMN)50 St. Louis(COLUMN)85(COLUMN)59 St. Prbg. Tampa(COLUMN)81(COLUMN)59 Salt Lake City(COLUMN)60(COLUMN)36 San Antonio(COLUMN)81(COLUMN)65 San Diego(COLUMN)63(COLUMN)54 San Francisco(COLUMN)62(COLUMN)51 San Juan, P.R.(COLUMN)87(COLUMN)74 St. Ste. Marie(COLUMN)71(COLUMN)38 Seattle(COLUMN)58(COLUMN)40 Shreveport(COLUMN)81(COLUMN)53 Sioux Falls(COLUMN)76(COLUMN)46 Spokane(COLUMN)61(COLUMN)31 Syracuse(COLUMN)83(COLUMN)61 Topeka(COLUMN)82(COLUMN)62 Tucson(COLUMN)71(COLUMN)46 Tulsa(COLUMN)83(COLUMN)60 Washington(COLUMN)85(COLUMN)52 Wichita(COLUMN)79(COLUMN)63(END TABLE) Temperatures Abroad Yesterday(TABLE) $ City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)54 Amsterdam(COLUMN)rain(COLUMN)1 p.m.(COLUMN)48 Ankara(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)50 Athens(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)61 Auckland(COLUMN)clear(COLUMN)midnight(COLUMN)59 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)43 Birmingham(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55 Brussels(COLUMN)rain(COLUMN)1 p.m.(COLUMN)43 Cairo(COLUMN)clear(COLUMN)2 p.m.(COLUMN)81 Casablanca(COLUMN)cloudy(COLUMN)noon(COLUMN)70 Copenhagen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)41 Dublin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)54 Geneva(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)43 Hong Kong(COLUMN)cloudy (SECTION) H8 p.m.(COLUMN)75 Lisbon(COLUMN)clear(COLUMN)noon(COLUMN)59 London(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)57 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)63 Malta(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)57 Manila(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)79 Moscow(COLUMN)clear(COLUMN)3 p.m.(COLUMN)48 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)93 Nice(COLUMN)clear(COLUMN)1 p.m.(COLUMN)59 Oslo(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)37 Paris(COLUMN)rain(COLUMN)1 p.m.(COLUMN)46 Peking(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)55 Rome(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)59 Saigon(COLUMN)clear(COLUMN)8 p.m.(COLUMN)83 Sofia(COLUMN)clear(COLUMN)2 p.m.(COLUMN)45 Stockholm(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)41 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)64 Tel Avlv(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)68 Tokyo(COLUMN)cloudy(COLUMN)9 p.m.(COLUMN)63 Tunis(COLUMN)rain(COLUMN)1 p.m.(COLUMN)55 Vienna(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)43 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)41(END TABLE) Temperatures (Western Hemisphere)(TABLE) $ City(COLUMN)(COLUMN)H.(COLUMN)L. Acapulco(COLUMN)pt. cldy(COLUMN)92(COLUMN)75 Barbados(COLUMN)pt. cldy(COLUMN)85(COLUMN)75 Bermuda(COLUMN)clear(COLUMN)65(COLUMN)59 Bogota(COLUMN)pt. cldy(COLUMN)67(COLUMN)51 Calgary(COLUMN)clear(COLUMN)48(COLUMN)27 Culican(COLUMN)pt. cldy(COLUMN)94(COLUMN)53 Edmonton(COLUMN)clear(COLUMN)52(COLUMN)23 Havana(COLUMN)pt. cldy(COLUMN)81(COLUMN)71 Kingston(COLUMN)pt. cldy(COLUMN)86(COLUMN)75 Montego Bay(COLUMN)pt. cldy(COLUMN)86(COLUMN)73 Mexico(COLUMN)pt. cldy(COLUMN)73(COLUMN)51 Monterrey(COLUMN)cloudy(COLUMN)68(COLUMN)64 Montreal(COLUMN)pt. cldy(COLUMN)63(COLUMN)46 Nassau(COLUMN)pt. cldy(COLUMN)79(COLUMN)68 Ottawa(COLUMN)pt. cldy(COLUMN)68(COLUMN)50 Regina(COLUMN)clear(COLUMN)66(COLUMN)25 St. Kitts(COLUMN)pt. cldy(COLUMN)85(COLUMN)70 St. Thomas(COLUMN)pt. cldy(COLUMN)87(COLUMN)71 Toronto(COLUMN)pt. cldy(COLUMN)81(COLUMN)57 Vancouver(COLUMN)cloudy(COLUMN)54(COLUMN)39 Veracruz(COLUMN)pt. cldy(COLUMN)82(COLUMN)68 Winnipeg(COLUMN)cloudy(COLUMN)64(COLUMN)39(END TABLE)(KEYWORD)