Washington: Today - Partly cloudy and windy, high in mid to upper 30s, low in teens. Chance of precipitation 10 per cent today, near zero tonight. Wednesday - Partly cloudy and windy, high in low to mid 30s.

Maryland and Virginia: Today - Partly cloudy and windy, highs in 10s to low 40s, lows from near zero to 20s. Wednesday - Partly cloudy and windy, highs mostly in 30s.

Lower Potomac and Chesapeake Bay: Today - Partly cloudy skies with visibility greater than 5 miles and northwesterly winds 15 to 25 knots through tonight.

Extended Area Outlook: For Thursday through Saturday - Fair skies Thursday and Saturday with chance of pracipitation Friday. Highs should range Thursday's in 30s to Saturday's in 40s, low from Thursday's in teens to Saturday's in 20s. Washington's normal temperature range for this time of year is 46 to 29.

Almanac data for Feb. 15: Sunrises 7:00 a.m., sets 5:45 p.m.; moon rises 4:55 a.m., sets 3:29 p.m.

Tides: High 5:42 a.m. and 6:13 p.m., low 12:01 a.m. and 12:21 p.m. High and low tides at the following points can be obtained by subtracting the hours indicated from the tides above: Annapolis (3 1/4); Bloody Point Lighthouse (4 1/2) Deale, Md. (4 1/2); Colonial Beach (6); Norfolk (1 1/2); Virginia Beach (1); Solomon's 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 28. 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 eye 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 remain near 3.6 feet today.

Washington data at 7 p.m. (EST) yesterday: Highest temperature since 7 a.m. yesterday, 51 degrees at 1:35 p.m. Lowest temperature since midnight, 29 degrees at 7:10 a.m. Record high temperature for today, 71 degrees in 1949. Record low temperature for today, -6 degrees in, 1899. Deficiency of temperature since Feb. 1, 11 degrees.Dificiency of temperature since Jan. 1, 315 degrees. Relative humidity: Maximum, 72 per cent at 7 a.m.; Minimum, 35 per cent at 2 p.m. 24 hour precipitation, no inches. Defiency of precipitation since Feb. 1, 1.12 inches. Deficiency of precipitation since Jan. 1, 2.24 inches. Highest observed wind since 8 a.m., 14 miles per hour from the S.S.W. at 11:53 a.m. Peak gust since 8 a.m., 23 miles per hour from the S.W. at 12:42 p.m. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid.(COLUMN)41(COLUMN)47 1 a.m.(COLUMN)40(COLUMN)48 2 a.m.(COLUMN)39(COLUMN)50 3 a.m.(COLUMN)37(COLUMN)57 4 a.m.(COLUMN)33(COLUMN)66 5 a.m.(COLUMN)34(COLUMN)61 6 a.m.(COLUMN)33(COLUMN)69 7 a.m.(COLUMN)31(COLUMN)72 8 a.m(COLUMN)33(COLUMN)72 9 a.m.(COLUMN)35(COLUMN)72 10 a.m.(COLUMN)38(COLUMN)57 11 a.m.(COLUMN)42(COLUMN)55 12 noon(COLUMN)47(COLUMN)44 1 p.m.(COLUMN)49(COLUMN)37 2 p.m.(COLUMN)50(COLUMN)35 3 p.m(COLUMN)50(COLUMN)39 4 p.m.(COLUMN)49(COLUMN)41 5 p.m.(COLUMN)50(COLUMN)35 6 p.m.(COLUMN)49(COLUMN)36(END TABLE) Temperatures ending 7 a.m. (EST) yesterday:(TABLE) City(COLUMN)H. . Albany(COLUMN)45(COLUMN)30 Albuquerque(COLUMN)62(COLUMN)32 Amarillo(COLUMN)69(COLUMN)39 Anchorage(COLUMN)34(COLUMN)28 Asheville(COLUMN)50(COLUMN)22 Atlanta(COLUMN)55(COLUMN)26 Atlantic City(COLUMN)51(COLUMN)35 Austin(COLUMN)71(COLUMN)41 Baltimore(COLUMN)52(COLUMN)29 Billings(COLUMN)50(COLUMN)25 Birmingham(COLUMN)58(COLUMN)31 Bismarck(COLUMN)32(COLUMN)11 Boise(COLUMN)51(COLUMN)27 Boston(COLUMN)42(COLUMN)35 Brownsville(COLUMN)72(COLUMN)43 Buffalo(COLUMN)40(COLUMN)28 Burlington, Vt.(COLUMN)37(COLUMN)31 Casper(COLUMN)53(COLUMN)19 Charleston, S.C.(COLUMN)67(COLUMN)34 Charleston, W.V.(COLUMN)46(COLUMN)28 Charlottee, N.C.(COLUMN)60(COLUMN)25 Cheyenne(COLUMN)52(COLUMN)17 Chicago(COLUMN)35(COLUMN)30 Cincinnati(COLUMN)37(COLUMN)24 Cleveland(COLUMN)36(COLUMN)27 Columbia, S.C.(COLUMN)67(COLUMN)23 Columbus, Ohio(COLUMN)36(COLUMN)30 Dal.-Ft.Worth(COLUMN)71(COLUMN)42 Dayton(COLUMN)36(COLUMN)29 Denver(COLUMN)10(COLUMN)01 Des Moines(COLUMN)47(COLUMN)22 Detroit(COLUMN)35(COLUMN)28 Duluth(COLUMN)29(COLUMN)12 EI Paso(COLUMN)67(COLUMN)27 Fairbanks(COLUMN)16(COLUMN)00 Fargo(COLUMN)31(COLUMN)06 Flagstaff(COLUMN)68(COLUMN)35 Great Falls(COLUMN)51(COLUMN)25 Hartford(COLUMN)40(COLUMN)32 Helena(COLUMN)51(COLUMN)23 Honolulu(COLUMN)82(COLUMN)68 Houston(COLUMN)70(COLUMN)53 Indianapolis(COLUMN)38(COLUMN)28 Jackson, Miss(COLUMN)66(COLUMN)41 Jacksonville(COLUMN)67(COLUMN)40 Juneau(COLUMN)44(COLUMN)39 Kansas City(COLUMN)52(COLUMN)31 Las Vegas(COLUMN)78(COLUMN)45 Little Rock(COLUMN)62(COLUMN)46 Los Angeles(COLUMN)84(COLUMN)53 Louisville(COLUMN)46(COLUMN)27 Memphis(COLUMN)57(COLUMN)38 Miami Beach(COLUMN)80(COLUMN)69 Midland(COLUMN)71(COLUMN)39 Mllwaukee(COLUMN)35(COLUMN)23 Mpls.-St.Paul(COLUMN)35(COLUMN)19 Nashville(COLUMN)52(COLUMN)28 New Orleans(COLUMN)68(COLUMN)40 New York(COLUMN)50(COLUMN)37 Norfolk(COLUMN)60(COLUMN)11 North Platte(COLUMN)62(COLUMN)28 Oklahoma City(COLUMN)70(COLUMN)44 Omaha(COLUMN)52(COLUMN)25 Orlando(COLUMN)76(COLUMN)60 Philadelphia(COLUMN)50(COLUMN)31 Phoenix(COLUMN)79(COLUMN)54 Pittsburgh(COLUMN)41(COLUMN)29 Portland, Me.(COLUMN)38(COLUMN)26 Portland, Ore.(COLUMN)55(COLUMN)31 Providence(COLUMN)42(COLUMN)30 Raleigh(COLUMN)60(COLUMN)22 Rapid City(COLUMN)55(COLUMN)31 Reno(COLUMN)64(COLUMN)26 Richmond(COLUMN)61(COLUMN)26 St. Louis(COLUMN)50(COLUMN)35 St. Prbg.-Tampa(COLUMN)71(COLUMN)58 Salt Lake City(COLUMN)55(COLUMN)28 San Antonio(COLUMN)71(COLUMN)36 San Diego(COLUMN)78(COLUMN)53 San Fracisco(COLUMN)72(COLUMN)52 St. Ste. Marie(COLUMN)33(COLUMN)12 Seattle(COLUMN)57(COLUMN)39 Shreveport(COLUMN)73(COLUMN)41 Sioux Falls(COLUMN)32(COLUMN)11 Spokane(COLUMN)49(COLUMN)27 Syracuse(COLUMN)44(COLUMN)31 Tucson(COLUMN)74(COLUMN)44 Tulsa(COLUMN)68(COLUMN)44 Washington(COLUMN)54(COLUMN)31 Wichita(COLUMN)70(COLUMN)38(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Tmp. Aberdeen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)41 Amsterdam(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)45 Ankara(COLUMN)clear(COLUMN)3 p.m.(COLUMN)63 Athens(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)59 Auckland(COLUMN)clear(COLUMN)midnight(COLUMN)63 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)39 Birmingham(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)39 Brussels(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)48 Cairo(COLUMN)clear(COLUMN)2 p.m.(COLUMN)86 Casablanca(COLUMN)cloudy(COLUMN)noon(COLUMN)59 Copenhagen(COLUMN)snow(COLUMN)1 p.m.(COLUMN)39 Dublin(COLUMN)rain(COLUMN)1 p.m.(COLUMN)39 Geneva(COLUMN)clear(COLUMN)1 p.m.(COLUMN)45 Hong Kong(COLUMN)clear(COLUMN)8 p.m.(COLUMN)61 Lisbon(COLUMN)pt. cldy.(COLUMN)noon(COLUMN)52 London(COLUMN)clear(COLUMN)1 p.m.(COLUMN)48 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)48 Malta(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)55 Manila(COLUMN)pt. cldy.(COLUMN)8 p.m.(COLUMN)81 Moscow(COLUMN)clear(COLUMN)3 p.m.(COLUMN)14 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)75 Nice(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)54 Oslo(COLUMN)snow(COLUMN)1 p.m.(COLUMN)18 Paris(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)45 Peking(COLUMN)clear(COLUMN)8 p.m.(COLUMN)16 Rome(COLUMN)clear(COLUMN)1 p.m.(COLUMN)55 Saigon(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)79 Sofia(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)54 Stockholm(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)28 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)73 Tel Aviv(COLUMN)clear(COLUMN)2 p.m.(COLUMN)84 Tokyo(COLUMN)rain(COLUMN)9 p.m.(COLUMN)41 Tunis(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)59 Vienna(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)36 Warsaw(COLUMN)cloudy$1 p.m.(COLUMN)30(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)H.(COLUMN)L. Calgary(COLUMN)clear(COLUMN)46(COLUMN)27 Edmonton(COLUMN)pt. cloudy(COLUMN)41(COLUMN)21 Montreal(COLUMN)snow(COLUMN)37(COLUMN)27 Ottawa(COLUMN)snow(COLUMN)39(COLUMN)25 Regina(COLUMN)cloudy(COLUMN)30(COLUMN)10 Toronto(COLUMN)clear(COLUMN)36(COLUMN)25 Vancouver(COLUMN)pt. cloudy(COLUMN)52(COLUMN)32 Winnipeg(COLUMN)clear(COLUMN)23(COLUMN)-9(END TABLE)