Washington: Today - Partly cloudy and cold, high in the mid 30s, low in the teens. The chance of precipitation is near zero through tonight. Winds will be from the northeast at 10 to 20 knots. Friday - Cloudy, high in the mid 30s.

Maryland and Virginia: Today - Partly cloudy and cold, high in the 30s, low in the teens. Friday - Cloudy, with a chance of snow in the southeast, high in the lower 30s, low in the 20s.

Extended Area Forecast for Saturday through Monday - Fair and cold over the weekend with temperatures becoming milder on Monday with a chance of snow or rain. Highs will average in the 30s, lows in the 20s. Normal Washington temperatures for the period are a high of 45 and a low of 28.

Lower Potomac and Chesapeake Bay - Fair through tonight. Winds will be from the northeast at 10 to 20 knots. Waves will average near 2 feet in ice tree waters. Visibility will be 5 miles or more.

West Virginia: Today - Partly cloudy through Friday with highs both days ranging from the mid 20s to mid 30s, lows in the teens.

The National Weather Forecast for today - Snow will fall across the northern and central Plains, the middle Mississippi Valley, Oklahoma, Arkansas and western Tennessee. There will be rain in Florida and along the upper Texas Coast. Showers will fall along all of the Pacific Coast, extending inland to Arizona, Utah, Idaho and western Montana, with snow in the high elevations. It will be cloudy elsewhere in Texas and along the Gulf Coast. Most other areas will have clear or partly cloudy skies. Little temperature change is expected around the country, except for some slight warming in Texas and Louisiana. Cold temperatures will prevail from the northern Rockies into most areas east of the Rockies. From the central and southern Rockies to the Pacific coast it will be seasonably cool.

Almanac Data for today - Sun Rises 7:07 a.m., sets 5:39 p.m.; moon rises 8:10 a.m., sets 8:17 p.m.; Tides: high 9:24 a.m., and 9:47 p.m., low 3:41 a.m., and 4:03 p.m. High and low tides at the following locations may be obtained by subtracting the hours indicated from the tides above. Annapolis (1 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).

TR FOR ADD 4

The Council of Governments' Air Quality Index for yesterday showed the high reading in the Washington area during the 3 p.m. period was 31 for the pollutant, photochemical oxidants. Index values between 25 and 49 indicate fair air quality. When the index exceeds 100 the air is considered very unhealthy and individuals with lung, heart and eye ailments are 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 shoudl fall to 3.3 feet today.

Washington data at 7 p.m. (EST) yesterday: Highest temperature at 3:35 p.m. Lowest temperature since midnight, 21 degrees at 6:05 a.m. Deficiency of temperature since Feb. 1, 77 degrees. Deficiency of temperature since Jan. 1, 167 degrees. Record high temperature for today, 68 degrees in 1949. Record low temperature for today, - 7 degrees in 1899. Relative humidity: Maximum, 60 percent at 4 a.m.; Minimum, 48 percent at 1 p.m. 24 hour precipitation, none.Deficiency of precipitation since Feb. 1, .40 inches. Excess of precipitation since Jan. 1, 4.09 inches. Highest miles per hour from the northwest at 4 p.m. Peak gust since 7 a.m., 18 miles per hour from the northwest at 3:51 p.m. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 midn't(COLUMN)23(COLUMN)55 1 a.m.(COLUMN)23(COLUMN)55 2 a.m.(COLUMN)22(COLUMN)57 3 a.m.(COLUMN)22(COLUMN)57 4 a.m.(COLUMN)22(COLUMN)60 5 a.m.(COLUMN)22(COLUMN)60 7 a.m.(COLUMN)22(COLUMN)60 8 a.m.(COLUMN)22(COLUMN)60 9 a.m.(COLUMN)25(COLUMN)57 10 a.m.(COLUMN)29(COLUMN)51 11 a.m.(COLUMN)32(COLUMN)51 12 noon(COLUMN)34(COLUMN)49 1 p.m.(COLUMN)36(COLUMN)48 2 p.m.(COLUMN)37(COLUMN)48 3 p.m.(COLUMN)37(COLUMN)48 4 p.m.(COLUMN)37(COLUMN)46 5 p.m.(COLUMN)36(COLUMN)48 6 p.m.(COLUMN)34(COLUMN)52 7 p.m.(COLUMN)32(COLUMN)56 (END TABLE) Temperatures ending 7 a.m. (EST) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)28(COLUMN)16 Alburquerque(COLUMN)55(COLUMN)37 Amaarillo(COLUMN)30(COLUMN)22 Anchorage(COLUMN)17(COLUMN)05 Asheville(COLUMN)33(COLUMN)12 Atlanta(COLUMN)35(COLUMN)22 Atlantic City(COLUMN)35(COLUMN)22 Austin(COLUMN)42(COLUMN)29 Billings(COLUMN)37(COLUMN)13 Birmingham(COLUMN)30(COLUMN)19 Bismark(COLUMN)13(COLUMN)06 Boise(COLUMN)48(COLUMN)38 Boston(COLUMN)33(COLUMN)27 Brownsville(COLUMN)73(COLUMN)41 Buffalo(COLUMN)23(COLUMN)12 Burlington, Vt.(COLUMN)22(COLUMN)14 Casper(COLUMN)43(COLUMN)25 Charleston, S.C.(COLUMN)44(COLUMN)32 Charl'ton, W.V.(COLUMN)19(COLUMN)06 Charlotte(COLUMN)43(COLUMN)23 Cheyenne(COLUMN)41(COLUMN)23 Chicago(COLUMN)21(COLUMN)08 Cincinnatl(COLUMN)18(COLUMN)02 Cleveland(COLUMN)22(COLUMN)-1 Columbia, S.C.(COLUMN)40(COLUMN)22 Columbus(COLUMN)15(COLUMN)08 Dal.-Ft. Worth(COLUMN)33(COLUMN)24 Dayton(COLUMN)16(COLUMN)00 Denver(COLUMN)49(COLUMN)26 Des Moines(COLUMN)14(COLUMN)03 Detroit(COLUMN)21(COLUMN)04 Duluth(COLUMN)19(COLUMN)13 El Paso(COLUMN)62(COLUMN)47 Fairbanks(COLUMN)12(COLUMN)17 Fargo(COLUMN)11(COLUMN)00 Flagstaff(COLUMN)46(COLUMN)31 Great Falls(COLUMN)38(COLUMN)18 Hartford(COLUMN)31(COLUMN)19 Helena(COLUMN)36(COLUMN)29 Honolulu(COLUMN)85(COLUMN)65 Houston(COLUMN)42(COLUMN)34 Indianapolis(COLUMN)15(COLUMN)-2 Jackson(COLUMN)39(COLUMN)27 Jacksonville(COLUMN)42(COLUMN)26 juneau(COLUMN)39(COLUMN)32 Kansas City(COLUMN)20(COLUMN)12 Las Vegas(COLUMN)61(COLUMN)45 Little Rock(COLUMN)24(COLUMN)18 Los Angeles(COLUMN)62(COLUMN)52 Louisville(COLUMN)19(COLUMN)07 Memphis(COLUMN)31(COLUMN)22 Miami beach(COLUMN)68(COLUMN)60 Midland(COLUMN)46(COLUMN)28 Milwaukee(COLUMN)21(COLUMN)17 Mpls.St. Paul(COLUMN)18(COLUMN)04 Nashville(COLUMN)22(COLUMN)11 New Orleans(COLUMN)39(COLUMN)34 New York(COLUMN)31(COLUMN)22 Norfolk(COLUMN)34(COLUMN)23 North Plattee(COLUMN)11(COLUMN)09 Oklahoma City(COLUMN)28(COLUMN)20 Omaha(COLUMN)16(COLUMN)08 Orlando(COLUMN)57(COLUMN)39 Philadelphi(COLUMN)32(COLUMN)19 Phoenix(COLUMN)67(COLUMN)52 Pittsburgh(COLUMN)20(COLUMN)07 Portland, Me.(COLUMN)28(COLUMN)21 Portland, Or.(COLUMN)54(COLUMN)45 Providence(COLUMN)32(COLUMN)20 Raleigh(COLUMN)38(COLUMN)17 rapdi City(COLUMN)18(COLUMN)14 Reno(COLUMN)48(COLUMN)30 Richmond(COLUMN)36(COLUMN)16 St. Louis(COLUMN)19(COLUMN)07 St.Prbg.-Tampa(COLUMN)54(COLUMN)40 Salt Lake City(COLUMN)49(COLUMN)34 San Antonio(COLUMN)48(COLUMN)32 San Diego(COLUMN)65(COLUMN)59 San Francisco(COLUMN)62(COLUMN)52 San Juan(COLUMN)87(COLUMN)71 St. Ste. Marie(COLUMN)26(COLUMN)06 Seattle(COLUMN)52(COLUMN)43 Shreveport(COLUMN)32(COLUMN)27 Sioux Falls(COLUMN)12(COLUMN)06 Spokane(COLUMN)42(COLUMN)37 Syracuse(COLUMN)29(COLUMN)12 Topeka(COLUMN)21(COLUMN)10 Tucson(COLUMN)64(COLUMN)50 Tulsa(COLUMN)29(COLUMN)19 Washington(COLUMN)30(COLUMN)21 Wichita(COLUMN)20(COLUMN)17(END TABLE) Temperatures Abroad Yesterday(TABLE) Cith(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Amsterdam(COLUMN)pt.cldy(COLUMN)1 p.m.(COLUMN)30 Amsterday(COLUMN)pt.cldy.(COLUMN)1 p.m.(COLUMN)30 Ankara(COLUMN)rain(COLUMN)3 p.m.(COLUMN)45 Athens(COLUMN)pt.cldy.(COLUMN)2 p.m.(COLUMN)22 Auckland(COLUMN)cloudy(COLUMN)midnight(COLUMN)66 Berlin(COLUMN)snow(COLUMN)1 p.m.(COLUMN)32 Birmingham(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)34 Brussels(COLUMN)rain(COLUMN)1 p.m.(COLUMN)32 Casablanca(COLUMN)cloudy(COLUMN)noon(COLUMN)57 Copenhagen(COLUMN)clear(COLUMN)1 p.m.(COLUMN)25 Dublin(COLUMN)rain(COLUMN)1 p.m.(COLUMN)45 Geneva(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)34 Hong Kong(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)66 Lisbon(COLUMN)cloudy(COLUMN)noon(COLUMN)48 London(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)36 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)46 Malta(COLUMN)pt.cldy.(COLUMN)1 p.m.(COLUMN)52 Manila(COLUMN)pt.cldy.(COLUMN)8 p.m.(COLUMN)77 Moscow(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)16 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)63 Nice(COLUMN)clear(COLUMN)1 p.m.(COLUMN)54 Oslo(COLUMN)clear(COLUMN)1 p.m.(COLUMN)21(KEY OFF)(KEYWORD)LParis pt.cldy.(COLUMN)1 p.m.(COLUMN)39 Peking(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)25 Rome(COLUMN)clear(COLUMN)1 p.m.(COLUMN)50 Saigon(COLUMN)clear(COLUMN)8 p.m.(COLUMN)79 Sofia(COLUMN)clear(COLUMN)9 p.m.(COLUMN)36 Stockholm(COLUMN)pt.cldy.(COLUMN)1 p.m.(COLUMN)25 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)66 Tel Aviv(COLUMN)clear(COLUMN)2 p.m.(COLUMN)64 Tokyo(COLUMN)cloudy(COLUMN)9 p.m.(COLUMN)63 Tunis(COLUMN)rain(COLUMN)1 p.m.(COLUMN)46 Vienna(COLUMN)snow(COLUMN)1 p.m.(COLUMN)27 Warsaw(COLUMN)snow(COLUMN)10 p.m.(COLUMN)23(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)clear(COLUMN)86(COLUMN)72 Barbados(COLUMN)fair(COLUMN)84(COLUMN)75 Bermuda(COLUMN)pt.cldy.(COLUMN)69(COLUMN)59 Bogota(COLUMN)pt.cldy.(COLUMN)66(COLUMN)46 Calgary(COLUMN)snow(COLUMN)18(COLUMN)07 Culiacan(COLUMN)clear(COLUMN)82(COLUMN)50 Edmonton(COLUMN)snow(COLUMN)12(COLUMN)07 Havana(COLUMN)pt.cldy.(COLUMN)66(COLUMN)59 Kingston(COLUMN)pt.cldy.(COLUMN)86(COLUMN)73 Montego Bay(COLUMN)cloudy(COLUMN)79(COLUMN)69 Mexico City(COLUMN)fair(COLUMN)64(COLUMN)44 Monterrey(COLUMN)fog(COLUMN)77(COLUMN)46 Montreal(COLUMN)cloudy(COLUMN)23(COLUMN)14 Nassau(COLUMN)pt.cldy.(COLUMN)68(COLUMN)50 Ottaw(COLUMN)cloudy(COLUMN)27(COLUMN)14 Regina(COLUMN)cloudy(COLUMN)07(COLUMN)03 St. Kitts(COLUMN)pt!cldy.(COLUMN)87(COLUMN)71 St. Thomas(COLUMN)pt.cldy.(COLUMN)83(COLUMN)71 Toronto(COLUMN)clear(COLUMN)19(COLUMN)10 Vancouver(COLUMN)cloudy(COLUMN)52(COLUMN)45 Veracruz(COLUMN)cloudy(COLUMN)79(COLUMN)61 Winnipeg(COLUMN)clear(COLUMN)07(COLUMN)06(END TABLE)