Washington: Today - Sunny, high near 60, low in low 40s.The chance of precipitation is near zero today and 10 per cent tonight. Saturday - Partly cloudy, high near 60.

Maryland and Virginia: Today - Sunny, highs from the 50s to the low 60s. Saturday - Partly cloudy, highs from the 50s to the low 60s. There is a chance of rain in the mountains on Saturday.

Lower Potomac and Chesapeake Bay: Today - Fair with visibility of more than 5 miles. Wind will be variable at less than 5 knots this morning, shifting to from the southeast this afternoon, then shifting to from the south at less than 10 knots tonight.

Extended Area Forecast for Sunday through Tuesday: Partly cloudy through the period, but a chance of rain on Sunday and late on Tuesday. Highs will be from the low 50s to near 60, lows in the 40s. Normal Washington temperatures for the period are high of 44 and a low of 28.

West Virginia: Today - Sunny, highs from the mid 50s to near 60, lows from the upper 30s to the mid 40s. Saturday - Partly cloudy, chance of showers, highs in the low 60s.

The National Weather Forecast for today - Rain will fall across the Pacific Northwest into the northern and central Rockies, where it will change to snow across the northern Plains into the upper Mississippi Valley and upper Great Lakes. Cloudy skies will extend from the rainy area across the remainder of the Great Lakes, into portions of the central Plains. Most of the nation will have sunny skies. Windy conditions are forecast for most of Montana and southward along the lee of the divide into Colorado. There will cool to cold temperatures west of the Continental Divide, while mild readings will hold in all areas east of the divide, except for New England.

Almanac Data for today - Sun rises 7:20 a.m., sets 4:48 p.m.; moon rises 11:43 a.m., sets 11:49 p.m.; tides: high 12:07 a.m. and 12:41 p.m. low 7:00 a.m. and 8:27 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 (5 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 p.m. to 3 p.m. period was 9 for the pollutant, photochemical oxidants. Index values between zero and 24 indicate good 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 be good.

The National Weather Service forecasts the Potomac River stage at Little Falls should be near 3.8 feet today. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 midn.(COLUMN)57(COLUMN) 96 1 a.m.(COLUMN)57(COLUMN) 97 2 a.m.(COLUMN)55(COLUMN)100 3 a.m.(COLUMN)56(COLUMN) 91 4 a.m.(COLUMN)54(COLUMN) 87 5 a.m.(COLUMN)52(COLUMN) 92 6 a.m.(COLUMN)51(COLUMN) 91 7 a.m.(COLUMN)51(COLUMN) 89 8 a.m.(COLUMN)49(COLUMN) 80 9 a.m.(COLUMN)48(COLUMN) 73 10 a.m.(COLUMN)48(COLUMN) 73 11 a.m.(COLUMN)50(COLUMN) 71 12 noon(COLUMN)54(COLUMN) 53 1 p.m.(COLUMN)54(COLUMN) 53 2 p.m.(COLUMN)54(COLUMN) 53 3 p.m.(COLUMN)54(COLUMN) 51 4 p.m.(COLUMN)52(COLUMN) 54 5 p.m.(COLUMN)49(COLUMN) 58 6 p.m.(COLUMN)46(COLUMN) 63 7 p.m.(COLUMN)46(COLUMN) 63(END TABLE) Temperatures ending 8 a.m. (EST) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN) 42(COLUMN) 35 Albuquerque(COLUMN) 58(COLUMN) 26 Amarillo(COLUMN) 69(COLUMN) 33 Anchorage(COLUMN) 25(COLUMN) 18 Asheville(COLUMN) 57(COLUMN) 43 Atlanta(COLUMN) 68(COLUMN) 43 Atlantic City(COLUMN) 54(COLUMN) 50 Austin(COLUMN) 73(COLUMN) 43 Baltimore(COLUMN) 59(COLUMN) 48 Billings(COLUMN) 49(COLUMN) 33 Birmingham(COLUMN) 62(COLUMN) 50 Bismarck(COLUMN) 41(COLUMN) 23 Boise(COLUMN) 53(COLUMN) 47 Boston(COLUMN) 51(COLUMN) 33 Brownsville(COLUMN) 77(COLUMN) 43 Buffalo(COLUMN) 44(COLUMN) 35 Burlington(COLUMN) 34(COLUMN) 22 Casper(COLUMN) 53(COLUMN) 43 Charleston, S.C.(COLUMN) 66(COLUMN) 59 Christon, W.Va.(COLUMN) 63(COLUMN) 42 Charlotte(COLUMN) 62(COLUMN) 51 Cheyenne(COLUMN) 53(COLUMN) 39 Chicago(COLUMN) 38(COLUMN) 33 Cincinnati(COLUMN) 55(COLUMN) 35 Cleveland(COLUMN) 46(COLUMN) 34 Columbia, S.C.(COLUMN) 63(COLUMN) 49 Columbus(COLUMN) 52(COLUMN) 34 Dal.-Ft. Worth(COLUMN) 68(COLUMN) 37 Dayton(COLUMN) 51(COLUMN) 35 Denver(COLUMN) 62(COLUMN) 38 Des Moines(COLUMN) 39(COLUMN) 33 Detroit(COLUMN) 37(COLUMN) 33 Duluth(COLUMN) 23(COLUMN) 20 El Paso(COLUMN) 65(COLUMN) 33 Fairbanks(COLUMN)-30(COLUMN)-36 Fargo(COLUMN) 29(COLUMN) 26 Flagstaff(COLUMN) 63(COLUMN) 24 Great Falls(COLUMN) 48(COLUMN) 40 Hartford(COLUMN) 35(COLUMN) 32 Helena(COLUMN) 50(COLUMN) 35 Honolulu(COLUMN) 85(COLUMN) 74 Houston(COLUMN) 68(COLUMN) 51 Indianapolis(COLUMN) 42(COLUMN) 32 Jackson, Miss.(COLUMN) 62(COLUMN) 51 Jacksonville(COLUMN) 79(COLUMN) 61 Juneau(COLUMN) 30(COLUMN) 22 Kansas City(COLUMN) 56(COLUMN) 38 Las Vegas(COLUMN) 67(COLUMN) 44 Little Rock(COLUMN) 60(COLUMN) 39 Los Angeles(COLUMN) 76(COLUMN) 52 Louisville(COLUMN) 57(COLUMN) 36 Memphis(COLUMN) 59(COLUMN) 34 Miami Beach(COLUMN) 80(COLUMN) 73 Midland-Odessa(COLUMN) 72(COLUMN) 38 Milwaukee(COLUMN) 35(COLUMN) 32 Mpls.-St. Paul(COLUMN) 28(COLUMN) 27 Nashville(COLUMN) 58(COLUMN) 41 New Orleans(COLUMN) 67(COLUMN) 40 New York(COLUMN) 56(COLUMN) 47 Norfolk(COLUMN) 65(COLUMN) 55 North Platte(COLUMN) 62(COLUMN) 23 Oklahoma City(COLUMN) 65(COLUMN) 37 Omaha(COLUMN) 53(COLUMN) 36 Orlando(COLUMN) 80(COLUMN) 70 Philadelphia(COLUMN) 54(COLUMN) 44 Phoenix(COLUMN) 73(COLUMN) 45 Pittsburgh(COLUMN) 56(COLUMN) 38 Portland, Maine(COLUMN) 33(COLUMN) 32 Portland, Ore.(COLUMN) 58(COLUMN) 47 Providence(COLUMN) 54(COLUMN) 47 Raleigh(COLUMN) 62(COLUMN) 47 Rapid City(COLUMN) 57(COLUMN) 34 Reno(COLUMN) 62(COLUMN) 42 Richmond(COLUMN) 61(COLUMN) 54 St. Louis(COLUMN) 38(COLUMN) 32 St. Pbg.-Tampa(COLUMN) 74(COLUMN) 67 Salt Lake City(COLUMN) 60(COLUMN) 47 San Antonio(COLUMN) 72(COLUMN) 35 San Diego(COLUMN) 71(COLUMN) 62 San Francisco(COLUMN) 60(COLUMN) 57 San Juan(COLUMN) 84(COLUMN) 74 St. Ste. Marie(COLUMN) 35(COLUMN) 33 Seattle(COLUMN) 54(COLUMN) 46 Shreveport(COLUMN) 64(COLUMN) 31 Sioux Falls(COLUMN) 38(COLUMN) 22 Spokane(COLUMN) 47(COLUMN) 37 Syracuse(COLUMN) 40(COLUMN) 34 Topeka(COLUMN) 59(COLUMN) 30 Tucson(COLUMN) 72(COLUMN) 46 Tulsa(COLUMN) 65(COLUMN) 35 Washington(COLUMN) 59(COLUMN) 51 Wichita(COLUMN) 61(COLUMN) 33(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberden(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)45 Amaterdam(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)46 Ankara(COLUMN)pt. cldy(COLUMN) 3 p.m.(COLUMN)30 Athens(COLUMN)cloudy(COLUMN) 2(COLUMN)52 Auckland(COLUMN)pt. cldy(COLUMN)midnight(COLUMN)59 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)45 Birmingham(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)52 Brussels(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)45 Casablanca(COLUMN)cloudy(COLUMN)noon(COLUMN)61 Copenhagen(COLUMN)fog(COLUMN) 1 p.m.(COLUMN)43 Dublin(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)50 Geneva(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)39 Hong Kong(COLUMN)pt. cldy(COLUMN) 8 p.m.(COLUMN)66 Lisbon(COLUMN)clear(COLUMN)noon(COLUMN)52 London(COLUMN)haze(COLUMN) 1 p.m.(COLUMN)46 Madrid(COLUMN)pt. cldy(COLUMN) 1 p.m.(COLUMN)48 Malta(COLUMN)rain(COLUMN) 1 p.m.(COLUMN)57 Manita(COLUMN)rain(COLUMN) 1 p.m.(COLUMN)57 Moscow(COLUMN)snow(COLUMN) 3 p.m.(COLUMN)12 New Delhi(COLUMN)cloudy(COLUMN) 5 p.m.(COLUMN)70 Nice(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)55 Oslo(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)28 Paris(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)46 Peking(COLUMN)clear(COLUMN) 8 p.m.(COLUMN)39 Rome(COLUMN)pt. cldy(COLUMN) 1 p.m.(COLUMN)54 Saigon(COLUMN)pt. cldy(COLUMN)8 p.m.(COLUMN)81 Sofia(COLUMN)pt. cldy(COLUMN) 2 p.m.(COLUMN)28 Stockholm(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)39 Sydney(COLUMN)pt. cldy(COLUMN)10 p.m.(COLUMN)68 Tel Aviv(COLUMN)rain(COLUMN) 2 p.m.(COLUMN)50 Tokyo(COLUMN)haze(COLUMN) 9 p.m.(COLUMN)48 Tunis(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)63 Vienna(COLUMN)rain(COLUMN) 1 p.m.(COLUMN)39 Warsaw(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)36(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)cloudy(COLUMN)90(COLUMN)72 Barbados(COLUMN)pt. cldy(COLUMN)86(COLUMN)73 Bermuda(COLUMN)cloudy(COLUMN)71(COLUMN)66 Bogota(COLUMN)cloudy(COLUMN)68(COLUMN)42 Calgary(COLUMN)clear(COLUMN)39(COLUMN)18 Edmonton(COLUMN)cloudy(COLUMN)23(COLUMN)12 Havana(COLUMN)pt. cldy(COLUMN)84(COLUMN)73 Kingston(COLUMN)pt. cldy(COLUMN)87(COLUMN)75 Montego Bay(COLUMN)rain(COLUMN)84(COLUMN)72 Mexico City(COLUMN)cloudy(COLUMN)61(COLUMN)48 Monterrey(COLUMN)clear(COLUMN)77(COLUMN)45 Montreal(COLUMN)cloudy(COLUMN)21(COLUMN)19 Nassau(COLUMN)pt. cldy(COLUMN)78(COLUMN)73 Ottawa(COLUMN)cloudy(COLUMN)25(COLUMN)23 Regina(COLUMN)fog(COLUMN)27(COLUMN)14 St. Kitts(COLUMN)pt. cldy(COLUMN)85(COLUMN)73 St. Thomas(COLUMN)fair(COLUMN)85(COLUMN)75 Toronto(COLUMN)cloudy(COLUMN)37(COLUMN)34 Vancouver(COLUMN)cloudy(COLUMN)50(COLUMN)43 Veracruz(COLUMN)cloudy(COLUMN)84(COLUMN)68 Winnipeg(COLUMN)cloudy(COLUMN)19(COLUMN)16(END TABLE)