Washington: Today - Partly cloudy and breezy, high near 30, low mid to upper teens. Chance of snow 10 per cent through tonight. Saturday - Fair, high near 30.

Maryland and Virginia: Today - Partly cloudy, high near 20 west to low 30s in east, lows from near zero west to low teens east. Windy today with snow flurries likely in mountains of Maryland. Saturday - Fair, highs near 20 west to near 30 east.

Lower Potomac and Chespeake Bay: Today - Fair skies with northwesterly winds at 12 to 22 knots and visibility greater than 5 miles through tonight.

Extended Area Outlook: For Sunday through Tuesday - Fair skies Sunday and Tuesday with a chance of snow Monday. Highs should average in upper 20s to mid 30s, lows in upper teens. It should be cooler in mountains. Washington's normal temperature range for this time of year is from 44 to 28.

West Virginia: Today - Partly cloudy with chance of snow flurries through tonight, highs in 20s to mid 30s, lows from 5 to 15. Saturday - Partly cloudy, highs in 20s to mid 30s.

The National Weather Forecast for Today - Snow showers will fall over the northern and eastern sections of the Great Lakes and from the eastern Ohio Valley across the northern and central Appalachians into western New England. Scattered showers will move into Arizona and southern California. Most other areas will have clear or partly cloudy skies. Temperatures will be warmer over the southeast quarter of the nation and from Oregon into the west central Plains. Mild weather will prevail elsewhere in the central and western U.S. and it will continue cold in the northeast.

The Council of Government's Air Quality Index for yesterday showed the high reading in the Washington area during the 9 to 10 a.m. period was 13 for the pollutant, photochemical oxidants. Index values between 0 and 24 indicate good 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 remain about the same.

The National Weather Service forecasts that the Potomac River stage at Little Falls will remain near 3.3 feet today. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid.(COLUMN)24(COLUMN)62 1 a.m.(COLUMN)23(COLUMN)62 2 a.m.(COLUMN)23(COLUMN)56 3 a.m.(COLUMN)23(COLUMN)56 4 a.m.(COLUMN)23(COLUMN)55 5 a.m.(COLUMN)22(COLUMN)63 6 a.m.(COLUMN)22(COLUMN)66 7 a.m.(COLUMN)23(COLUMN)61 8 a.m.(COLUMN)24(COLUMN)57 9 a.m.(COLUMN)25(COLUMN)46 10 a.m.(COLUMN)25(COLUMN)44 11 a.m.(COLUMN)26(COLUMN)42 12 noon(COLUMN)28(COLUMN)46 1 p.m.(COLUMN)29(COLUMN)37 2 p.m.(COLUMN)31(COLUMN)37 3 p.m.(COLUMN)32(COLUMN)34 4 p.m.(COLUMN)32(COLUMN)33 5 p.m.(COLUMN)33(COLUMN)36(END TABLE) Temperatures ending 7 p.m. (EST) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)25(COLUMN) 18 Albuquerque(COLUMN)46(COLUMN) 26 Amarillo(COLUMN)51(COLUMN) 26 Anchorage(COLUMN)29(COLUMN) 19 Asheville(COLUMN)23(COLUMN) 12 Atlanta(COLUMN)27(COLUMN) 18 Atlantic City(COLUMN)22(COLUMN) 18 Austin(COLUMN)49(COLUMN) 29 Baltimore(COLUMN)27(COLUMN) 17 Billings(COLUMN)39(COLUMN) 29 Birmingham(COLUMN)25(COLUMN) 22 Bismarck(COLUMN)29(COLUMN) 00 Boise(COLUMN)41(COLUMN) 23 Boston(COLUMN)27(COLUMN) 22 Brownsville(COLUMN)60(COLUMN) 40 Buffalo(COLUMN)24(COLUMN) 18 Burlington, Vt.(COLUMN)20(COLUMN) 09 Casper(COLUMN)40(COLUMN) 23 Charleston. SC(COLUMN)34(COLUMN) 26 Charleston WVa(COLUMN)15(COLUMN) 09 Charlotte, NC(COLUMN)33(COLUMN) 18 Cheyenne(COLUMN)43(COLUMN) 18 Chicago(COLUMN)16(COLUMN) 12 Cincinnatl(COLUMN)17(COLUMN) 07 Cleveland(COLUMN)24(COLUMN)-01 Columbia, SC(COLUMN)38(COLUMN) 25 Columbus, Oh.(COLUMN)19(COLUMN) 02 Del.-Ft. Worth(COLUMN)47(COLUMN) 32 Dayton(COLUMN)17(COLUMN) 09 Denver(COLUMN)54(COLUMN) 23 Des Moines(COLUMN)30(COLUMN) 20 Detroit(COLUMN)27(COLUMN)-01 Duluth(COLUMN)16(COLUMN) 11 El Paso(COLUMN)62(COLUMN) 38 Fairbanks(COLUMN)04(COLUMN)-20 Fargo(COLUMN)22(COLUMN) 05 Flagstaff(COLUMN)57(COLUMN) 22 Great Falls(COLUMN)43(COLUMN) 34 Hartford(COLUMN)28(COLUMN) 13 Helena(COLUMN)35(COLUMN) 25 Honolulu(COLUMN)81(COLUMN) 65 Houston(COLUMN)50(COLUMN) 36 Indianapolis(COLUMN)15(COLUMN) 07 Jackson, Miss.(COLUMN)30(COLUMN) 24 Jacksonville(COLUMN)33(COLUMN) 21 Juneau(COLUMN)36(COLUMN) 34 Kansas City(COLUMN)35(COLUMN) 26 Las Vegas(COLUMN)70(COLUMN) 44 Little Rock(COLUMN)28(COLUMN) 33 Los Angeles(COLUMN)76(COLUMN) 59 Louisville(COLUMN)20(COLUMN) 16 Memphis(COLUMN)28(COLUMN) 23 Miami Beach(COLUMN)48(COLUMN) 32 Midland(COLUMN)68(COLUMN) 28 Milwaukee(COLUMN)16(COLUMN) 08 Mpls.-St. Paul(COLUMN)15(COLUMN) 08 Nashville(COLUMN)26(COLUMN) 21 New Orleans(COLUMN)33(COLUMN) 24 New York(COLUMN)26(COLUMN) 19 Norfolk(COLUMN)28(COLUMN)17 North Platte(COLUMN)41(COLUMN) 10 Oklahoma City(COLUMN)48(COLUMN) 23 Omaha(COLUMN)37(COLUMN) 14 Orlando(COLUMN)38(COLUMN) 20 Philadelphia(COLUMN)22(COLUMN) 14 Phoenix(COLUMN)76(COLUMN) 53 Pittsburgh(COLUMN)17(COLUMN) 03 Portland, Me.(COLUMN)16(COLUMN) 00 Portland, Ore.(COLUMN)56(COLUMN) 36 Providence(COLUMN)24(COLUMN) 16 Raleigh(COLUMN)30(COLUMN) 12 Rapid City(COLUMN)45(COLUMN) 18 Reno(COLUMN)51(COLUMN) 24 Richmond(COLUMN)31(COLUMN) 10 St. Louis(COLUMN)26(COLUMN) 19 St. Prba-T'mpa(COLUMN)40(COLUMN) 26 Salt Lake City(COLUMN)42(COLUMN) 21 San Antonio(COLUMN)50(COLUMN) 28 San Diego(COLUMN)74(COLUMN) 58 San Francisco(COLUMN)53(COLUMN) 47 San Juan, P.R.(COLUMN)90(COLUMN) 75 St. Ste. Marie(COLUMN)17(COLUMN) 13 Seattle(COLUMN)50(COLUMN) 38 Shreveport(COLUMN)46(COLUMN) 24 Sioux Falls(COLUMN)30(COLUMN) 08 Spokane(COLUMN)32(COLUMN) 29 Syracuse(COLUMN)24(COLUMN) 20 Tucson(COLUMN)74(COLUMN) 49 Tulsa(COLUMN)43(COLUMN) 30 Washington(COLUMN)30(COLUMN) 29 Wichita(COLUMN)49(COLUMN) 28(END TABLE) Temperatures Aboard Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)T. Aberdeen(COLUMN)rain(COLUMN) 1 p.m.(COLUMN)41 Amsterdam(COLUMN)fog(COLUMN) 1 p.m.(COLUMN)34 Ankara(COLUMN)cloudy(COLUMN) 3 p.m.(COLUMN)28 Athens(COLUMN)cloudy(COLUMN) 2 p.m.(COLUMN)43 Auckland(COLUMN)clear(COLUMN)midnight(COLUMN)63 Berlin(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)27 Birmingham(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)43 Brussels(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)37 Cairo(COLUMN)cloudy(COLUMN) 2 p.m.(COLUMN)61 Casablanca(COLUMN)cloudy(COLUMN) noon(COLUMN)63 Copenhagen(COLUMN)snow(COLUMN) 1 p.m.(COLUMN)28 Dublin(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)46 Geneva(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)37 Hong Kong(COLUMN)cloudy(COLUMN) 8 p.m.(COLUMN)61 Lisbon(COLUMN)cloudy(COLUMN) noon(COLUMN)57 London(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)45 Madrid(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)52 Malta(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)57 Manila(COLUMN)clear(COLUMN) 8 p.m.(COLUMN)75 Moscow(COLUMN)cloudy(COLUMN) 3 p.m.(COLUMN) 5 New Delhi(COLUMN)clear(COLUMN) 5 p.m.(COLUMN)64 Nice(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)50 Oslo(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)21 Paris(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)43 Peking(COLUMN)clear(COLUMN) 8 p.m.(COLUMN)23 Rome(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)52 Saigon(COLUMN)cloudy(COLUMN) 8 p.m.(COLUMN)79 Sofia(COLUMN)cloudy(COLUMN) 2 p.m.(COLUMN)27 Stockholm(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)27 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)68 Tel Aviv(COLUMN)rain(COLUMN) 2 p.m.(COLUMN)54 Tokyo(COLUMN)cloudy(COLUMN) 9 p.m.(COLUMN)39 Tunis(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)55 Vienna(COLUMN)haze(COLUMN) 1 p.m.(COLUMN)36 Warsaw(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)19(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)pt. cldy.(COLUMN)88(COLUMN)75 Barbados(COLUMN)clear(COLUMN)85(COLUMN)76 Bermuda(COLUMN)pt. cldy.(COLUMN)67(COLUMN)51 Calgary(COLUMN)clear(COLUMN)37(COLUMN)27 Edmonton(COLUMN)cloudy(COLUMN)30(COLUMN)21 Kingston(COLUMN)cloudy(COLUMN)82(COLUMN)72 Montago Bay(COLUMN)pt. cldy.(COLUMN)81(COLUMN)68 Mexico City(COLUMN)haze(COLUMN)58(COLUMN)45 Monterrey(COLUMN)pt. cldy.(COLUMN)59(COLUMN)38 Montreal(COLUMN)cloudy(COLUMN)23(COLUMN)16 Nassau(COLUMN)clear(COLUMN)63(COLUMN)50 Ottawa(COLUMN)pt. cldy.(COLUMN)21(COLUMN)16 Regina(COLUMN)cloudy(COLUMN)27(COLUMN) 3 St. Kitts(COLUMN)pt. cldy.(COLUMN)85(COLUMN)72 St. Thomas(COLUMN)pt. cldy.(COLUMN)83(COLUMN)73 Toronto(COLUMN)cloudy(COLUMN)25(COLUMN)18 Vancouver(COLUMN)fog(COLUMN)50(COLUMN)32 Veracruz(COLUMN)cloudy(COLUMN)67(COLUMN)50 Winnipeg(COLUMN)cloudy(COLUMN)27(COLUMN) 0(END TABLE)