Washington: Today - Cloudy and cool with a chance of occasional rain, high near 60, low in the 40s. The chance of rain is 40 percent today, 50 percent tonight. Winds will be easterly at 5 to 15 mon. Tuesday - Cloudy, windy and continued cool, high in the 50s.

Maryland and Virginia: Today - Cloudy with occasional rain spreading across the area, high in the 53s, lows mostly in the 40s. Tuesday - Cloudy with possible lingering showers highs in the 40s and 50s.

Extended Area Forecast for Wednesday through Friday - Partly cloudy Wednesday and Friday with a chance of showers in Thursday. Highs will average in the 60s, lows in the 40s. Normal Washington temperatures for the period are a high of 69 and a low 48.

Lower Potomac and Chesapeake Bay - increasing cloudiness with a chance of rain through tonight. Winds will become easterly at 10 to 15 knots. Waves will subside to 1 foot or less. Visibility will be less than 1 mile in rain.

The National Weather Forcast for today - Rain and rainshowers will reach from the eastern half of the Ohio Valley through eastern lower Michigan and the middle Atlantic Coast states into southern New England. Showers will also be scattered over portions of northwestern Oregon, Washington state and extreme southern Florida. Sunny skies will prevail from the southern Pacific Coast across the central and southern Rockies the Plains states from north Texas to southeastern South Dakota, the Mississippi Valley and the Gulf states. Cool temperatures are forecast from the Missouri Valley across the Mississippi Valley and eastward with seasonably mild temperatures over the remainder of the nation.

Almanac Data for today: The sunrises 7:15 a.m. sets 6:29 p.m.; moon rises 7:01 p.m., sets 7:32 am. Tides: high 8:55 a.m. and 9:20 p.m., low 3:11 a.m. and 3:29 p.m. High and low tides of the following locations may be obtained by subtracting the hours indicated from the hours above: Annapolls (3 1/4), Bloody Point Lighthouse (4 1/2), Deale, Md. (4 1/2), Colonial Beach (5 1/4), Norfolk (1), Virginia Beach (3/4), Solomons Island (6 1/4), Point Lookout (7). Local Temps., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid.(COLUMN)51(COLUMN)61 1 a.m.(COLUMN)50(COLUMN)63 2 a.m.(COLUMN)50(COLUMN)66 3 a.m.(COLUMN)48(COLUMN)74 4 a.m.(COLUMN)47(COLUMN)77 5 a.m.(COLUMN)46(COLUMN)77 6 a.m.(COLUMN)47(COLUMN)74 7 a.m.(COLUMN)47(COLUMN)47 8 a.m.(COLUMN)47(COLUMN)71 9 a.m.(COLUMN)47(COLUMN)71 10 a.m.(COLUMN)51(COLUMN)59 11 a.m.(COLUMN)54(COLUMN)47 12 noon(COLUMN)56(COLUMN)40 1 p.m.(COLUMN)53(COLUMN)36 2 p.m.(COLUMN)60(COLUMN)33 3 p.m.(COLUMN)50(COLUMN)33 4 p.m.(COLUMN)59(COLUMN)33 5 p.m.(COLUMN)58(COLUMN)34 6 p.m.(COLUMN)58(COLUMN)34 7 p.m.(COLUMN)54(COLUMN)38 (END TABLE)

The Council of Government's Air Quality Index for yesterday showed the high reading in the Washington area during the 9 a.m. period was 15 for the pollutant, photochemical oxidants. Index values between 0 and 25 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 remain good.

The National Weather Service forcasts the Potomac River stage at Little Falls should remain near 2.9 feet today. Temperatures ending 8 a.m. (EDT) yesterday(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)51(COLUMN)36 Albuquerque(COLUMN)73(COLUMN)44 AmarilLo(COLUMN)67(COLUMN)42 Anchorage(COLUMN)44(COLUMN)30 Asheville(COLUMN)61(COLUMN)37 Atlanta(COLUMN)67(COLUMN)36 Atlantic City(COLUMN)65(COLUMN)43 Austin(COLUMN)74(COLUMN)47 Baltimore(COLUMN)68(COLUMN)38 Billings(COLUMN)68(COLUMN)38 Birmingham(COLUMN)63(COLUMN)34 Bismarck(COLUMN)56(COLUMN)41 Boise(COLUMN)76(COLUMN)42 Boston(COLUMN)62(COLUMN)45 Brownsville(COLUMN)79(COLUMN)56 Buffalo(COLUMN)46(COLUMN)37 Burlington, Vt.(COLUMN)47(COLUMN)38 Casper(COLUMN)70(COLUMN)31 Charleston, S.C.(COLUMN)80(COLUMN)50 Charleston, W.V.(COLUMN)56(COLUMN)40 Charlotte(COLUMN)75(COLUMN)40 Cheyenne(COLUMN)64(COLUMN)40 Chicago(COLUMN)53(COLUMN)34 Cincinnati(COLUMN)50(COLUMN)33 Cleveland(COLUMN)55(COLUMN)41 Columbia, S.C.(COLUMN)80(COLUMN)47 Columbus, O.(COLUMN)53(COLUMN)37 Dal. Ft. Worth(COLUMN)75(COLUMN)51 Dayton(COLUMN)53(COLUMN)34 Denver(COLUMN)70(COLUMN)35 Des Moines(COLUMN)57(COLUMN)39 Detroit(COLUMN)54(COLUMN)37 Duluth(COLUMN)45(COLUMN)37 El Paso(COLUMN)76(COLUMN)48 Evansville(COLUMN)57(COLUMN)33 Fairbanks(COLUMN)27(COLUMN)15 Fargo(COLUMN)52(COLUMN)39 Flagstaff(COLUMN)76(COLUMN)30 Great Falls(COLUMN)73(COLUMN)34 Hartford(COLUMN)67(COLUMN)36 Helena(COLUMN)69(COLUMN)30 Houston(COLUMN)72(COLUMN)57 Indianapolis(COLUMN)54(COLUMN)31 Jackson(COLUMN)66(COLUMN)37 Jacksonville(COLUMN)80(COLUMN)46 Juneau(COLUMN)52(COLUMN)43 Kansas City(COLUMN)58(COLUMN)39 Las Vegas(COLUMN)95(COLUMN)56 Little Rock(COLUMN)65(COLUMN)45 Los Angeles(COLUMN)86(COLUMN)59 Louisville(COLUMN)56(COLUMN)35 Memphis(COLUMN)64(COLUMN)40 Miami Beach(COLUMN)82(COLUMN)73 Midland(COLUMN)67(COLUMN)45 Milwaukee(COLUMN)46(COLUMN)32 Mpls. St. Paul(COLUMN)51(COLUMN)39 Nashville(COLUMN)59(COLUMN)32 New Orleans(COLUMN)73(COLUMN)55 New York(COLUMN)68(COLUMN)42 Norfolk(COLUMN)80(COLUMN)52 North Platte(COLUMN)59(COLUMN)29 Oklahoma(COLUMN)68(COLUMN)42 Omaha(COLUMN)56(COLUMN)41 Orlando(COLUMN)81(COLUMN)59 Philadelphia(COLUMN)74(COLUMN)39 Phoenix(COLUMN)98(COLUMN)68 Pittsburgh(COLUMN)48(COLUMN)31 Portland, Me.(COLUMN)63(COLUMN)46 Portland, Ore.(COLUMN)75(COLUMN)45 Providence(COLUMN)64(COLUMN)44 Raleigh(COLUMN)75(COLUMN)44 Rapid City(COLUMN)62(COLUMN)40 Reno(COLUMN)83(COLUMN)46 Richmond(COLUMN)76(COLUMN)43 St. Louis(COLUMN)56(COLUMN)36 St. Prbg. Tampa(COLUMN)76(COLUMN)59 Salt Lake City(COLUMN)71(COLUMN)41 San Antonio(COLUMN)75(COLUMN)43 San Diego(COLUMN)84(COLUMN)63 San Juan(COLUMN)88(COLUMN)74 St. Ste. Marie(COLUMN)48(COLUMN)23 Seattle(COLUMN)71(COLUMN)48 Shreveport(COLUMN)71(COLUMN)41 Sioux Falls(COLUMN)54(COLUMN)40 Spokane(COLUMN)66(COLUMN)40 Syracuse(COLUMN)48(COLUMN)35 Topeka(COLUMN)60(COLUMN)35 Tucson(COLUMN)93(COLUMN)64 Tulsa(COLUMN)74(COLUMN)41 Washington(COLUMN)70(COLUMN)45 Wichita(COLUMN)66(COLUMN)36(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)rain(COLUMN)1 p.m.(COLUMN)48 Amsterdam(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55 Arkana(COLUMN)clear(COLUMN)3 p.m.(COLUMN)63 Athens(COLUMN)pt. cloudy(COLUMN)2 p.m.(COLUMN)70 Auckland(COLUMN)rain(COLUMN)midnite(COLUMN)54 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55 Birmingham(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)59 Bonn(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)68 Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55 Cacablanca(COLUMN)pt. cldy(COLUMN)noon(COLUMN)72 Copenhagen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Dublin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)54 Geneva(COLUMN)clear(COLUMN)1 p.m.(COLUMN)54 Hong Kong(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)70 Jerusalem(COLUMN)pt. cldy(COLUMN)2 p.m.(COLUMN)79 Lisbon(COLUMN)cloudy(COLUMN)noon(COLUMN)73 London(COLUMN)haze(COLUMN)1 p.m.(COLUMN)59 Madrid(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)68 Malta(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)72 Manila(COLUMN)pt. cldy(COLUMN)8 p.m.(COLUMN)82 Moscow(COLUMN)pt. cldy(COLUMN)3 p.m.(COLUMN)59 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)86 Nice(COLUMN)clear(COLUMN)1 p.m.(COLUMN)68 Oslo(COLUMN)clear(COLUMN)1 p.m.(COLUMN)50 Paris(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)57 Peking(COLUMN)clear(COLUMN)8 p.m.(COLUMN)52 Rome(COLUMN)clear(COLUMN)1 p.m.(COLUMN)72 Sofia(COLUMN)clear(COLUMN)2 p.m.(COLUMN)61 Stockholm(COLUMN)clear(COLUMN)1 p.m.(COLUMN)50 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)54 Tokyo(COLUMN)rain(COLUMN)9 p.m.(COLUMN)55 Tunis(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)75 Vienna(COLUMN)clear(COLUMN)1 p.m.(COLUMN)50 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)50(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)clear(COLUMN)90(COLUMN)73 Barbados(COLUMN)cloudy(COLUMN)87(COLUMN)78 Bermuda(COLUMN)pt. cldy(COLUMN)83(COLUMN)74 Calgary(COLUMN)clear(COLUMN)72(COLUMN)34 Edmonton(COLUMN)clear(COLUMN)61(COLUMN)32 Havana(COLUMN)pt. cldy(COLUMN)83(COLUMN)73 Kingston(COLUMN)cloudy(COLUMN)90(COLUMN)77 Montego Bay(COLUMN)pt. cldy(COLUMN)86(COLUMN)73 Mexico City(COLUMN)cloudy(COLUMN)61(COLUMN)48 Monterrey(COLUMN)pt. cldy(COLUMN)72(COLUMN)55 Montreal(COLUMN)cloudy(COLUMN)46(COLUMN)32 Nassau(COLUMN)pt. cldy(COLUMN)88(COLUMN)70 Ottawa(COLUMN)clear(COLUMN)63(COLUMN)25 St. Kitts(COLUMN)pt. cldy(COLUMN)91(COLUMN)78 Toronto(COLUMN)cloudy(COLUMN)46(COLUMN)34 Vancouver(COLUMN)clear(COLUMN)61(COLUMN)43 Vera Cruz(COLUMN)cloudy(COLUMN)81(COLUMN)73 Winnpeg(COLUMN)cloudy(COLUMN)45(COLUMN)39(END TABLE)