Washington: Today - Sunny, high in the low 80s, in the mid 40s. The chance of rain is near zero today and 10 per cent tonight. Friday - Sunny, high in the low 60s.

Maryland abd Virginia: Today - Sunny, highs from the 70s to the 40s. Friday - Sunny, high in the 70s.

Lower Potomac and Chesapeake Bay: Today - Fair, with visibility of more than 5 miles.Wind will be from the northeast at from 10 to 18 knots today, shifting to from the north at less than 10 knots tonight. Waves in unprotected waters will average near 2 feet. Extended Area Forecast for Saturday through Monday; Fair through the period, except for a chance of showers on Sunday night. Highs will be from the mid 70s to the mid 80s, lows from the mid 40s to the mid 50s. Normal Washington temperatures for the period are a high of 68 and a low of 46.

The National Weather Forecast for Today - Showers and occasional ward to include southern Minnethundershowers will extend from Texas through South Dakota, cast-sota, Wisconsin, lowa and Missouri. Showers will also extend along western New England into the upper Great Lakes and over southern Florida. Warm temperatures will extend from the Tennessee Valley and lower half of the Appalachians through the central Atlantic Coast.It will be cool from the sourthern half of the plains through the Rockies of the Pacific Coast. Elsewhere, temperatures will be seasonably mild.

Almanac Data for Today - Sunrises 5:34 a.m., sets 6:44 p.m.; moon rises 3:27 a.m. sets 3:22 p.m. Tides: High 5:11 a.m. and 5:37 p.m., low 11:45 a.m. and High and low tides at the following locations can be obtained by subtracting the hours indicated from the tides above.Annapolis (3 1/2); 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 Goverments' Air Quality Index for yesterday showed the high reading in the Washington area during the 2 p.m. to 3 p.m. period was 85 for the pollutant, photochemical oxidants. Index values between 50 and 99 indicate unhealthy 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 be near 2.5 feet.

Washington data at 7 p.m. (EST) yesterday: Highest temperature since 7 a.m. yesterday, 90 degrees at 2:30 p.m. Lowest temperature since midnight, 87 degrees at 6:15 a.m. Excess of temperature since April 1, 25 degrees. Excess of temperature since Jan. 1, 6 degrees. Record high temperature for today, 91 degrees in 1960. Record low temperature for today, 24 degrees in 1950. Relative humidity: Maximum, 90 per cent at 6 p.m. Deficiency of precipitation since April 1, 01 Inches. Deficiency of precipitation since Jan. 1, 4:08 inches. Highest observed wind since 7 a.m. 17 miles per hour from the northwest at 3:53 p.m. Peak gust since 7 a.m., 26 miles per hour from the west at 2 p.m. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid(COLUMN)64(COLUMN)63 1 a.m.(COLUMN)63(COLUMN)63 2 a.m.(COLUMN)61(COLUMN)70 3 a.m.(COLUMN)60(COLUMN)67 4 a.m.(COLUMN)56(COLUMN)90 5 a.m.(COLUMN)55(COLUMN)90 6 a.m.(COLUMN)55(COLUMN)87 7 a.m.(COLUMN)58(COLUMN)87 8 a.m.(COLUMN)63(COLUMN)70 9 a.m.(COLUMN)68(COLUMN)61 10 a.m.(COLUMN)74(COLUMN)62 11 a.m.(COLUMN)86(COLUMN)28 12 noon(COLUMN)88(COLUMN)24 1 p.m.(COLUMN)88(COLUMN)25 2 p.m.(COLUMN)88(COLUMN)25 3 p.m.(COLUMN)89(COLUMN)23 4 p.m.(COLUMN)89(COLUMN)21 5 p.m.(COLUMN)88(COLUMN)21 6 p.m.(COLUMN)87(COLUMN)20 7 p.m.(COLUMN)85(COLUMN)22(END TABLE) Temperatures ending 8 a.m. (EST) yesterday:(TABLE) City(COLUMN)H(COLUMN)L Albany(COLUMN)84(COLUMN)41 Amarillo(COLUMN)61(COLUMN)53 Anchorage(COLUMN)27(COLUMN)19 Asheville(COLUMN)81(COLUMN)43 Atlanda(COLUMN)84(COLUMN)53 Atlantic City(COLUMN)84(COLUMN)59 Austin(COLUMN)80(COLUMN)63 Baltimore(COLUMN)88(COLUMN)57 Billings(COLUMN)60(COLUMN)36 Birmingham(COLUMN)86(COLUMN)53 Bismrack(COLUMN)64(COLUMN)32 Boise(COLUMN)67(COLUMN)43 Boston(COLUMN)85(COLUMN)47 Brownsville(COLUMN)84(COLUMN)70 Buffalo(COLUMN)68(COLUMN)52 Burlington(COLUMN)66(COLUMN)40 Casper(COLUMN)47(COLUMN)26 Chaleston, S.C.(COLUMN)80(COLUMN)60 Charton, W Va(COLUMN)83(COLUMN)50 Charlotte(COLUMN)85(COLUMN)52 Cheyenne(COLUMN)42(COLUMN)29 Chicago(COLUMN)86(COLUMN)64 Cincinnati(COLUMN)84(COLUMN)51 Cleveland(COLUMN)82(COLUMN)53 Columbia, SC(COLUMN)83(COLUMN)50 Dal-Ft Worth(COLUMN)84(COLUMN)62 Dayton(COLUMN)83(COLUMN)56 Denver(COLUMN)51(COLUMN)40 Des Moines(COLUMN)79(COLUMN)55 Detroit(COLUMN)89(COLUMN)60 Duluth(COLUMN)51(COLUMN)36 El Paso(COLUMN)79(COLUMN)52 Fairbank(COLUMN)19(COLUMN)05 Fargo(COLUMN)58(COLUMN)26 Flastaff(COLUMN)63(COLUMN)25 Great Falls(COLUMN)60(COLUMN)44 Hartford(COLUMN)88(COLUMN)54 Helen(COLUMN)60(COLUMN)26 Honolulu(COLUMN)85(COLUMN)74 Houston(COLUMN)75(COLUMN)67 Indianapolis(COLUMN)84(COLUMN)52 Jackson Miss(COLUMN)83(COLUMN)51 Jacksonville(COLUMN)78(COLUMN)47 Juneau(COLUMN)44(COLUMN)35 Kansas City(COLUMN)79(COLUMN)58 Las Vegas(COLUMN)84(COLUMN)52 Little Rock(COLUMN)82(COLUMN)62 Louisville(COLUMN)85(COLUMN)53 Memphis(COLUMN)84(COLUMN)57 Miami Beach(COLUMN)74(COLUMN)69 Midland-Odessa(COLUMN)73(COLUMN)58 Milwaukee(COLUMN)82(COLUMN)57 Mpls.St. Paul(COLUMN)76(COLUMN)44 Nashville(COLUMN)82(COLUMN)52 New Orleans(COLUMN)81(COLUMN)55 New York(COLUMN)88(COLUMN)61 Norfolk(COLUMN)88(COLUMN)59 North Platte(COLUMN)64(COLUMN)34 Oklahoma City(COLUMN)77(COLUMN)60 Omaha(COLUMN)82(COLUMN)51 Orlando(COLUMN)79(COLUMN)62 Philadelphia(COLUMN)92(COLUMN)53 Phoenix(COLUMN)87(COLUMN)61 Pittsburgh(COLUMN)82(COLUMN)52 Portland, Maine(COLUMN)73(COLUMN)37 Portland, Ore(COLUMN)68(COLUMN)44 Providence(COLUMN)86(COLUMN)46 Raleigh(COLUMN)88(COLUMN)54 Rapid City(COLUMN)51(COLUMN)34 Reno(COLUMN)72(COLUMN)38 Richmond(COLUMN)92(COLUMN)56 St. Louis(COLUMN)85(COLUMN)63 St. Prbg-Tampa(COLUMN)82(COLUMN)62 Salt Lake City(COLUMN)63(COLUMN)38 San Antonio(COLUMN)78(COLUMN)65 San Diego(COLUMN)66(COLUMN)57 San Francisco(COLUMN)70(COLUMN)50 San Juan(COLUMN)83(COLUMN)72 St. Ste Marie(COLUMN)55(COLUMN)38 Seattle(COLUMN)63(COLUMN)47 Shreveport(COLUMN)81(COLUMN)50 Sloux Falls(COLUMN)75(COLUMN)50 Spokane(COLUMN)65(COLUMN)50 Syracuse(COLUMN)75(COLUMN)50 Topeka(COLUMN)81(COLUMN)59 Tucson(COLUMN)81(COLUMN)53 Tulsa(COLUMN)83(COLUMN)64 Washington(COLUMN)90(COLUMN)54 Wichita(COLUMN)77(COLUMN)57(END TABLE) Temperature Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp Aberdeen(COLUMN)clear(COLUMN)1 p.m.(COLUMN)46 Amsterdam(COLUMN)clear(COLUMN)1 p.m.(COLUMN)50 Ankara(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)46 Athens(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)59 Auckland(COLUMN)cloudy(COLUMN)mid(COLUMN)61 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Birmingham(COLUMN)clear(COLUMN)1 p.m.(COLUMN)54 Brussels(COLUMN)rain(COLUMN)1 p.m.(COLUMN)45 Cairo(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)72 Casablance(COLUMN)clear(COLUMN)noon(COLUMN)75 Copenhagen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)48 Dublin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Geneva(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Hong Kong(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)73 Lisbon(COLUMN)clear(COLUMN)noon(COLUMN)72 London(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)57 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)70 Malta(COLUMN)clear(COLUMN)1 p.m.(COLUMN)59 Manila(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)82 Moscow(COLUMN)clear(COLUMN)3 p.m.(COLUMN)46 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)95 Nice(COLUMN)clear(COLUMN)1 p.m.(COLUMN)61 Oslo(COLUMN)rain(COLUMN)1 p.m.(COLUMN)36 Paris(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)54 Paris(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)54 Peking(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)63 Rome(COLUMN)clear(COLUMN)1 p.m.(COLUMN)61 Salgon(COLUMN)clear(COLUMN)8 p.m.(COLUMN)79 Sofia(COLUMN)clear(COLUMN)2 p.m.(COLUMN)45 Stockholm(COLUMN)rain(COLUMN)1 p.m.(COLUMN)36 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)70 Tel Aviv(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)68 Tokyo(COLUMN)cloudy(COLUMN)9 p.m.(COLUMN)59 Tunis(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)61 Vienna(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)48 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)48(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)cloudy(COLUMN)88(COLUMN)73 Barbados(COLUMN)cloudy(COLUMN)82(COLUMN)71 Bermuda(COLUMN)cloudy(COLUMN)66(COLUMN)55 Bogota(COLUMN)pt.cldy(COLUMN)64(COLUMN)50 Calgary(COLUMN)cloudy(COLUMN)66(COLUMN)48 Cullacan(COLUMN)clear(COLUMN)93(COLUMN)59 Edmonton(COLUMN)cloudy(COLUMN)66(COLUMN)37 Havana(COLUMN)rain(COLUMN)78(COLUMN)68 Kingston(COLUMN)pt.cldy(COLUMN)88(COLUMN)75 Montego Bay(COLUMN)sunny(COLUMN)86(COLUMN)71 Monterrey(COLUMN)cloudy(COLUMN)78(COLUMN)64 Montreal(COLUMN)cloudy(COLUMN)63(COLUMN)41 Ottawa(COLUMN)pt.cldy(COLUMN)63(COLUMN)45 Regina(COLUMN)clear(COLUMN)59(COLUMN)28 St. Kitts(COLUMN)pt. cldy(COLUMN)85(COLUMN)71 St. Thomas(COLUMN)pt. cldy(COLUMN)83(COLUMN)73 Toronto(COLUMN)pt cldy(COLUMN)79(COLUMN)52 Vancouver(COLUMN)cloudy(COLUMN)54(COLUMN)41v.eracruz cloudy(COLUMN)82(COLUMN)69 Winnipeg(COLUMN)clear(COLUMN)64(COLUMN)25(END TABLE)