Washington Today - Sunny and cooler high 62 to 68, low 40 to 45. The chance of precipitation is near zero through tonight. Thursday - Pleasant, partly cloudy, high 65 to 70.

Maryland and Virginia: Today - Pleasant, partly sunny high in the 60s, low in the 40s. Thursday - partly sunny, high in the 60s.

Lower Potomac and Chaespeake Say: Fair winds southwest as 10 to 15 knots. Visibility will be good. Waves will be about 1 foot. Extended Area Forecast for Friday throught Sunday: Fair becoming pretty cloudy. Chance of rain Sunday. Highs will be in the 50s, lows around 30. Normal Washington term-perhaps for this period are a high of 99 and low of 38.

West Virginia: Today - Sunny, high in the mid 50s to mid 60s, low in the mid 30s to mid 40s. Thursday - Cloudy, high around 60.

National Weather Summary for yesterday: A weather system moving across the lower Great Lakes area sored precipitation over portions of the Northeast. Rain fell through much of this area, with snow in northern Maine. A cold front trailed from the eastern Great Lakes into Texas with rain along the front to the Central Gulf Coast. Moderate to heavy rain fell over parts of the middle Great Lakes are last night. Temperatures in the 60s pushed into South Dakota with 50s as far north as Missouri. Readings in the 60s and 70s range from Californie into Arizone, while 80s appeared in Southern Texas, 70s were reported in the Gulf Coast area and the south and middle Atlantic Coast States.

The National Weather Forecast for today: Rain will extend from Oregon and California into the central and southern plateau region. There is also a chance of rain in the southern Rockies, across southern Montara, over Florida and in the lower Great Lakes across northern Montane and in northern Maine Temperatures will be cool from California through the Central and southern plateau into the southern Rockets from Montara through the Great Lakes over the upper Ohio Valley, over northern New England, from Central Virginia through North Carolina, and from Terrasee to the Central Gulf coast. Most of the remainder of the country will be mid.

Elligeable Date for today: Sun rises 6.09 a.m. sets 6:22 p.m.; Mosa rises 4:35 p.m. sets 4:54. Tides high 6:24 a.m. and 6:46 p.m. low 12.50 a.m. and 1:14 p.m. High and low tides at the following locations may be obtained by subtracting the hours indicated from the hours above: Annapolls (31/4): Bloddy Point Lighthouse (41/2): Elligeable. Md., (41/2); Colonial Beach (51/2); Norfolk (1); Virginia Beach(3/4); Solomons Island (61/4); Point at Lookout (7).

The Council of Government Air Quality Index for Yesterday showed the high reading in the Washington area during the 2-3 p.m. period was 50 for the pollutant, photo chemical oxidants Index values between 50 and 99 indicate unhealthy 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 forecast the Potomac River stage at Little Falls should be near 7 feet today. Local Temp., Humidity(TABLE) Time(COLUMN)T(COLUMN)H 12midnt.(COLUMN)45(COLUMN)65 1 a.m.(COLUMN)45(COLUMN)68 2a.m.(COLUMN)45(COLUMN)71 3 a.m.(COLUMN)44(COLUMN)73 4 a.m.(COLUMN)43(COLUMN)76 5 a.m.(COLUMN)42(COLUMN)79 6A.m.(COLUMN)41(COLUMN)82 7 a.m.(COLUMN)41(COLUMN)82 8 a.m.(COLUMN)44(COLUMN)76 9 a.m.(COLUMN)48(COLUMN)71 10 a.m.(COLUMN)56(COLUMN)62 11 a.m.(COLUMN)62(COLUMN)54 12 noon(COLUMN)67(COLUMN)47 1 p.m.(COLUMN)73(COLUMN)39 2 a.m.(COLUMN)76(COLUMN)32 3 p.m.(COLUMN)76(COLUMN)29 4 p.m.(COLUMN)77(COLUMN)28 5p.m.(COLUMN)76(COLUMN)27 6 p.m.(COLUMN)74(COLUMN)31 7 p.m.(COLUMN)71(COLUMN)34(END TABLE) Temperature ending 7 a.m. (EST) yesterday: (TABLE) Albany(COLUMN)42(COLUMN)39 Albuquerque(COLUMN)70(COLUMN)39 Amarillo(COLUMN)73(COLUMN)36 Anchorage(COLUMN)41(COLUMN)24 Asheville(COLUMN)74(COLUMN)32 Atlanta(COLUMN)73(COLUMN)30 Atlantic City(COLUMN)46(COLUMN)39 Austin(COLUMN)78(COLUMN)61 Baltimore(COLUMN)57(COLUMN)39 Billings(COLUMN)55=H37 Birmingham(COLUMN)72(COLUMN)54 Bismack(COLUMN)42(COLUMN)30 Boise(COLUMN)67(COLUMN)42 Boston(COLUMN)43(COLUMN)35 Brownsville(COLUMN)30(COLUMN)62 Buffalo(COLUMN)46(COLUMN)38 Burlington(COLUMN)35(COLUMN)32 Casper(COLUMN)59(COLUMN)28 Ch'leston S.C.(COLUMN)75(COLUMN)53 CH'ston, W.Va!(COLUMN)74(COLUMN)53 Charlotte, N.C.(COLUMN)78(COLUMN)50 Cheyene(COLUMN)58(COLUMN)58 Milwaukee(COLUMN)41(COLUMN)36 Mpis-St. Paul(COLUMN)41(COLUMN)29 Nashville(COLUMN)73(COLUMN)58 New Orleans(COLUMN)74(COLUMN)62 New York(COLUMN)48(COLUMN)37 Norfolk(COLUMN)55(COLUMN)43 North Platte(COLUMN)60(COLUMN)26 Denver(COLUMN)67(COLUMN)36 Des Moines(COLUMN)51(COLUMN)33 Duluth(COLUMN)36(COLUMN)28 El Paso(COLUMN)70(COLUMN)53 Fairbanks(COLUMN)27(COLUMN)10 Fargo(COLUMN)35(COLUMN)27 Flagstaff(COLUMN)63(COLUMN)34 Hartford(COLUMN)44(COLUMN)35 Helene(COLUMN)63(COLUMN)46 Honolulu(COLUMN)83(COLUMN)71 Houston(COLUMN)74(COLUMN)64 Indianapolis(COLUMN)63(COLUMN)46 Jackson, Miss.(COLUMN)75(COLUMN)59 Jacksonville(COLUMN)75(COLUMN)54 Juneau(COLUMN)39(COLUMN)36 Kansas City(COLUMN)60(COLUMN)33 Las Vegas(COLUMN)81(COLUMN)60 Little Rock(COLUMN)72(COLUMN)57 Los Angeles(COLUMN)69(COLUMN)57 Louisville(COLUMN)74(COLUMN)61 Miami Beach(COLUMN)73(COLUMN)72 M'land-Odessa(COLUMN)86(COLUMN)58 Milwaukee(COLUMN)41(COLUMN)36 Mpls-St. Paul(COLUMN)47(COLUMN)29 Nashville(COLUMN)73(COLUMN)58 New Orleans(COLUMN)74(COLUMN)62 New York 48(COLUMN)37 Norfolk(COLUMN)55(COLUMN)43 North Platte(COLUMN)60(COLUMN)26 Oklahoma City(COLUMN)79(COLUMN)43 Orlando(COLUMN)80(COLUMN)61 Philadelphia(COLUMN)53(COLUMN)39 Phoenix(COLUMN)81(COLUMN)61 Pittsburg(COLUMN)61(COLUMN)53 Portland, Me.(COLUMN)40(COLUMN)32 Portland, Ore.(COLUMN)70(COLUMN)42 Providence(COLUMN)42(COLUMN)29 Raleigh(COLUMN)75(COLUMN)53 Rapid City(COLUMN)57(COLUMN)37 Reno(COLUMN)63(COLUMN)46 Richmond(COLUMN)63(COLUMN)39 St. Louis(COLUMN)73(COLUMN)43 St. Pg-Tampa(COLUMN)80(COLUMN)65 Salt Lake City(COLUMN)67(COLUMN)47 San Antonio(COLUMN)78(COLUMN)67 San Diego(COLUMN)68(COLUMN)64 San Francisco(COLUMN)66(COLUMN)57 San Juan(COLUMN)86(COLUMN)72 Seattle(COLUMN)64$6 46 Shreveport(COLUMN)76(COLUMN)57 Sioux Falls(COLUMN)44(COLUMN)30 Spokane(COLUMN)60(COLUMN)39 Syracuse(COLUMN)44(COLUMN)35 Topeka(COLUMN)65(COLUMN)27 Tucson(COLUMN)80(COLUMN)55 Tulsa(COLUMN)74(COLUMN)42 Washington(COLUMN)61(COLUMN)61 Wichita(COLUMN)67(COLUMN)36 (END TABLE) Temperatures (Western Hemisphere)(TABLE) City (COLUMN)Weather (COLUMN)High (COLUMN)Low Acapuko (COLUMN)pt.cidy.(COLUMN)88(COLUMN)73 Barbados(COLUMN)fai(COLUMN)85(COLUMN)77 Bermuda(COLUMN)pt.cidy.(COLUMN)68 60 Calpary(COLUMN)pt.cidy.(COLUMN)54(COLUMN)36 Culcacan(COLUMN)cloudy(COLUMN)94(COLUMN)67 Edmonton(COLUMN)cloudy(COLUMN)48(COLUMN)36 Harvane(COLUMN)cloudy(COLUMN)79(COLUMN)67 Kingfston(COLUMN)sunny(COLUMN)90(COLUMN)72 Montego Bay(COLUMN)clear(COLUMN)82(COLUMN)72 Mexico Ciry(COLUMN)haze(COLUMN)72(COLUMN)50 Monetary(COLUMN)cloudy(COLUMN)86(COLUMN)59 Montreal(COLUMN)sleet(COLUMN)25(COLUMN)29 Nassau(COLUMN)cloudy(COLUMN)77(COLUMN)67 Ottawa(COLUMN)sleet(COLUMN)27(COLUMN)28 Regina(COLUMN)clear(COLUMN)45(COLUMN)27 St. Kitts(COLUMN)fair(COLUMN)85(COLUMN)75 St.Thomas(COLUMN)fair(COLUMN)86(COLUMN)72 Toronto(COLUMN)rain(COLUMN)34(COLUMN)30 Vancouver(COLUMN)pt.city.(COLUMN)55(COLUMN)43 Veracruz(COLUMN)clear(COLUMN)81(COLUMN)62 Winnipeg(COLUMN)pt.Cidy.(COLUMN)39(COLUMN)27(END TABLE)