[TEXT OMITTED FROM SOURCE] cloudy, highs in mid 80s, lows near 60. Chance of rain is 10 per cent today, near zero tonight. Wednesday - Partly cloudy, high near 80.

Maryland and Virginia: Today - Chance of rain, highs in 80s, lows in 50s. Wednesday - Partly cloudy, highs in 70s.

Lower Potomac and Chesapeake Bay: Today - Partly cloudy skies through tonight with chance of morning showers. Visibility should range from poor in precipitation to good later in day. Winds should be westerly at 10 to 15 knots today, becoming northwesterly at near 10 knots tonight.

Extended Area Outlook: For Thursday through Saturday - Chance of rain late Thursday or Friday followed by fair skies Saturday. Highs should average near 80, lows in 60s. It should be cooler in mountains. Washington's normal temperature range for this time of year is from 78 to 59.

West Virginia: Today - Partly cloudy with chance of rain, highs in 70s, lows in upper 40s to mid 50s. Wednesday - Sunny, highs in mid 60s to mid 70s.

The National Weather Forecast for Today - Showers and thunderstorms will be scattered over the lower Great Lakes region, the Atlantic Coast states and the eastern Gulf Coast region. Scattered showers and cool temperatures are likely over the northern Pacific Coast region and northern intermountain states. It will be mid over most of the nation exceed for warm readings in the desert southwest, Gulf Coast region and southern Atlantic Coast states.

The Council of Governments' Air Quality Index for yesterday showed the high reading in the Washington area during the 2 to 3 p.m. today was 95 for the pollutant, photochemical 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 [TEXT OMITTED FROM SOURCE]

Washington: Today - Partly forecasts the Potomac River stage at Little Falls should remain near 2.6 feet through today.

Almanac Data for Sept. 20, 1977. Sun rises 6:54 a.m., sets 7:09 p.m.; Moon rises 2:31 p.m., sets 12:51 a.m. Tides: High 1:52 a.m. and 2:21 p.m. low 9:04 a.m. and 9:17 p.m. High and low tides at the following locations can 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 (6); Point Lookout (7); Pollen Count 56 Ragweed (note: More than 7 is considered undersirable.) Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 midnight(COLUMN)77(COLUMN)78 1 a.m.(COLUMN)75(COLUMN)81 2 a.m.(COLUMN)74(COLUMN)84 3 a.m.(COLUMN)73(COLUMN)86 4 a.m.(COLUMN)72(COLUMN)87 5 a.m.(COLUMN)70(COLUMN)92 6 a.m.(COLUMN)70(COLUMN)89 7 a.m.(COLUMN)70(COLUMN)88 8 a.m.(COLUMN)70(COLUMN)86 9 a.m.(COLUMN)74(COLUMN)78 10 a.m.(COLUMN)81(COLUMN)62 11 a.m.(COLUMN)85(COLUMN)58 12 noon(COLUMN)86(COLUMN)52 1 p.m.(COLUMN)88(COLUMN)49 2 p.m.(COLUMN)91(COLUMN)49 3 p.m.(COLUMN)89(COLUMN)49 4 p.m.(COLUMN)88(COLUMN)52 5 p.m.(COLUMN)87(COLUMN)62 6 p.m.(COLUMN)85(COLUMN)66(END TABLE) Temperatures ending 8 a.m. (EDT) Yesterday(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)74(COLUMN)64 Albuquerque(COLUMN)80(COLUMN)55 Amarillo(COLUMN)83(COLUMN)52 Anchorage(COLUMN)87(COLUMN)35 Asheville(COLUMN)82(COLUMN)61 Atlanta(COLUMN)86(COLUMN)69 Atlantic City(COLUMN)81(COLUMN)72 Austin(COLUMN)99(COLUMN)76 Baltimore(COLUMN)90(COLUMN)67 Billings(COLUMN)67(COLUMN)46 Birmingham(COLUMN)87(COLUMN)71 Bismarck(COLUMN)84(COLUMN)45 Boise(COLUMN)79(COLUMN)67 Boston(COLUMN)80(COLUMN)65 Brownsville(COLUMN)95(COLUMN)75 Buffalo(COLUMN)71(COLUMN)61 Burlington, Vt.(COLUMN)73(COLUMN)64 Casper(COLUMN)70(COLUMN)36 Charleston, S.C.(COLUMN)89(COLUMN)74 Charleston, W. Va.(COLUMN)85(COLUMN)67 Charlotte, N.C.(COLUMN)87(COLUMN)69 Cheyenne(COLUMN)70(COLUMN)39 Chicago(COLUMN)20(COLUMN)67 Cincinnati(COLUMN)86(COLUMN)68 Cleveland(COLUMN)81(COLUMN)62 Columbia, S.C.(COLUMN)89(COLUMN)68 Columbus, Ohio(COLUMN)84(COLUMN)67 Dal.-Ft. Worth(COLUMN)95(COLUMN)72 Dayton(COLUMN)83(COLUMN)67 Denver(COLUMN)75(COLUMN)45 Des Moines(COLUMN)82(COLUMN)57 Detroit(COLUMN)79(COLUMN)63 Duluth(COLUMN)79(COLUMN)50 El Paso(COLUMN)91(COLUMN)60 Fairbanks(COLUMN)45(COLUMN)43 Fargo(COLUMN)58(COLUMN)49 Flagstaff(COLUMN)73(COLUMN)37 Great Falls(COLUMN)69(COLUMN)51 Hartford(COLUMN)82(COLUMN)63 Helena(COLUMN)70(COLUMN)44 Honolulu(COLUMN)88(COLUMN)77 Houston(COLUMN)91(COLUMN)78 Indianapolis(COLUMN)84(COLUMN)66 Jackson, Miss.(COLUMN)87(COLUMN)72 Jacksonville(COLUMN)91(COLUMN)70 Juneau(COLUMN)54(COLUMN)47 Kansas City(COLUMN)83(COLUMN)53 Las Vegas(COLUMN)89(COLUMN)62 Little Rock(COLUMN)89(COLUMN)66 Los Angeles(COLUMN)79(COLUMN)63 Louisville(COLUMN)87(COLUMN)70 Memphis(COLUMN)92(COLUMN)70 Miami Beach(COLUMN)85(COLUMN)75 Midland(COLUMN)97(COLUMN)68 MIlwaukee(COLUMN)78(COLUMN)63 Mpls.-St. Paul(COLUMN)74(COLUMN)55 Nashville(COLUMN)89(COLUMN)73 New Orleans(COLUMN)90(COLUMN)73 New York(COLUMN)83(COLUMN)68 Norfolk(COLUMN)87(COLUMN)73 North Platte(COLUMN)77(COLUMN)36 Oklahoma City(COLUMN)94(COLUMN)58 Omoha(COLUMN)75(COLUMN)48 Orlando(COLUMN)92(COLUMN)75 Philadelphia(COLUMN)86(COLUMN)69 Phoenix(COLUMN)68(COLUMN)70 Pittsburgh(COLUMN)80(COLUMN)62 Portland, Me.(COLUMN)72(COLUMN)58 Portland, Ore.(COLUMN)64(COLUMN)59 Providence(COLUMN)80(COLUMN)66 Raleigh(COLUMN)87(COLUMN)68 Rapid City(COLUMN)66(COLUMN)39 Reno(COLUMN)76(COLUMN)44 Richmond(COLUMN)91(COLUMN)70 St. Louis(COLUMN)84(COLUMN)62 St. Prbg-Tampa(COLUMN)91(COLUMN)73 Salt Lake City(COLUMN)74(COLUMN)55 San Antonio(COLUMN)92(COLUMN)75 San Diego(COLUMN)77(COLUMN)66 San Francisco(COLUMN)72(COLUMN)62 San Juan, P.R.(COLUMN)84(COLUMN)75 St. Ste. Marie(COLUMN)66(COLUMN)54 Seattle(COLUMN)63(COLUMN)57 Shreveport(COLUMN)94(COLUMN)68 Sioux Falls(COLUMN)68(COLUMN)45 Spokane(COLUMN)69(COLUMN)51 Syracuse(COLUMN)74(COLUMN)65 Topeka(COLUMN)88(COLUMN)55 Tucson(COLUMN)93(COLUMN)68 Tulsa(COLUMN)91(COLUMN)59 Washington(COLUMN)89(COLUMN)70 Wichita(COLUMN)84(COLUMN)57(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)50 Amsterdam(COLUMN)clear(COLUMN)1 p.m.(COLUMN)59 Ankara(COLUMN)clear(COLUMN)3 p.m.(COLUMN)81 Athens(COLUMN)clear(COLUMN)2 p.m.(COLUMN)81 Auckland(COLUMN)clear(COLUMN)midnight(COLUMN)52 Berlin(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)54 Birmingham(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)54 Brussels(COLUMN)clear(COLUMN)1 p.m.(COLUMN)57 Cairo(COLUMN)clear(COLUMN)2 p.m.(COLUMN)86 Casablanca(COLUMN)clear(COLUMN)noon(COLUMN)73 Copenhagen(COLUMN)clear(COLUMN)1 p.m.(COLUMN)64 Dublin(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)57 Geneva(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)52 Hong Kong(COLUMN)pt. cldy(COLUMN)8 p.m.(COLUMN)81 Lisbon(COLUMN)cloudy(COLUMN)noon(COLUMN)70 London(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)55 Madrid(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)66 Malta(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)82 Manila(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)84 Moscow(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)45 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)90 Nice(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)68 Oslo(COLUMN)clear(COLUMN)1 p.m.(COLUMN)63 Paris(COLUMN)clear(COLUMN)1 p.m.(COLUMN)59 Peking(COLUMN)clear(COLUMN)8 p.m.(COLUMN)52 Rome(COLUMN)rain(COLUMN)1 p.m.(COLUMN)57 Saigon(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)81 Sofia(COLUMN)clear(COLUMN)2 p.m.(COLUMN)75 Stockholm(COLUMN)clear(COLUMN)1 p.m.(COLUMN)57 Sydney(COLUMN)rain(COLUMN)10 p.m.(COLUMN)57 Tel Aviv(COLUMN)clear(COLUMN)2 p.m.(COLUMN)86 Tokyo(COLUMN)rain(COLUMN)9 p.m.(COLUMN)73 Tunis(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)93 Vienna(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)46 Warsaw(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)55(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)H.(COLUMN)L. Acapulco(COLUMN)pt. cldy(COLUMN)88(COLUMN)77 [LINE ILLEGIBLE] Bermuda(COLUMN)fair(COLUMN)84(COLUMN)78 Bogota(COLUMN)pt. cldy.(COLUMN)70(COLUMN)50 Balgary(COLUMN)cloudy(COLUMN)63(COLUMN)46 Edmonston(COLUMN)clear(COLUMN)61(COLUMN)30 Havana(COLUMN)fair(COLUMN)90(COLUMN)74 Kingston(COLUMN)pt. cldy(COLUMN)90(COLUMN)70 Montego Bay(COLUMN)pt. cldy(COLUMN)88(COLUMN)76 Mexico City(COLUMN)haze(COLUMN)81(COLUMN)55 Monterrey(COLUMN)fair(COLUMN)90(COLUMN)72 Montreal(COLUMN)fog(COLUMN)70(COLUMN)54 Nassau(COLUMN)fair(COLUMN)90(COLUMN)75 Ottawa(COLUMN)cloudy(COLUMN)68(COLUMN)57 Regina(COLUMN)clear(COLUMN)54(COLUMN)37 St. Kitts(COLUMN)fair(COLUMN)89(COLUMN)77 Toronto(COLUMN)cloudy(COLUMN)68(COLUMN)55 Vancouver(COLUMN)rain(COLUMN)66(COLUMN)57 Veracruz(COLUMN)fair(COLUMN)88(COLUMN)72 Winnipeg(COLUMN)drizzle(COLUMN)55(COLUMN)46(END TABLE)