Washington: Today - Sunny, high ner 90, low near 60. The chance of rain is near zero. Wednesday - Sunny, high near 90.

Maryland and Virginia: Today - Sunny, highs ranging from the 70s to near 90, lows in the 50s. Wednesday - Sunny, highs ranging from the 70s to near 90.

West Virginia: Today - Sunny, highs in the 80s, lows in the 50s. Wednesday - Sunny, highs in the 80s.

Lower Potomac and Chesapeake Bay: Today - Fair, with visibility of more than 5 miles. Wind will be from the west at from 10 to 70 knots. Waves in unprotected waters will be near 2 feet.

Extended Area Forecast for Thursday through Saturday: Fair through the period. Highs will be in the 80s, lows in the 50s. Normal Washington temperatures for the period are a high of 67 and low of 48.

The Nation Yesterday: A high pressure area off the South Atlantic Coast continued to feed warm southerly winds into much of the eastern third of the nation. Temperatures reached the 80s in the midwest as far north as the Great Lakes and along the Atantic Coast as far north as New York. New England had seasonable temperatures ranging from the 40s in the north to the 60s in the south. Scattered thundershowers developed over the central and southern Rockies and spread into the High Plains. A few severe thunderstorms were noted in Colorado, while a tornado was reported south of Colorado Springs. Precipitation around the country was limited to a few showers in north Idaho, northwest Montana and over southern Florida.

The National Weather Forecast for Today - Showers will remain over the central Rockies, while showers and thundershowers develop from the upper Mississippi Valley across the central plains into Oklahoma and northern Texas. There will also be a chance of showers in upper Michigan. Most other areas of the nation will have clear or partly cloudy skies. Temperatures will be unseasonably warm from the Ohio Valley into the middle Atlantic states, the Carolina and southern New England. It will be cool over the central Rockies and west central Plains, but the rest of the country will have mild weather.

Almanic Data for Today - Sun rises 5:37 a.m., sets 6:42 p.m.; moon rises 2:17 a.m., sets 1:21 p.m. Tides: High 3:03 a.m. and 3:30 p.m., low 9:48 a.m. and 10:18 p.m. 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); Solomons Island (6 1/2); Point Lookout (7).

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The Council of Governments' Air Quality Index for yesterday showed the high reading in the Washington area during the 2 p.m. to 3 p.m. period was 90 for the pollutant, photochemical oxidants. Index values between 75 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 5 feet.

Washington data at 7 p.m. (EST) yesterday: Highest temperature since 7 a.m. yesterday, 85 degrees at 2:48 p.m. Lowest temperature since midnight, 45 degrees at 4:10 a.m. Deficiency of temperature since April 1, 7 degrees. Deficiency of temperature since Jan. 1, 26 degrees. Record high temperature for today, 83 degrees in 1965. Record low temperature for today, 24 degrees in 1874. Relative humidity: Maximum, 89 per cent at 6 a.m.; Minimum, 35 per cent at 3 p.m. Excess of precipitation since April 1, .17 inches. Deficiency of precipitation since Jan. 1, 3.90 inches. Highest observed wind since 7 a.m. 14 miles per hour from the south at 4 p.m. Peak gust since 7 a.m., 20 miles per hour from the southwest at 5:38 p.m. Temperature Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid.(COLUMN)53(COLUMN)64 1 a.m.(COLUMN)51(COLUMN)71 2 a.m.(COLUMN)49(COLUMN)83 3 a.m.(COLUMN)48(COLUMN)83 4 a.m.(COLUMN)49(COLUMN)83 5 a.m.(COLUMN)48(COLUMN)86 6 a.m.(COLUMN)47(COLUMN)89 7 a.m.(COLUMN)49(COLUMN)86 8 a.m.(COLUMN)55(COLUMN)72 9 a.m.(COLUMN)59(COLUMN)64 10 a.m.(COLUMN)64(COLUMN)52 11 a.m.(COLUMN)49(COLUMN)49 12 noon(COLUMN)73(COLUMN)41 1 p.m.(COLUMN)78(COLUMN)39 2 p.m.(COLUMN)82(COLUMN)37 3 p.m.(COLUMN)85(COLUMN)35 4 p.m.(COLUMN)80(COLUMN)42 5 p.m.(COLUMN)77(COLUMN)45 6 p.m.(COLUMN)74(COLUMN)45 7 p.m.(COLUMN)68(COLUMN)50 8 p.m.(COLUMN)65(COLUMN)63 9 p.m.(COLUMN)68(COLUMN)55 10 p.m.(COLUMN)66(COLUMN)59 11 p.m.(COLUMN)63(COLUMN)67(END TABLE) Temperatures ending 8 p.m. (EST) yesterday:(TABLE) City(COLUMN)L.(COLUMN)H. Albany(COLUMN)25(COLUMN)64 Albuquerque(COLUMN)44(COLUMN)72 Amarillo(COLUMN)55(COLUMN)57 Anchorage(COLUMN)20(COLUMN)27 Asheville(COLUMN)41(COLUMN)80 Atlanta(COLUMN)50(COLUMN)83 Atlantic City(COLUMN)44(COLUMN)56 Austin(COLUMN)57(COLUMN)80 Baltimore(COLUMN)43(COLUMN)81 Billings(COLUMN)30(COLUMN)62 Birmingham(COLUMN)50(COLUMN)84 Bismarck(COLUMN)37(COLUMN)60 Boise(COLUMN)30(COLUMN)64 Boston(COLUMN)32(COLUMN)55 Brownsbille(COLUMN)66(COLUMN)84 Buffalo(COLUMN)45(COLUMN)67 Burlington(COLUMN)26(COLUMN)65 Casper(COLUMN)36(COLUMN)41 Charleston, S.C.(COLUMN)54(COLUMN)80 Charleston, W.V.(COLUMN)52(COLUMN)82 Charlotte(COLUMN)49(COLUMN)85 Cheyenne(COLUMN)37(COLUMN)40 Chicago(COLUMN)60(COLUMN)85 Cincinnati(COLUMN)49(COLUMN)82 Cleveland(COLUMN)54(COLUMN)81 Columbia, S.C.(COLUMN)45(COLUMN)89 Columbus(COLUMN)50(COLUMN)83 Dal.-Ft. Worth(COLUMN)60(COLUMN)82 Dayton(COLUMN)56(COLUMN)82 Denver(COLUMN)44(COLUMN)55 Des Moines(COLUMN)64(COLUMN)83 Detroit(COLUMN)56(COLUMN)37 Duluth(COLUMN)46(COLUMN)70 El Paso(COLUMN)47(COLUMN)81 Fairbanks(COLUMN)17(COLUMN)24 Fargo(COLUMN)38(COLUMN)65 Flagstaff(COLUMN)23(COLUMN)58 Great Falls(COLUMN)35(COLUMN)56 Hartford(COLUMN)26(COLUMN)59 Helena(COLUMN)22(COLUMN)59 Honolulu(COLUMN)71(COLUMN)84 Houston(COLUMN)66(COLUMN)78 Indianapolis(COLUMN)55(COLUMN)83 Jackson(COLUMN)48(COLUMN)82 Jacksonville(COLUMN)48(COLUMN)78 Juneau(COLUMN)38(COLUMN)41 Kansas City(COLUMN)61(COLUMN)80 Las Vegas(COLUMN)55(COLUMN)83 Little Rock(COLUMN)62(COLUMN)81 Los Angeles(COLUMN)53(COLUMN)69 Louisville(COLUMN)51(COLUMN)85 Memphis(COLUMN)56(COLUMN)84 Miami Beach(COLUMN)64(COLUMN)74 Midland(COLUMN)57(COLUMN)72 Milwaukee(COLUMN)46(COLUMN)83Mpls.-St. Paul 59(COLUMN)76 Nashville(COLUMN)51(COLUMN)83 New Orleans(COLUMN)50(COLUMN)82 New York(COLUMN)42(COLUMN)56 Norfolk(COLUMN)50(COLUMN)84 North Platte(COLUMN)53(COLUMN)77 Oklahoma City(COLUMN)51(COLUMN)77 Omaha(COLUMN)64(COLUMN)83 Orlando(COLUMN)54(COLUMN)80 Philadelphia(COLUMN)43(COLUMN)76 Phoenix(COLUMN)53(COLUMN)81 Pittsburgh(COLUMN)47(COLUMN)82 Portland, Mo.(COLUMN)18(COLUMN)40 Portland, Ore.(COLUMN)42(COLUMN)60 Providence(COLUMN)32(COLUMN)50 Raleigh(COLUMN)49(COLUMN)88 Rapid City(COLUMN)42(COLUMN)49 Reno(COLUMN)28(COLUMN)67 Richmond(COLUMN)43(COLUMN)90 St. Louis(COLUMN)61(COLUMN)85 St. Prbg.-T'mpa(COLUMN)58(COLUMN)81 Salt Lake City(COLUMN)40(COLUMN)60 San Antonio(COLUMN)49(COLUMN)62 San Diego(COLUMN)57(COLUMN)63 San Francisco(COLUMN)49(COLUMN)62 St. Ste. Marie(COLUMN)35(COLUMN)71 Seattle(COLUMN)44(COLUMN)58 Shreveport(COLUMN)70(COLUMN)81 Sioux Falls(COLUMN)52(COLUMN)76 Spokane(COLUMN)41(COLUMN)61 Syracuse(COLUMN)39(COLUMN)83 Topeka(COLUMN)56(COLUMN)82 Tucson(COLUMN)46(COLUMN)71 Tulsa(COLUMN)55(COLUMN)83 Washington(COLUMN)45(COLUMN)85 Wichita(COLUMN)52(COLUMN)79(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)48 Amsterdam(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)45 Ankara(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)72 Athens(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)63 Auckland(COLUMN)cloudy(COLUMN)mid.(COLUMN)61 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)36 Birmingham(COLUMN)rain(COLUMN)1 p.m.(COLUMN)45 Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)43 Cairo(COLUMN)clear(COLUMN)2 p.m.(COLUMN)95 Casablanca(COLUMN)pt. cldy.(COLUMN)noon(COLUMN)63 Copenhagen(COLUMN)snow(COLUMN)1 p.m.(COLUMN)30 Dublin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)50 Geneva(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)41 Hong Kong(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)72 Lisbon(COLUMN)clear(COLUMN)noon(COLUMN)59 London(COLUMN)clear(COLUMN)1 p.m.(COLUMN)50 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)55 Malta(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)61 Manila(COLUMN)clear(COLUMN)8 p.m.(COLUMN)22 Moscow(COLUMN)clear(COLUMN)3 p.m.(COLUMN)64 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)93 Nice(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55 Oslo(COLUMN)snow(COLUMN)1 p.m.(COLUMN)30 Paris(COLUMN)rain(COLUMN)1 p.m.(COLUMN)45 Peking(COLUMN)clear(COLUMN)8 p.m.(COLUMN)70 Rome(COLUMN)clear(COLUMN)1 p.m.(COLUMN)59 Salgon(COLUMN)clear(COLUMN)8 p.m.(COLUMN)82 Sofia(COLUMN)pt. cldy.(COLUMN)2 p.m.(COLUMN)43 Stockholm(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)37 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)64 Tel Aviv(COLUMN)haze(COLUMN)2 p.m.(COLUMN)88 Tokyo(COLUMN)clear(COLUMN)9 p.m.(COLUMN)59 Tunis(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)57 Vienna(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)43 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)37(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)Low(COLUMN)High Acapulco(COLUMN)pt. cldy.(COLUMN)70(COLUMN)92 Barbados(COLUMN)pt. cldy.(COLUMN)74(COLUMN)85 Calgary(COLUMN)clear(COLUMN)30(COLUMN)48 Cullacan(COLUMN)clear(COLUMN)51(COLUMN)94 Edmonton(COLUMN)clear(COLUMN)30(COLUMN)52 Havana(COLUMN)clear(COLUMN)70(COLUMN)81 Montego Bay(COLUMN)pt. cldy.(COLUMN)77(COLUMN)82 Mexico City(COLUMN)cloudy(COLUMN)41(COLUMN)73 Monterrey(COLUMN)clear(COLUMN)60(COLUMN)68 Montreal(COLUMN)clear(COLUMN)37(COLUMN)63 Nassau(COLUMN)clear(COLUMN)67(COLUMN)79 Ottawa(COLUMN)clear(COLUMN)30(COLUMN)68 Regina(COLUMN)clear(COLUMN)27(COLUMN)66 St. Kitts(COLUMN)clear(COLUMN)74(COLUMN)84 St. Thomas(COLUMN)clear(COLUMN)74(COLUMN)87 Toronto(COLUMN)cloudy(COLUMN)32(COLUMN)81 Vancouver(COLUMN)pt. cldy.(COLUMN)36(COLUMN)54 Veracruz(COLUMN)cloudy(COLUMN)73(COLUMN)82 Winnipeg(COLUMN)cloudy(COLUMN)30(COLUMN)64(END TABLE)