• Tonight

    Mar 4

    Lo 21°

    Partly cloudy

    Asthma Weather
    • Hi
      RealFeel
      34°
    • UV
      2 - Low
    • Air Qual.
      Good
  • Thu

    Mar 5

    25°Lo 1°

    Rather cloudy and colder

    Beneficial weather for asthma
    • Hi
      RealFeel
      14°
    • UV
      2 - Low
    • Air Qual.
      Good
    more
  • Fri

    Mar 6

    24°Lo 8°

    Mostly sunny and very cold

    Beneficial weather for asthma
    • Hi
      RealFeel
      28°
    • UV
      4 - Moderate
    • Air Qual.
      Good
    more
  • Sat

    Mar 7

    31°Lo 14°

    A chance for snow or flurries

    Beneficial weather for asthma
    • Hi
      RealFeel
      23°
    • UV
      3 - Moderate
    • Cloud
      Cover
      76%
    more
  • Sun

    Mar 8

    34°Lo 20°

    Mostly cloudy

    Beneficial weather for asthma
    • Hi
      RealFeel
      30°
    • UV
      2 - Low
    • Cloud
      Cover
      85%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
9pm
10pm 11pm Thu
12am
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  9pm 10pm 11pm 12am 1am 2am 3am 4am
Forecast
Cloudy
Cloudy
Cloudy
Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Temp (°F) 32° 31° 30° 29° 28° 27° 27° 25°
RealFeel® 24° 22° 21° 20° 18° 17° 16° 14°
Humidity 68% 68% 68% 67% 66% 65% 64% 63%
   
  9pm 10pm 11pm 12am 1am 2am 3am 4am
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
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0%
 
0%
Snow
 
0%
 
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Ice
 
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  9pm 10pm 11pm 12am 1am 2am 3am 4am
Wind (mph) 8 W 9 WSW 9 W 10 W 10 W 10 WNW 10 WNW 12 WNW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 65% 60% 57% 52% 49% 45% 45% 45%
Dew Point 22° 21° 20° 20° 18° 17° 16° 14°
Middle Grid line 35 F Middle Grid line 30 F Middle Grid line 25 F Middle Grid line 20 F

Temperature History - Mar 4

more Historical Weather Data >
  Today Normal Record 3/4/2014
High 41° 40° 60° (1946) 29°
Low 21° 18° -10° (1982) -8°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:18 AM with 11:20 of sunlight, then sets at 5:38 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:54 PM with 13:06 of moolight, then sets at 6:00 AM

Loudon Weather Report

Boston: Snow, Freeze-up to Precede Thaw

March 4, 2015; 5:10 PM ET

Boston will lie on the northern edge of a 1,500-mile swath of snow, slippery roads and travel disruptions for a time on Thursday. more >

Making a Forecast: The Sixth Sense

Feb 16, 2015; 5:00 AM ET What steps go into making a forecast?

Wed. Air Quality

Wed. Asthma Risk

Wed. UV Index