• Tonight

    Apr 18

    Lo 44°

    Clear

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
  • Sun

    Apr 19

    53°Lo 41°

    Mostly sunny and cooler

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Mon

    Apr 20

    50°Lo 48°

    Breezy with periods of rain

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Tue

    Apr 21

    64°Lo 46°

    Cloudy, brief showers; warmer

    Low ragweed pollen levels
    • Precip
      60%
    • Wind
      Speed
      13 mph
    • Cloud
      Cover
      85%
    more
  • Wed

    Apr 22

    61°Lo 45°

    Mostly cloudy

    Ragweed Pollen Weather
    • Precip
      21%
    • Wind
      Speed
      16 mph
    • Cloud
      Cover
      41%
    more
Next Previous
Hi 60° RealFeel® 63° Precipitation 25%

Day

N

E

S

W

  • ESE 10 mph
  • Gusts: 21 mph

Times of clouds and sunshine; excessive dry weather will result in a high fire threat

  • Max UV Index: 6 (High)
  • Thunderstorms: 20%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 44° RealFeel® 36° Precipitation 13%

Night

N

E

S

W

  • WNW 14 mph
  • Gusts: 26 mph

Clear

  • Max UV Index: N/A
  • Thunderstorms: 20%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Boston Pollen Levels - April 18

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    High

  • Mold

    Pollen

    Low

Temperature History - Apr 18

more Historical Weather Data >
  Today Normal Record 4/18/2014
High 60° 57° 94° (1976) 42°
Low 44° 42° 26° (1887) 31°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:59 AM with 13:30 of sunlight, then sets at 7:29 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:58 AM with 13:35 of moolight, then sets at 7:33 PM

Boston Weather Report

2015 Boston Marathon Forecast: Rain and Wind in Store for Runners

April 18, 2015; 8:16 PM ET

The 119th Boston Marathon will take place on Monday, April 20, and runners set to take on the historic course will face cool and rainy conditions. more >

Sat. Pollen

Sat. Dust & Dander

Sat. Wind Maps