• Today

    Sep 21

    82°Lo 61°

    A passing afternoon shower

    Low ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
  • Mon

    Sep 22

    73°Lo 51°

    Breezy with clouds and sun

    Low ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Tue

    Sep 23

    69°Lo 53°

    Mostly sunny and pleasant

    Low ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Wed

    Sep 24

    66°Lo 49°

    A full day of sunshine

    Low ragweed pollen levels
    • Precip
      4%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      0%
    more
  • Thu

    Sep 25

    70°Lo 53°

    Plenty of sunshine

    Ragweed Pollen Weather
    • Precip
      8%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      0%
    more
Next Previous
Hi 82° RealFeel® 81° Precipitation 50%

Day

N

E

S

W

  • SE 8 mph
  • Gusts: 15 mph

Humid with considerable clouds; a passing shower this afternoon

  • Max UV Index: 4 (Moderate)
  • Thunderstorms: 20%
  • Precipitation: 0.04 in
  • Rain: 0.04 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs
Lo 61° RealFeel® 55° Precipitation 60%

Night

N

E

S

W

  • W 7 mph
  • Gusts: 13 mph

Mostly cloudy with a couple of showers

  • Max UV Index: N/A
  • Thunderstorms: 20%
  • Precipitation: 0.08 in
  • Rain: 0.08 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 2 hrs

Boston Pollen Levels - September 21

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Sep 21

more Historical Weather Data >
  Today Normal Record 9/21/2013
High 82° 71° 94° (1895) 77°
Low 61° 56° 40° (1929) 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:30 AM with 12:14 of sunlight, then sets at 6:44 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:59 AM with 13:21 of moolight, then sets at 5:20 PM

Top Story

Boston Weather Report

Boston: September Temperature Roller Coaster to Continue

September 21, 2014; 4:42 AM ET

In keeping with tradition, temperatures will continue their up-and-down cycle during the second half of September around Boston. more >

Sun. Pollen

Sun. Dust & Dander

Sun. Wind Maps