• Tonight

    Sep 19

    Lo 54°

    A thunderstorm in spots early

    Ragweed Pollen Weather
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
  • Sat

    Sep 20

    80°Lo 56°

    A thunderstorm in spots

    Moderate ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
    more
  • Sun

    Sep 21

    73°Lo 55°

    Thundershower

    Moderate ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
    more
  • Mon

    Sep 22

    79°Lo 53°

    Mostly cloudy with a t-storm

    Moderate ragweed pollen levels
    • Precip
      57%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      76%
    more
  • Tue

    Sep 23

    82°Lo 52°

    A p.m. t-storm in the area

    Ragweed Pollen Weather
    • Precip
      43%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      46%
    more
Next Previous
Hi 88° RealFeel® 90° Precipitation 50%

Day

N

E

S

W

  • ENE 4 mph
  • Gusts: 16 mph

Partly sunny and very warm; an afternoon thunderstorm

  • Max UV Index: 6 (High)
  • Thunderstorms: 70%
  • Precipitation: 0.05 in
  • Rain: 0.05 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs
Lo 54° RealFeel® 53° Precipitation 50%

Night

N

E

S

W

  • N 4 mph
  • Gusts: 12 mph

A shower or thunderstorm in spots late this evening; partly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.02 in
  • Rain: 0.02 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs

Longmont Pollen Levels - September 19

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

    Pollen

    Low

  • Weed

    Pollen

    Moderate

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Sep 19

more Historical Weather Data >
  Today Normal Record 9/19/2013
High 88° 76° N/A 68°
Low 54° 42° N/A 44°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:45 AM with 12:18 of sunlight, then sets at 7:03 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:32 AM with 14:00 of moolight, then sets at 4:32 PM

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps