• Today

    Jul 23

    93°Lo 76°

    A thunderstorm in spots

    Moderate ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
    more
  • Sun

    Jul 24

    95°Lo 75°

    Some sun, hot and humid

    Moderate ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
  • Mon

    Jul 25

    89°Lo 72°

    A couple of p.m. t-storms

    Moderate ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
    more
  • Tue

    Jul 26

    88°Lo 71°

    Sunshine, a t-storm; humid

    Moderate ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
    more
  • Wed

    Jul 27

    87°Lo 72°

    Partly sunny with a t-storm

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 95° RealFeel® 116° Precipitation 16%

Day

N

E

S

W

  • S 5 mph
  • Gusts: 7 mph

Some sun, hot and humid

  • Max UV Index: 7 (High)
  • Thunderstorms: 24%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 75° RealFeel® 83° Precipitation 25%

Night

N

E

S

W

  • SSW 4 mph
  • Gusts: 6 mph

Warm and muggy; considerable clouds in the evening, then partly cloudy late

  • Max UV Index: N/A
  • Thunderstorms: 24%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

O'Fallon Pollen Levels - July 24

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Tree Pollen

    Low

  • Ragweed Pollen

    Moderate

  • Mold

    High

  • Grass Pollen

    Low

Temperature History - Jul 24

more Historical Weather Data >
  Today Normal Record 7/24/2015
High 95° 91° N/A 89°
Low 75° 68° N/A 65°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:55 AM with 14:22 of sunlight, then sets at 8:17 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:20 PM with 12:42 of moolight, then sets at 12:02 PM

O'Fallon Weather Report

Gradual cooldown to bring relief from stifling conditions in the central US

July 23, 2016; 9:05 AM ET

Those looking for a break from the heat across the central United States will be in luck as a slow cooldown is in store starting this weekend. more >

Sun. Pollen

Sun. Dust & Dander

Sun. Wind Maps