• Today

    May 18

    83°Lo 53°

    Mostly sunny

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      350 - High

  • Sun

    May 19

    87°Lo 54°

    Sunny and breezy

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      350 - High
    more

  • Mon

    May 20

    90°Lo 55°

    Mostly sunny and very warm

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      350 - High
    more

  • Tue

    May 21

    91°Lo 49°

    Sunny

    Extreme indoor dust & dander levels
    • Precip
      1%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      6%
    more

  • Wed

    May 22

    80°Lo 49°

    Partly sunny and not as warm

    Very High indoor dust & dander levels
    • Precip
      1%
    • Wind
      Speed
      15 mph
    • Cloud
      Cover
      26%
    more
Next Previous
Hi 83° RealFeel® 82° Precipitation 1%

Day

N

E

S

W

  • NW 10 mph
  • Gusts: 20 mph

Mostly sunny

  • Max UV Index: 9 (Very High)
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 53° RealFeel® 46° Precipitation 1%

Night

N

E

S

W

  • NW 8 mph
  • Gusts: 15 mph

Mainly clear

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

Merced Pollen Levels - May 18

  • Extreme
  • Very High
  • High
  • Moderate
  • Low

  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    High

  • Mold

    Pollen

    Low

Temperature History - May 18

more Historical Weather Data >
  Today Normal Record 5/18/2012
High 83° 84° 104° (2009) 86°
Low 53° 53° 36° (1962) 52°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:51 AM with 14:16 of sunlight, then sets at 8:07 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:24 PM with 12:44 of moolight, then sets at 2:08 AM

How Weather Impacts Seasonal Allergy Symptoms

May 18, 2013; 5:00 AM ET If you suffer with seasonal allergies, the weather can relieve or worsen your symptoms. Marja Martinez has the details.

Sat. Pollen

Sat. Dust & Dander

Sat. Wind Maps