• Today

    May 19

    78°Lo 49°

    Areas of low clouds, then sun

    Very High indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      50 - Moderate
    more

  • Mon

    May 20

    82°Lo 49°

    Low clouds followed by sun

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      50 - Moderate

  • Tue

    May 21

    72°Lo 48°

    Not as warm

    Very High indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      50 - Moderate
    more

  • Wed

    May 22

    70°Lo 44°

    Low clouds, then sun

    Very High indoor dust & dander levels
    • Precip
      3%
    • Wind
      Speed
      13 mph
    • Cloud
      Cover
      53%
    more

  • Thu

    May 23

    71°Lo 45°

    Sunny; breezy in the p.m.

    Very High indoor dust & dander levels
    • Precip
      1%
    • Wind
      Speed
      12 mph
    • Cloud
      Cover
      0%
    more
Next Previous
Hi 82° RealFeel® 85° Precipitation 1%

Day

N

E

S

W

  • NW 8 mph
  • Gusts: 14 mph

Low clouds followed by sunshine

  • Max UV Index: 8 (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 49° RealFeel® 49° Precipitation 1%

Night

N

E

S

W

  • SSE 3 mph
  • Gusts: 10 mph

Mainly clear

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

San Luis Obispo Pollen Levels - May 20

  • Extreme
  • Very High
  • High
  • Moderate
  • Low

  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Moderate

  • Mold

    Pollen

    Low

Temperature History - May 20

more Historical Weather Data >
  Today Normal Record 5/20/2012
High 82° 70° 95° (2003) 85°
Low 49° 50° 36° (1974) 46°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:55 AM with 14:09 of sunlight, then sets at 8:04 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:26 PM with 11:50 of moolight, then sets at 3:16 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.

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps