• Tonight

    May 20

    Lo 52°

    Mainly clear

    Dust & Dander Weather
    • Grass
      Pollen
      12 - Moderate
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      350 - High
    more

  • Tue

    May 21

    64°Lo 48°

    Cooler

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

  • Wed

    May 22

    66°Lo 49°

    Mostly sunny and breezy

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

  • Thu

    May 23

    65°Lo 50°

    Partly sunny and breezy

    Extreme indoor dust & dander levels
    • Precip
      3%
    • Wind
      Speed
      16 mph
    • Cloud
      Cover
      26%
    more

  • Fri

    May 24

    64°Lo 52°

    Mostly sunny and breezy

    Extreme indoor dust & dander levels
    • Precip
      6%
    • Wind
      Speed
      13 mph
    • Cloud
      Cover
      20%
    more
Next Previous
Hi 64° RealFeel® 62° Precipitation 3%

Day

N

E

S

W

  • W 20 mph
  • Gusts: 30 mph

Low clouds followed by sunshine, breezy and cooler

  • Max UV Index: 8 (Very High)
  • Thunderstorms: 2%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 48° RealFeel® 37° Precipitation 4%

Night

N

E

S

W

  • W 16 mph
  • Gusts: 28 mph

Clear, breezy and cool

  • Max UV Index: N/A
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

San Bruno Pollen Levels - May 21

  • Extreme
  • Very High
  • High
  • Moderate
  • Low

  • Grass

    Pollen

    Moderate

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    High

  • Mold

    Pollen

    Low

Temperature History - May 21

more Historical Weather Data >
  Today Normal Record 5/21/2012
High 64° 68° 92° (2000) 65°
Low 48° 52° 45° (1974) 52°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:56 AM with 14:21 of sunlight, then sets at 8:17 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:40 PM with 11:19 of moolight, then sets at 3:59 AM

Smoke Alert: The Hidden Dangers of E-Cigarettes

May 20, 2013; 5:00 AM ET E-cigarette manufacturers claim the devices can help a person quit smoking but have those claims ever been proven?

Tue. Pollen

Tue. Dust & Dander

Tue. Wind Maps