• Mostly clear 68°
    Asthma Current Weather
    • Relative Humidity
      69%
    • Yesterday
      Temp
      69°
    • Pressure
      29.90 inHg
  • Tonight

    Sep 2

    Lo 58°

    Increasing cloudiness

    Asthma Weather
    • Hi
      RealFeel
      88°
    • UV
      7 - Very High
    • Air Qual.
      Moderate
    Day Details >
  • Tomorrow

    Sep 3

    Hi 82°

    Low clouds, then sunshine

    Beneficial weather for asthma
    • Hi
      RealFeel
      86°
    • UV
      5 - High
    • Air Qual.
      Moderate
    Day Details >
  • Friday

    Sep 4

    Hi 79°

    Low clouds, then sun and cool

    Beneficial weather for asthma
    • Hi
      RealFeel
      83°
    • UV
      5 - High
    • Air Qual.
      Good
    Day Details >
Next

Cool Friday

9/2 9/3 Now: 10:23pm
PM 10-2
  • 10pm Mostly clear 68° 0%
  • 11pm Mostly clear 66° 0%
  • 12am Mostly clear 65° 0%
  • 1am Mostly clear 63° 0%
  • 2am Cloudy 62° 0%
AM 9-2
  • 9am Cloudy 65° 0%
  • 10am Cloudy 69° 0%
  • 11am Cloudy 73° 0%
  • 12pm Cloudy 76° 0%
  • 1pm Cloudy 79° 0%
  • 2pm Mostly sunny 81° 0%
PM 3-8
  • 3pm Mostly sunny 82° 0%
  • 4pm Mostly sunny 80° 0%
  • 5pm Mostly sunny 79° 0%
  • 6pm Mostly sunny 76° 0%
  • 7pm Mostly sunny 73° 0%
  • 8pm Mostly clear 68° 0%
Hourly Forecast >
Sep 02, 2015; 6:20 PM ET
Five-day Weather Forecast for Los Angeles, CA
Los Angeles, CA Weather Forecast

Rancho Cucamonga Weather Report

Los Angeles: September to Start With Cooler Conditions

September 2, 2015; 2:13 PM ET

The first few days of September will feature cooler conditions across much of the Los Angeles Basin. more >

Respiratory Health Live Feed

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The Dangers of Bus Travel

Dec 10, 2012; 5:00 AM ET While bus transportation is one of the most affordable, it is important to know which motor coach companies rank highest in safety.

Wed. Air Quality

Wed. Asthma Risk

Wed. UV Index