TODAY DEC22
TEMPERATURE59
HUMIDITY45
PRESSURE102099.62
WIND COND.
  • 7149Mon
  • 6344Tue60%50%
  • 6246
  • 6446Thu
  • 6548Fri
daynightWeather update from Cable Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Upland for August is 77.8 degrees
  • The lowest monthly average temperature in Upland for December is 54.5 degrees
  • The most monthly precipitation in Upland occurs in December with 2.6 inches
  • The air quality index in Upland is 111% worse than the national average
  • The pollution index in Upland is 736% worse than the national average

Compare Upland, CA Weather

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      Upland Average Temperature

      In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
      MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
      January44°F69°F56°F2.3"
      February45°F70°F57°F2.0"
      March48°F74°F60°F1.2"
      April51°F77°F62°F0.7"
      May55°F81°F66°F0.4"
      June60°F88°F72°F0.0"
      July65°F94°F77°F0.1"
      August65°F95°F78°F0.0"
      September64°F93°F76°F0.2"
      October57°F84°F69°F0.4"
      November49°F77°F62°F0.6"
      December43°F68°F55°F2.6"

      Upland air quality index & pollution index

      In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
      IndexUplandCaliforniaNational
      Air quality index895542
      Pollution index22,790,90010,473,1902,726,193

      Upland air quality

      MeasurementTotal
      Days measured365
      Days with good air quality42
      Days with moderate air quality178
      Days w/ poor A.Q. for sensitive groups79
      Days with unhealthy air quality58

      Air quality details

      PollutantTotal
      Arsenic0.060%
      Benzene0.190%
      Carbon Tetrachloride0.010%
      Lead0.220%
      Mercury0.230%

      Average monthly Upland temperature with heat index

      Upland monthly precipitation with daily maximum

      Upland monthly snow depth with daily maximum

      Upland monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      South San Jose Hills, CA19,1047244.0%
      Citrus, CA10,1057244.0%
      West Covina, CA105,8087244.0%
      Azusa, CA49,5847244.0%
      Charter Oak, CA9,9638978.0%
      Upland, CA77,3488978.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Jonesboro, AR77,3914510.0%
      Layton, UT77,2684510.0%
      Kendall, FL77,2284118.0%
      Cedar Park, TX77,1814412.0%
      Scranton, PA76,9973824.0%
      Upland, CA77,3488978.0%
      Source: The Upland, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.