TODAY MAR01
TEMPERATURE55
HUMIDITY52
PRESSURE30.12
WIND COND.143 1.6
  • 6543Tue
  • 6544Wed
  • 6144Thu
  • 6346Fri
  • 6043Sat
daynightWeather update from DW7094 Mill Valley at

Key findings

  • The highest monthly average temperature in Mill Valley for September is 64 degrees
  • The lowest monthly average temperature in Mill Valley for January is 50 degrees
  • The most monthly precipitation in Mill Valley occurs in December with 4.1 inches
  • The air quality index in Mill Valley is 20% better than the national average
  • The pollution index in Mill Valley is 62% worse than the national average

Compare Mill Valley, CA Weather

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      Mill Valley 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
      January41°F59°F50°F2.8"
      February45°F62°F53°F3.1"
      March47°F65°F55°F2.9"
      April49°F67°F57°F1.8"
      May52°F69°F59°F0.4"
      June54°F72°F62°F0.3"
      July56°F73°F63°F0.0"
      August57°F73°F63°F0.0"
      September55°F76°F64°F0.1"
      October52°F73°F61°F1.0"
      November47°F65°F56°F1.9"
      December42°F59°F50°F4.1"

      Mill Valley 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.
      IndexMill ValleyCaliforniaNational
      Air quality index405550
      Pollution index8,232,36018,106,7265,066,862

      Mill Valley air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality290
      Days with moderate air quality74
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Mill Valley air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.060%
      Carbon Tetrachloride0.000%
      Lead0.010%
      Mercury0.010%

      Average monthly Mill Valley temperature with heat index

      Mill Valley monthly precipitation with daily maximum

      Mill Valley monthly snow depth with daily maximum

      Mill Valley monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Point Reyes Station, CA5743432%
      Berkeley, CA118,5854020%
      Kensington, CA5,6024020%
      Richmond, CA108,3034020%
      Fairfax, CA7,5984020%
      Mill Valley, CA14,3184020%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Hobe Sound, FL14,3183628%
      Beech Grove, IN14,319548%
      Fairview, NJ14,314512%
      Niceville, FL14,3253138%
      Chubbuck, ID14,3262746%
      Mill Valley, CA14,3184020%
      Source: The Mill Valley, 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.