TODAY NOV22
TEMPERATURE39
HUMIDITY93
PRESSURE101420
WIND COND.330 9.4
  • 4430Fri
  • 4332Sat
  • 5140Sun
  • 4521Mon
  • 3622Tue
daynightWeather update from Rochelle, Rochelle Municipal-Koritz Field Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Hillcrest for July is 71.5 degrees
  • The lowest monthly average temperature in Hillcrest for January is 21.6 degrees
  • The most monthly precipitation in Hillcrest occurs in October with 7.1 inches
  • The air quality index in Hillcrest is equal to the national average
  • The pollution index in Hillcrest is 37% better than the national average

Compare Hillcrest, IL Weather

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      Hillcrest 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
      January14°F30°F22°F3.8"
      February14°F32°F23°F3.4"
      March29°F48°F37°F4.3"
      April39°F62°F50°F4.5"
      May50°F74°F61°F5.4"
      June59°F81°F70°F6.7"
      July61°F82°F71°F6.0"
      August59°F81°F69°F6.4"
      September51°F76°F63°F3.8"
      October41°F63°F51°F7.1"
      November29°F48°F38°F3.9"
      December19°F34°F26°F3.6"

      Hillcrest 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.
      IndexHillcrestIllinoisNational
      Air quality index424142
      Pollution index1,721,0903,148,6942,726,193

      Hillcrest air quality

      MeasurementTotal
      Days measured341
      Days with good air quality240
      Days with moderate air quality100
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.001%
      Benzene0.020%
      Carbon Tetrachloride0.001%
      Lead0.002%
      Mercury0.000%

      Average monthly Hillcrest temperature with heat index

      Hillcrest monthly precipitation with daily maximum

      Hillcrest monthly snow depth with daily maximum

      Hillcrest monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Lee, IL3800100.0%
      Shabbona, IL9370100.0%
      Ashton, IL8274216.0%
      Steward, IL3504216.0%
      Davis Junction, IL2,5744216.0%
      Hillcrest, IL1,6724216.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Leona Valley, CA1,6727244.0%
      Waterville, NY1,6722746.0%
      Ashley, OH1,6724118.0%
      Franklin, QC1,672n/a 
      Cheswold, DE1,6734216.0%
      Hillcrest, IL1,6724216.0%
      Source: The Hillcrest, IL 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.