TODAY MAY15
TEMPERATURE65
HUMIDITY28
PRESSURE30.21
WIND COND.220 13
  • 6350Sat50%50%
  • 7353Sun30%
  • 7355Mon40%40%
  • 7658Tue
  • 7762Wed
daynightWeather update from Rochelle, Rochelle Municipal-Koritz Field Airport at

Key findings

  • The highest monthly average temperature in Steward for July is 71.5 degrees
  • The lowest monthly average temperature in Steward for January is 21.6 degrees
  • The most monthly precipitation in Steward occurs in October with 7.1 inches
  • The air quality index in Steward is 16% better than the national average
  • The pollution index in Steward is 66% better than the national average

Compare Steward, IL Weather

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      Steward 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"

      Steward 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.
      IndexStewardIllinoisNational
      Air quality index424150
      Pollution index1,721,0903,347,2955,066,862

      Steward air quality information

      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

      Steward air quality information

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

      Average monthly Steward temperature with heat index

      Steward monthly precipitation with daily maximum

      Steward monthly snow depth with daily maximum

      Steward monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Compton, IL2590100%
      Sublette, IL4360100%
      Lee, IL3580100%
      Waterman, IL1,5270100%
      Paw Paw, IL8120100%
      Steward, IL3154216%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Chupadero, NM3154412%
      Medicine Lake, MN315468%
      Kinderhook, IL3154118%
      Holloway, OH3153922%
      Campbell, NE3151962%
      Steward, IL3154216%
      Source: The Steward, 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.