TODAY MAY15
TEMPERATURE58
HUMIDITY46
PRESSURE30.2
WIND COND.180 9.4
  • 6452Sat60%40%
  • 7256Sun40%
  • 7357Mon50%50%
  • 7660Tue
  • 7864Wed
daynightWeather update from Illinois Valley Regional Airport at

Key findings

  • The highest monthly average temperature in Peru for July is 75.2 degrees
  • The lowest monthly average temperature in Peru for January is 25.7 degrees
  • The most monthly precipitation in Peru occurs in August with 8.2 inches
  • The air quality index in Peru is 100% better than the national average
  • The pollution index in Peru is 59% better than the national average

Compare Peru, IL Weather

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      Peru 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
      January18°F34°F26°F3.3"
      February19°F35°F26°F3.0"
      March32°F51°F40°F4.3"
      April42°F64°F52°F7.2"
      May53°F75°F63°F8.0"
      June62°F83°F72°F7.5"
      July66°F85°F75°F7.1"
      August64°F83°F73°F8.2"
      September56°F78°F66°F6.3"
      October45°F65°F54°F6.6"
      November34°F51°F42°F4.3"
      December23°F37°F30°F3.5"

      Peru 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.
      IndexPeruIllinoisNational
      Air quality index04150
      Pollution index2,097,7403,347,2955,066,862

      Peru air quality information

      MeasurementTotal
      Days measured335
      Days with good air quality334
      Days with moderate air quality1
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Peru air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.060%
      Carbon Tetrachloride0.000%
      Lead0.001%
      Mercury0.300%

      Average monthly Peru temperature with heat index

      Peru monthly precipitation with daily maximum

      Peru monthly snow depth with daily maximum

      Peru monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      La Moille, IL8390100%
      Dover, IL1710100%
      Dalzell, IL7190100%
      Mark, IL5300100%
      Ladd, IL1,1780100%
      Peru, IL9,9130100%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Oregon, WI9,9123922%
      Monmouth, OR9,9193236%
      Brookdale, NJ9,919512%
      Waldwick, NJ9,922512%
      Essex Junction, VT9,9223726%
      Peru, IL9,9130100%
      Source: The Peru, 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.