TODAY DEC22
TEMPERATURE25
HUMIDITY68
PRESSURE102980
WIND COND.
  • 3223Sun
  • 4334Mon40%
  • 4334Tue20%
  • 483830%30%
  • 5242Thu
daynightWeather update from Dayton, Cox Dayton International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Union for July is 74.5 degrees
  • The lowest monthly average temperature in Union for January is 28.5 degrees
  • The most monthly precipitation in Union occurs in April with 4.5 inches
  • The air quality index in Union is 12% worse than the national average
  • The pollution index in Union is 323% worse than the national average

Compare Union, OH Weather

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      Union 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
      January20°F38°F28°F3.4"
      February20°F40°F30°F2.3"
      March31°F53°F41°F4.0"
      April41°F67°F53°F4.5"
      May51°F75°F63°F4.1"
      June61°F84°F72°F4.5"
      July63°F85°F74°F4.3"
      August62°F85°F73°F2.9"
      September55°F79°F67°F4.3"
      October44°F67°F55°F3.5"
      November33°F55°F43°F3.1"
      December25°F42°F33°F3.9"

      Union 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.
      IndexUnionOhioNational
      Air quality index474042
      Pollution index11,539,3004,472,3862,726,193

      Union air quality

      MeasurementTotal
      Days measured365
      Days with good air quality213
      Days with moderate air quality152
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.210%
      Benzene0.110%
      Carbon Tetrachloride0.060%
      Lead0.110%
      Mercury0.050%

      Average monthly Union temperature with heat index

      Union monthly precipitation with daily maximum

      Union monthly snow depth with daily maximum

      Union monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Arcanum, OH2,457688.0%
      Ithaca, OH114688.0%
      New Carlisle, OH5,5774510.0%
      Christiansburg, OH4814510.0%
      New Lebanon, OH3,886476.0%
      Union, OH6,777476.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Robertsdale, AL6,7763726.0%
      Kosciusko, MS6,7783334.0%
      Bee Cave, TX6,7784412.0%
      Dysart et al, ON6,779n/a 
      Peace River C, BC6,779n/a 
      Union, OH6,777476.0%
      Source: The Union, OH 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.