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Key findings

  • The highest monthly average temperature in San Juan for June is 86 degrees
  • The lowest monthly average temperature in San Juan for January is 46 degrees
  • The most monthly precipitation in San Juan occurs in September with 2.4 inches
  • The air quality index in San Juan is 7% worse than the national average
  • The pollution index in San Juan is 107% worse than the national average

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      San Juan 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
      January32°F61°F46°F0.5"
      February37°F68°F52°F0.4"
      March44°F76°F60°F0.1"
      April51°F83°F68°F0.1"
      May59°F90°F76°F0.5"
      June70°F100°F86°F0.5"
      July72°F97°F84°F2.2"
      August70°F95°F82°F2.4"
      September64°F90°F77°F2.4"
      October53°F83°F68°F0.6"
      November41°F71°F56°F0.2"
      December33°F61°F47°F0.5"

      San Juan 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.
      IndexSan JuanEl PasoTexas
      Air quality index535352
      Pollution index10,468,50010,468,5004,642,916

      San Juan air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality147
      Days with moderate air quality205
      Days w/ poor A.Q. for sensitive groups11
      Days with unhealthy air quality2

      San Juan air quality information

      PollutantTotal
      Arsenic0.030%
      Benzene0.110%
      Carbon Tetrachloride0.040%
      Lead0.070%
      Mercury0.040%

      Average monthly San Juan temperature with heat index

      San Juan monthly precipitation with daily maximum

      San Juan monthly snow depth with daily maximum

      San Juan monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      La Union, NM1,378536%
      Canutillo, TX5,695536%
      Horizon City, TX19,142536%
      Socorro, TX32,988536%
      Santa Teresa, NM4,388536%
      El Paso, TX678,058536%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Detroit, MI683,4435612%
      Seattle, WA668,8494510%
      Denver, CO663,3035816%
      Washington, DC659,009476%
      Boston, MA658,2794314%
      El Paso, TX678,058536%
      Source: The San Juan, El Paso, TX 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.