TODAY MAR28
TEMPERATURE76
HUMIDITY54
PRESSURE102410
WIND COND.150 16.6
  • 7469Fri
  • 7669Sat
  • 7771Sun
  • 8071Mon
  • 7965Tue
daynightWeather update from Port Isabel, Port Isabel-Cameron County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Port Isabel for August is 85.7 degrees
  • The lowest monthly average temperature in Port Isabel for January is 60.5 degrees
  • The most monthly precipitation in Port Isabel occurs in September with 5.5 inches
  • The air quality index in Port Isabel is 5% worse than the national average
  • The pollution index in Port Isabel is 19% better than the national average

Compare Port Isabel, TX Weather

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      Port Isabel 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
      January52°F71°F61°F1.1"
      February57°F75°F65°F1.1"
      March62°F79°F69°F1.0"
      April69°F84°F76°F1.0"
      May74°F88°F80°F2.1"
      June77°F92°F84°F2.1"
      July78°F93°F85°F2.5"
      August78°F94°F86°F0.8"
      September76°F91°F82°F5.5"
      October70°F87°F78°F2.0"
      November62°F79°F70°F1.8"
      December56°F73°F63°F1.4"

      Port Isabel 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.
      IndexPort IsabelTexasNational
      Air quality index445242
      Pollution index2,200,0102,009,3002,726,193

      Port Isabel air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality236
      Days with moderate air quality129
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Port Isabel air quality information

      PollutantTotal
      Arsenic0.002%
      Benzene0.020%
      Carbon Tetrachloride0.010%
      Lead0.020%
      Mercury0.001%

      Average monthly Port Isabel temperature with heat index

      Port Isabel monthly precipitation with daily maximum

      Port Isabel monthly snow depth with daily maximum

      Port Isabel monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      South Point, TX1,1974412.0%
      Laguna Vista, TX3,1724412.0%
      Villa Pancho, TX3784412.0%
      Orason, TX5554412.0%
      Bayview, TX6624412.0%
      Port Isabel, TX6,2784412.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Walker, LA6,2784510.0%
      Carmel Hamlet, NY6,2783628.0%
      Seneca Falls, NY6,2763726.0%
      Bellefonte, PA6,2764412.0%
      Saint-Paul, QC6,280n/a 
      Port Isabel, TX6,2784412.0%
      Source: The Port Isabel, 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.