function main() {
  // Get your OpenWeatherMap API key (Sign up for a free account)
  var apiKey = "YOUR_API_KEY"; 

  // Target location (City or Zip Code)
  var targetLocation = "Los Angeles, CA"; 

  // Campaign Selection 
  var campaignName = "Summer Campaign"; 

  // Bid adjustments based on temperature
  var temperatureRanges = {
    "below_70": -0.1,   // Decrease bid by 10% if below 70°F
    "70_to_85": 0.0,    // No change between 70°F and 85°F 
    "above_85": 0.2     // Increase bid by 20% if above 85°F
  };

  // Fetch current weather data
  var weatherUrl = "https://api.openweathermap.org/data/2.5/weather?q=" + targetLocation + "&appid=" + apiKey + "&units=imperial";
  var weatherResponse = UrlFetchApp.fetch(weatherUrl);
  var weatherData = JSON.parse(weatherResponse.getContentText());

  // Extract temperature from the data
  var currentTemperature = weatherData.main.temp;

  // Determine the appropriate bid modifier
  var bidModifier;
  for (var range in temperatureRanges) {
    if (currentTemperature >= range.split("_")[1]) {
      bidModifier = temperatureRanges[range];
      break;
    }
  }

  // Apply the bid modifier at the campaign level
  var campaign = AdsApp.campaigns().withCondition("Name = '" + campaignName + "'").get().next();
  campaign.setBidModifier(1 + bidModifier); 
}