for ($i = 1; $i < $histDateSize + 1; $i++) {
                $arrayIdx = "historical_" . $i;
                $historicalArray[$arrayIdx]["date"] = $this->historicalDate[$i];
                $historicalArray[$arrayIdx]["description"] = $this->historicalDesc[$i];
                $historicalArray[$arrayIdx]["temperature"] = $this->historicalTemp[$i];