隨著全球暖化加劇，溫度不斷升高，使得在戶外的活動變得十分不適。而又因為都市的高使用率，使得熱量容易累積，高溫現象更為頻繁，因此，戶外空間的熱舒適議題顯得更為重要。過去研究多探討不同單點的天空可視率與溫度之比較，但少有探討一整個區域的溫度變化，但戶外的各種活動，如觀光、遊憩等的範圍不僅侷限於一個單點，而是與整個區域相關。
故本研究參考台南市政府的觀光文宣，選定政府建議之觀光路線作為熱舒適分析的區域，利用三個時段的移動實測，探討整體路線於不同天空可視率之溫度變化，並且進行問卷發放，調查不同區域、不同年齡層的遊客對於觀光區域的熱感知程度，期盼能作為日後都市觀光導覽的建議與改善。
研究結果發現，空氣溫度與天空可視率相關，而若涉及平均輻射溫度，南向天空可視率SVFS能夠代表天空遮蔽現象；而在傳統的街道中，開口向南的街道因為整日接收日射較多，在有無植栽差異下的空氣溫度差異約2.5ºC左右，但是以平均輻射溫度而言，則溫差可高達10ºC左右，比起其他類型的街道更加需要植栽或其他遮蔽物來抵擋日射；而在整體觀光路線的規劃方面，由於不同的街廓類型所能抵擋日射的時間不同，因此觀光路線應配合時間做一有時間性的規劃。
在問卷方面，最多遊客選擇找遮陽處來調適熱不適，而大約65%的遊客覺得增加植樹能提高前來意願，另外，在進行問卷與實測結果的比較後，發現溫度的高低確實造成遊客的感之差異，有改善需求，其中又以北遮蔽街道的為最優先改善的區域。

As global warming intensifies, activities of outdoor space become very uncomfortable. Therefore, the thermal comfort issue of outdoor space is more important. In the past, the study explored the comparison of the Sky View Factor and temperature of different single points, but rarely discussed the temperature change of an entire area, but the range of outdoor activities, such as tourism, is not limited to a single point.
Therefore, this study selects the tourism route recommended by the government as analysis area, and measures the temperature changes with three different times by mobile measurement. This study also conducts questionnaires of tourists with different regions and different ages.
This study found, the air temperature is related to the Sky View Factor, and the mean radiant temperature is related to SVFS. In terms of questionnaires, most tourists choose to find shades to adjust for thermal discomfort, and about 65% of tourists think that increasing vegetation can increase their willingness to come. In addition, after comparing the questionnaire with the measured results, it is found that the temperature does cause difference in feelings to tourists. Thus, there is an improvement in demand, and in the streets with opening southward is the most important area for improvement.

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