Sleep is essential for the body to recover from both physical and psychological fatigue accruing throughout the day, and to restore energy to maintain bodily functions. Bedroom environmental quality is one of the key causes of sleep disturbance, so a better understanding of the associations of bedroom temperature and ventilation rate (using CO₂ as the surrogate) with sleep quality is necessary. This field study was conducted during summer in subtropical Sydney, Australia, with a sample of 48 householders, including both males and females. In addition to a questionnaire-based subjective sleep quality scales, sleep metrics were also monitored using wrist-wearable sensors. An indoor environmental quality monitoring station (SAMBA) was installed in each survey bedroom for continuous measurements of thermal and air quality parameters at 5-minute intervals for five consecutive days for each subject. The thermal sensation subjects used to characterize their night’s sleep showed no relationship with the actual thermal conditions prevailing in the bedroom while sleeping. Sleep efficiency (ratio of time asleep to time in bed) and rapid eye movement (REM) sleep (%) were both negatively correlated with bedroom operative temperature; as bedroom operative temperature increases by 1 K, the estimate of sleep efficiency and REM sleep percentage decrease by 1.036% and 1.647%, respectively. Deep sleep percentage was negatively related to bedroom CO₂ concentration, with a 4.3% decrement for every 100 ppm increase in the overnight mean CO₂ concentration. The deterioration in subjectively evaluated air freshness was associated with poorer self-reported sleep quality. The effect of bedroom CO₂ concentration on light sleep percentage varied significantly under different bedroom operative temperature levels.

睡眠对于人体从全天的生理和心理疲劳中恢复以及恢复精力以维持身体机能至关重要。卧室环境质量是造成睡眠障碍的关键原因之一，因此，需要更好地了解卧室温度与通风速率之间的关系（使用CO ₂作为替代品）是必需的。这项野外研究是在夏季在澳大利亚亚热带悉尼进行的，样本来自48个家庭，其中包括男性和女性。除了基于问卷的主观睡眠质量量表外，还使用可穿戴腕戴式传感器监测睡眠指标。在每个调查室中均安装了一个室内环境质量监测站（SAMBA），以连续五天的时间连续5天以5分钟的间隔连续测量热和空气质量参数。用来表征其夜间睡眠的热感觉受试者与睡眠时卧室中普遍存在的实际热状况没有关系。睡眠效率（睡眠时间与卧床时间之比）和快速眼动（REM）睡眠（％）均与卧室手术温度负相关。随着卧室手术温度升高1 K，估计的睡眠效率和REM睡眠百分比分别下降1.036％和1.647％。深度睡眠百分比与卧室CO呈负相关₂浓度，过夜的平均CO ₂浓度每增加100 ppm，减少4.3％。主观评估的空气新鲜度的下降与较差的自我报告的睡眠质量有关。在不同的卧室手术温度水平下，卧室CO ₂浓度对轻度睡眠百分比的影响差异很大。