Iranian western cities, including Hamadan, have been experiencing Middle East Dust Storms (MEDS) phenomenon problems in recent years, so the air quality is getting worse every year in these cities. The aim of this study was to evaluate the human health impacts of criteria air pollutants including PM₁₀, PM_2.5, NO₂, SO₂, CO and O₃ on the citizens of Hamadan using AirQ model software 2.2.3. Considering the determined baseline incidence (BI) and relative risk (RR) rate, the attributable proportion (AP) of deaths due to cardiovascular and respiratory mortality attributed to PM_2.5, PM₁₀, O₃, NO₂, and CO pollutants was estimated to be 4.42%, 3.37%, 1.75%, 1.74% and 0.92% (95% CI) of the total mortality and the excess death cases were respectively estimated to be 131.9, 100.4, 52.1, 51.9 and 27.3 persons. In addition, cardiovascular mortality brings more contribution than respiratory mortality in total death number. The results of our study also showed that PM_2.5 poses the greatest health effects on the citizens. Analyzing the average seasonal concentrations of studied pollutants (PM₁₀, PM_2.5, and NO₂) and the mean seasonal temperature values revealed a positive linear correlation. Significant negative correlations were observed between the studied pollutants (PM₁₀, PM_2.5 and NO₂) and relative humidity, and between PM and wind speed. This study, therefore, provides additional data in decision-makings for the development of strategies for reduction of ambient air pollution which will result in improvements of air quality.

包括哈马丹（Hamadan）在内的伊朗西部城市近年来一直遇到中东沙尘暴（MEDS）现象的问题，因此这些城市的空气质量每年都在恶化。这项研究的目的是使用AirQ模型软件2.2.3评估标准空气污染物（包括PM ₁₀，PM _2.5，NO ₂，SO ₂，CO和O _3）对哈马丹居民的人体健康影响。考虑到确定的基线发生率（BI）和相对风险（RR）比率，归因于PM _2.5，PM ₁₀，O ₃，NO _2的心血管和呼吸系统死亡的死亡比例（AP），而CO污染物估计占总死亡率的4.42％，3.37％，1.75％，1.74％和0.92％（95％CI），而超额死亡病例分别估计为131.9、100.4、52.1、51.9和27.3人。此外，在总死亡人数中，心血管疾病的死亡率比呼吸系统疾病的死亡率高。我们的研究结果还表明，PM _2.5对公民的健康影响最大。分析研究的污染物（PM ₁₀，PM _2.5和NO ₂）的平均季节性浓度和平均季节性温度值显示线性正相关。观察到的污染物之间显着负相关（PM ₁₀，PM _2.5和NO ₂）和相对湿度，以及PM和风速之间。因此，这项研究为制定减少环境空气污染的策略提供了更多的决策依据，从而改善了空气质量。