Abstract: The temporal and spatial distribution of particulate pollution in Weinan street canyons was measured by vehicular particulate matter sensor from March 1^st to May 31^st, 2019. The results showed that: (1) The concentration of PM_2.5 varied from 37.7 μg/m³ to 51.9 μg/m³, and the sections with high PM_2.5 concentrations were located in the east of the high-tech zone and the main urban area. The concentration of PM_2.5-10 varied from 65.8 μg/m³ to 119.1 μg/m³ and the sections with high PM_2.5-10 concentrations were located in the suburbs of each functional area. (2) The PM_2.5 and PM_2.5-10 of the road environment in the main urban area were more serious during the morning peak hours (07:00-09:00) of working days than on non-working days. In the main urban area, the order of PM_2.5-10 concentrations among different types of road at 07:00 on working days was branch roads (103.5 μg/m³) > main roads (102.1 μg/m³) > secondary roads (96.9 μg/m³). (3) For road sections in the high-tech zones and the old urban areas, in addition to the peaks of PM_2.5 and PM_2.5-10 concentrations during the morning and evening peak hours, the peak of PM_2.5-10 concentrations was likely to occur in the early morning hours on the road sections where construction trucks were driving, bare land, or sections surrounding the construction sites, and the highest concentration of PM_2.5-10 was 230.9 μg/m³ (west section of Letian Street: road section Ⅳ). The research showed that during the morning and evening peak hours of working days, especially during the morning peak hours, the traffic emissions had increased PM_2.5 pollution of road sections located in the east of the high-tech zone and the main urban area. Road sections near the suburbs of the high-tech zone and the old urban area had aggravated the PM_2.5 and PM_2.5-10 pollution caused by the construction trucks at night.