<p>Methods: PM2.5 concentrations generated by 25 Clarity Node Solar-Powered monitors from January 1, 2020–June 30, 2022 were abstracted from the Clarity dashboard. We computed 24-hour average PM2.5 concentration at city and division levels by combining data from all monitors in the respective areas. Average PM2.5 concentrations were compared by hour of the day to observe variations in air quality throughout the day. We used the Seasonal Mann-Kendall statistical test to assess trends in 24-hour average PM2.5.</p>