The invention provides an 
air monitoring device, and belongs to the technical field of 
air monitoring. The 
air monitoring device comprises a fixed collecting 
assembly, an equipment body and a cleaning 
assembly, wherein the fixed collecting 
assembly comprises a fixing frame, a fixing plate, a collecting 
pipe, a collecting box, a solar photovoltaic panel and a storage 
battery pack. According to the invention, through arrangement of the collecting 
pipe and the collecting box, the collecting 
pipe is arranged on the fixing plate, the collecting box is arranged below the fixing frame, and the collecting pipe communicates with the collecting box, so that rainwater can be collected, and the problem that water is difficult to use for cleaning equipment is solved; through the arrangement of the cleaning assembly, the cleaning assembly comprises a baffle, a motor, a 
threaded rod, a 
sponge, a water pump and a spray head, wherein rainwater collected in the collecting box can be pumped through the water pump and sprayed to equipment through the spray head, and the display screen can be wiped through the motor, the 
threaded rod and the 
sponge, so that the equipment is cleaned; and through the arrangement, the problem that the equipment is inconvenient to clean can be solved.