This investigation was mainly carried out to develop and evaluate a stationary environmental cab with effective control techniques. Optical particle counters were used to measure the particulate matter that is 2.5 micrometers (PM_2.5) aerosol number concentration, mg/m³ inside and outside the cab. The ratio of the two measurements (i.e., protection factor = outside concentration / inside concentration) was used to calculate how efficient the tractor cab was at removing aerosols, then Inverted these protection factors termed aerosol penetration. Testing was conducted to evaluate compliance with American Society of Agricultural Engineers Standard S525 [ASAE, 1997], and air quality measurement, (Temperature,°C and humidity,%). In the stationary test, the tractor's cab is isolated by glass wool and placed in a 25m³ volume of enclosed testing chamber. Aerosol, generated by burning incense sticks. Experiments were done under four parameters namely three different modes of aeration and filtration systems in insulated cab included, (fresh air mode, re-circulation mode and evaporative cooling mode), four different fan air speed of (1.8, 2.1, 2.5 and 3 m/sec.), two different cab position are used (In-cab and out-cab) and sixty levels of times (1, 2, 3, 4, …and 60 seconds) for each run of optical particle counter) & (Seven levels of 0, 5, 10, 15, 20, 25 and 30 minutes for each reading of air quality measurement. The obtained results showed that the best results of PM_2.5 concentration for inside cab, was 3.3 mg/m³, the maximum values of Protection factors of filter inside cab was record 87, while aerosol penetration through filter inside cab, was record (1 / 87) = 0.0115, and the efficiency of filter with cab was 98.97%, obtained with fresh air mode in-cab at fan air speed of 1.8 m/sec., although getting the best result of the differences in temperatures in-cab, 7 °C, when using the cooling system evaporative, they recorded an increase of undesirable values humidity differences, (DRH), 11.7 %, with increasing the speed of the air fan because of the increasing saturation of the air spray of water used in the system.