A simple and efficient method for extraction and concentration of volatile organic compounds (VOCs) in air using solid-phase microextraction (SPME) has been developed. The analytes are extracted directly from the air and desorbed into a gas chromatograph for separation and quantification. This method requires minimal sample preparation time and, therefore, is suitable for on-site air monitoring. Analytes can be detected at the part per trillion (ppt) to sub part per billion (ppb) concentration levels with an ion trap mass spectrometer. The precision of the method was determined to be 1.5-6% relative standard deviation (RSD). Temperature and humidity effects were studied experimentally, and the method was compared with an EPA-validated method for selected VOCs. The SPME technique may be suitable for both spot sampling and integral exposure overtime sampling. Integrated sampling has been successfully applied to the identification and quantification of toxic volatile organic compounds in environmental air samples.