Allyl cyanide, CH2CHCH2CN, is a volatile organic compound that is emitted by biogenic and anthropogenic sources. Daytime atmospheric degradation of CH2CHCH2CN may be initiated by reaction with OH radicals, Cl atoms and O3. In this work, we report the gas-phase rate coefficients for the reaction of these atmospheric oxidants with CH2CHCH2CN (k1, k2 and k3, respectively) determined in an atmospheric simulation chamber at 298 ± 2 K and 760 ± 5 Torr of air, in a NOx-free environment. A relative kinetic method was employed for OH and Cl kinetic studies, obtaining k1 = (1.58 ± 0.39) × 10−11 cm3 molecule−1 s−1 and k2 = (2.26 ± 0.30) × 10−10 cm3 molecule−1 s−1. For the O3+CH2CHCH2CN reaction, k3 = (6.01 ± 0.24) × 10−19 cm3 molecule−1 s−1 was obtained using an absolute kinetic method under pseudo-first order conditions (excess of allyl cyanide). In both cases, Fourier Transform Infrared (FTIR) spectroscopy was used for monitoring the loss of CH2CHCH2CN relative to the loss of a reference compound and the loss of ozone, respectively. The estimated tropospheric lifetime considering all the homogeneous processes evaluated in this work is 16 h, with the major degradation route being the reaction with OH radicals. Gas-phase products detected in the IR spectrum have been identified by comparison with IR experimental spectra and/or theoretical spectra computed using density functional theory (DFT) calculations. In the Cl and O3 reactions, among others, HC(O)CN, HC(O)CH2CN, HC(O)H, and CO were identified as products, indicating that these reactions proceed mainly by addition of the oxidant to the double bond of CH2CHCH2CN. Even though allyl cyanide absorbs in the atmospheric IR window, due to its short lifetime it has a negligible contribution to the radiative forcing of climate. The formation of secondary organic aerosols (SOAs) has been investigated in the Cl reaction by a Fast Particle Mobility Sizer spectrometer. The determined SOA yield is lower than 6%, which could indicate a negligible impact on human health that could also be extrapolated to the OH reaction.