In this work, we use all-atom MD simulations of a defect-free PAA hydrogel to investigate the effect of weak to intermediate uni-axial compression and stretching on the counterion condensation. This model allows us to explore the microscopic origins of counterion condensation in a deforming PE hydrogel composed of a weak PE chain. In our atomistic models, all water molecules, backbone charges, and counterions are considered explicitly with their partial charges, dipoles, and steric interactions, allowing us to monitor the microscopic "condensation" of counterions on the individual backbone charges of the hydrogel chains. Our simulations suggest that deformation affects the counterions condensations in a highly non-monotonic way, depending on the conformational changes of the PAA chains. The simulations with a semi-dilute solution, in which PAA chains are unconstrained as opposed to the hydrogel structure, do not show such deformation-induced condensation patterns. Furthermore, simulations with single stretched PAA chains indicate that conformation-dependent counterion condensations could be generic property of weak PEs.