We investigate the Friedmann-Lemaitre-Robertson-Walker (FLRW)

cosmological models within the framework of Rastall gravity incorporating

particle creation. The modified field equations for Rastall gravity are

derived and exact solutions are obtained under various assumptions of the

scale factor. The qualitative behaviour of our solutions depends on the

Rastall coupling parameter ψ = kλ. Following Akarsu et al. 2020 [Eur.

Phys. J. C 80, 1050], we have restricted the Rastall coupling parameter

ψ (k = 1) to the range -0.0001 < ψ < 0.0007 at 68% CL from CMB+BAO

data. Further, we have discussed the distinct physical behaviour of the

derived models in detail.