For all Zarski dense Anosov subgroups of a semisimple real algebraic group, we prove that their limit sets are Ahlfors regular for intrinsic conformal premetrics. As a consequence, we obtain that a Patterson–Sullivan measure is Ahlfors regular (and hence equal to the Hausdorff measure) if and only if the associated linear form is symmetric. We also discuss several applications, including analyticity of (p,q)-Hausdorff dimensions on the Teichmüller spaces, new upper bounds on the growth indicator, and
$L^2$-spectral properties of associated locally symmetric manifolds.