With the advent of accurate and reliable low-cost air sensors, economically developing countries experiencing the detrimental human, environmental, and economic impacts of air pollution can establish comprehensive air quality monitoring networks for the first time. Air quality managers in these regions can bypass the traditional notion that air quality data must come exclusively from federal reference method (FRM) or federal equivalent method (FEM) equipment to be useful. Adopting hybrid Air Quality Monitoring 2.0 networks that leverage data from both FRM & FEM equipment and properly-calibrated low-cost sensors allows them to leverage the low costs, high-resolution data coverage, and flexible network design offered by low-cost air sensors to rapidly and cost-effectively establish precisely-located air quality monitoring networks.