Improved distance-based detection of PM2.5 monitor deserts across the contiguous United States

Key Points

• Spatial analysis reveals significant gaps in PM2.5 monitoring across the contiguous United States, impacting air quality assessments.
• Key metrics highlight areas lacking adequate PM2.5 monitoring, which totaled over 40% of certain regions examined.
• Distance-based detection methods were used for accurate mapping of PM2.5 monitor deserts across the country.
• Findings underscore the need for enhanced monitoring infrastructure to support air quality management and protect health.