The Public Health Air Quality Act of 2025 establishes a comprehensive federal air quality monitoring program designed to protect public health, particularly in communities already burdened by pollution. The EPA must deploy thousands of low-cost monitoring systems across the country—including at least 100 multipollutant stations in vulnerable areas with high asthma, poverty, or pollution rates, and approximately 1,000 low-cost monitors in clusters throughout communities—with all data published publicly within 7 days in accessible, multilingual formats. For industrial facilities, the bill requires real-time fenceline monitoring at approximately 100 high-priority stationary sources (particularly in petrochemical, chemical, and manufacturing sectors) within one year, with mandatory corrective action and public reporting if pollutant levels exceed health-protective thresholds. The EPA must develop and update advanced testing methods, maintain monitors with 180-day maintenance checks, integrate satellite data for air quality compliance by 2028, and conduct assessments of air quality standards compliance and pollution disparities across communities. The legislation authorizes $75 million for fiscal year 2026, with monitoring continuing for at least 6 years and implementation deadlines ranging from 18 months to 40 months depending on the specific monitoring requirement.
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