Insights: Buffalo-Cheektowaga-Niagara Falls, NY metro. Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 44 over 366 measured days in 2024, which corresponds to a Good band and a Moderate metro-wide health grade. The monitored-day split lands at 233 Good days (64%), 132 Moderate (36%), and 1 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 62 while the highest single-day reading hit 105 (USG). Metro residents averaged roughly 19.1 clean-air days per 30-day window across the reporting year.

Across the 2020–2024 trend window, good days shifted by -43 and the median AQI moved +3 points, which classifies the multi-year trajectory as worsening. The metro avoided any Unhealthy-tier days entirely, an outcome that typically reflects favorable wind patterns, lower industrial density, or effective regional emission controls. Metros with comparable AQI profiles include Amarillo, TX (72.8% good, AQI 44); Berlin, NH-VT (81.1% good, AQI 44); Bloomington, IL (69.4% good, AQI 44).