Insights: Jackson, WY-ID metro. Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 45 over 226 measured days in 2025, which corresponds to a Good band and a Good metro-wide health grade. The monitored-day split lands at 179 Good days (79%), 47 Moderate (21%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 58 while the highest single-day reading hit 84 (Moderate). Metro residents averaged roughly 23.8 clean-air days per 30-day window across the reporting year.

Across the 2020–2025 trend window, good days shifted by -133 and the median AQI moved +2 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 Akron, OH (62.2% good, AQI 45); Carson City, NV (79.3% good, AQI 45); Clinton, IA (59.9% good, AQI 45).