Insights: Blacksburg-Christiansburg-Radford, VA metro. Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 38 over 344 measured days in 2024, which corresponds to a Good band and a Excellent metro-wide health grade. The monitored-day split lands at 316 Good days (92%), 28 Moderate (8%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 50 while the highest single-day reading hit 80 (Moderate). Metro residents averaged roughly 27.6 clean-air days per 30-day window across the reporting year.

Across the 2020–2024 trend window, good days shifted by -21 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 Americus, GA (93.4% good, AQI 38); Beaver Dam, WI (81.2% good, AQI 38); Brainerd, MN (79.5% good, AQI 38).