Insights: Kansas City, MO-KS metro. Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 51 over 365 measured days in 2025, which corresponds to a Moderate band and a Poor metro-wide health grade. The monitored-day split lands at 180 Good days (49%), 175 Moderate (48%), and 7 Unhealthy-for-Sensitive-Groups (2%). The 90th-percentile AQI finished at 74 while the highest single-day reading hit 293 (Very Unhealthy). Metro residents averaged roughly 14.8 clean-air days per 30-day window across the reporting year.

Across the 2020–2025 trend window, the share of monitored days rated Good shifted by +15.6 points and the median AQI moved -3 points, which classifies the multi-year trajectory as improving. The annual record contains 3 days at Unhealthy or worse. On those days, the EPA recommends that sensitive groups limit prolonged outdoor exertion. Metros with comparable AQI profiles include Boise City, ID (49.9% good, AQI 51); Hot Springs, AR (49.2% good, AQI 51); Laredo, TX (49.9% good, AQI 51).