Insights: Dallas-Fort Worth-Arlington, TX metro. Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 59 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 103 Good days (28%), 217 Moderate (59%), and 40 Unhealthy-for-Sensitive-Groups (11%). The 90th-percentile AQI finished at 108 while the highest single-day reading hit 304 (Hazardous). Metro residents averaged roughly 8.5 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 -7.3 points (measured against 345 monitored days in 2020 and 324 in 2025, so raw day counts are not comparable) and the median AQI moved +5 points, which classifies the multi-year trajectory as worsening. The annual record contains 5 days at Unhealthy or worse. On those days, the EPA recommends that sensitive groups limit prolonged outdoor exertion. Metros with comparable AQI profiles include Denver-Aurora-Lakewood, CO (28.8% good, AQI 58); Albuquerque, NM (24.9% good, AQI 61); Brownsville-Harlingen, TX (29.9% good, AQI 57).