AirNow: On New Years Day, parts of Rio Grande Valley see unhealthy air quality

HARLINGEN, Texas (ValleyCentral) — Hours after many rang in the new year with fireworks, unhealthy air quality is being reported in parts of the Rio Grande Valley, according to a government website that monitors air quality data. AirNow reports air quality using the official U.S. Air Quality Index, or AQI, which shows whether air quality [...]