The air quality index measures PM2.5, less than 2.5 microns particles, to determine the intensity of air pollution in cities.

Several counties in the Texas Panhandle were under red flag warnings from the NWS on Wednesday, signaling an elevated fire risk.

Rwanda-backed rebels gained ground in eastern Congo on Wednesday despite the unilateral ceasefire they declared earlier this week, taking control of a town 100 kilometers (60 ...