From Harlingen, Texas: Air quality is affected by dust from the Sahara. This dust is causing hazy conditions and will continue to do so until the end of the week. Some improvement in air quality is expected before the weekend, but it will not be completely clear of dust.

On Wednesday, air quality will be in the moderate range. Further information about the dust and its impact on air quality can be found through ValleyCentral. Details about the situation are available from this source.