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Primary air pollutant in the Winterhaven area:
OZONE - 31 Good
Enjoy your outdoor activities.
Other Pollutants:
PM2.5 - 17 Good
PM10 - 19 Good
[View the ADEQ Hourly Forecast for Yuma]
Yesterday was a significant dust day for southeastern, central, and southwestern Arizona. A strong storm system's winds, along with a very dry landscape, was a favorable combination for very high PM10 (dust) levels around the state. Yuma's PM10 levels, when it was all said and done, reached the Very Unhealthy (purple) category on the Air Quality Index (based on the 24-hour average).
Unfortunately, Yuma is not out of the woods quite yet. A quick-moving low-pressure disturbance will dive southward into Arizona and New Mexico today and induce strong winds down the Colorado River Valley. Given the strength of the winds, and how dry it has been, blowing dust is expected, and PM10 will have the potential to exceed the federal health standard. Therefore, a PM10 High Pollution Advisory is in effect for today. PM2.5 (smoke) levels will also be elevated today, but because of the dust.
After today, things will finally start to calm down. Winds will lighten up, and we'll also have a cooler air mass in place, keeping daytime temperatures around or below normal (which is about 69°F this time of year for Yuma). In general, PM10 and PM2.5 will return to mostly locally driven. The main exception will be Sunday afternoon, when northerly breezes may result in elevated PM10 levels--but nothing like yesterday's or today's expected PM10.
Check back tomorrow morning for the next forecast.
M. Graves
https://azdeq.gov/forecast/yuma
Last Update: Thursday, January 9, 2025, 8:04 AM
Primary Pollutant: PM10 - 115 Unhealthy for Sensitive Groups
Secondary Pollutant: OZONE - 32 Good
Secondary Pollutant: PM2.5 - 66 Moderate
Primary Pollutant: PM10 - 52 Moderate
Secondary Pollutant: OZONE - 32 Good
Secondary Pollutant: PM2.5 - 48 Good
Primary Pollutant: PM10 - 44 Good
Secondary Pollutant: OZONE - 34 Good
Secondary Pollutant: PM2.5 - 43 Good
Primary Pollutant: PM10 - 52 Moderate
Secondary Pollutant: OZONE - 33 Good
Secondary Pollutant: PM2.5 - 47 Good
Primary Pollutant: PM2.5 - 51 Moderate
Secondary Pollutant: OZONE - 34 Good
Secondary Pollutant: PM10 - 51 Moderate