health watch

The Arizona Department of Environmental Quality (ADEQ) is issuing a PM-10 Health Watch for Maricopa County, effective Thursday, September 21, 2017. This health watch is due to pollution levels expected to approach the federal health standard.

This health watch includes the following restrictions:
Open burning and wood burning fireplace activity is restricted in Maricopa County. This includes individuals and businesses which have burn permits for open burning.

Please take action during the health watch by following the tips below:

The Arizona Department of Environmental Quality (ADEQ) is issuing an Ozone High Pollution Advisory (HPA) for Maricopa County, effective Monday and Tuesday, June 19-20, 2017. This HPA is due to ozone levels expected to accumulate enough to exceed the federal health standard for ozone.

The Arizona Department of Environmental Quality (ADEQ) is issuing an Ozone High Pollution Advisory (HPA) for Maricopa County, effective Friday, June 16, 2017. This HPA is due to ozone levels expected to accumulate enough to exceed the federal health standard for ozone.

The Arizona Department of Environmental Quality (ADEQ) is issuing an Ozone High Pollution Advisory (HPA) for Maricopa County, effective Friday, June 2, 2017. This HPA is due to ozone levels expected to accumulate enough to exceed the federal health standard for ozone.

The Arizona Department of Environmental Quality (ADEQ) has issued a same day Health Watch for today, June 1, and a High Pollution Advisory (HPA) for Thursday, June 2, for ozone in Maricopa County.

An Ozone Health Watch means that ozone levels are expected to near the federal health standard. Tomorrow, ozone levels around the Valley are expected to increase with highest ozone levels concentrating in north and northeast portions of the Valley.

The Arizona Department of Environmental Quality (ADEQ) has issued an ozone Health Watch for tomorrow, May 13, for areas in and bordering Maricopa County.

Stable weather conditions will remain over the region Friday; therefore, there will not be a High Pollution Advisory. However, ozone is expected to approach the federal health standard. By Saturday, a trough to the west will begin to move into the area causing ventilation to improve.

The Arizona Department of Environmental Quality (ADEQ) has issued a Particulate Matter (PM)-10 Health Watch for tomorrow, May 5, for Maricopa County.

By Thursday, winds are expected to be strong enough to result in Valley-wide blowing dust. Similar to our last significantly windy day (Monday, April 25), a general haze is likely to be seen in the air.

The Arizona Department of Environmental Quality (ADEQ) has issued a particulate matter (PM)-2.5 Health Watch for Wednesday, Dec. 9, for areas within and bordering Maricopa County in Arizona.

The Arizona Department of Environmental Quality (ADEQ) has issued a PM-10 Health Watch for Tuesday, June 30, for areas in and bordering Maricopa County.

ADEQ issues a watch when the highest concentration of ozone or particulate matter levels may exceed the federal health standard.

The Arizona Department of Environmental Quality (ADEQ) has issued a PM-10 Health Watch for Saturday, June 27, for areas in and bordering Maricopa County.

ADEQ issues a watch when the highest concentration of ozone or particulate matter levels may exceed the federal health standard.