The Arizona Department of Environmental Quality has issued an Ozone High Pollution Advisory (HPA) for Saturday, May 10 and Sunday, May 11, 2025.
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The Arizona Department of Environmental Quality has issued an Ozone High Pollution Advisory (HPA) for Thursday, May 8 and Friday, May 9, 2025.
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The Arizona Department of Environmental Quality has issued an Ozone High Pollution Advisory (HPA) for Thursday, May 8, 2025.
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The Arizona Department of Environmental Quality has issued an Ozone High Pollution Advisory (HPA) for Friday, May 2, 2025, and a PM10 HPA for Sunday, May 4, 2025.
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The Arizona Department of Environmental Quality has issued an Ozone High Pollution Advisory (HPA) for Wednesday, April 30, 2025.
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The Arizona Department of Environmental Quality has issued an Ozone High Pollution Advisory (HPA) for Thursday, April 10 and Friday, April 11, 2025.
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The Arizona Department of Environmental Quality has issued an Ozone High Pollution Advisory (HPA) for Wednesday, April 9, 2025.
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Alert: PM10 and PM2.5 High Pollution Advisories in effect for Phoenix on Thursday, December 19, 2024
Forecast Discussion
Unfortunately, PM10 and PM2.5 reached the Unhealthy for Sensitive Groups (USG) AQI category again yesterday. Today, we expect similar weather conditions. As a result, there is potential for both pollutants to reach the USG category again today. Therefore, we are issuing a PM10 and PM2.5 High Pollution Advisory for today.