Phoenix Air Quality Reaches Unhealthy Level for PM10
Areazine synthesizes this EPA air-quality advisory directly from EPA's official public data feed. See our methodology for full source attribution and refresh cadence.
Air quality in Phoenix, AZ, has reached an AQI of 157 (Unhealthy) on March 3, 2026, with PM10 identified as the primary pollutant.
What this EPA air-quality advisory tells you, and what most readers miss
This notice was issued by EPA on April 6, 2026 and geographically references Phoenix, AZ. Its severity classification of "medium" signals how the issuing agency weighs the risk of harm if no action is taken - "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to - Air Quality - determines the informational context it sits in, and which agency or body is the authoritative source for updates.
Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to verify its scope, source, and timestamp, then compare related notices without assuming that one record proves a broader trend.
Areazine pairs this record with the original agency URL so you can check the primary source before acting. Its related labels are air-quality, epa, aqi, Phoenix.
Current Air Quality
In Phoenix, AZ, the air quality recorded on March 3, 2026, reached an Air Quality Index (AQI) of 157. The primary pollutant is PM10, which is classified as Unhealthy. Other pollutants measured include PM2.5 with an AQI of 78 (Moderate) and Ozone (O3) with an AQI of 36 (Good).
What This Means
An AQI in the Unhealthy range (151-200) indicates that members of the general public may begin to experience health effects. Members of sensitive groups may experience more serious health effects from exposure to the air.
Who Should Take Precautions
Sensitive groups, including people with heart or lung disease, older adults, children, and teenagers, are at the highest risk. However, when air quality reaches the Unhealthy category, the general public may also be affected.
What You Should Do
For PM10 levels in the Unhealthy category, the EPA recommends that everyone reduce prolonged or heavy exertion. Sensitive groups should avoid prolonged or heavy exertion and consider moving activities indoors or rescheduling them to a time when air quality has improved.
Source
Data provided by EPA AirNow.
Original source: EPA Official Notice ↗
Related Air Quality
All Air Quality →Frequently Asked Questions
Common questions about this EPA air-quality advisory.