Phoenix Air Quality Alert: PM10 Levels Reach Unhealthy for Sensitive Groups Category
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.
On February 17, 2026, air quality in Phoenix, AZ reached an AQI of 143 for PM10, categorized as Unhealthy for Sensitive Groups.
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 "low" 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
As of February 17, 2026, the air quality in the Phoenix, AZ reporting area has reached a level categorized as Unhealthy for Sensitive Groups. The primary pollutant of concern is PM10, which recorded an Air Quality Index (AQI) value of 143.
Other observed pollutants in the area include:
- PM2.5: AQI 66 (Moderate)
- Ozone (O3): AQI 32 (Good)
What This Means
An AQI value between 101 and 150 is classified by the EPA as "Unhealthy for Sensitive Groups." At this level, members of sensitive groups may experience health effects, though the general public is less likely to be affected.
Who Should Take Precautions
The following groups are at increased risk from PM10 (particle pollution) exposure at this level:
- People with heart or lung disease
- Older adults
- Children and teenagers
What You Should Do
If you are in a sensitive group, you should reduce prolonged or heavy exertion outdoors. While it is generally safe for the public to be active outside, those at risk should take more breaks, engage in less intense activities, and monitor for symptoms such as coughing or shortness of breath.
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.