The highest AQ index in Arizona (as of 11:00 MST) is currently the Nogales area. Particle Pollution (PM2.5) is measuring at 76 (Moderate). This means air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Over the next few days, the highest Particle Pollution (PM2.5) will be in the Phoenix area. It is forecasted to be Moderate, meaning air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
[View the ADEQ Hourly Forecast for Phoenix]
There were no surprises with the air quality yesterday. Ozone and PM10 levels ended up in the Good AQI range, while PM2.5 stayed in the Moderate category. Looking ahead at the weather, we are still forecasting a weather system to sweep through the state on Wednesday and Thursday. With with system we expect rain chances to begin around mid day on Wednesday and continue into Thursday. As for the other days, we expect fairly calm weather conditions.
Looking at the air quality, we don't expect any significant issues. We should see some improvement to pollution levels later on Wednesday and into Thursday due to the rain. Other than that though, we don't expect a whole lot of change from what we've seen the past couple days.
R. Nicoll
https://azdeq.gov/forecast/phoenix
Last Update: Tuesday, January 6, 2026, 9:01 AM
| Range | 0 - 50 | 51 - 100 | 101 - 150 | 151 - 200 | 201 - 300 | 301 - 500 |
| Color | ||||||
| Category | Good | Moderate | Unhealthy for Sensitive Groups | Unhealthy | Very Unhealthy | Hazardous |
Last Updated 7 minutes ago