An active weather pattern will be in store for Arizona this week and into the weekend as low-pressure waves over the region. The first one will maintain southwesterly (out of the southwest) breezes this afternoon and tomorrow afternoon. The next one will result in another round of similar winds on Monday. In between the waves, winds will become light again, and rain chances will enter the forecast. Right now, the window for rain looks to be later Saturday and/or Sunday (a lot of uncertainty in the timing, still). Temperatures will also decrease below 100 over the next few days.

Air quality-wise, smoke from California wildfires is still present, evidenced by elevated PM2.5 around Tucson this morning. Since smoke can enhance ozone production, ozone is forecast in the Moderate AQI today. After today though, if smoke is cleared out, the active weather pattern is expected to help limit ozone levels. Therefore, ozone is forecast in the Good AQI category for the remainder of the period.

PM10 (dust) and PM2.5 (smoke) are forecast in the Good AQI category each day.

Check back tomorrow for the latest!

- M. Graves
ADEQ Meteorologist