After last night's dust storm, there was rapid improvement aided by some rainfall - though modest in most places that received it. Storm activity over southern Arizona later today is expected to be quite a bit less than yesterday and so another dust storm is not expected tonight. Thus, the 24 hour average PM10 today is expected to be in the Good range. In general, storm activity over the next few days is expected to be primarily over northern Arizona which will limit blowing dust potential over Western Pinal County. There may be an uptick in storm coverage over southeast AZ later in the workweek. But at this time, uncertainty in how that will play out will preclude pinpointing any blowing dust episodes for the late week time frame. For now, anticipate largely routine conditions with short lived period of somewhat elevated hourly readings in the mornings and evenings (associated with local activities such as agriculture) happening during times of day with a temperature inversion in place. As the beneficial effects of rainfall wear off, this will lead to conditions going from the Good category today through Wednesday to the low Moderate range Thursday and Friday. 24 hour average PM2.5 values will follow a similar pattern.

Peak 8 hour average Ozone values took a dip on Sunday and will start to rebound today with an additional increase Tuesday but are expected to remain in the Moderate range. Conditions in the Moderate range are expected to continue the rest of the workweek.

- A. Jamison
ADEQ Meteorologist