Tucson Forecast

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Air Quality Hourly Forecast | Tucson

Click on each day to view forecast.

Wednesday Forecast:


Ozone

48 AQI
Max 8-hr Avg: 52 ppb

PM10

23 AQI
24-hr Avg: 25 µg/m3

Thursday Forecast:


Ozone

49 AQI
Max 8-hr Avg: 53 ppb

PM10

25 AQI
24-hr Avg: 27 µg/m3

Friday Forecast:


Ozone

51 AQI
Max 8-hr Avg: 55 ppb

PM10

26 AQI
24-hr Avg: 28 µg/m3

Saturday Forecast:


Ozone

51 AQI
Max 8-hr Avg: 55 ppb

PM10

23 AQI
24-hr Avg: 25 µg/m3

Sunday Forecast:


Ozone

54 AQI
Max 8-hr Avg: 56 ppb

PM10

22 AQI
24-hr Avg: 24 µg/m3

Air Quality By Pollutant:

Pollutant
Wednesday
8/12/2020
Thursday
8/13/2020
Friday
8/14/2020
Saturday
8/15/2020
Sunday
8/16/2020
O3
48
49
51
51
54
PM10
23
25
26
23
22
Pollutant
WED
THU
FRI
SAT
SUN
O3
48
49
51
51
54
PM10
23
25
26
23
22
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

Today and Thursday, the monsoonal high pressure will remain centered to the east of Arizona (generally over New Mexico). This will result in a southerly flow into Arizona. A southerly flow means a tap into moisture--and moisture is one of the ingredients for thunderstorms. Therefore, thunderstorms will be possible in/around the Tucson area both days.

Then on Friday, the monsoonal high pressure will migrate westward and its center will land right over Arizona. Its center will then generally remain over the state through Saturday and then shift northward to Utah on Sunday. During this time, thunderstorm chances look to diminish as the moisture tap weakens. High temperatures will respond by increasing, peaking on Friday at 110°F. The National Weather Service has issued an Excessive Heat Warning for Thursday through Sunday.

Air quality-wise, ozone levels in Tucson are forecast in the Good Air Quality Index (AQI) category through at least Thursday. But as the high pressure moves more over Arizona, there may be a potential for ozone levels to increase. Therefore, ozone is forecast in the Moderate AQI category after that, for now.

No concerns with PM10 (dust) are anticipated this week.

- M. Graves
ADEQ Meteorologist


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Wednesday: Green
Thursday: Green

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