Tucson Forecast

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Air Quality Hourly Forecast | Tucson

Click on each day to view forecast.

Friday Forecast:


Ozone

61 AQI
Max 8-hr Avg: 58 ppb

PM10

26 AQI
24-hr Avg: 28 µg/m3

Saturday Forecast:


Ozone

58 AQI
Max 8-hr Avg: 57 ppb

PM10

25 AQI
24-hr Avg: 27 µg/m3

Sunday Forecast:


Ozone

54 AQI
Max 8-hr Avg: 56 ppb

PM10

26 AQI
24-hr Avg: 28 µg/m3

Monday Forecast:


Ozone

48 AQI
Max 8-hr Avg: 52 ppb

PM10

25 AQI
24-hr Avg: 27 µg/m3

Tuesday Forecast:


Ozone

50 AQI
Max 8-hr Avg: 54 ppb

PM10

26 AQI
24-hr Avg: 28 µg/m3

Air Quality By Pollutant:

Pollutant
Friday
8/14/2020
Saturday
8/15/2020
Sunday
8/16/2020
Monday
8/17/2020
Tuesday
8/18/2020
O3
61
58
54
48
50
PM10
26
25
26
25
26
Pollutant
FRI
SAT
SUN
MON
TUE
O3
61
58
54
48
50
PM10
26
25
26
25
26
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

Thunderstorms in the area yesterday evening resulted in some brief blowing dust and rain. PM10 (dust) levels were elevated at several monitors, but quickly fell back down because of the rain (it wasn't much). Ozone levels ended up in the Moderate Air Quality Index (AQI) category for the second day in a row, too.

Looking ahead, the monsoonal high pressure will gradually center itself over Arizona today and then slide northward into the AZ/NV/UT region over the weekend. It will then remain in that general area through at least Tuesday (in other words, it won't move much).

What does this mean for Tucson? Well, thunderstorms look to be possible in/around the Tucson area each evening over the next several days. But this time, thunderstorms will move from northeast to southwest through the area. Similar to yesterday, gusty winds could affect the Tucson area and result in brief blowing dust out ahead of thunderstorms; but any rain would help to knock dust back down afterwards. In all, PM10 should still remain in the Good AQI category.

Ozone is a little trickier to forecast as it will depend on the timing of thunderstorms (and how quickly leftover clouds can disperse in the mornings). If clouds, winds, and/or rain occur early enough, they could help to reduce ozone. But if they occur later in the day, ozone will have more time to reach its peak. Ozone is forecast in the Moderate AQI category at least through the weekend. Then by Monday, stronger winds out of the east are expected to help decrease ozone.

- M. Graves
ADEQ Meteorologist


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Friday: Yellow
Saturday: Yellow

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