Tucson Forecast

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Air Quality Hourly Forecast | Tucson

Click on each day to view forecast.

Friday Forecast:


Ozone

35 AQI
Max 8-hr Avg: 38 ppb

PM10

48 AQI
24-hr Avg: 52 µg/m3

PM2.5

53 AQI
24-hr Avg: 13.0 µg/m3

Saturday Forecast:


Ozone

33 AQI
Max 8-hr Avg: 36 ppb

PM10

48 AQI
24-hr Avg: 52 µg/m3

PM2.5

47 AQI
24-hr Avg: 11.2 µg/m3

Sunday Forecast:


Ozone

35 AQI
Max 8-hr Avg: 38 ppb

PM10

41 AQI
24-hr Avg: 44 µg/m3

PM2.5

44 AQI
24-hr Avg: 10.6 µg/m3

Monday Forecast:


Ozone

35 AQI
Max 8-hr Avg: 38 ppb

PM10

42 AQI
24-hr Avg: 45 µg/m3

PM2.5

47 AQI
24-hr Avg: 11.3 µg/m3

Tuesday Forecast:


Ozone

32 AQI
Max 8-hr Avg: 35 ppb

PM10

39 AQI
24-hr Avg: 42 µg/m3

PM2.5

38 AQI
24-hr Avg: 9.0 µg/m3

Air Quality By Pollutant:

Pollutant
Friday
1/15/2021
Saturday
1/16/2021
Sunday
1/17/2021
Monday
1/18/2021
Tuesday
1/19/2021
O3
35
33
35
35
32
PM10
48
48
41
42
39
PM2.5
53
47
44
47
38
Pollutant
FRI
SAT
SUN
MON
TUE
O3
35
33
35
35
32
PM10
48
48
41
42
39
PM2.5
53
47
44
47
38
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

This morning, water vapor shows strong high pressure continuing to dominate the weather pattern across the Southwestern United States. For the most part, high pressure will be the name of the game through Sunday, with the exception of a very weak disturbance that will quickly brush through the state tomorrow (Saturday). This pattern will keep the well above average high temperatures in play and light winds, with the exception of some increased north breezes tomorrow as the system sweeps through.

The north-northeast breezes tomorrow may result in slightly elevated PM-10 levels in the afternoon, so have raised concentrations during the afternoon hours.

Changes begin to take shape as we head into the first part of next week. An area of low pressure is forecast to drop southward through Arizona and into the northern portion of Mexico Monday into Tuesday. It will continue to spin along the coast of Northern Baja Wednesday. While this system will initially have very little moisture with it, as it spins over Baja, it will likely be able to pull up some subtropical moisture and usher it into Arizona starting Tuesday. As a result, rain chances are forecast to increase Tuesday into Wednesday. There is still plenty of uncertainty in just how much moisture this system will draw up into the state; however, right now, it looks like rain totals could be in the 0.25-0.75 inch range.

This system will also help drop afternoon high temperatures back into the mid to low 60s Tuesday into the end of next week.

Finally, gusty east/southeast winds will be possible on Tuesday, which may initially kick up some isolated pockets of blowing dust before the rain moves in later in the day to settle any dust that is generated.

Have a great weekend!

- M. Pace
ADEQ Meteorologist


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