Tucson Forecast

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Air Quality Hourly Forecast | Tucson

Click on each day to view forecast.

Wednesday Forecast:


Ozone

40 AQI
Max 8-hr Avg: 43 ppb

PM10

26 AQI
24-hr Avg: 28 µg/m3

PM2.5

38 AQI
24-hr Avg: 9.2 µg/m3

Thursday Forecast:


Ozone

42 AQI
Max 8-hr Avg: 45 ppb

PM10

23 AQI
24-hr Avg: 25 µg/m3

PM2.5

40 AQI
24-hr Avg: 9.5 µg/m3

Friday Forecast:


Ozone

37 AQI
Max 8-hr Avg: 40 ppb

PM10

17 AQI
24-hr Avg: 18 µg/m3

PM2.5

29 AQI
24-hr Avg: 7.0 µg/m3

Saturday Forecast:


Ozone

39 AQI
Max 8-hr Avg: 42 ppb

PM10

19 AQI
24-hr Avg: 20 µg/m3

PM2.5

33 AQI
24-hr Avg: 7.9 µg/m3

Sunday Forecast:


Ozone

38 AQI
Max 8-hr Avg: 41 ppb

PM10

19 AQI
24-hr Avg: 21 µg/m3

PM2.5

34 AQI
24-hr Avg: 8.1 µg/m3

Air Quality By Pollutant:

Pollutant
Wednesday
1/27/2021
Thursday
1/28/2021
Friday
1/29/2021
Saturday
1/30/2021
Sunday
1/31/2021
O3
40
42
37
39
38
PM10
26
23
17
19
19
PM2.5
38
40
29
33
34
Pollutant
WED
THU
FRI
SAT
SUN
O3
40
42
37
39
38
PM10
26
23
17
19
19
PM2.5
38
40
29
33
34
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

Hopefully you have enjoyed the last few rainy/snowy days! Yesterday snowfall accumulation values varied from 1 inch to 3.5 inches across Pima County. The water equivalent recorded at the Tucson International Airport was .26 inches. There were some cool overnight temperatures and just as a reminder the National Weather Service has issued a Hard Freeze Warning until 9:00 am today. Roads could still be slick this morning so drive carefully!

We should be seeing mostly sunny skies today with the storm system out of the region. Winds will be from the east and a little breezy but not nearly as strong as what we've been seeing. Our temperatures will begin to rise through the remaining part of the work week as we see a high-pressure system form right over the 4 corners region. Do we have another chance for precipitation soon? Yes! On Friday another storm system will be moving through the state bringing some additional moisture to what we've already seen. Showers aren't expected to start until the evening and rainfall totals will be around 0.05 to 0.15 inches.

Looking ahead for your weekend, Saturday will be a little cooler with temperatures reaching just shy of 60 degrees and light winds. Sunday we should see about a 10 degree temperature rise and continuing light winds as a high-pressure system moves over the region. Overall, should be a nice weekend!

As for air quality, we should see PM10 (dust) and PM2.5 (smoke) remain in the Good Air Quality Index (AQI) range for the forecast period. With the recent precipitation, pockets of blowing dust aren't likely but are still possible with the saturated ground. There is a potential for elevated smoke levels due to light winds and increased fireplace activity with the cooler temperatures. These higher values will be short lived and not of concern. Ozone will also remain the Good AQI range through Sunday.

- P. Swenson
ADEQ Meteorologist


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