Tucson Forecast

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Air Quality Hourly Forecast | Tucson

Click on each day to view forecast.

Thursday Forecast:


Ozone

43 AQI
Max 8-hr Avg: 46 ppb

PM10

35 AQI
24-hr Avg: 38 µg/m3

PM2.5

40 AQI
24-hr Avg: 9.5 µg/m3

Friday Forecast:


Ozone

44 AQI
Max 8-hr Avg: 47 ppb

PM10

37 AQI
24-hr Avg: 40 µg/m3

PM2.5

38 AQI
24-hr Avg: 9.1 µg/m3

Saturday Forecast:


Ozone

42 AQI
Max 8-hr Avg: 45 ppb

PM10

31 AQI
24-hr Avg: 33 µg/m3

PM2.5

28 AQI
24-hr Avg: 6.6 µg/m3

Sunday Forecast:


Ozone

41 AQI
Max 8-hr Avg: 44 ppb

PM10

32 AQI
24-hr Avg: 35 µg/m3

PM2.5

31 AQI
24-hr Avg: 7.4 µg/m3

Monday Forecast:


Ozone

42 AQI
Max 8-hr Avg: 45 ppb

PM10

33 AQI
24-hr Avg: 36 µg/m3

PM2.5

36 AQI
24-hr Avg: 8.6 µg/m3

Air Quality By Pollutant:

Pollutant
Thursday
2/25/2021
Friday
2/26/2021
Saturday
2/27/2021
Sunday
2/28/2021
Monday
3/1/2021
O3
43
44
42
41
42
PM10
35
37
31
32
33
PM2.5
40
38
28
31
36
Pollutant
THU
FRI
SAT
SUN
MON
O3
43
44
42
41
42
PM10
35
37
31
32
33
PM2.5
40
38
28
31
36
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

Another warmer than average day was seen in Tucson yesterday. Temperatures reached 79 degrees which is 9 degrees above the normal value and 12 degrees above what we saw this time last year. A few breezy winds were seen in the afternoon out of the northwest and light winds throughout the rest of the day. Overall, ozone, PM10 (dust), and PM2.5 (smoke) registered in at the Good Air Quality Index (AQI) category for your Wednesday.

Today that low-pressure system has moved into our region. Winds have shifted to a southeasterly flow and we will see a slight drop in temperatures. This disturbance is dry and short-lived, so it will be making its way out of Arizona by the end of the day. With the exit of this system, we will see breezy west-northwest winds later today. Tomorrow, a weak trough will begin to form over the western United States. Initially, it will have a greater impact on the northwestern states but it will deepen over the weekend. Until then, enjoy temperatures in the low 70s for the next couple of days.

Looking ahead to the weekend, things will be relatively calm weather-wise until we get into Sunday afternoon/evening. The low-pressure system will begin to deepen into Arizona at the tail end of your weekend. Unfortunately, no rain will be brought to the southern portion of our state. Just cooler temperatures and breezy west winds.

We'll be starting March off with a high-pressure system moving through. It looks like it will stay into much of next week so be ready for some more warm temperatures!

As for air quality, all three particulates (ozone, PM10, PM2.5) are forecast to remain in the Good AQI. With the breezy winds tonight and Sunday night, we could see elevated levels of dust and smoke but nothing that will be of concern. Anything that may get picked up will be isolated and short-lived.

Have a great day!

- P. Swenson
ADEQ Meteorologist


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