Tucson Forecast

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Air Quality Hourly Forecast | Tucson

Click on each day to view forecast.

Friday Forecast:


Ozone

51 AQI
Max 8-hr Avg: 55 ppb

PM10

38 AQI
24-hr Avg: 41 µg/m3

PM2.5

33 AQI
24-hr Avg: 8.0 µg/m3

Saturday Forecast:


Ozone

47 AQI
Max 8-hr Avg: 51 ppb

PM10

41 AQI
24-hr Avg: 44 µg/m3

PM2.5

36 AQI
24-hr Avg: 8.7 µg/m3

Sunday Forecast:


Ozone

46 AQI
Max 8-hr Avg: 50 ppb

PM10

46 AQI
24-hr Avg: 50 µg/m3

PM2.5

35 AQI
24-hr Avg: 8.4 µg/m3

Monday Forecast:


Ozone

45 AQI
Max 8-hr Avg: 49 ppb

PM10

47 AQI
24-hr Avg: 51 µg/m3

PM2.5

38 AQI
24-hr Avg: 9.0 µg/m3

Tuesday Forecast:


Ozone

54 AQI
Max 8-hr Avg: 56 ppb

PM10

33 AQI
24-hr Avg: 36 µg/m3

PM2.5

33 AQI
24-hr Avg: 7.9 µg/m3

Air Quality By Pollutant:

Pollutant
Friday
5/27/2022
Saturday
5/28/2022
Sunday
5/29/2022
Monday
5/30/2022
Tuesday
5/31/2022
O3
51
47
46
45
54
PM10
38
41
46
47
33
PM2.5
33
36
35
38
33
Pollutant
FRI
SAT
SUN
MON
TUE
O3
51
47
46
45
54
PM10
38
41
46
47
33
PM2.5
33
36
35
38
33
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

This morning (Friday), the weather pattern over Arizona will transition from high pressure to low pressure. As a result, winds are forecast to pick up out of the west-southwest this afternoon. In regards to air quality, ozone is still forecast in the Moderate Air Quality Index (AQI) category today since there will be time in the morning for ozone to build up locally. Pockets of dust may also be possible in the afternoon, but PM10 (dust) should easily stay in the Good AQI category.

Looking ahead, Saturday through Monday, the jet stream will dig into the Southwest. This will result in breezy conditions each day, with winds generally out of the southwest. The good news is that these winds will help to reduce ozone levels. However, on the flip side, winds will increase the potential for wind-blown dust. Therefore, hourly forecast PM10 levels have been raised each afternoon. PM10 is still forecast in the Good AQI category, though.

Finally, by Tuesday, winds are forecast to weaken as the jet stream begins to exit the region. Ozone should trend upwards, while PM10 (and PM2.5) become mostly locally driven again.

- M. Graves
ADEQ Meteorologist


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