Tucson Forecast

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Air Quality Hourly Forecast | Tucson

Click on each day to view forecast.

Tuesday Forecast:


Ozone

48 AQI
Max 8-hr Avg: 52 ppb

PM10

36 AQI
24-hr Avg: 39 µg/m3

PM2.5

31 AQI
24-hr Avg: 7.5 µg/m3

Wednesday Forecast:


Ozone

51 AQI
Max 8-hr Avg: 55 ppb

PM10

34 AQI
24-hr Avg: 37 µg/m3

PM2.5

32 AQI
24-hr Avg: 7.6 µg/m3

Thursday Forecast:


Ozone

58 AQI
Max 8-hr Avg: 57 ppb

PM10

35 AQI
24-hr Avg: 38 µg/m3

PM2.5

33 AQI
24-hr Avg: 7.9 µg/m3

Friday Forecast:


Ozone

48 AQI
Max 8-hr Avg: 52 ppb

PM10

39 AQI
24-hr Avg: 42 µg/m3

PM2.5

34 AQI
24-hr Avg: 8.1 µg/m3

Saturday Forecast:


Ozone

47 AQI
Max 8-hr Avg: 51 ppb

PM10

40 AQI
24-hr Avg: 43 µg/m3

PM2.5

35 AQI
24-hr Avg: 8.5 µg/m3

Air Quality By Pollutant:

Pollutant
Tuesday
5/24/2022
Wednesday
5/25/2022
Thursday
5/26/2022
Friday
5/27/2022
Saturday
5/28/2022
O3
48
51
58
48
47
PM10
36
34
35
39
40
PM2.5
31
32
33
34
35
Pollutant
TUE
WED
THU
FRI
SAT
O3
48
51
58
48
47
PM10
36
34
35
39
40
PM2.5
31
32
33
34
35
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

Weather maps this morning reveal that Arizona is situated between a departing low pressure wave to the east and an approaching high pressure to the west. As this changeover happens, winds will shift to out of the northwest this afternoon in Tucson. In terms of air quality, these winds won't be strong enough to cause any major PM10 (dust) concerns, though we can't rule out dust from dust-prone areas. Winds should also help to limit ozone in the Good Air Quality Index (AQI) category again.

Then for tomorrow and Thursday, high pressure will call the shots over Arizona, resulting in lighter afternoon winds and increasing temperatures in Tucson. Ozone will have the potential to rise back into the Moderate AQI category. PM10 will become mostly locally driven.

Then by Friday, another low pressure wave will begin to push the high pressure to the east, opening the door for winds to increase out of the southwest. Breezes on both Friday and Saturday afternoon should help to reduce ozone levels, but will re-introduce a potential for wind-blown dust. Ozone should trend downwards during this time, while PM10 trends upwards.

PM2.5 (smoke) should generally follow PM10 trends each day.

- M. Graves
ADEQ Meteorologist


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