Tucson Forecast

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Air Quality Hourly Forecast | Tucson

Click on each day to view forecast.

Friday Forecast:


Ozone

45 AQI
Max 8-hr Avg: 49 ppb

PM10

21 AQI
24-hr Avg: 23 µg/m3

PM2.5

26 AQI
24-hr Avg: 6.3 µg/m3

Saturday Forecast:


Ozone

46 AQI
Max 8-hr Avg: 50 ppb

PM10

23 AQI
24-hr Avg: 25 µg/m3

PM2.5

25 AQI
24-hr Avg: 6.0 µg/m3

Sunday Forecast:


Ozone

47 AQI
Max 8-hr Avg: 51 ppb

PM10

27 AQI
24-hr Avg: 29 µg/m3

PM2.5

29 AQI
24-hr Avg: 6.9 µg/m3

Monday Forecast:


Ozone

49 AQI
Max 8-hr Avg: 53 ppb

PM10

29 AQI
24-hr Avg: 31 µg/m3

PM2.5

31 AQI
24-hr Avg: 7.4 µg/m3

Tuesday Forecast:


Ozone

51 AQI
Max 8-hr Avg: 55 ppb

PM10

30 AQI
24-hr Avg: 32 µg/m3

PM2.5

32 AQI
24-hr Avg: 7.7 µg/m3

Air Quality By Pollutant:

Pollutant
Friday
9/30/2022
Saturday
10/1/2022
Sunday
10/2/2022
Monday
10/3/2022
Tuesday
10/4/2022
O3
45
46
47
49
51
PM10
21
23
27
29
30
PM2.5
26
25
29
31
32
Pollutant
FRI
SAT
SUN
MON
TUE
O3
45
46
47
49
51
PM10
21
23
27
29
30
PM2.5
26
25
29
31
32
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

The disturbance to the south of the Arizona border has been in place for the last couple of days churning out isolated thunderstorms in the Patagonia mountains. Some precipitation managed to reach the Tucson area this week, with chances for more rainfall this evening. Some storms in the area may even be severe producing strong/brief wind gusts at the surface. Air quality wise, this can affect PM10 (dust) levels. Outflow boundaries from pulse like thunderstorms can kick up surface PM10 and force dust outwards from the storm. This potential is illustrated on today's forecast for this evening. In regards to ozone, levels should remain in the Good AQI category, as they were yesterday.

Moving forward, the disturbance to the south will remain locked in its place until the beginning of next week. This means that Tucson will have chances for a scattered shower or two for every evening this weekend. However, rain chances diminish day by day as more moisture is used up. Instead of ample cloud cover like we have seen in the past few days, sunny skies will start your mornings with chances for showers in the evenings. What that means in regards to air quality is that ozone levels will begin to slowly rise as more sunlight will reach the surface (ozone needs sunlight to form). Next week we could see chances for ozone to reach near Moderates as wind direction switches to more variable, but for now it is forecasted to remain in the Good AQI category for the rest of the weekend. PM10 and PM2.5 (smoke) levels are also expected to remain in the Good AQI category, but some brief spikes in particulate levels are possible due to chances of outflow boundaries reaching Tucson over the next few days. Other than this potential, other changes in particulate levels will be mainly influenced by local activity.

- B. Droppleman
ADEQ Meteorologist


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