AQD | Tucson Forecast
Updated On: 9/9/2024 - 8:10 AM
Click on each day to view forecast.
Monday Forecast:
Ozone
67 AQI
Max 8-hr Avg: 60 ppb
Max 8-hr Avg: 60 ppb
PM10
21 AQI
24-hr Avg: 23 µg/m3
24-hr Avg: 23 µg/m3
PM2.5
33 AQI
24-hr Avg: 5.9 µg/m3
24-hr Avg: 5.9 µg/m3
Tuesday Forecast:
Ozone
64 AQI
Max 8-hr Avg: 59 ppb
Max 8-hr Avg: 59 ppb
PM10
23 AQI
24-hr Avg: 25 µg/m3
24-hr Avg: 25 µg/m3
PM2.5
28 AQI
24-hr Avg: 5.1 µg/m3
24-hr Avg: 5.1 µg/m3
Wednesday Forecast:
Ozone
61 AQI
Max 8-hr Avg: 58 ppb
Max 8-hr Avg: 58 ppb
PM10
24 AQI
24-hr Avg: 26 µg/m3
24-hr Avg: 26 µg/m3
PM2.5
29 AQI
24-hr Avg: 5.2 µg/m3
24-hr Avg: 5.2 µg/m3
Thursday Forecast:
Ozone
46 AQI
Max 8-hr Avg: 50 ppb
Max 8-hr Avg: 50 ppb
PM10
26 AQI
24-hr Avg: 28 µg/m3
24-hr Avg: 28 µg/m3
PM2.5
33 AQI
24-hr Avg: 5.9 µg/m3
24-hr Avg: 5.9 µg/m3
Friday Forecast:
Ozone
47 AQI
Max 8-hr Avg: 51 ppb
Max 8-hr Avg: 51 ppb
PM10
22 AQI
24-hr Avg: 24 µg/m3
24-hr Avg: 24 µg/m3
PM2.5
32 AQI
24-hr Avg: 5.7 µg/m3
24-hr Avg: 5.7 µg/m3
Air Quality By Pollutant:
Pollutant
Monday
9/9/2024
9/9/2024
Tuesday
9/10/2024
9/10/2024
Wednesday
9/11/2024
9/11/2024
Thursday
9/12/2024
9/12/2024
Friday
9/13/2024
9/13/2024
O3
67
64
61
46
47
PM10
21
23
24
26
22
PM2.5
33
28
29
33
32
Pollutant
MON
TUE
WED
THU
FRI
O3
67
64
61
46
47
PM10
21
23
24
26
22
PM2.5
33
28
29
33
32
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns
Forecast Discussion:
This time of year, the monsoon season starts to wind down, thanks to more westerly (out of the west) atmospheric flow over the Southwest. This also includes an increasing presence of low-pressure waves in/around the region, which progressively shove our monsoonal high pressure out. Thus, our hopes for any appreciable rainfall fall more on the narrow possibility of a tropical system infusing moisture into the atmosphere. This might happen briefly early next work week.
In the meantime, at least for today through Wednesday, ozone is forecast in the Moderate AQI category in Tucson. This is because of Moderate ozone levels over the weekend, and high pressure overhead during the next couple days. However, a low-pressure wave over the Northwest will extend southward into Arizona beginning Thursday and is expected to help disperse ozone. Therefore, ozone is forecast in the Good AQI category Thursday and Friday.
In regards to particulate matter, both PM10 (dust) and PM2.5 (smoke) are forecast in the Good AQI category each day this week.
Check back tomorrow for the latest!
- M. Graves
ADEQ Meteorologist
In the meantime, at least for today through Wednesday, ozone is forecast in the Moderate AQI category in Tucson. This is because of Moderate ozone levels over the weekend, and high pressure overhead during the next couple days. However, a low-pressure wave over the Northwest will extend southward into Arizona beginning Thursday and is expected to help disperse ozone. Therefore, ozone is forecast in the Good AQI category Thursday and Friday.
In regards to particulate matter, both PM10 (dust) and PM2.5 (smoke) are forecast in the Good AQI category each day this week.
Check back tomorrow for the latest!
- M. Graves
ADEQ Meteorologist
What Flag Should I Fly?
Monday: Yellow
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Tuesday: Yellow
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