Tucson Forecast

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Air Quality Hourly Forecast | Tucson

Click on each day to view forecast.

Wednesday Forecast:


Ozone

47 AQI
Max 8-hr Avg: 51 ppb

PM10

21 AQI
24-hr Avg: 23 µg/m3

Thursday Forecast:


Ozone

46 AQI
Max 8-hr Avg: 50 ppb

PM10

24 AQI
24-hr Avg: 26 µg/m3

Friday Forecast:


Ozone

47 AQI
Max 8-hr Avg: 51 ppb

PM10

23 AQI
24-hr Avg: 25 µg/m3

Saturday Forecast:


Ozone

46 AQI
Max 8-hr Avg: 50 ppb

PM10

22 AQI
24-hr Avg: 24 µg/m3

Sunday Forecast:


Ozone

48 AQI
Max 8-hr Avg: 52 ppb

PM10

23 AQI
24-hr Avg: 25 µg/m3

Air Quality By Pollutant:

Pollutant
Wednesday
7/15/2020
Thursday
7/16/2020
Friday
7/17/2020
Saturday
7/18/2020
Sunday
7/19/2020
O3
47
46
47
46
48
PM10
21
24
23
22
23
Pollutant
WED
THU
FRI
SAT
SUN
O3
47
46
47
46
48
PM10
21
24
23
22
23
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

This morning, a weak wave of low pressure is sitting just off the coast of southern California, while the monsoon high pressure is still camped over Texas. This places Arizona underneath a southerly atmospheric flow. Thus, with moisture still available over southern Arizona, thunderstorm chances will continue this afternoon in/around the Tucson area. Clouds, gusty winds, and/or rain associated with storms are expected to arrive soon enough to help interfere with the daily ozone cycle and limit ozone levels. Ozone is forecast in the Good Air Quality Index (AQI) category again.

Looking ahead, not much is expected to change in the way of the weather pattern this week; the monsoon high pressure will remain centered to the east of Arizona. As a result, thunderstorm chances are expected each afternoon for the Tucson area. Despite the uncertainty in the day-to-day variability in thunderstorm activity, ozone is forecast in the Good AQI category each day for now.

In regards to PM10 (dust), we can't rule out the possibility of brief blowing dust ahead of gusty thunderstorm winds. But PM10 is forecast in the Good AQI category as well.

- M. Graves
ADEQ Meteorologist


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