Tucson Forecast

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Air Quality Hourly Forecast | Tucson

Click on each day to view forecast.

Wednesday Forecast:


Ozone

58 AQI
Max 8-hr Avg: 57 ppb

PM10

36 AQI
24-hr Avg: 39 µg/m3

Thursday Forecast:


Ozone

64 AQI
Max 8-hr Avg: 59 ppb

PM10

37 AQI
24-hr Avg: 40 µg/m3

Friday Forecast:


Ozone

58 AQI
Max 8-hr Avg: 57 ppb

PM10

36 AQI
24-hr Avg: 39 µg/m3

Saturday Forecast:


Ozone

54 AQI
Max 8-hr Avg: 56 ppb

PM10

34 AQI
24-hr Avg: 37 µg/m3

Sunday Forecast:


Ozone

58 AQI
Max 8-hr Avg: 57 ppb

PM10

33 AQI
24-hr Avg: 36 µg/m3

Air Quality By Pollutant:

Pollutant
Wednesday
9/23/2020
Thursday
9/24/2020
Friday
9/25/2020
Saturday
9/26/2020
Sunday
9/27/2020
O3
58
64
58
54
58
PM10
36
37
36
34
33
Pollutant
WED
THU
FRI
SAT
SUN
O3
58
64
58
54
58
PM10
36
37
36
34
33
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

Yesterday, breezy northwesterly winds in the afternoon pushed highest ozone levels to the far eastern and southeastern parts of the Tucson area. Ozone was able to reach the low end of the Moderate Air Quality Index (AQI) category at three monitors. But ozone levels were lower than previous days.

Looking ahead, high pressure will slowly build over the Southwest today and Thursday and then generally stick around through Friday and the weekend. In other words, a very mild weather pattern will persist over the region during this period. High temperatures will increase into the low 100s by Thursday and skies will remain sunny each day. Continued afternoon breezes out of the northwest look possible most days as well.

Air quality-wise, considering previous days' trends, ozone may have the potential to reach the low end of the Moderate AQI category again each day through this period. But we'll continue to monitor these trends and make adjustments to the forecast as necessary. It should be noted that we have entered the time of year when average ozone levels are in the Good AQI category. But unfortunately, ozone levels have been higher than average over the past 10 days or so.

PM10 (dust) is forecast to remain in the Good AQI category.

- M. Graves
ADEQ Meteorologist


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Friday: Yellow

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