Tucson Forecast

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Air Quality Hourly Forecast | Tucson

Updated On: 2/20/2020 - 8:56 AM
Click on each day to view forecast.

Thursday Forecast:


Ozone

46 AQI
Max 8-hr Avg: 50 ppb

PM10

33 AQI
24-hr Avg: 36 µg/m3

Friday Forecast:


Ozone

39 AQI
Max 8-hr Avg: 42 ppb

PM10

38 AQI
24-hr Avg: 41 µg/m3

Saturday Forecast:


Ozone

34 AQI
Max 8-hr Avg: 37 ppb

PM10

8 AQI
24-hr Avg: 9 µg/m3

Sunday Forecast:


Ozone

42 AQI
Max 8-hr Avg: 45 ppb

PM10

13 AQI
24-hr Avg: 14 µg/m3

Monday Forecast:


Ozone

44 AQI
Max 8-hr Avg: 47 ppb

PM10

19 AQI
24-hr Avg: 21 µg/m3

Air Quality By Pollutant:

Pollutant
Thursday
2/20/2020
Friday
2/21/2020
Saturday
2/22/2020
Sunday
2/23/2020
Monday
2/24/2020
O3
46
39
34
42
44
PM10
33
38
8
13
19
Pollutant
THU
FRI
SAT
SUN
MON
O3
46
39
34
42
44
PM10
33
38
8
13
19
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

The Tucson area will have at least one more day of above normal temperatures and light winds as high pressure situates itself above Arizona today. Then beginning later this evening, winds will increase out of the east. Winds will be breezy, at least 10-15 mph, tonight and all morning Friday. In the afternoon on Friday, highs will cool to around normal for this time of year (which is 69°F).

Then on Saturday, a relatively strong wave of low pressure will pass over Arizona and bring with it stronger winds out of the southwest (15-20 mph), widespread rain, and a cold front. By Sunday, highs will drop into the low 60s and winds will become light again. Temperatures will start increasing again on Monday.

Air quality-wise, the main concern of this forecast is the possibility of elevated PM10 (dust) levels tonight and/or Friday morning as a result of the breezy easterly winds. However, once the rain starts--potentially Friday evening--PM10 levels will improve. The rain on Saturday will then help to keep PM10 levels low.

In all, both PM10 and ozone are expected to remain in the Good Air Quality Index (AQI) category each day through at least Monday.

- M. Graves
ADEQ Meteorologist

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Thursday: Green
Friday: Green

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