Tucson Forecast

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Air Quality Hourly Forecast | Tucson

Click on each day to view forecast.

Wednesday Forecast:


Ozone

71 AQI
Max 8-hr Avg: 61 ppb

PM10

19 AQI
24-hr Avg: 20 µg/m3

Thursday Forecast:


Ozone

80 AQI
Max 8-hr Avg: 64 ppb

PM10

20 AQI
24-hr Avg: 22 µg/m3

Friday Forecast:


Ozone

74 AQI
Max 8-hr Avg: 62 ppb

PM10

20 AQI
24-hr Avg: 22 µg/m3

Saturday Forecast:


Ozone

71 AQI
Max 8-hr Avg: 61 ppb

PM10

19 AQI
24-hr Avg: 20 µg/m3

Sunday Forecast:


Ozone

67 AQI
Max 8-hr Avg: 60 ppb

PM10

19 AQI
24-hr Avg: 20 µg/m3

Air Quality By Pollutant:

Pollutant
Wednesday
4/24/2019
Thursday
4/25/2019
Friday
4/26/2019
Saturday
4/27/2019
Sunday
4/28/2019
O3
71
80
74
71
67
PM10
19
20
20
19
19
Pollutant
WED
THU
FRI
SAT
SUN
O3
71
80
74
71
67
PM10
19
20
20
19
19
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

The weather system bringing scattered showers, thunderstorms, and pockets of gustier winds to southeastern Arizona has trekked into northern Mexico per morning satellite observations. Our storm chances have faded with its departure.

Abundant sunshine, warming temperatures, and a lighter wind regime starting today brings ozone to the forefront. Highest daily ozone AQI is anticipated for Thursday by a combination of long-range transport from Phoenix mixing with local ozone production. Friday through Sunday, diurnal mountain-valley winds versus long-range transport are at play bringing peak ozone down a bit. Finally by early next week a widespread wind event impacts the region to flush the airshed.


- J. Malloy
ADEQ Meteorologist


What Flag Should I Fly?

Wednesday: Yellow
Thursday: Yellow

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