Phoenix Forecast

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Air Quality Hourly Forecast | Phoenix

Click on each day to view forecast.

Friday Forecast:


Ozone

38 AQI
Max 8-hr Avg: 41 ppb

PM10

73 AQI
24-hr Avg: 99 µg/m3

PM2.5

77 AQI
24-hr Avg: 24.3 µg/m3

Saturday Forecast:


Ozone

37 AQI
Max 8-hr Avg: 40 ppb

PM10

59 AQI
24-hr Avg: 71 µg/m3

PM2.5

72 AQI
24-hr Avg: 21.9 µg/m3

Sunday Forecast:


Ozone

38 AQI
Max 8-hr Avg: 41 ppb

PM10

55 AQI
24-hr Avg: 63 µg/m3

PM2.5

73 AQI
24-hr Avg: 22.4 µg/m3

Monday Forecast:


Ozone

39 AQI
Max 8-hr Avg: 42 ppb

PM10

63 AQI
24-hr Avg: 80 µg/m3

PM2.5

72 AQI
24-hr Avg: 22.3 µg/m3

Tuesday Forecast:


Ozone

38 AQI
Max 8-hr Avg: 41 ppb

PM10

65 AQI
24-hr Avg: 83 µg/m3

PM2.5

71 AQI
24-hr Avg: 21.5 µg/m3

Air Quality By Pollutant:

Pollutant
Friday
12/2/2022
Saturday
12/3/2022
Sunday
12/4/2022
Monday
12/5/2022
Tuesday
12/6/2022
O3
38
37
38
39
38
PM10
73
59
55
63
65
PM2.5
77
72
73
72
71
Pollutant
FRI
SAT
SUN
MON
TUE
O3
38
37
38
39
38
PM10
73
59
55
63
65
PM2.5
77
72
73
72
71
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

It's a cloudy Friday morning in the Valley of the Sun as some subtropical moisture streams over the region. Looking at water vapor satellite this morning, the most prominent feature that will impact our weather is a large ridge of high pressure over the Gulf of Mexico, with an axis running east to west from the Bahamas to west of the tip of Baja. At the same time, a trough of low pressure is off the coast of the Pacific Northwest.

The trough off the coast of the Pacific Northwest will continue to slowly drop southward along the coast and stall out off the coast of Northern California late tonight into Sunday. As the trough stalls, the high over the Gulf of Mexico will shift slightly further west. This weather setup will result in a more robust southwest-to-northeast flow in Arizona, which will help to draw in some moisture, especially across the southern part of the state. Phoenix will be right on the northern fringes of this moisture stream, so while we will see clouds through the weekend, only expecting a slight chance of rain Saturday and Sunday.

As the high over the Gulf shifts back to the east on Monday, the trough along the coast will finally start to drop southeast and into Arizona Tuesday into Wednesday. This will again bring some slight rain chances to the area late Tuesday into Wednesday.

As for air quality, with light winds expected through the period, PM-10 and PM-2.5 are forecast to be in the Moderate AQI category through the forecast period, with the highest concentrations predicted to be in the late evening and early morning hours.

Have a great weekend!

- M. Pace
ADEQ Meteorologist


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