Phoenix Forecast

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Air Quality Hourly Forecast | Phoenix

Click on each day to view forecast.

Friday Forecast:


Ozone

47 AQI
Max 8-hr Avg: 51 ppb

PM10

81 AQI
24-hr Avg: 115 µg/m3

PM2.5

60 AQI
24-hr Avg: 16.4 µg/m3

Saturday Forecast:


Ozone

48 AQI
Max 8-hr Avg: 52 ppb

PM10

72 AQI
24-hr Avg: 97 µg/m3

PM2.5

55 AQI
24-hr Avg: 14.0 µg/m3

Sunday Forecast:


Ozone

46 AQI
Max 8-hr Avg: 50 ppb

PM10

67 AQI
24-hr Avg: 87 µg/m3

PM2.5

54 AQI
24-hr Avg: 13.5 µg/m3

Monday Forecast:


Ozone

47 AQI
Max 8-hr Avg: 51 ppb

PM10

82 AQI
24-hr Avg: 117 µg/m3

PM2.5

57 AQI
24-hr Avg: 14.8 µg/m3

Tuesday Forecast:


Ozone

44 AQI
Max 8-hr Avg: 47 ppb

PM10

71 AQI
24-hr Avg: 95 µg/m3

PM2.5

48 AQI
24-hr Avg: 11.5 µg/m3

Air Quality By Pollutant:

Pollutant
Friday
11/15/2019
Saturday
11/16/2019
Sunday
11/17/2019
Monday
11/18/2019
Tuesday
11/19/2019
O3
47
48
46
47
44
PM10
81
72
67
82
71
PM2.5
60
55
54
57
48
Pollutant
FRI
SAT
SUN
MON
TUE
O3
47
48
46
47
44
PM10
81
72
67
82
71
PM2.5
60
55
54
57
48
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

The end of the workweek is upon us and the weekend is knocking. You can definitely see the horizon showing a bit of pollution buildup. That’s what one would expect for a busy metropolitan under light winds in the cool, autumn season. This stretch of stagnation looks to continue to start next week.

Clearing winds are off the table for the weekend. We were watching for a potential weather disturbance diving into the Great Basin to increase the wind speeds over in our area by Sunday, but the trajectory of that weather system is going too far north and east of Arizona to have a meaningful impact to air quality. In lieu of weaker winds, the traditional shutdown of some industry for the weekend should help.

What is more promising, though, is the coming rain. At least that is the hope. Finally, there are signs that dynamics and moisture align over the state for a surge in rain chances in the late Tuesday to Thursday timeframe. Something to look forward to given the prolonged lack of rain in the deserts. Should widespread rain verify, not only will short-term air quality improve the stabilized desert soils would help lower dust emissions for future stagnation or high wind events.

More details to come on the impending rain threat with Monday morning’s forecast update. Enjoy the weekend!


- J. Malloy
ADEQ Meteorologist


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