Phoenix Forecast

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Air Quality Hourly Forecast | Phoenix

Click on each day to view forecast.

Friday Forecast:


Ozone

42 AQI
Max 8-hr Avg: 45 ppb

PM10

56 AQI
24-hr Avg: 66 µg/m3

PM2.5

46 AQI
24-hr Avg: 11.1 µg/m3

Saturday Forecast:


Ozone

43 AQI
Max 8-hr Avg: 46 ppb

PM10

57 AQI
24-hr Avg: 68 µg/m3

PM2.5

53 AQI
24-hr Avg: 13.1 µg/m3

Sunday Forecast:


Ozone

44 AQI
Max 8-hr Avg: 47 ppb

PM10

51 AQI
24-hr Avg: 55 µg/m3

PM2.5

60 AQI
24-hr Avg: 16.2 µg/m3

Monday Forecast:


Ozone

43 AQI
Max 8-hr Avg: 46 ppb

PM10

63 AQI
24-hr Avg: 80 µg/m3

PM2.5

54 AQI
24-hr Avg: 13.4 µg/m3

Tuesday Forecast:


Ozone

43 AQI
Max 8-hr Avg: 46 ppb

PM10

68 AQI
24-hr Avg: 90 µg/m3

PM2.5

55 AQI
24-hr Avg: 13.9 µg/m3

Air Quality By Pollutant:

Pollutant
Friday
11/26/2021
Saturday
11/27/2021
Sunday
11/28/2021
Monday
11/29/2021
Tuesday
11/30/2021
O3
42
43
44
43
43
PM10
56
57
51
63
68
PM2.5
46
53
60
54
55
Pollutant
FRI
SAT
SUN
MON
TUE
O3
42
43
44
43
43
PM10
56
57
51
63
68
PM2.5
46
53
60
54
55
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

Yesterday, breezy winds were seen throughout the state in the afternoon hours. Phoenix Sky Harbor registered four continuous hours of wind gusts above 20 mph, along with sustained speeds around 15 mph throughout the day. Although the stronger wind conditions were forecasted, these ended up providing better ventilation which lead to lower PM10 and PM2.5 values than originally intended. PM2.5 (smoke) levels landed in the Good AQI range and PM10 (dust) was on the lower Moderate AQI level for Thanksgiving day.

Looking ahead conditions will remain calm for the rest of this forecast period. Temperatures will sit in the upper 70s for the maximum, and lows will linger around 50 degrees. Winds will range from 5-10 mph out of the north today but as we progress through the forecast period, light north winds will be the main story. These conditions are thanks to a cut-off low lying to the southwest of the state and a ridge located over the Great Basin. These opposing systems help create slightly warmer temperatures, occasional cloud cover, and light winds. We may see another disturbance move through next week, but we'll have more on that in upcoming discussions.

In regards to air quality, the great ventilation we saw yesterday is still impacting particulates this morning. PM10 and PM2.5 are running lower than what was forecasted on Wednesday for today. As a result, we are forecasting Good AQI for PM2.5 today, but we will likely see an upward trend as stagnation begins to take over our weather story. PM10 is forecast to remain in the Moderate AQI range this forecast period. We have no concerns will ozone at this time.

Have a great day!

- P. Swenson
ADEQ Meteorologist


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