Phoenix Forecast

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Air Quality Hourly Forecast | Phoenix

Click on each day to view forecast.

Tuesday Forecast:


Ozone

48 AQI
Max 8-hr Avg: 52 ppb

PM10

61 AQI
24-hr Avg: 76 µg/m3

PM2.5

53 AQI
24-hr Avg: 12.9 µg/m3

Wednesday Forecast:


Ozone

47 AQI
Max 8-hr Avg: 51 ppb

PM10

70 AQI
24-hr Avg: 94 µg/m3

PM2.5

56 AQI
24-hr Avg: 14.5 µg/m3

Thursday Forecast:


Ozone

46 AQI
Max 8-hr Avg: 50 ppb

PM10

57 AQI
24-hr Avg: 67 µg/m3

PM2.5

49 AQI
24-hr Avg: 11.7 µg/m3

Friday Forecast:


Ozone

49 AQI
Max 8-hr Avg: 53 ppb

PM10

58 AQI
24-hr Avg: 69 µg/m3

PM2.5

53 AQI
24-hr Avg: 13.2 µg/m3

Saturday Forecast:


Ozone

48 AQI
Max 8-hr Avg: 52 ppb

PM10

50 AQI
24-hr Avg: 54 µg/m3

PM2.5

47 AQI
24-hr Avg: 11.2 µg/m3

Air Quality By Pollutant:

Pollutant
Tuesday
3/2/2021
Wednesday
3/3/2021
Thursday
3/4/2021
Friday
3/5/2021
Saturday
3/6/2021
O3
48
47
46
49
48
PM10
61
70
57
58
50
PM2.5
53
56
49
53
47
Pollutant
TUE
WED
THU
FRI
SAT
O3
48
47
46
49
48
PM10
61
70
57
58
50
PM2.5
53
56
49
53
47
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

High-pressure is currently sitting over our region. We should hit right around 80 degrees for your high temperature today, and breezy easterly winds are expected throughout the valley as well. This ridge is going to keep making its way toward the Plains while a low-pressure system follows closely behind. This system still has a chance to bring very light showers into the area on Wednesday but better chances for our friends in the northern half of the state. The main focus of this disturbance is going to be the accompanying strong southerly winds.

Due to the strong winds (20-30mph) associated with the storm system and current dry conditions, the National Weather Service has issued a Fire Weather Watch that is in effect from Wednesday morning to Wednesday afternoon (11 am - 6 pm).

Once this low-pressure moves out of our region, we see a nearly 10-degree temperature drop Wednesday into Thursday, but with another strong ridge coming through, we'll be back in the 80s for Friday and Saturday. Calm conditions will be expected for the tail-end of your workweek going into your weekend.

As for air quality, breezy east winds this afternoon will likely contribute to elevated levels of PM10 (dust). Also, with the strong southerly winds tomorrow, another duration of elevated dust levels could be seen in the afternoon/evening hours. PM10 is forecast to remain in the Moderate Air Quality Index through Friday. Over the weekend, we should hopefully see a drop in both PM10 and PM2.5 (smoke) to the Good AQI range. PM2.5 is also expected to be in the Good AQI category Thursday following the low-pressure system. Otherwise, this particulate will be in the Moderate AQI. Ozone should remain in the Good range all week.

Happy Tuesday!

- P. Swenson
ADEQ Meteorologist


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Wednesday: Yellow
Thursday: Yellow

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