Phoenix Forecast

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Air Quality Hourly Forecast | Phoenix

Click on each day to view forecast.

Thursday Forecast:


Ozone

93 AQI
Max 8-hr Avg: 68 ppb

PM10

62 AQI
24-hr Avg: 78 µg/m3

PM2.5

51 AQI
24-hr Avg: 12.1 µg/m3

Friday Forecast:


Ozone

74 AQI
Max 8-hr Avg: 62 ppb

PM10

52 AQI
24-hr Avg: 58 µg/m3

PM2.5

50 AQI
24-hr Avg: 11.9 µg/m3

Saturday Forecast:


Ozone

67 AQI
Max 8-hr Avg: 60 ppb

PM10

46 AQI
24-hr Avg: 50 µg/m3

PM2.5

45 AQI
24-hr Avg: 10.8 µg/m3

Sunday Forecast:


Ozone

74 AQI
Max 8-hr Avg: 62 ppb

PM10

45 AQI
24-hr Avg: 49 µg/m3

PM2.5

45 AQI
24-hr Avg: 10.9 µg/m3

Monday Forecast:


Ozone

90 AQI
Max 8-hr Avg: 67 ppb

PM10

53 AQI
24-hr Avg: 59 µg/m3

PM2.5

52 AQI
24-hr Avg: 12.5 µg/m3

Air Quality By Pollutant:

Pollutant
Thursday
9/24/2020
Friday
9/25/2020
Saturday
9/26/2020
Sunday
9/27/2020
Monday
9/28/2020
O3
93
74
67
74
90
PM10
62
52
46
45
53
PM2.5
51
50
45
45
52
Pollutant
THU
FRI
SAT
SUN
MON
O3
93
74
67
74
90
PM10
62
52
46
45
53
PM2.5
51
50
45
45
52
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

Pollution levels remained in the Moderate AQI range yesterday for ozone, PM10, and PM2.5. We aren't expecting a whole lot of change today. First, looking at ozone, calm winds and sunny skies will likely allow ozone to reach the upper Moderates today. We do forecast ozone to improve a little tomorrow through the weekend with better winds aloft. Then with a ridge strengthening over the region early next week, ozone will likely start trending back up. Overall though, ozone is forecast to remain in the Moderate AQI range through the forecast period.

Calm conditions have allowed particulate levels to be elevated, particularly during the morning and evening hours. We are forecasting PM10 to hang on to the Moderates through tomorrow, then drop into the Good range over the weekend with better ventilation and less dust-generating work activities. PM2.5 will follow a similar trend, but may drop into the Good range as early as tomorrow. Both PM10 and PM2.5 are forecast to return to the Moderate AQI range on Monday with calm, dry, and stable conditions.

- R. Nicoll
ADEQ Meteorologist


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Thursday: Yellow
Friday: Yellow

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