Phoenix Forecast

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Air Quality Hourly Forecast | Phoenix

Click on each day to view forecast.

Friday Forecast:


Ozone

41 AQI
Max 8-hr Avg: 44 ppb

PM10

66 AQI
24-hr Avg: 85 µg/m3

PM2.5

94 AQI
24-hr Avg: 32.6 µg/m3

Saturday Forecast:


Ozone

41 AQI
Max 8-hr Avg: 44 ppb

PM10

57 AQI
24-hr Avg: 68 µg/m3

PM2.5

86 AQI
24-hr Avg: 28.6 µg/m3

Sunday Forecast:


Ozone

42 AQI
Max 8-hr Avg: 45 ppb

PM10

53 AQI
24-hr Avg: 60 µg/m3

PM2.5

79 AQI
24-hr Avg: 25.3 µg/m3

Monday Forecast:


Ozone

43 AQI
Max 8-hr Avg: 46 ppb

PM10

61 AQI
24-hr Avg: 75 µg/m3

PM2.5

74 AQI
24-hr Avg: 23.0 µg/m3

Tuesday Forecast:


Ozone

37 AQI
Max 8-hr Avg: 40 ppb

PM10

54 AQI
24-hr Avg: 62 µg/m3

PM2.5

59 AQI
24-hr Avg: 16.1 µg/m3

Air Quality By Pollutant:

Pollutant
Friday
1/15/2021
Saturday
1/16/2021
Sunday
1/17/2021
Monday
1/18/2021
Tuesday
1/19/2021
O3
41
41
42
43
37
PM10
66
57
53
61
54
PM2.5
94
86
79
74
59
Pollutant
FRI
SAT
SUN
MON
TUE
O3
41
41
42
43
37
PM10
66
57
53
61
54
PM2.5
94
86
79
74
59
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

Calm, stable conditions over the area continue to allow particulate levels to increase during the morning and evening hours. This has resulted in PM10 in the mid Moderate AQI range, and PM2.5 in the upper Moderate AQI range. Looking ahead, today will likely have the highest particulate levels of the forecast period due to more fireplace usage as we head into the weekend. PM10 levels are forecast to remain elevated over the weekend, then drop down a bit on Monday with less fireplace activity. PM10 on the other hand, will likely increase a little on Monday with more dust-generating work activities.

The exciting part of the forecast isn't until the middle of next week. We are forecasting a low pressure system to move through the region next Tuesday and Wednesday. With this weather system there is potential to get some much needed rain! We still anticipate elevated particulate levels early Tuesday, but with rain moving in later on Tuesday, particulate levels should plummet. Also worth noting, we may see somewhat elevated PM10 levels before the rain due to some breezy winds with the weather system moving in. However, due to the rain, we expect PM10 and PM2.5 to fall into the low Moderates on Tuesday, then the Good range on Wednesday.

Have a great weekend!

- R. Nicoll
ADEQ Meteorologist


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