Phoenix Forecast

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Air Quality Hourly Forecast | Phoenix

Click on each day to view forecast.

Friday Forecast:


Ozone

77 AQI
Max 8-hr Avg: 63 ppb

PM10

57 AQI
24-hr Avg: 67 µg/m3

PM2.5

67 AQI
24-hr Avg: 19.8 µg/m3

Saturday Forecast:


Ozone

71 AQI
Max 8-hr Avg: 61 ppb

PM10

46 AQI
24-hr Avg: 50 µg/m3

PM2.5

46 AQI
24-hr Avg: 11.1 µg/m3

Sunday Forecast:


Ozone

77 AQI
Max 8-hr Avg: 63 ppb

PM10

43 AQI
24-hr Avg: 46 µg/m3

PM2.5

43 AQI
24-hr Avg: 10.2 µg/m3

Monday Forecast:


Ozone

64 AQI
Max 8-hr Avg: 59 ppb

PM10

53 AQI
24-hr Avg: 60 µg/m3

PM2.5

33 AQI
24-hr Avg: 7.9 µg/m3

Tuesday Forecast:


Ozone

61 AQI
Max 8-hr Avg: 58 ppb

PM10

54 AQI
24-hr Avg: 62 µg/m3

PM2.5

30 AQI
24-hr Avg: 7.3 µg/m3

Air Quality By Pollutant:

Pollutant
Friday
4/9/2021
Saturday
4/10/2021
Sunday
4/11/2021
Monday
4/12/2021
Tuesday
4/13/2021
O3
77
71
77
64
61
PM10
57
46
43
53
54
PM2.5
67
46
43
33
30
Pollutant
FRI
SAT
SUN
MON
TUE
O3
77
71
77
64
61
PM10
57
46
43
53
54
PM2.5
67
46
43
33
30
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

Ozone is forecast to continue in the mid Moderate range for the next few days. Light breeziness should be enough to prevent ozone levels from ramping up too much, but not enough to totally clear out the airshed either. A trough will begin to move into the region on Monday and Tuesday, which should improve ventilation and lower ozone into the lower Moderates. As for PM10, there are some unusually elevated concentrations this morning, but we expect that to improve over the next couple hours. We forecast PM10 to drop into the Good AQI range on Saturday and Sunday due to less dust generating work activities. Then, as we return to the work week, we forecast PM10 to move back up into the Moderates on Monday and Tuesday. The elevated particulates mentioned above are also affecting PM2.5. This will likely result in PM2.5 also reaching into the Moderates today. It should be noted though, these unusually elevated particulates this morning are isolated near the South Phoenix monitor. After today, we forecast PM2.5 to stay in the Good AQI range through the remainder of the forecast period.

- R. Nicoll
ADEQ Meteorologist


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