Phoenix Forecast

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Air Quality Hourly Forecast | Phoenix

Click on each day to view forecast.

Friday Forecast:

Alert: Ozone High Pollution Advisory in effect for Friday. Health Impacts >

Ozone

101 AQI
Max 8-hr Avg: 71 ppb

PM10

47 AQI
24-hr Avg: 51 µg/m3

PM2.5

31 AQI
24-hr Avg: 7.5 µg/m3

Saturday Forecast:


Ozone

87 AQI
Max 8-hr Avg: 66 ppb

PM10

31 AQI
24-hr Avg: 33 µg/m3

PM2.5

30 AQI
24-hr Avg: 7.2 µg/m3

Sunday Forecast:


Ozone

80 AQI
Max 8-hr Avg: 64 ppb

PM10

30 AQI
24-hr Avg: 32 µg/m3

PM2.5

28 AQI
24-hr Avg: 6.6 µg/m3

Monday Forecast:


Ozone

93 AQI
Max 8-hr Avg: 68 ppb

PM10

36 AQI
24-hr Avg: 39 µg/m3

PM2.5

30 AQI
24-hr Avg: 7.2 µg/m3

Tuesday Forecast:


Ozone

80 AQI
Max 8-hr Avg: 64 ppb

PM10

37 AQI
24-hr Avg: 40 µg/m3

PM2.5

25 AQI
24-hr Avg: 6.1 µg/m3

Air Quality By Pollutant:

Pollutant
Friday
8/12/2022
Saturday
8/13/2022
Sunday
8/14/2022
Monday
8/15/2022
Tuesday
8/16/2022
O3
101
87
80
93
80
PM10
47
31
30
36
37
PM2.5
31
30
28
30
25
Pollutant
FRI
SAT
SUN
MON
TUE
O3
101
87
80
93
80
PM10
47
31
30
36
37
PM2.5
31
30
28
30
25
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Notice:
The Maricopa County Air Quality Department has issued a No Burn Day for today, 8/12/2022. Full Details >

Forecast Discussion:

Monsoon is a favorite time of year for many meteorologists but also one of the most challenging forecasting periods, given the subtle features that can make or break a forecast. So let's see what features we are dealing with today. High pressure is centered over the northeast portion of Colorado, with an area of low pressure just off the coast of Washington. On a smaller scale, there is a weak disturbance moving through the southwest corner of the state, another right along the Arizona/Mexico border near Douglas, and finally, a very weak circulation moving through the eastern portion of the state.

With plenty of moisture in place and these subtle features moving through the region, expect isolated to scattered thunderstorms across the area today, with those chances continuing through the weekend into the first part of next week. Storms that form will be capable of producing heavy rain and strong gusty winds. Also, with gusty outflow winds possible in the Valley, we may see a brief increase in PM-10 (dust) during the afternoon; however, any dust is forecast to be short duration.

Ozone has been the primary pollutant of concern, with five monitors in the Valley exceeding the health standard on Thursday. For today, while outflows and storms may move through the area, still expect them to be too late to disrupt the ozone plume in time to avoid exceeding the standard. As a result, an Ozone High Pollution Advisory is in effect today in Phoenix. With increased morning debris cloud cover, storm chances, and possible outflows this weekend into the first part of next week, forecasting ozone values to lower below the health standard, so the High Pollution Advisory will not continue through the weekend.

Have a great weekend!

- M. Pace
ADEQ Meteorologist


What Flag Should I Fly?

Friday: Orange
Saturday: Yellow

What is the Flag Program and how can my school/organization join? | Learn More >

Ozone & Your Health

People most vulnerable to the impacts of air pollution include children, older adults, adults exercising outdoors, people with heart or lung disease, and those suffering from asthma and bronchitis. Exposure to ozone can increase the number and severity of asthma attacks, cause or aggravate bronchitis or other lung disease, and reduce the body's ability to fight infection. Symptoms may include itchy eyes, nose and throat, wheezing, coughing, shortness of breath, chest pain and upper respiratory issues | View ADEQ Ozone Fact Sheet >

Please help reduce ozone by doing one or more of the following:
  • Drive as little as possible, carpool, use public transit or telecommute
  • Re-fuel your vehicle in the evening
  • Avoid waiting in long drive-thru lines, if possible
  • Use low-VOC (Volatile Organic Compounds) or water-based paints, stains, finishes and paint strippers - delay big painting projects
  • Make sure containers of household cleaners, garage and yard chemicals, and other solvents are sealed properly to prevent vapors from evaporating into the air