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AQD | Phoenix Forecast

Click on each day to view forecast.

Friday Forecast:


Ozone

87 AQI
Max 8-hr Avg: 66 ppb

PM10

50 AQI
24-hr Avg: 54 µg/m3

PM2.5

33 AQI
24-hr Avg: 6.0 µg/m3

Saturday Forecast:


Ozone

74 AQI
Max 8-hr Avg: 62 ppb

PM10

42 AQI
24-hr Avg: 45 µg/m3

PM2.5

37 AQI
24-hr Avg: 6.7 µg/m3

Sunday Forecast:


Ozone

93 AQI
Max 8-hr Avg: 68 ppb

PM10

39 AQI
24-hr Avg: 42 µg/m3

PM2.5

39 AQI
24-hr Avg: 7.1 µg/m3

Monday Forecast:

Alert: Ozone High Pollution Watch in effect for Monday |  Health Impacts >

Ozone

112 AQI
Max 8-hr Avg: 74 ppb

PM10

52 AQI
24-hr Avg: 58 µg/m3

PM2.5

40 AQI
24-hr Avg: 7.2 µg/m3

Tuesday Forecast:

Alert: Ozone High Pollution Watch in effect for Tuesday |  Health Impacts >

Ozone

101 AQI
Max 8-hr Avg: 71 ppb

PM10

52 AQI
24-hr Avg: 57 µg/m3

PM2.5

41 AQI
24-hr Avg: 7.4 µg/m3

Air Quality By Pollutant:

Pollutant
Friday
5/24/2024
Saturday
5/25/2024
Sunday
5/26/2024
Monday
5/27/2024
Tuesday
5/28/2024
O3
87
74
93
112
101
PM10
50
42
39
52
52
PM2.5
33
37
39
40
41
Pollutant
FRI
SAT
SUN
MON
TUE
O3
87
74
93
112
101
PM10
50
42
39
52
52
PM2.5
33
37
39
40
41
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns


Forecast Discussion:

A weak disturbance located off the California coast will make its way eastward over the desert southwest today, resulting in southwest winds of 10-15 mph this afternoon (Friday). By tomorrow, winds will increase to 15-20 mph, with temperatures dropping to just below the 90°F mark in the valley.

Going forward, higher pressure will reestablish on Sunday, with winds expected to become mostly light, with similar trends persisting through the first half of the week. Temperatures will increase into the triple digits starting on Monday, so be sure to hydrate as the summer heat returns to the desert!

As for air quality, ozone is forecast to come in the Moderate AQI over the next three days, reaching the USG AQI category by Monday due to stagnant conditions and ample sunlight (ozone needs sunlight to form). An Ozone High Pollution Watch is in effect for Maricopa County on Monday and Tuesday. Levels will be elevated between the 11:00 a.m. and 6:00 p.m. hours. We will update our forecast on Sunday to decide if upgrading to an HPA is necessary for Monday/Tuesday.

Have a safe and great weekend!

- B. Droppleman
ADEQ Meteorologist


What Flag Should I Fly?

Sunday: Yellow
Monday: Orange

Ozone and 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 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

Report an Air Quality Complaint 
Ph: 602-771-2286 
or online >