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Friday Forecast:

HPA
Alert: Ozone and PM10 High Pollution Advisories in effect for Friday |  Health Impacts >
Notice
Notice: Lingering dust this morning; blowing dust possible in the evening.

Ozone

101 AQI
Max 8-hr Avg: 71 ppb

PM10

111 AQI
24-hr Avg: 175 µg/m3

PM2.5

61 AQI
24-hr Avg: 14.4 µg/m3

Saturday Forecast:

HPA
Alert: PM10 High Pollution Advisory in effect for Saturday |  Health Impacts >
Notice
Notice: Blowing dust possible in the evening.

Ozone

80 AQI
Max 8-hr Avg: 64 ppb

PM10

124 AQI
24-hr Avg: 202 µg/m3

PM2.5

66 AQI
24-hr Avg: 17.4 µg/m3

Sunday Forecast:


Ozone

50 AQI
Max 8-hr Avg: 54 ppb

PM10

54 AQI
24-hr Avg: 61 µg/m3

PM2.5

34 AQI
24-hr Avg: 6.2 µg/m3

Monday Forecast:


Ozone

61 AQI
Max 8-hr Avg: 58 ppb

PM10

33 AQI
24-hr Avg: 36 µg/m3

PM2.5

34 AQI
24-hr Avg: 6.2 µg/m3

Tuesday Forecast:


Ozone

67 AQI
Max 8-hr Avg: 60 ppb

PM10

34 AQI
24-hr Avg: 37 µg/m3

PM2.5

36 AQI
24-hr Avg: 6.4 µg/m3

Air Quality By Pollutant:

Pollutant
Friday
8/28/2026
Saturday
8/29/2026
Sunday
8/30/2026
Monday
8/31/2026
Tuesday
9/1/2026
O3
101
80
50
61
67
PM10
111
124
54
33
34
PM2.5
61
66
34
34
36
Pollutant
FRI
SAT
SUN
MON
TUE
O3
101
80
50
61
67
PM10
111
124
54
33
34
PM2.5
61
66
34
34
36
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns


Forecast Discussion:

Winds from distant thunderstorms last night brought in some lofted dust which is lingering this morning. As breezes pick up later today, expect improvement. There will be another opportunity for blowing dust tonight. The combination of this morning's dust and another influx tonight is expected to lead to a 24 hour average of PM10 (dust) reaching the Unhealthy for Sensitive Groups category. A similar pattern is anticipated Saturday (possibly more dense blowing dust). Thus a High Pollution Advisory for PM10 for today and Saturday. Shower and thunderstorm chances continue for the Phoenix area Sunday and Monday before tapering off Tuesday. Blowing dust will be less likely on Sunday and Monday. 24 hour average PM10 values are forecast to improve significantly beginning Sunday and continue Monday and Tuesday. 24 hour average PM2.5 will follow a similar pattern but will not be nearly as close to the Advisory threshold today and Saturday before improving.

Another day of high ozone values is anticipated today and thus the High Pollution Advisory remains in place. Conditions are expected to improve over the weekend with more cloudiness and the typical decrease in commercial and transportation activities that contribute to ozone formation. Ozone starts ticking up earl;y in the next workweek. But remaining in the low Moderate range.

- A. Jamison
ADEQ Meteorologist


What Flag Should I Fly?

Friday: Orange
Saturday: 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

Particulate Matter and Your Health - PM10 (Dust) and PM2.5 (Smoke)

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 particulate matter 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. The size of particles is directly linked to their potential for causing health problems. Small particles of concern include "fine particles" (such as those found in smoke and haze), which are 2.5 microns or less in size; and "coarse particles" (such as those found in wind-blown dust), which have diameters between 2.5 and 10 microns. These small particles, some much smaller in diameter than a human hair, pose the greatest problems because they can get deep into your lungs, and some may even get into your bloodstream | View ADEQ Particulate Matter Fact Sheet >

  • Use gas or electric instead of burning wood
  • Limit the lighting of fireworks
  • Ride transit, carpool or telework
  • Eliminate all unnecessary driving and/or combine trips
  • Avoid dirt roads
  • Avoid the use of leaf blowers
  • If burning wood for heat or food preparation, use dry wood (burning wet wood releases more particulate matter)

Particulate Matter and Your Health - PM10 (Dust) and PM2.5 (Smoke)

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 particulate matter 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. The size of particles is directly linked to their potential for causing health problems. Small particles of concern include "fine particles" (such as those found in smoke and haze), which are 2.5 microns or less in size; and "coarse particles" (such as those found in wind-blown dust), which have diameters between 2.5 and 10 microns. These small particles, some much smaller in diameter than a human hair, pose the greatest problems because they can get deep into your lungs, and some may even get into your bloodstream | View ADEQ Particulate Matter Fact Sheet >

  • Use gas or electric instead of burning wood
  • Limit the lighting of fireworks
  • Ride transit, carpool or telework
  • Eliminate all unnecessary driving and/or combine trips
  • Avoid dirt roads
  • Avoid the use of leaf blowers
  • If burning wood for heat or food preparation, use dry wood (burning wet wood releases more particulate matter)