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Tuesday Forecast:

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

Ozone

101 AQI
Max 8-hr Avg: 71 ppb

PM10

53 AQI
24-hr Avg: 60 µg/m3

PM2.5

55 AQI
24-hr Avg: 11.0 µg/m3

Wednesday Forecast:


Ozone

87 AQI
Max 8-hr Avg: 66 ppb

PM10

65 AQI
24-hr Avg: 83 µg/m3

PM2.5

53 AQI
24-hr Avg: 10.4 µg/m3

Thursday Forecast:


Ozone

77 AQI
Max 8-hr Avg: 63 ppb

PM10

73 AQI
24-hr Avg: 100 µg/m3

PM2.5

55 AQI
24-hr Avg: 11.2 µg/m3

Friday Forecast:


Ozone

49 AQI
Max 8-hr Avg: 53 ppb

PM10

33 AQI
24-hr Avg: 36 µg/m3

PM2.5

33 AQI
24-hr Avg: 6.0 µg/m3

Saturday Forecast:


Ozone

64 AQI
Max 8-hr Avg: 59 ppb

PM10

38 AQI
24-hr Avg: 41 µg/m3

PM2.5

40 AQI
24-hr Avg: 7.2 µg/m3

Air Quality By Pollutant:

Pollutant
Tuesday
7/14/2026
Wednesday
7/15/2026
Thursday
7/16/2026
Friday
7/17/2026
Saturday
7/18/2026
O3
101
87
77
49
64
PM10
53
65
73
33
38
PM2.5
55
53
55
33
40
Pollutant
TUE
WED
THU
FRI
SAT
O3
101
87
77
49
64
PM10
53
65
73
33
38
PM2.5
55
53
55
33
40
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns


Forecast Discussion:

Yesterday, Peak 8 hour Ozone values reached the Unhealthy for Sensitive Groups category. It is anticipated that we will just reach that threshold once again today. Thus, an Ozone High Pollution Advisory is in effect for today. A decline in Ozone levels is anticipated thereafter - especially Friday with more cloudiness - before an uptrend over the weekend with less cloudiness.

Thunderstorm activity yesterday once again produced blowing dust. Thunderstorm winds are expected to continue affecting the Greater Phoenix Area to varying degrees through Sunday. At this time, potential for blowing dust looks to be best today through Thursday. A decrease in the potential for blowing dust is anticipated Friday due to more stable soils anticipated from the previous night's rainfall and storms that day less likely to produce strong winds. In fact, 24 hour average values for PM10 are expected to improve from Moderate to Good Friday and Saturday. Likewise for PM2.5. A downtrend in storm coverage is anticipated over the weekend - but strong outflow winds from distant storms cannot be ruled out.



- A. Jamison
ADEQ Meteorologist


What Flag Should I Fly?

Tuesday: Orange
Wednesday: Yellow
Air Quality chart showing the air quality to be Yellow for Moderate for this specific time or day. Moderate air quality may be a health concern for those who are unusually sensitive to air pollution.

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