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Friday Forecast:

HPA
Alert: PM10 and PM2.5 High Pollution Advisories in effect for Friday |  Health Impacts >

Ozone

36 AQI
Max 8-hr Avg: 39 ppb

PM10

309 AQI
24-hr Avg: 432 µg/m3

PM2.5

151 AQI
24-hr Avg: 56.1 µg/m3

Saturday Forecast:


Ozone

30 AQI
Max 8-hr Avg: 32 ppb

PM10

91 AQI
24-hr Avg: 135 µg/m3

PM2.5

66 AQI
24-hr Avg: 17.2 µg/m3

Sunday Forecast:


Ozone

32 AQI
Max 8-hr Avg: 35 ppb

PM10

75 AQI
24-hr Avg: 103 µg/m3

PM2.5

58 AQI
24-hr Avg: 12.9 µg/m3

Monday Forecast:


Ozone

34 AQI
Max 8-hr Avg: 37 ppb

PM10

37 AQI
24-hr Avg: 40 µg/m3

PM2.5

33 AQI
24-hr Avg: 6.0 µg/m3

Tuesday Forecast:


Ozone

35 AQI
Max 8-hr Avg: 38 ppb

PM10

36 AQI
24-hr Avg: 39 µg/m3

PM2.5

32 AQI
24-hr Avg: 5.7 µg/m3

Air Quality By Pollutant:

Pollutant
Friday
7/10/2026
Saturday
7/11/2026
Sunday
7/12/2026
Monday
7/13/2026
Tuesday
7/14/2026
O3
36
30
32
34
35
PM10
309
91
75
37
36
PM2.5
151
66
58
33
32
Pollutant
FRI
SAT
SUN
MON
TUE
O3
36
30
32
34
35
PM10
309
91
75
37
36
PM2.5
151
66
58
33
32
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns


Forecast Discussion:

All pollutants ended up in the Good AQI range yesterday. However, a significant amount of dust moved into the area from the east/southeast this morning associated with thunderstorm outflows over southeastern Arizona and northern Mexico. The highest concentrations swept through the area in the early morning hours, but there is still some lingering dust. Due to the elevated dust this morning, the PM10 AQI has the potential to reach the Hazardous category for the day. Fortunately, the worst of it is already over. However, we are still issuing a PM10 High Pollution Advisory for today.

Looking ahead, there will continue to be chances for early morning dust like today for the next couple days. We are not forecasting as high of concentrations, as we don't think there will be as much available dust, and rain will hopefully stabilize soils over some of the dust source regions. Overall, we are forecasting upper Moderate PM10 levels on Saturday, then mid Moderates on Sunday, then back to the Good range starting Monday.

Switching to ozone, it is forecast to hover around the mid Good AQI range through the forecast period. As for PM2.5, it will follow a similar trend to PM10, but lower.

- R. Nicoll
ADEQ Meteorologist


What Flag Should I Fly?

Saturday: 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.
Sunday: 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.

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)