Updated On: 9/16/2026 - 8:00 AM
Click on each day to view forecast.
Wednesday Forecast:
Ozone
35 AQI
Max 8-hr Avg: 38 ppb
Max 8-hr Avg: 38 ppb
PM10
10 AQI
24-hr Avg: 11 µg/m3
24-hr Avg: 11 µg/m3
PM2.5
24 AQI
24-hr Avg: 4.4 µg/m3
24-hr Avg: 4.4 µg/m3
Thursday Forecast:
Ozone
40 AQI
Max 8-hr Avg: 43 ppb
Max 8-hr Avg: 43 ppb
PM10
11 AQI
24-hr Avg: 12 µg/m3
24-hr Avg: 12 µg/m3
PM2.5
26 AQI
24-hr Avg: 4.6 µg/m3
24-hr Avg: 4.6 µg/m3
Friday Forecast:
Ozone
48 AQI
Max 8-hr Avg: 52 ppb
Max 8-hr Avg: 52 ppb
PM10
16 AQI
24-hr Avg: 17 µg/m3
24-hr Avg: 17 µg/m3
PM2.5
31 AQI
24-hr Avg: 5.5 µg/m3
24-hr Avg: 5.5 µg/m3
Saturday Forecast:
Ozone
47 AQI
Max 8-hr Avg: 51 ppb
Max 8-hr Avg: 51 ppb
PM10
17 AQI
24-hr Avg: 18 µg/m3
24-hr Avg: 18 µg/m3
PM2.5
32 AQI
24-hr Avg: 5.8 µg/m3
24-hr Avg: 5.8 µg/m3
Sunday Forecast:
Ozone
48 AQI
Max 8-hr Avg: 52 ppb
Max 8-hr Avg: 52 ppb
PM10
19 AQI
24-hr Avg: 20 µg/m3
24-hr Avg: 20 µg/m3
PM2.5
34 AQI
24-hr Avg: 6.1 µg/m3
24-hr Avg: 6.1 µg/m3
Air Quality By Pollutant:
Pollutant
Wednesday
9/16/2026
9/16/2026
Thursday
9/17/2026
9/17/2026
Friday
9/18/2026
9/18/2026
Saturday
9/19/2026
9/19/2026
Sunday
9/20/2026
9/20/2026
O3
35
40
48
47
48
PM10
10
11
16
17
19
PM2.5
24
26
31
32
34
Pollutant
WED
THU
FRI
SAT
SUN
O3
35
40
48
47
48
PM10
10
11
16
17
19
PM2.5
24
26
31
32
34
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns
Forecast Discussion:
Today is shaping up to be a rainy day for much of Arizona, including the southeastern part of the state. The National Weather Service has a Flood Watch out for today, and there is also an common Moderate risk for excessive rainfall. This introduces obvious roadway safety concerns. As for the air quality though, the clouds and rain will keep air pollutants down.
After today, conditions will dry out and calm down. Cloud cover may also linger for a bit on Thursday before clearing out later.
Overall, PM10 (dust) and PM2.5 (smoke) will remain low for the rest of the period because of the rain. But ozone levels will likely trend upwards as light winds and sunnier skies return.
Check back tomorrow for more.
- M. Graves
ADEQ Meteorologist
After today, conditions will dry out and calm down. Cloud cover may also linger for a bit on Thursday before clearing out later.
Overall, PM10 (dust) and PM2.5 (smoke) will remain low for the rest of the period because of the rain. But ozone levels will likely trend upwards as light winds and sunnier skies return.
Check back tomorrow for more.
- M. Graves
ADEQ Meteorologist
What Flag Should I Fly?
Wednesday: Green
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Thursday: Green
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