Updated On: 9/10/2026 - 8:42 AM
Click on each day to view forecast.
Thursday Forecast:
Ozone
67 AQI
Max 8-hr Avg: 60 ppb
Max 8-hr Avg: 60 ppb
PM10
61 AQI
24-hr Avg: 75 µg/m3
24-hr Avg: 75 µg/m3
PM2.5
39 AQI
24-hr Avg: 7.0 µg/m3
24-hr Avg: 7.0 µg/m3
Friday Forecast:
Ozone
64 AQI
Max 8-hr Avg: 59 ppb
Max 8-hr Avg: 59 ppb
PM10
59 AQI
24-hr Avg: 72 µg/m3
24-hr Avg: 72 µg/m3
PM2.5
42 AQI
24-hr Avg: 7.6 µg/m3
24-hr Avg: 7.6 µg/m3
Saturday Forecast:
Ozone
49 AQI
Max 8-hr Avg: 53 ppb
Max 8-hr Avg: 53 ppb
PM10
41 AQI
24-hr Avg: 44 µg/m3
24-hr Avg: 44 µg/m3
PM2.5
39 AQI
24-hr Avg: 7.0 µg/m3
24-hr Avg: 7.0 µg/m3
Sunday Forecast:
Ozone
44 AQI
Max 8-hr Avg: 48 ppb
Max 8-hr Avg: 48 ppb
PM10
39 AQI
24-hr Avg: 42 µg/m3
24-hr Avg: 42 µg/m3
PM2.5
38 AQI
24-hr Avg: 6.8 µg/m3
24-hr Avg: 6.8 µg/m3
Monday Forecast:
Ozone
42 AQI
Max 8-hr Avg: 45 ppb
Max 8-hr Avg: 45 ppb
PM10
53 AQI
24-hr Avg: 59 µg/m3
24-hr Avg: 59 µg/m3
PM2.5
40 AQI
24-hr Avg: 7.2 µg/m3
24-hr Avg: 7.2 µg/m3
Air Quality By Pollutant:
Pollutant
Thursday
9/10/2026
9/10/2026
Friday
9/11/2026
9/11/2026
Saturday
9/12/2026
9/12/2026
Sunday
9/13/2026
9/13/2026
Monday
9/14/2026
9/14/2026
O3
67
64
49
44
42
PM10
61
59
41
39
53
PM2.5
39
42
39
38
40
Pollutant
THU
FRI
SAT
SUN
MON
O3
67
64
49
44
42
PM10
61
59
41
39
53
PM2.5
39
42
39
38
40
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns
Forecast Discussion:
Yesterday, ozone was able to reach the low end of the Moderate AQI category at a few monitors. Breezes helped to limit how ozone was able to reach. However, dust did occur early this morning, which is why PM10 (dust) has been running a bit elevated this morning at several monitoring sites.
Looking ahead, ozone is forecast in the Moderate AQI category today and Friday, given typical weekday local activities and similar conditions as yesterday. Then by the weekend, ozone is forecast to decrease because of a low-pressure pattern influencing the region's weather.
In regards to PM10 (dust), PM10 will be locally driven in the mornings when conditions are more stagnant. But, we also can't rule out the possibility of wind-driven dust in the evenings/nights. Hourly forecast graphs for the next couple of days reflect this. In general, highest PM10 levels are expected in industrial areas south/southwest of the Phoenix metro area.
Lastly, PM2.5 (smoke) will generally follow PM10 trends.
Check back tomorrow for the latest.
- M. Graves
ADEQ Meteorologist
Looking ahead, ozone is forecast in the Moderate AQI category today and Friday, given typical weekday local activities and similar conditions as yesterday. Then by the weekend, ozone is forecast to decrease because of a low-pressure pattern influencing the region's weather.
In regards to PM10 (dust), PM10 will be locally driven in the mornings when conditions are more stagnant. But, we also can't rule out the possibility of wind-driven dust in the evenings/nights. Hourly forecast graphs for the next couple of days reflect this. In general, highest PM10 levels are expected in industrial areas south/southwest of the Phoenix metro area.
Lastly, PM2.5 (smoke) will generally follow PM10 trends.
Check back tomorrow for the latest.
- M. Graves
ADEQ Meteorologist
What Flag Should I Fly?
Friday: Yellow
|
Saturday: Green
|
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