Updated On: 10/19/2026 - 8:32 AM
Click on each day to view forecast.
Monday Forecast:
PM10
21 AQI
24-hr Avg: 23 µg/m3
24-hr Avg: 23 µg/m3
Tuesday Forecast:
PM10
27 AQI
24-hr Avg: 29 µg/m3
24-hr Avg: 29 µg/m3
Wednesday Forecast:
PM10
25 AQI
24-hr Avg: 27 µg/m3
24-hr Avg: 27 µg/m3
Thursday Forecast:
PM10
8 AQI
24-hr Avg: 9 µg/m3
24-hr Avg: 9 µg/m3
Friday Forecast:
PM10
13 AQI
24-hr Avg: 14 µg/m3
24-hr Avg: 14 µg/m3
Air Quality By Pollutant:
Pollutant
Monday
10/19/2026
10/19/2026
Tuesday
10/20/2026
10/20/2026
Wednesday
10/21/2026
10/21/2026
Thursday
10/22/2026
10/22/2026
Friday
10/23/2026
10/23/2026
PM10
21
27
25
8
13
Pollutant
MON
TUE
WED
THU
FRI
PM10
21
27
25
8
13
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns
Forecast Discussion:
Last Friday was windy and dusty, and the winds were significant to cause PM10 (dust) to exceed the federal health standard at the Rillito monitor. The Air Quality Index was also able to reach the Very Unhealthy (purple) category.
Fortunately however, PM10 levels remained relatively low over the weekend and have been low so far this morning.
Looking ahead, more active weather is coming down the pipe this week. More breezes and rain are in the forecast, with the window for rain chances looking to be later Wednesday into Thursday. Rainfall up to an an inch or more may be possible. And at least for now, winds aren't looking to be as potent as they were last week, which will mean a smaller potential for dust. Rain will quickly stamp out any remaining dust chances, too.
For now, PM10 is forecast in the Good AQI category each day.
Check back tomorrow for the latest.
- M. Graves
ADEQ Meteorologist
Fortunately however, PM10 levels remained relatively low over the weekend and have been low so far this morning.
Looking ahead, more active weather is coming down the pipe this week. More breezes and rain are in the forecast, with the window for rain chances looking to be later Wednesday into Thursday. Rainfall up to an an inch or more may be possible. And at least for now, winds aren't looking to be as potent as they were last week, which will mean a smaller potential for dust. Rain will quickly stamp out any remaining dust chances, too.
For now, PM10 is forecast in the Good AQI category each day.
Check back tomorrow for the latest.
- M. Graves
ADEQ Meteorologist
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