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Click on each day to view forecast.

Friday Forecast:


Ozone

44 AQI
Max 8-hr Avg: 47 ppb

Saturday Forecast:


Ozone

41 AQI
Max 8-hr Avg: 44 ppb

Sunday Forecast:


Ozone

37 AQI
Max 8-hr Avg: 40 ppb

Monday Forecast:


Ozone

38 AQI
Max 8-hr Avg: 41 ppb

Tuesday Forecast:


Ozone

37 AQI
Max 8-hr Avg: 40 ppb

Air Quality By Pollutant:

Pollutant
Friday
9/11/2026
Saturday
9/12/2026
Sunday
9/13/2026
Monday
9/14/2026
Tuesday
9/15/2026
O3
44
41
37
38
37
Pollutant
FRI
SAT
SUN
MON
TUE
O3
44
41
37
38
37
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns


Forecast Discussion:

Thunderstorm activity over and near Flagstaff (and associated cloudiness) will fluctuate from day to day through Tuesday. Winds will trend upward today with breezy to windy afternoons through Tuesday. With cloudiness from time to time, excellent ventilation and the seasonal decrease in daylight hours, anticipate peak 8 hour average Ozone values each day to remain in the Good category - though conditions today may approach the Moderate threshold.

- A. Jamison
ADEQ Meteorologist


What Flag Should I Fly?

Friday: Green
Air quality is good.
Saturday: Green
Air quality is good.