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Thursday Forecast:


Ozone

45 AQI
Max 8-hr Avg: 49 ppb

PM10

49 AQI
24-hr Avg: 53 µg/m3

PM2.5

28 AQI
24-hr Avg: 5.1 µg/m3

Friday Forecast:


Ozone

49 AQI
Max 8-hr Avg: 53 ppb

PM10

58 AQI
24-hr Avg: 70 µg/m3

PM2.5

34 AQI
24-hr Avg: 6.2 µg/m3

Saturday Forecast:


Ozone

50 AQI
Max 8-hr Avg: 54 ppb

PM10

58 AQI
24-hr Avg: 70 µg/m3

PM2.5

37 AQI
24-hr Avg: 6.6 µg/m3

Sunday Forecast:


Ozone

49 AQI
Max 8-hr Avg: 53 ppb

PM10

52 AQI
24-hr Avg: 57 µg/m3

PM2.5

32 AQI
24-hr Avg: 5.7 µg/m3

Monday Forecast:


Ozone

51 AQI
Max 8-hr Avg: 55 ppb

PM10

53 AQI
24-hr Avg: 59 µg/m3

PM2.5

29 AQI
24-hr Avg: 5.2 µg/m3

Air Quality By Pollutant:

Pollutant
Thursday
6/18/2026
Friday
6/19/2026
Saturday
6/20/2026
Sunday
6/21/2026
Monday
6/22/2026
O3
45
49
50
49
51
PM10
49
58
58
52
53
PM2.5
28
34
37
32
29
Pollutant
THU
FRI
SAT
SUN
MON
O3
45
49
50
49
51
PM10
49
58
58
52
53
PM2.5
28
34
37
32
29
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns


Forecast Discussion:

Thunderstorm activity around the state is expected to be less today - most noticeably over south-central and southeast AZ - but with another round over the higher terrain of central and eastern AZ. Thus, thunderstorm outflow winds are less likely to affect Western Pinal County. However, there is still at least a slight chance of outflows from northeast Pima County reaching the forecast area later today. Storm activity trends down even more Friday as drier air overspreads the state with little to no coverage. Conditions remain that way through at least Monday. Temperatures will be close to seasonal averages.

Peak 8 hour Ozone is expected to be in the upper Good range today and increase slightly Friday to near the Moderate threshold. Values are projected to hover around the the Moderate threshold through Monday.

Daily average PM10 is anticipated to be in the upper Good range today (close to the Moderate threshold) with a better start to the morning than some other days before climbing to the low Moderate range Friday and remaining there through Monday.

Daily average PM2.5 is expected to remain in the Good range.


- A. Jamison
ADEQ Meteorologist


What Flag Should I Fly?

Thursday: Green
Air quality is good.
Friday: 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.