Updated On: 8/4/2026 - 9:34 AM
Click on each day to view forecast.
Tuesday Forecast:
Ozone
67 AQI
Max 8-hr Avg: 60 ppb
Max 8-hr Avg: 60 ppb
PM10
26 AQI
24-hr Avg: 28 µg/m3
24-hr Avg: 28 µg/m3
PM2.5
47 AQI
24-hr Avg: 8.5 µg/m3
24-hr Avg: 8.5 µg/m3
Wednesday Forecast:
Ozone
74 AQI
Max 8-hr Avg: 62 ppb
Max 8-hr Avg: 62 ppb
PM10
30 AQI
24-hr Avg: 32 µg/m3
24-hr Avg: 32 µg/m3
PM2.5
48 AQI
24-hr Avg: 8.7 µg/m3
24-hr Avg: 8.7 µg/m3
Thursday Forecast:
Ozone
77 AQI
Max 8-hr Avg: 63 ppb
Max 8-hr Avg: 63 ppb
PM10
26 AQI
24-hr Avg: 28 µg/m3
24-hr Avg: 28 µg/m3
PM2.5
39 AQI
24-hr Avg: 7.1 µg/m3
24-hr Avg: 7.1 µg/m3
Friday Forecast:
Ozone
71 AQI
Max 8-hr Avg: 61 ppb
Max 8-hr Avg: 61 ppb
PM10
22 AQI
24-hr Avg: 24 µg/m3
24-hr Avg: 24 µg/m3
PM2.5
40 AQI
24-hr Avg: 7.2 µg/m3
24-hr Avg: 7.2 µg/m3
Saturday Forecast:
Ozone
71 AQI
Max 8-hr Avg: 61 ppb
Max 8-hr Avg: 61 ppb
PM10
24 AQI
24-hr Avg: 26 µg/m3
24-hr Avg: 26 µg/m3
PM2.5
38 AQI
24-hr Avg: 6.8 µg/m3
24-hr Avg: 6.8 µg/m3
Air Quality By Pollutant:
Pollutant
Tuesday
8/4/2026
8/4/2026
Wednesday
8/5/2026
8/5/2026
Thursday
8/6/2026
8/6/2026
Friday
8/7/2026
8/7/2026
Saturday
8/8/2026
8/8/2026
O3
67
74
77
71
71
PM10
26
30
26
22
24
PM2.5
47
48
39
40
38
Pollutant
TUE
WED
THU
FRI
SAT
O3
67
74
77
71
71
PM10
26
30
26
22
24
PM2.5
47
48
39
40
38
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns
Forecast Discussion:
Yesterday, one ozone and one PM2.5 monitor in the Tucson area reached the low Moderate AQI range, while everything else stayed in the Good range. While PM10 did stay in the Good AQI range, there was a brief spike in PM10 concentrations with thunderstorm outflows in the evening. Fortunately, we didn't see nearly as much dust as some other parts of the state.
Looking ahead, there will continue to be chances for thunderstorm activity around the area most afternoons. As a result, it won't be surprising to see more brief dust, but like yesterday, we don't expect enough to increase the AQI category. As for ozone, we are forecasting ozone to stay in the Moderate AQI category through the forecast period with high pressure continuing to dominate the region.
- R. Nicoll
ADEQ Meteorologist
Looking ahead, there will continue to be chances for thunderstorm activity around the area most afternoons. As a result, it won't be surprising to see more brief dust, but like yesterday, we don't expect enough to increase the AQI category. As for ozone, we are forecasting ozone to stay in the Moderate AQI category through the forecast period with high pressure continuing to dominate the region.
- R. Nicoll
ADEQ Meteorologist
What Flag Should I Fly?
Tuesday: Yellow
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Wednesday: Yellow
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