Tucson Forecast

Image of Downtown Tucson

Air Quality Hourly Forecast | Tucson

Click on each day to view forecast.

Wednesday Forecast:


Ozone

58 AQI
Max 8-hr Avg: 57 ppb

PM10

40 AQI
24-hr Avg: 43 µg/m3

PM2.5

40 AQI
24-hr Avg: 9.5 µg/m3

Thursday Forecast:


Ozone

51 AQI
Max 8-hr Avg: 55 ppb

PM10

36 AQI
24-hr Avg: 39 µg/m3

PM2.5

35 AQI
24-hr Avg: 8.5 µg/m3

Friday Forecast:


Ozone

49 AQI
Max 8-hr Avg: 53 ppb

PM10

43 AQI
24-hr Avg: 46 µg/m3

PM2.5

38 AQI
24-hr Avg: 9.2 µg/m3

Saturday Forecast:


Ozone

50 AQI
Max 8-hr Avg: 54 ppb

PM10

38 AQI
24-hr Avg: 41 µg/m3

PM2.5

33 AQI
24-hr Avg: 7.9 µg/m3

Sunday Forecast:


Ozone

51 AQI
Max 8-hr Avg: 55 ppb

PM10

35 AQI
24-hr Avg: 38 µg/m3

PM2.5

31 AQI
24-hr Avg: 7.5 µg/m3

Air Quality By Pollutant:

Pollutant
Wednesday
5/18/2022
Thursday
5/19/2022
Friday
5/20/2022
Saturday
5/21/2022
Sunday
5/22/2022
O3
58
51
49
50
51
PM10
40
36
43
38
35
PM2.5
40
35
38
33
31
Pollutant
WED
THU
FRI
SAT
SUN
O3
58
51
49
50
51
PM10
40
36
43
38
35
PM2.5
40
35
38
33
31
O3 = Ozone, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

There were a few hours yesterday with high PM2.5 concentrations, which was enough to lift PM2.5 into the Moderate AQI category. Particulate levels continue to be a little elevated this morning, but seem to be slowly returning to normal. Ozone and PM10 were fine yesterday, both ending up in the Good AQI range.

As for today, we are forecasting PM2.5 to return to the Good category, as long as there aren't anymore surprise PM2.5 spikes like yesterday. Ozone will continue to hover around the upper Good to lower Moderate AQI range through the week. We expect Friday and Saturday to have lower concentrations due to a trough moving through the region.

Particulates are forecast to stay in the Good AQI category through the forecast period. There will be some breeziness each afternoon, but the strongest winds are forecast to be on Friday as the trough moves through. We are forecasting wind gusts up around 30-35 mph. This may increase PM10 concentrations a little during the gusty winds, be overall we don't expect any significant dust in Tucson.

- R. Nicoll
ADEQ Meteorologist


What Flag Should I Fly?

Thursday: Yellow
Friday: Green

What is the Flag Program and how can my school/organization join? | Learn More >