Phoenix Forecast
Air Quality Hourly Forecast | Phoenix
Updated On: 3/20/2023 - 9:49 AM
Click on each day to view forecast.
Monday Forecast:
Ozone
43 AQI
Max 8-hr Avg: 46 ppb
Max 8-hr Avg: 46 ppb
PM10
53 AQI
24-hr Avg: 59 µg/m3
24-hr Avg: 59 µg/m3
PM2.5
32 AQI
24-hr Avg: 7.7 µg/m3
24-hr Avg: 7.7 µg/m3
Tuesday Forecast:
Ozone
41 AQI
Max 8-hr Avg: 44 ppb
Max 8-hr Avg: 44 ppb
PM10
30 AQI
24-hr Avg: 32 µg/m3
24-hr Avg: 32 µg/m3
PM2.5
24 AQI
24-hr Avg: 5.7 µg/m3
24-hr Avg: 5.7 µg/m3
Wednesday Forecast:
Ozone
43 AQI
Max 8-hr Avg: 46 ppb
Max 8-hr Avg: 46 ppb
PM10
17 AQI
24-hr Avg: 18 µg/m3
24-hr Avg: 18 µg/m3
PM2.5
19 AQI
24-hr Avg: 4.5 µg/m3
24-hr Avg: 4.5 µg/m3
Thursday Forecast:
Ozone
49 AQI
Max 8-hr Avg: 53 ppb
Max 8-hr Avg: 53 ppb
PM10
25 AQI
24-hr Avg: 27 µg/m3
24-hr Avg: 27 µg/m3
PM2.5
27 AQI
24-hr Avg: 6.4 µg/m3
24-hr Avg: 6.4 µg/m3
Friday Forecast:
Ozone
54 AQI
Max 8-hr Avg: 56 ppb
Max 8-hr Avg: 56 ppb
PM10
30 AQI
24-hr Avg: 32 µg/m3
24-hr Avg: 32 µg/m3
PM2.5
31 AQI
24-hr Avg: 7.5 µg/m3
24-hr Avg: 7.5 µg/m3
Air Quality By Pollutant:
Pollutant
Monday
3/20/2023
3/20/2023
Tuesday
3/21/2023
3/21/2023
Wednesday
3/22/2023
3/22/2023
Thursday
3/23/2023
3/23/2023
Friday
3/24/2023
3/24/2023
O3
43
41
43
49
54
PM10
53
30
17
25
30
PM2.5
32
24
19
27
31
Pollutant
MON
TUE
WED
THU
FRI
O3
43
41
43
49
54
PM10
53
30
17
25
30
PM2.5
32
24
19
27
31
Forecast Discussion:
Today is the vernal equinox, marking the first day of spring. However, meteorologically, we've already been experiencing the effects of the transition from the cold season to the warm season. Last week, a storm system gave the Phoenix Valley a generous measure of rain and cooler temperatures. Another one is in store for us this week.First of all, you may have noticed the cloudy skies this morning--and yesterday morning. This is the first indication that something is approaching. For the air quality, clouds help to prevent ozone formation. However, clouds do tend to allow locally elevated PM10 (dust) and PM2.5 (smoke) to linger a bit longer in the mornings.
Next, you may notice the winds. Today through Wednesday morning, winds will persist out of the southwest, and become breezy in the afternoons. Pockets of dust may be possible in dust-prone areas. But also, locally driven PM may improve as winds disperse it. Industrial areas south/southwest of the Phoenix metro area should see the highest PM levels.
Lastly, you should notice the rain. Rain chances begin on Tuesday, thanks to some small disturbances overhead. However, when a cold front pushes through Wednesday morning, rain will be at its heaviest; winds will also be at their strongest, still out of the south/southwest. Given the rain, PM10 and PM2.5 levels will be low, and the threat of dust non-existent.
In the wake of the cold front, temperatures will be cooler, winds will shift to out of the west, and cloud cover will thin out. Much calmer weather conditions are expected on Thursday and Friday. During this time, ozone, PM10, and PM2.5 will trend upwards again. The main pollutant to watch will be ozone though, as Moderate levels become increasingly more probable this time of year.
Check back tomorrow morning for the latest!
- M. Graves
ADEQ Meteorologist
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