Phoenix Forecast

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Air Quality Hourly Forecast | Phoenix

Click on each day to view forecast.

Friday Forecast:


Ozone

34 AQI
Max 8-hr Avg: 37 ppb

PM10

36 AQI
24-hr Avg: 39 µg/m3

PM2.5

54 AQI
24-hr Avg: 13.7 µg/m3

Saturday Forecast:


Ozone

38 AQI
Max 8-hr Avg: 41 ppb

PM10

31 AQI
24-hr Avg: 33 µg/m3

PM2.5

53 AQI
24-hr Avg: 13.2 µg/m3

Sunday Forecast:


Ozone

39 AQI
Max 8-hr Avg: 42 ppb

PM10

30 AQI
24-hr Avg: 32 µg/m3

PM2.5

51 AQI
24-hr Avg: 12.1 µg/m3

Monday Forecast:


Ozone

36 AQI
Max 8-hr Avg: 39 ppb

PM10

32 AQI
24-hr Avg: 35 µg/m3

PM2.5

35 AQI
24-hr Avg: 8.5 µg/m3

Tuesday Forecast:


Ozone

35 AQI
Max 8-hr Avg: 38 ppb

PM10

33 AQI
24-hr Avg: 36 µg/m3

PM2.5

30 AQI
24-hr Avg: 7.2 µg/m3

Air Quality By Pollutant:

Pollutant
Friday
1/18/2019
Saturday
1/19/2019
Sunday
1/20/2019
Monday
1/21/2019
Tuesday
1/22/2019
O3
34
38
39
36
35
CO
11
13
14
11
9
PM10
36
31
30
32
33
PM2.5
54
53
51
35
30
Pollutant
FRI
SAT
SUN
MON
TUE
O3
34
38
39
36
35
CO
11
13
14
11
9
PM10
36
31
30
32
33
PM2.5
54
53
51
35
30
O3 = Ozone, CO = Carbon Monoxide, PM10 = Particles ≤ 10 microns, PM2.5 = Particles ≤ 2.5 microns

Forecast Discussion:

A small trough will be passing through Arizona today followed by a ridge over the weekend. Then, another trough will be influencing the area on Monday and Tuesday. Unfortunately, we don't anticipate any rain in the Phoenix area with the trough today. Rain would be nice as PM2.5 levels are running a little higher this morning. We now expect PM2.5 to reach the low Moderate AQI category today. This will likely continue through Sunday due to calmer weather conditions over the weekend. We forecast PM2.5 to drop back into the Good AQI range on Monday and Tuesday due to better ventilation from the next trough.

PM10 should remain in the Good AQI range through the period due to more stable soils from the recent rains. Ozone should also stay in the Good range due to the shorter day lengths and lower sun angle this time of year (sunlight is needed for ozone formation).

- R. Nicoll
ADEQ Meteorologist


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Monday: Green
Tuesday: Green

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