Air Quality Monitor

Updated On: 3/31/2023 - 9:30 AM
This page displays current air quality data for the South Phoenix monitor, which is operated by the Maricopa County Air Quality Department. All data are preliminary.

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Current Air Quality: South Phoenix Updated: 3/31/2023 - 9:30 AM

Current concentrations for each available pollutant, along with a graph displaying hourly data over the past 48-hours. The colors are using the AQI color scheme to highlight periods of good or poor air quality. Values are updated hourly at 30 minutes past the hour.

Ozone

36 ppb

Past 48-Hours

PM10

17 µg/m3

Past 48-Hours

PM2.5

4.7 µg/m3

Past 48-Hours

CO

0.3 ppm

Past 48-Hours


Past Seven Days

Concentration values for the past seven days for each available pollutant. While the table displays concentrations, the color corresponds to the Air Quality Index (AQI).
Date
Ozone
(ppb)
Max 8-Hour Avg
PM10
(µg/m3)
24-Hour Avg
PM2.5
(µg/m3)
24-Hour Avg
CO
(ppm)
Max 8-Hour Avg
3/24/2023
46
18
4.3
0.4
3/25/2023
50
25
9.8
0.4
3/26/2023
51
15
5.2
0.4
3/27/2023
52
20
6.7
0.5
3/28/2023
57
22
6.4
0.5
3/29/2023
53
22
6.8
0.6
3/30/2023
50
16
2.5
0.3

Station History

The table displays the current day, month, and all-time high and low concentrations for each pollutant, along with the day on which the value occurred. If a tie occurs, the date displayed will be the most recent occurrence.
Ozone
(ppb)
Max 8-Hour Avg
PM10
(µg/m3)
24-Hour Avg
PM2.5
(µg/m3)
24-Hour Avg
CO
(ppm)
Max 8-Hour Avg
Daily High For March 31
66
3/31/2002
66
3/31/2017
12.2
3/31/2017
2.0
3/31/2001
Daily Low For March 31
40
3/31/2006
19
3/31/2022
4.8
3/31/2011
0.2
3/31/2022
Monthly High For March
71
3/25/2000
168
3/12/2011
17.5
3/23/2013
2.6
3/12/2000
Monthly Low For March
12
3/11/2020
2
3/13/2020
0.7
3/18/2020
0.0
3/23/2007
All-Time High
90
7/11/2002
420
8/25/2011
134.1
1/1/2018
5.9
1/14/2000
All-Time Low
0
11/10/2021
-2*
2/3/2019
-3.6*
2/3/2019
0.0
8/25/2022
*Negative values can occur when concentrations are below the detectable limits of the instrument.
Period of Record By Pollutant:
Ozone - 9/30/1999
PM10 - 7/1/2007
PM2.5 - 5/1/2010
CO - 10/1/1999
Note: Gaps may exist in the period of record and is only for continous monitor data (not filter).

Exceedances This Year

A list of the number of exceedances since the start of the year for each available pollutant. Expand the pollutant to view the date and concentration of each exceedance.
No exceedance days.
No exceedance days.
No exceedance days.
No exceedance days.
View past years >

Historical Data

Access historical data from the monitor. Historical Data >