Air Quality Monitor

Updated On: 3/31/2023 - 8:30 AM
This page displays current air quality data for the Tempe monitor, which is operated by the Maricopa County Air Quality Department. All data are preliminary.

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Current Air Quality: Tempe Updated: 3/31/2023 - 8:30 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

35 ppb

Past 48-Hours

PM10

8 µg/m3

Past 48-Hours

PM2.5

1.4 µg/m3

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
3/24/2023
48
12
3.9
3/25/2023
53
17
6.9
3/26/2023
52
12
5.2
3/27/2023
54
14
5.5
3/28/2023
56
15
5.3
3/29/2023
54
22
6.0
3/30/2023
49
17
2.5

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
Daily High For March 31
60
3/31/2021
63
3/31/2017
9.1
3/31/2017
Daily Low For March 31
2
3/31/2007
16
3/31/2022
5.7
3/31/2020
Monthly High For March
66
3/25/2001
88
3/13/2014
15.6
3/16/2022
Monthly Low For March
2
3/31/2007
2
3/13/2020
1.3
3/22/2021
All-Time High
88
8/11/2001
235
8/8/2018
59.2
1/1/2016
All-Time Low
2
3/31/2007
2
3/13/2020
0.9
1/26/2021
*Negative values can occur when concentrations are below the detectable limits of the instrument.
Period of Record By Pollutant:
Ozone - 6/30/2000
PM10 - 3/1/2012
PM2.5 - 3/1/2012
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.
Date
Concentration (µg/m3)
1/1/2023
38
View past years >

Historical Data

Access historical data from the monitor. Historical Data >