Air Quality Monitor

This page displays current air quality data for the Nogales Post Office monitor, which is operated by the Arizona Department of Environmental Quality. All data are preliminary.

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Current Air Quality: Nogales Post Office

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.

PM10

9 µg/m3

Past 48-Hours


PM2.5

1 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
PM10
PM2.5
1/26/2023
51
5.8
1/27/2023
58
16.9
1/28/2023
40
17.8
1/29/2023
42
11.9
1/30/2023
38
10.7
1/31/2023
14.4
2/1/2023

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.
PM10
PM2.5
Daily High For February 2
178
2/2/2006
22.5
2/2/2020
Daily Low For February 2
26
2/2/2015
6.1
2/2/2022
Monthly High For February
240
2/25/2006
27.7
2/13/2022
Monthly Low For February
2
2/15/2018
0.9
2/15/2017
All-Time High
351
12/10/2005
148.2
1/1/2014
All-Time Low
-1*
6/15/2022
-1.1*
3/2/2014

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.
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Historical Data

Access historical data from the monitor. Historical Data >