Air Quality Monitor

This page displays current air quality data for the Corona de Tucson monitor, which is operated by the Pima County Department of Environmental Quality. All data are preliminary.

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Current Air Quality: Corona de Tucson

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



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
3/24/2023
10
3/25/2023
19
3/26/2023
17
3/27/2023
13
3/28/2023
12
3/29/2023
9
3/30/2023
10

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
Daily High For March 31
22
3/31/2019
Daily Low For March 31
9
3/31/2022
Monthly High For March
32
3/1/2021
Monthly Low For March
2
3/12/2019
All-Time High
158
8/15/2022
All-Time Low
0
8/14/2021

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.
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Historical Data

Access historical data from the monitor. Historical Data >