Air Quality Monitor

Updated On: 3/31/2023 - 8:30 AM
This page displays current air quality data for the Grand Canyon NP monitor, which is operated by the National Park Service. All data are preliminary.

View all monitors >

Current Air Quality: Grand Canyon NP 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

44 ppb

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
3/24/2023
48
3/25/2023
50
3/26/2023
51
3/27/2023
51
3/28/2023
48
3/29/2023
54
3/30/2023
51

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
Daily High For March 31
60
3/31/2004
Daily Low For March 31
44
3/31/2011
Monthly High For March
76
3/23/1999
Monthly Low For March
30
3/11/2020
All-Time High
89
7/1/2005
All-Time Low
18
8/31/1989
*Negative values can occur when concentrations are below the detectable limits of the instrument.
Period of Record By Pollutant:
Ozone - 6/30/1989
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.
View past years >

Historical Data

Access historical data from the monitor. Historical Data >