Ozone Monitor Stations - Arkansas

These readings represent one hour (1 hr) average ozone parts per million (ppm), as reported directly from the six ozone monitoring stations maintained by DEQ throughout the state. Automated readings are processed hourly throughout the day, starting at approximately 2 am through midnight central standard time (CST).

NOTE: This information is "raw data" as automatically collected and reported by the monitoring stations and has not been quality control checked, analyzed, or verified.

Ozone Monitor Stations - Arkansas Hourly Readings

Current Data

( Last Updated 05/18/2024 , at 3:15 PM CST )

Time
(CST)
Deer
Eagle Mountain
Fayetteville
Marion
N Little Rock
Airport
N Little Rock,
Pike Ave &
River Rd
Springdale
2 AM0.0360.0500.0060.0190.0210.0240.019
3 AM0.0390.0490.0060.0160.0240.0270.020
4 AM0.0390.0480.0050.0170.0240.0330.014
5 AM0.0400.0490.0030.0390.0250.0300.009
6 AM0.0400.0480.0040.0470.0220.0270.007
7 AM0.0390.0470.0100.0480.0280.0260.017
8 AM0.0390.0460.0230.0470.0360.0320.029
9 AM0.0410.0430.0370.0470.0420.0330.036
10 AM0.0410.0390.0480.0520.0480.0410.050
11 AM0.0410.0440.0510.0540.0450.0450.052
12 Noon0.0410.0440.0520.0580.0440.0480.054
1 PM0.0410.0460.0600.0460.0450.055
2 PM0.047
3 PM

Yesterday's Data

( 05/17/2024 )

Time
(CST)
Deer
Eagle Mountain
Fayetteville
Marion
N Little Rock
Airport
N Little Rock,
Pike Ave &
River Rd
Springdale
2 AM0.0450.0340.0110.0210.0320.0290.015
3 AM0.0350.0370.0070.0380.0340.0230.014
4 AM0.0340.0400.0030.0440.0330.0210.012
5 AM0.0420.0480.0030.0380.0350.0190.013
6 AM0.0390.0550.0040.0290.0340.0120.013
7 AM0.0390.0510.0120.0260.0350.0230.009
8 AM0.0410.0450.0320.0280.0390.0270.016
9 AM0.0340.0430.0360.0320.0430.0310.026
10 AM0.0270.0470.0430.0410.0450.0360.038
11 AM0.0340.0510.0450.0480.0480.0410.045
12 Noon0.0350.0520.0480.0510.0550.0500.047
1 PM0.0400.0510.0420.0560.0540.0520.046
2 PM0.0380.0520.0390.0640.0600.0560.043
3 PM0.0300.0520.0290.0680.0660.0540.040
4 PM0.0280.0500.0260.0680.0680.0510.034
5 PM0.0360.0490.0250.0650.0580.0430.030
6 PM0.0400.0490.0240.0620.0450.0400.032
7 PM0.0410.0490.0220.0520.0360.0350.026
8 PM0.0430.0450.0330.0450.0290.0260.016
9 PM0.0450.0550.0290.0360.0410.0130.021
10 PM0.0410.0570.0160.0280.0410.0230.022
11 PM0.0450.0520.0120.0230.0330.0340.026
12 Midnight0.0410.0510.0100.0180.0350.0300.025

AQI Numbers

The range for the AQI is 0-500 and is related to air quality as follows:

Index
Values
O3
(8hr)
(ppm)
O3
(1hr)
(ppm)
Air
Quality
Colors
0 - 50 0.000 - 0.054 0.000 - 0.084 Good Green
51 - 100 0.055 - 0.070 0.085 - 0.124 Moderate Yellow
100 - 150 0.071 - 0.085 0.125 - 0.164 Unhealthy for
Sensitive Groups
Orange
151 - 200 0.086 - 0.105 0.165 - 0.204 Unhealthy Red
201 - 300 0.106 - 0.200 0.205 - 0.404 Very Unhealthy Purple
301 - 400 0.201 & above 0.405 - 0.604 Hazardous Maroon

Explanation of Pollutant Categories

Pollutant Sensitive Group
O3 = Ozone Children and people with asthma
ppm = parts per million (1 part pollutant in 1 million parts of air)