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 ADEQ 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 09/26/2017 , 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 AM0.0440.0420.0040.0030.0340.0030.030
3 AM0.0430.0410.0010.0010.0290.0020.028
4 AM0.0430.0410.0010.0000.0290.0020.024
5 AM0.0430.0420.0030.0000.0290.0010.023
6 AM0.0420.0430.0020.0000.0230.0050.019
7 AM0.0410.0430.0010.0010.0110.0020.016
8 AM0.0400.0440.0070.0050.0200.0030.019
9 AM0.0420.0430.0240.0240.0330.0110.031
10 AM0.0460.0440.0390.0400.0430.0280.042
11 AM0.0460.0430.0430.0490.0480.0370.048
12 Noon0.0440.0430.0440.0510.0510.0380.050
1 PM0.0450.0430.0470.0510.0480.0420.048
2 PM0.0440.0440.0480.0510.0450.0390.052
3 PM0.0450.0460.0480.0580.0450.0370.052

Yesterday's Data

( 09/25/2017 )

Time
(CST)
Deer
Eagle Mountain
Fayetteville
Marion
N Little Rock
Airport
N Little Rock,
Pike Ave &
River Rd
Springdale
2 AM0.0470.0460.0070.0070.0280.0020.029
3 AM0.0450.0460.0050.0040.0260.0010.030
4 AM0.0430.0450.0020.0020.0240.0010.028
5 AM0.0410.0460.0010.0040.0230.0000.020
6 AM0.0400.0460.0000.0020.0210.0000.015
7 AM0.0390.0430.0000.0030.0160.0020.015
8 AM0.0380.0440.0090.0100.0210.0080.024
9 AM0.0400.0440.0240.0180.0280.0190.030
10 AM0.0400.0430.0450.0360.0370.0270.041
11 AM0.0400.0450.0500.0500.0480.0400.044
12 Noon0.0420.0460.0510.0630.0450.0400.048
1 PM0.0430.0470.0500.0710.0450.0400.047
2 PM0.0440.0490.0520.0650.0460.0440.046
3 PM0.0450.0480.0530.0600.0520.0450.047
4 PM0.0440.0500.0520.0550.0520.0500.047
5 PM0.0460.0510.0510.0570.0530.0480.047
6 PM0.0500.0490.0470.0450.0550.0440.044
7 PM0.0560.0470.0310.0360.0470.0370.035
8 PM0.0510.0440.0200.0330.0410.0260.029
9 PM0.0460.0430.0160.0290.0400.0090.035
10 PM0.0450.0420.0130.0200.0400.0020.037
11 PM0.0440.0410.0100.0100.0360.0020.033
12 Midnight0.0440.0410.0080.0030.0330.0010.033

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)