Ozone Monitor Stations

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 - Hourly Readings

Current Data

( Last Updated 03/04/2015 , at 06:15 AM CST )

Time
(CST)
Deer
AR
DSR
AR
Eagle Mountain
AR
Fayetteville
AR
Marion
AR
N Little Rock
Airport
PARRB
AR
Springdale
AR
2 AM0.0160.0000.0210.0110.0060.0130.0070.012
3 AM0.0170.0020.0190.0140.0100.0100.0090.013
4 AM0.0170.0080.0200.0140.0100.0100.0090.013
5 AM0.0170.0010.0170.0140.0110.0110.0080.015
6 AM0.0170.0000.0170.0160.0130.0080.0070.018

Yesterday's Data

( 03/03/2015 )

Time
(CST)
Deer
AR
DSR
AR
Eagle Mountain
AR
Fayetteville
AR
Marion
AR
N Little Rock
Airport
PARRB
AR
Springdale
AR
2 AM0.0300.0250.0280.0310.0250.0290.0140.023
3 AM0.0290.0230.0270.0300.0130.0300.0220.027
4 AM0.0280.0220.0260.0280.0030.0220.0230.026
5 AM0.0270.0180.0250.0270.0070.0220.0200.022
6 AM0.0260.0140.0230.0250.0050.0230.0190.022
7 AM0.0250.0120.0210.0260.0030.0140.0160.022
8 AM0.0240.0080.0190.0220.0010.0160.0130.020
9 AM0.0240.0110.0180.0200.0060.0140.0110.018
10 AM0.0220.0100.0170.0180.0090.0120.0140.017
11 AM0.0210.0100.0190.0170.0090.0150.0120.016
12 Noon0.0200.010-0.9990.0170.0100.0120.0110.016
1 PM0.0180.0130.0210.0190.0090.0140.0120.018
2 PM0.0170.0130.0230.0200.0100.0160.0130.020
3 PM0.0170.0140.0190.0210.0110.0150.0140.019
4 PM0.0180.0110.0180.0200.0120.0160.0150.017
5 PM0.0200.0060.0200.0170.0110.0150.0120.015
6 PM0.0200.0050.0180.0150.0120.0120.0070.012
7 PM0.0210.0040.0170.0130.0090.0070.0040.008
8 PM0.0210.0000.0180.0110.0090.0060.0000.008
9 PM0.0210.0000.0180.0100.0100.0050.0000.002
10 PM0.0200.0000.0160.0060.0110.0060.0000.001
11 PM0.0200.0000.0150.0120.0120.0050.0010.009
12 Midnight0.0180.0000.0180.0150.0120.0080.0010.011

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 - 0.059 0.000 - 0.084 Good Green
51 - 100 0.060 - 0.075 0.085 - 0.124 Moderate Yellow
100 - 150 0.076 - 0.095 0.125 - 0.164 Unhealthy for
Sensitive Groups
Orange
151 - 200 0.096 - 0.115 0.165 - 0.204 Unhealthy Red
201 - 300 0.116 - 0.374 0.205 - 0.404 Very Unhealthy Purple
301 - 400 0.375 & 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)