Particulate Matter Monitor Stations - Arkansas

These readings represent 1hr average PM2.5 (ug/m3), as reported directly from the particulate matter monitoring stations maintained by ADEQ throughout the state. Automated readings are processed hourly throughout the day, starting at approx. 1 am through midnight central standard time.

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.

Particulate Matter Monitor Stations - Arkansas Hourly Readings

Current Data

( Last Updated 06/25/2018 , at 05:15 AM CST )

Time
(CST)
Little Rock,
Doyle Springs
Road
El DoradoMarion N Little Rock,
Pike Ave &
River Rd
Springdale
1 AM 4.53.11.83.64.2
2 AM 5.54.62.24.86.4
3 AM 6.87.04.74.14.4
4 AM 8.58.88.76.46.7
5 AM 7.79.97.66.410.1

Yesterday's Data

( 06/24/2018 )

Time
(CST)
Little Rock,
Doyle Springs
Road
El DoradoMarion N Little Rock,
Pike Ave &
River Rd
Springdale
1 AM 10.715.916.610.86.3
2 AM 9.814.48.27.53.4
3 AM 14.29.45.37.26.2
4 AM 15.27.212.115.68.4
5 AM 13.57.16.514.28.2
6 AM 12.06.76.612.69.8
7 AM 13.17.4-4.612.814.0
8 AM 12.210.64.411.10.7
9 AM 10.69.06.89.96.5
10 AM 6.910.311.21.27.3
11 AM 4.25.211.55.07.5
12 Noon 11.85.910.010.93.2
1 PM 10.64.69.28.76.0
2 PM 8.07.87.87.74.9
3 PM 10.48.314.79.05.9
4 PM 8.510.59.58.02.6
5 PM 9.911.310.17.99.2
6 PM 11.69.010.510.24.1
7 PM 12.213.08.79.7-1.9
8 PM 4.812.09.12.06.7
9 PM 4.65.98.13.46.1
10 PM 3.21.17.42.87.7
11 PM 4.0-1.44.53.32.9
12 Midnight6.15.83.44.64.7

AQI Numbers

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

Index
Values
PM2.5
(24hr)
(ug/m3)
PM10
(24hr)
(ug/m3)
Air
Quality
Colors
0 - 50 0.0 - 12.0 0 - 54 Good Green
51 - 100 12.1 - 35.4 55 - 154 Moderate Yellow
100 - 150 35.5 - 55.4 155 - 254 Unhealthy for
Sensitive Groups
Orange
151 - 200 55.5 - 150.4 255 - 354 Unhealthy Red
201 - 300 150.5 - 250.4 355 - 424 Very Unhealthy Purple
301 - 400 250.5 - 500.4 425 - 604 Hazardous Maroon

Explanation of Pollutant Categories

Pollutant Sensitive Group
PM10 = Particulate Matter < 10 microns People with respiratory or heart disease, the elderly and children
PM2.5 = Particulate Matter < 2.5 microns People with respiratory or heart disease, the elderly and children
ug/m3 = micrograms per cubic meter of air