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 04/26/2018 , at 03:15 AM CST )

Time
(CST)
Little Rock,
Doyle Springs
Road
El DoradoMarion N Little Rock,
Pike Ave &
River Rd
Springdale
1 AM 6.13.09.06.33.0
2 AM 7.11.37.56.24.0
3 AM 6.4-999.0-999.06.05.2

Yesterday's Data

( 04/25/2018 )

Time
(CST)
Little Rock,
Doyle Springs
Road
El DoradoMarion N Little Rock,
Pike Ave &
River Rd
Springdale
1 AM 10.512.48.811.715.6
2 AM 10.511.76.68.513.5
3 AM 10.89.98.28.516.8
4 AM 8.711.05.96.014.6
5 AM 14.811.35.912.317.2
6 AM 14.010.06.510.818.1
7 AM 19.314.312.812.916.4
8 AM 15.611.43.210.714.1
9 AM 8.210.14.911.313.9
10 AM 8.27.78.19.312.4
11 AM 6.29.55.58.613.0
12 Noon 15.48.117.312.210.3
1 PM 11.48.711.17.69.8
2 PM 11.48.87.69.711.6
3 PM 10.210.24.49.012.4
4 PM 8.69.60.48.810.5
5 PM 8.89.617.88.910.4
6 PM 11.012.57.29.010.7
7 PM 10.29.79.68.74.5
8 PM 10.013.210.99.64.4
9 PM 8.58.59.88.63.3
10 PM 7.16.26.98.01.1
11 PM 8.68.811.66.11.8
12 Midnight6.27.410.46.22.8

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