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 06/17/2019 , at 2:15 PM CST )

Time
(CST)
Little Rock,
Doyle Springs
Road
El DoradoMarion N Little Rock,
Pike Ave &
River Rd
Springdale
1 AM 6.03.65.35.76.2
2 AM 5.64.63.75.64.5
3 AM 4.75.14.34.04.0
4 AM 5.15.93.74.04.9
5 AM 6.06.53.05.13.1
6 AM 5.89.42.95.75.4
7 AM 5.410.53.04.35.7
8 AM 5.98.21.35.54.9
9 AM 7.311.83.55.74.9
10 AM 7.49.57.45.84.8
11 AM 7.74.67.57.56.2
12 Noon 6.26.54.66.72.4
1 PM 5.95.09.2-999.00.7
2 PM -999.05.6-999.0-999.05.8

Yesterday's Data

( 06/16/2019 )

Time
(CST)
Little Rock,
Doyle Springs
Road
El DoradoMarion N Little Rock,
Pike Ave &
River Rd
Springdale
1 AM 8.810.87.58.67.9
2 AM 6.910.58.76.912.1
3 AM 10.511.88.610.213.7
4 AM 9.813.39.19.72.7
5 AM 11.612.410.911.9-1.4
6 AM 10.915.013.411.02.0
7 AM 10.616.513.310.71.4
8 AM 10.417.212.511.2-1.5
9 AM 8.114.811.09.70.6
10 AM 5.07.111.75.37.5
11 AM 3.97.711.71.24.9
12 Noon 2.24.27.32.61.0
1 PM 4.31.511.93.10.0
2 PM 5.02.226.32.32.4
3 PM 4.02.112.72.95.2
4 PM 4.4-1.44.23.63.1
5 PM 1.02.21.70.02.0
6 PM 4.10.916.13.45.9
7 PM 7.36.47.25.27.7
8 PM 10.96.3-4.45.69.2
9 PM 7.34.27.46.513.8
10 PM 5.20.715.43.89.9
11 PM 5.02.56.26.14.2
12 Midnight3.82.92.23.06.6

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