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 09/24/2018 , at 3:15 PM CST )

Time
(CST)
Little Rock,
Doyle Springs
Road
El DoradoMarion N Little Rock,
Pike Ave &
River Rd
Springdale
1 AM 2.83.95.22.22.6
2 AM 3.16.33.82.82.0
3 AM 3.83.23.22.82.2
4 AM 3.55.94.73.13.4
5 AM 3.98.16.93.33.1
6 AM 4.36.47.13.64.1
7 AM 5.29.58.54.23.8
8 AM 4.810.07.74.53.6
9 AM 7.812.88.26.43.9
10 AM 7.09.97.56.96.6
11 AM 7.59.78.07.64.4
12 Noon 7.512.07.87.26.4
1 PM 10.88.68.06.94.2
2 PM 10.211.16.57.44.3
3 PM 9.3-999.07.68.63.4

Yesterday's Data

( 09/23/2018 )

Time
(CST)
Little Rock,
Doyle Springs
Road
El DoradoMarion N Little Rock,
Pike Ave &
River Rd
Springdale
1 AM 2.71.34.52.12.4
2 AM 3.33.62.02.22.5
3 AM 2.55.42.11.23.2
4 AM 2.31.64.91.42.9
5 AM 2.82.43.11.73.6
6 AM 3.53.1-0.1-999.03.4
7 AM 3.54.48.6-999.02.6
8 AM 2.94.63.4-999.02.9
9 AM 3.14.8-1.545.04.4
10 AM 3.06.03.64.94.6
11 AM 1.82.74.72.13.8
12 Noon 2.22.64.41.52.6
1 PM 2.34.87.11.43.5
2 PM 1.66.9-2.90.51.2
3 PM 2.95.52.82.03.4
4 PM 3.18.512.61.71.1
5 PM 3.59.68.02.94.4
6 PM 5.06.35.34.33.5
7 PM 5.68.32.15.53.6
8 PM 5.26.63.74.95.5
9 PM 3.16.7-2.73.84.1
10 PM 3.36.53.03.34.1
11 PM 2.94.03.12.34.1
12 Midnight3.58.23.93.32.3

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