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 11/18/2018 , at 2:15 PM CST )

Time
(CST)
Little Rock,
Doyle Springs
Road
El DoradoMarion N Little Rock,
Pike Ave &
River Rd
Springdale
1 AM 12.113.69.813.314.2
2 AM 15.013.710.714.214.3
3 AM 13.521.510.413.114.5
4 AM 14.312.09.513.213.8
5 AM 14.912.910.713.314.2
6 AM 14.813.110.714.014.9
7 AM 15.212.711.913.915.5
8 AM 16.613.710.817.616.6
9 AM 15.113.410.014.116.2
10 AM 17.413.011.214.315.6
11 AM 16.711.012.612.915.4
12 Noon 12.28.511.29.714.6
1 PM 11.69.011.38.59.1
2 PM 12.29.18.8-999.03.9

Yesterday's Data

( 11/17/2018 )

Time
(CST)
Little Rock,
Doyle Springs
Road
El DoradoMarion N Little Rock,
Pike Ave &
River Rd
Springdale
1 AM 28.49.114.213.09.1
2 AM 29.99.313.321.77.0
3 AM 23.29.112.817.67.6
4 AM 20.110.412.917.36.0
5 AM 17.212.213.716.07.7
6 AM 16.412.711.317.07.8
7 AM 17.913.511.517.19.0
8 AM 18.513.711.521.98.3
9 AM 17.515.410.416.57.0
10 AM 17.512.312.612.26.3
11 AM 8.810.39.712.23.0
12 Noon 6.56.47.27.64.0
1 PM 4.14.27.43.93.8
2 PM 4.44.97.65.14.0
3 PM 4.45.78.64.16.5
4 PM 5.75.310.35.57.8
5 PM 9.37.012.46.58.8
6 PM 23.310.413.410.811.2
7 PM 30.120.714.010.821.3
8 PM 15.021.011.412.120.7
9 PM 13.313.614.312.218.7
10 PM 12.717.210.712.415.9
11 PM 16.615.59.912.811.9
12 Midnight13.013.69.613.413.3

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