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 01/18/2019 , at 4:15 PM CST )

Time
(CST)
Little Rock,
Doyle Springs
Road
El DoradoMarion N Little Rock,
Pike Ave &
River Rd
Springdale
1 AM 5.23.66.73.87.2
2 AM 6.33.03.65.08.2
3 AM 4.86.94.54.26.3
4 AM 6.66.64.55.68.0
5 AM 4.95.55.75.16.6
6 AM 5.94.76.15.88.8
7 AM 6.84.07.96.39.9
8 AM 6.85.47.86.011.1
9 AM 5.08.27.74.614.7
10 AM 4.08.89.615.411.5
11 AM 1.410.310.16.915.3
12 Noon 4.017.84.74.813.2
1 PM 2.614.34.64.012.3
2 PM 6.56.35.76.59.5
3 PM 7.5-999.07.06.511.9
4 PM 6.4-999.07.3-999.0-999.0

Yesterday's Data

( 01/17/2019 )

Time
(CST)
Little Rock,
Doyle Springs
Road
El DoradoMarion N Little Rock,
Pike Ave &
River Rd
Springdale
1 AM 8.813.58.38.05.6
2 AM 11.112.16.010.05.4
3 AM 10.112.64.69.44.3
4 AM 8.113.37.38.03.9
5 AM 8.612.35.47.94.1
6 AM 8.112.86.77.84.6
7 AM 8.913.87.67.96.0
8 AM 9.413.811.88.35.1
9 AM 9.715.611.08.96.4
10 AM 11.114.612.49.27.9
11 AM 10.914.213.58.48.3
12 Noon 8.411.113.97.97.0
1 PM 8.56.613.76.415.2
2 PM 9.2-1.614.07.47.4
3 PM 9.81.115.68.88.9
4 PM 9.311.315.28.313.4
5 PM 6.89.414.34.810.1
6 PM 6.09.116.85.010.1
7 PM 4.115.511.31.59.3
8 PM 4.510.55.13.77.5
9 PM 4.512.67.24.17.2
10 PM 6.117.05.95.39.2
11 PM 4.89.94.64.013.6
12 Midnight5.65.65.35.38.3

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