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Monitoring Total Particulate Matter

We measure the total particulate mass concentration in the air on a routine basis as well as during incidents that may affect ambient air.

Air Quality Index - AQI

Employee Smoke Alert Los Alamos PM 2.5
24-hour Rolling Average
White Rock PM 2.5
24-hour Rolling Average
The current condition is: Good 1.6349 µg/m3 1.8819 µg/m3
Weather Forecast View Los Alamos data View White Rock data

AQI is an index for reporting daily air quality. It tells you how clean or polluted your air is, and what associated health effects might be a concern for you. The AQI focuses on health effects you may experience within a few hours or days after breathing polluted air. EPA calculates the AQI for five major air pollutants regulated by the Clean Air Act.

White Rock PM 2.5: 1.8819 µg/m3 on Thursday, February 22, 2018 5:00 AM White Rock PM 2.5: 1.884 µg/m3 on Thursday, February 22, 2018 4:30 AM White Rock PM 2.5: 1.9376 µg/m3 on Thursday, February 22, 2018 4:00 AM White Rock PM 2.5: 1.9253 µg/m3 on Thursday, February 22, 2018 3:30 AM White Rock PM 2.5: 1.9743 µg/m3 on Thursday, February 22, 2018 3:00 AM White Rock PM 2.5: 2.0199 µg/m3 on Thursday, February 22, 2018 2:30 AM White Rock PM 2.5: 2.0877 µg/m3 on Thursday, February 22, 2018 2:00 AM White Rock PM 2.5: 2.1117 µg/m3 on Thursday, February 22, 2018 1:30 AM White Rock PM 2.5: 2.1339 µg/m3 on Thursday, February 22, 2018 1:00 AM White Rock PM 2.5: 2.1852 µg/m3 on Thursday, February 22, 2018 12:30 AM White Rock PM 2.5: 2.2109 µg/m3 on Thursday, February 22, 2018 12:00 AM White Rock PM 2.5: 2.2517 µg/m3 on Wednesday, February 21, 2018 11:30 PM White Rock PM 2.5: 2.3038 µg/m3 on Wednesday, February 21, 2018 11:00 PM White Rock PM 2.5: 2.3223 µg/m3 on Wednesday, February 21, 2018 10:30 PM White Rock PM 2.5: 2.3221 µg/m3 on Wednesday, February 21, 2018 10:00 PM White Rock PM 2.5: 2.3554 µg/m3 on Wednesday, February 21, 2018 9:30 PM White Rock PM 2.5: 2.3671 µg/m3 on Wednesday, February 21, 2018 9:00 PM White Rock PM 2.5: 2.384 µg/m3 on Wednesday, February 21, 2018 8:30 PM White Rock PM 2.5: 2.4023 µg/m3 on Wednesday, February 21, 2018 8:00 PM White Rock PM 2.5: 2.4456 µg/m3 on Wednesday, February 21, 2018 7:30 PM White Rock PM 2.5: 2.4471 µg/m3 on Wednesday, February 21, 2018 7:00 PM White Rock PM 2.5: 2.4344 µg/m3 on Wednesday, February 21, 2018 6:30 PM White Rock PM 2.5: 2.4334 µg/m3 on Wednesday, February 21, 2018 6:00 PM White Rock PM 2.5: 2.4662 µg/m3 on Wednesday, February 21, 2018 5:30 PM White Rock PM 2.5: 2.4703 µg/m3 on Wednesday, February 21, 2018 5:00 PM White Rock PM 2.5: 2.4844 µg/m3 on Wednesday, February 21, 2018 4:30 PM White Rock PM 2.5: 2.5303 µg/m3 on Wednesday, February 21, 2018 4:00 PM White Rock PM 2.5: 2.5294 µg/m3 on Wednesday, February 21, 2018 3:30 PM White Rock PM 2.5: 2.5483 µg/m3 on Wednesday, February 21, 2018 3:00 PM White Rock PM 2.5: 2.5621 µg/m3 on Wednesday, February 21, 2018 2:30 PM White Rock PM 2.5: 2.5883 µg/m3 on Wednesday, February 21, 2018 2:00 PM White Rock PM 2.5: 2.6157 µg/m3 on Wednesday, February 21, 2018 1:30 PM White Rock PM 2.5: 2.6499 µg/m3 on Wednesday, February 21, 2018 1:00 PM White Rock PM 2.5: 2.6861 µg/m3 on Wednesday, February 21, 2018 12:30 PM White Rock PM 2.5: 2.7041 µg/m3 on Wednesday, February 21, 2018 12:00 PM White Rock PM 2.5: 2.7293 µg/m3 on Wednesday, February 21, 2018 11:30 AM White Rock PM 2.5: 2.7132 µg/m3 on Wednesday, February 21, 2018 11:00 AM White Rock PM 2.5: 2.6562 µg/m3 on Wednesday, February 21, 2018 10:30 AM White Rock PM 2.5: 2.6211 µg/m3 on Wednesday, February 21, 2018 10:00 AM White Rock PM 2.5: 2.6007 µg/m3 on Wednesday, February 21, 2018 9:30 AM White Rock PM 2.5: 2.6118 µg/m3 on Wednesday, February 21, 2018 9:00 AM White Rock PM 2.5: 2.5942 µg/m3 on Wednesday, February 21, 2018 8:30 AM White Rock PM 2.5: 2.6007 µg/m3 on Wednesday, February 21, 2018 8:00 AM White Rock PM 2.5: 2.5873 µg/m3 on Wednesday, February 21, 2018 7:30 AM White Rock PM 2.5: 2.6009 µg/m3 on Wednesday, February 21, 2018 7:00 AM White Rock PM 2.5: 2.6051 µg/m3 on Wednesday, February 21, 2018 6:30 AM White Rock PM 2.5: 2.5543 µg/m3 on Wednesday, February 21, 2018 6:00 AM White Rock PM 2.5: 2.4791 µg/m3 on Wednesday, February 21, 2018 5:30 AM Los Alamos PM 2.5: 1.6843 µg/m3 on Thursday, February 22, 2018 5:00 AM Los Alamos PM 2.5: 1.6676 µg/m3 on Thursday, February 22, 2018 4:30 AM Los Alamos PM 2.5: 1.6767 µg/m3 on Thursday, February 22, 2018 4:00 AM Los Alamos PM 2.5: 1.6256 µg/m3 on Thursday, February 22, 2018 3:30 AM Los Alamos PM 2.5: 1.7106 µg/m3 on Thursday, February 22, 2018 3:00 AM Los Alamos PM 2.5: 1.7131 µg/m3 on Thursday, February 22, 2018 2:30 AM Los Alamos PM 2.5: 1.7245 µg/m3 on Thursday, February 22, 2018 2:00 AM Los Alamos PM 2.5: 1.7337 µg/m3 on Thursday, February 22, 2018 1:30 AM Los Alamos PM 2.5: 1.7662 µg/m3 on Thursday, February 22, 2018 1:00 AM Los Alamos PM 2.5: 1.8475 µg/m3 on Thursday, February 22, 2018 12:30 AM Los Alamos PM 2.5: 1.8931 µg/m3 on Thursday, February 22, 2018 12:00 AM Los Alamos PM 2.5: 1.972 µg/m3 on Wednesday, February 21, 2018 11:30 PM Los Alamos PM 2.5: 2.0476 µg/m3 on Wednesday, February 21, 2018 11:00 PM Los Alamos PM 2.5: 2.085 µg/m3 on Wednesday, February 21, 2018 10:30 PM Los Alamos PM 2.5: 2.1266 µg/m3 on Wednesday, February 21, 2018 10:00 PM Los Alamos PM 2.5: 2.1833 µg/m3 on Wednesday, February 21, 2018 9:30 PM Los Alamos PM 2.5: 2.205 µg/m3 on Wednesday, February 21, 2018 9:00 PM Los Alamos PM 2.5: 2.2234 µg/m3 on Wednesday, February 21, 2018 8:30 PM Los Alamos PM 2.5: 2.2543 µg/m3 on Wednesday, February 21, 2018 8:00 PM Los Alamos PM 2.5: 2.2431 µg/m3 on Wednesday, February 21, 2018 7:30 PM Los Alamos PM 2.5: 2.2778 µg/m3 on Wednesday, February 21, 2018 7:00 PM Los Alamos PM 2.5: 2.2705 µg/m3 on Wednesday, February 21, 2018 6:30 PM Los Alamos PM 2.5: 2.235 µg/m3 on Wednesday, February 21, 2018 6:00 PM Los Alamos PM 2.5: 2.2625 µg/m3 on Wednesday, February 21, 2018 5:30 PM Los Alamos PM 2.5: 2.4015 µg/m3 on Wednesday, February 21, 2018 5:00 PM Los Alamos PM 2.5: 2.3755 µg/m3 on Wednesday, February 21, 2018 4:30 PM Los Alamos PM 2.5: 2.3999 µg/m3 on Wednesday, February 21, 2018 4:00 PM Los Alamos PM 2.5: 2.4126 µg/m3 on Wednesday, February 21, 2018 3:30 PM Los Alamos PM 2.5: 2.4406 µg/m3 on Wednesday, February 21, 2018 3:00 PM Los Alamos PM 2.5: 2.382 µg/m3 on Wednesday, February 21, 2018 2:30 PM Los Alamos PM 2.5: 2.4783 µg/m3 on Wednesday, February 21, 2018 2:00 PM Los Alamos PM 2.5: 2.5237 µg/m3 on Wednesday, February 21, 2018 1:30 PM Los Alamos PM 2.5: 2.4731 µg/m3 on Wednesday, February 21, 2018 1:00 PM Los Alamos PM 2.5: 2.4914 µg/m3 on Wednesday, February 21, 2018 12:30 PM Los Alamos PM 2.5: 2.5207 µg/m3 on Wednesday, February 21, 2018 12:00 PM Los Alamos PM 2.5: 2.6095 µg/m3 on Wednesday, February 21, 2018 11:30 AM Los Alamos PM 2.5: 2.5555 µg/m3 on Wednesday, February 21, 2018 11:00 AM Los Alamos PM 2.5: 2.4586 µg/m3 on Wednesday, February 21, 2018 10:30 AM Los Alamos PM 2.5: 2.4593 µg/m3 on Wednesday, February 21, 2018 10:00 AM Los Alamos PM 2.5: 2.5624 µg/m3 on Wednesday, February 21, 2018 9:30 AM Los Alamos PM 2.5: 2.601 µg/m3 on Wednesday, February 21, 2018 9:00 AM Los Alamos PM 2.5: 2.6292 µg/m3 on Wednesday, February 21, 2018 8:30 AM Los Alamos PM 2.5: 2.6055 µg/m3 on Wednesday, February 21, 2018 8:00 AM Los Alamos PM 2.5: 2.6764 µg/m3 on Wednesday, February 21, 2018 7:30 AM Los Alamos PM 2.5: 2.6953 µg/m3 on Wednesday, February 21, 2018 7:00 AM Los Alamos PM 2.5: 2.7198 µg/m3 on Wednesday, February 21, 2018 6:30 AM
Air Quality and Work Activity Guidance

The air quality guidance below is published by the New Mexico Environmental Department. Work activity guidance has also been added by LANL's ADESH Directorate.

  • Indoor PM 2.5 equivalent particulate levels are normally 70-80% of outdoor levels unless HEPA filtered.
  • Health Levels are based on total PM 2.5.
  • All health related impacts are generalized and an individual's response to smoke may vary.
  • Managers and employees are encouraged to work together to assess any localized health risks that may result from exposure to ambient smoke and employee work activities, particularly with employees with preexisting health conditions as discussed in the chart below.
Condition Concentration PM 2.5 (µg/m3
24-hour average)
Air Quality Index Cautionary Statements Recommendations for Outdoor Work Activities
Good 0-15 0-50 None. None.
Moderate 16-35 51-100 Unusually sensitive people should consider reducing prolonged or heavy exertion. None.
Unhealthy for Sensitive Groups 36-65 101-150 Sensitive groups or individuals with preexisting conditions with heart or lung disease ( i.e. asthma), older adults, and children should reduce prolonged or heavy exertion. Sensitive individuals or individuals with preexisting health conditions aggravated by smoke are responsible for determining and moderating outdoor work effort/activity level.
Unhealthy 66-150 151-200 People with heart or lung disease, older adults, and children should avoid prolonged or heavy exertion.

Everyone else should reduce prolonged or heavy exertion.
Restrict outdoor work activities to light activity: i.e. light manual work with hands or arms, occasional walking.

Restrict Indoor and outdoor exercise and activity (Wellness Center closure).
Wildfire Guidance

To address potential work time exposures to ambient particulate (smoke) generated from wild fires, the following guidance is offered:

  • Particulate from forest fires tend to be very small (0.4-0.7micrometers) and can add to or exacerbate many health conditions.
  • LANL currently measures ambient particulate levels in the Los Alamos town site at Los Alamos Medical Center and in White Rock using PM 2.5 micron, monitoring methods.
  • These monitoring results include contributions from smoke related particulate matter.
  • Rolling 24-hour PM 2.5 averages are updated every 30 minutes.
Learn more about Particulate Matter Sampling

LANL monitors the composition of particulate matter and volatile organic compounds in the ambient atmosphere in Los Alamos County and to provide better background data for these types of constituents for use in the event of an emergency. Data are downloaded from Tapered Element Oscillating Microbalance (TEOM) samplers every hour. In order to provide the most current data possible, the data have not been fully validated and verified. Two TEOM samplers are present at each sampling site:

  • PM 2.5
    • Used for measuring particulate matter less than 2.5 micrometers in diameter.
    • PM 2.5 measurements represent fine particles that are inhaled deeply into the lung. Sources of these fine particles include internal combustion engines, forest fires, power plants, and atmospheric processes such as condensation and smog formation.
  • PM 10
    • Used for measuring particulate matter less than 10 micrometers in diameter.
    • PM 10 measurements include the PM 2.5 particles and larger particles such as those produced from “mechanical” disturbances such as unpaved roads, construction activities, material handling, and wind storms.
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