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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 1.8991 µg/m3 1.8396 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: 1.8396 µg/m3 on Sunday, April 22, 2018 1:30 PM White Rock PM 2.5: 1.8539 µg/m3 on Sunday, April 22, 2018 1:00 PM White Rock PM 2.5: 1.7751 µg/m3 on Sunday, April 22, 2018 12:30 PM White Rock PM 2.5: 1.9062 µg/m3 on Sunday, April 22, 2018 12:00 PM White Rock PM 2.5: 1.8431 µg/m3 on Sunday, April 22, 2018 11:30 AM White Rock PM 2.5: 1.9701 µg/m3 on Sunday, April 22, 2018 11:00 AM White Rock PM 2.5: 1.9559 µg/m3 on Sunday, April 22, 2018 10:30 AM White Rock PM 2.5: 2.0434 µg/m3 on Sunday, April 22, 2018 10:00 AM White Rock PM 2.5: 2.1039 µg/m3 on Sunday, April 22, 2018 9:30 AM White Rock PM 2.5: 2.033 µg/m3 on Sunday, April 22, 2018 9:00 AM White Rock PM 2.5: 2.0624 µg/m3 on Sunday, April 22, 2018 8:30 AM White Rock PM 2.5: 2.0072 µg/m3 on Sunday, April 22, 2018 8:00 AM White Rock PM 2.5: 2.0521 µg/m3 on Sunday, April 22, 2018 7:30 AM White Rock PM 2.5: 2.1238 µg/m3 on Sunday, April 22, 2018 7:00 AM White Rock PM 2.5: 2.0529 µg/m3 on Sunday, April 22, 2018 6:30 AM White Rock PM 2.5: 2.0949 µg/m3 on Sunday, April 22, 2018 6:00 AM White Rock PM 2.5: 2.1079 µg/m3 on Sunday, April 22, 2018 5:30 AM White Rock PM 2.5: 2.112 µg/m3 on Sunday, April 22, 2018 5:00 AM White Rock PM 2.5: 2.0627 µg/m3 on Sunday, April 22, 2018 4:30 AM White Rock PM 2.5: 2.0523 µg/m3 on Sunday, April 22, 2018 4:00 AM White Rock PM 2.5: 2.058 µg/m3 on Sunday, April 22, 2018 3:30 AM White Rock PM 2.5: 1.9935 µg/m3 on Sunday, April 22, 2018 3:00 AM White Rock PM 2.5: 1.9073 µg/m3 on Sunday, April 22, 2018 2:30 AM White Rock PM 2.5: 1.9257 µg/m3 on Sunday, April 22, 2018 2:00 AM White Rock PM 2.5: 1.9004 µg/m3 on Sunday, April 22, 2018 1:30 AM White Rock PM 2.5: 1.8682 µg/m3 on Sunday, April 22, 2018 1:00 AM White Rock PM 2.5: 1.8483 µg/m3 on Sunday, April 22, 2018 12:30 AM White Rock PM 2.5: 1.8531 µg/m3 on Sunday, April 22, 2018 12:00 AM White Rock PM 2.5: 1.8208 µg/m3 on Saturday, April 21, 2018 11:30 PM White Rock PM 2.5: 1.8394 µg/m3 on Saturday, April 21, 2018 11:00 PM White Rock PM 2.5: 1.7853 µg/m3 on Saturday, April 21, 2018 10:30 PM White Rock PM 2.5: 1.7958 µg/m3 on Saturday, April 21, 2018 10:00 PM White Rock PM 2.5: 1.8789 µg/m3 on Saturday, April 21, 2018 9:30 PM White Rock PM 2.5: 1.8394 µg/m3 on Saturday, April 21, 2018 9:00 PM White Rock PM 2.5: 1.8888 µg/m3 on Saturday, April 21, 2018 8:30 PM White Rock PM 2.5: 1.965 µg/m3 on Saturday, April 21, 2018 8:00 PM White Rock PM 2.5: 2.042 µg/m3 on Saturday, April 21, 2018 7:30 PM White Rock PM 2.5: 2.0806 µg/m3 on Saturday, April 21, 2018 7:00 PM White Rock PM 2.5: 2.0735 µg/m3 on Saturday, April 21, 2018 6:30 PM White Rock PM 2.5: 2.1523 µg/m3 on Saturday, April 21, 2018 6:00 PM White Rock PM 2.5: 2.2133 µg/m3 on Saturday, April 21, 2018 5:30 PM White Rock PM 2.5: 2.2936 µg/m3 on Saturday, April 21, 2018 5:00 PM White Rock PM 2.5: 2.2689 µg/m3 on Saturday, April 21, 2018 4:30 PM White Rock PM 2.5: 2.3063 µg/m3 on Saturday, April 21, 2018 4:00 PM White Rock PM 2.5: 2.3102 µg/m3 on Saturday, April 21, 2018 3:30 PM White Rock PM 2.5: 2.3184 µg/m3 on Saturday, April 21, 2018 3:00 PM White Rock PM 2.5: 2.2853 µg/m3 on Saturday, April 21, 2018 2:30 PM White Rock PM 2.5: 2.2371 µg/m3 on Saturday, April 21, 2018 2:00 PM Los Alamos PM 2.5: 1.8991 µg/m3 on Sunday, April 22, 2018 1:30 PM Los Alamos PM 2.5: 1.9839 µg/m3 on Sunday, April 22, 2018 1:00 PM Los Alamos PM 2.5: 1.9659 µg/m3 on Sunday, April 22, 2018 12:30 PM Los Alamos PM 2.5: 1.9744 µg/m3 on Sunday, April 22, 2018 12:00 PM Los Alamos PM 2.5: 1.9609 µg/m3 on Sunday, April 22, 2018 11:30 AM Los Alamos PM 2.5: 1.9334 µg/m3 on Sunday, April 22, 2018 11:00 AM Los Alamos PM 2.5: 1.9601 µg/m3 on Sunday, April 22, 2018 10:30 AM Los Alamos PM 2.5: 2.0272 µg/m3 on Sunday, April 22, 2018 10:00 AM Los Alamos PM 2.5: 2.0277 µg/m3 on Sunday, April 22, 2018 9:30 AM Los Alamos PM 2.5: 2.0819 µg/m3 on Sunday, April 22, 2018 9:00 AM Los Alamos PM 2.5: 2.1205 µg/m3 on Sunday, April 22, 2018 8:30 AM Los Alamos PM 2.5: 2.0321 µg/m3 on Sunday, April 22, 2018 8:00 AM Los Alamos PM 2.5: 2.1069 µg/m3 on Sunday, April 22, 2018 7:30 AM Los Alamos PM 2.5: 2.1027 µg/m3 on Sunday, April 22, 2018 7:00 AM Los Alamos PM 2.5: 2.1936 µg/m3 on Sunday, April 22, 2018 6:30 AM Los Alamos PM 2.5: 2.202 µg/m3 on Sunday, April 22, 2018 6:00 AM Los Alamos PM 2.5: 2.1696 µg/m3 on Sunday, April 22, 2018 5:30 AM Los Alamos PM 2.5: 2.2432 µg/m3 on Sunday, April 22, 2018 5:00 AM Los Alamos PM 2.5: 2.2208 µg/m3 on Sunday, April 22, 2018 4:30 AM Los Alamos PM 2.5: 2.17 µg/m3 on Sunday, April 22, 2018 4:00 AM Los Alamos PM 2.5: 2.1255 µg/m3 on Sunday, April 22, 2018 3:30 AM Los Alamos PM 2.5: 2.107 µg/m3 on Sunday, April 22, 2018 3:00 AM Los Alamos PM 2.5: 2.0547 µg/m3 on Sunday, April 22, 2018 2:30 AM Los Alamos PM 2.5: 2.0352 µg/m3 on Sunday, April 22, 2018 2:00 AM Los Alamos PM 2.5: 2.0292 µg/m3 on Sunday, April 22, 2018 1:30 AM Los Alamos PM 2.5: 2.0111 µg/m3 on Sunday, April 22, 2018 1:00 AM Los Alamos PM 2.5: 1.9705 µg/m3 on Sunday, April 22, 2018 12:30 AM Los Alamos PM 2.5: 2.0085 µg/m3 on Sunday, April 22, 2018 12:00 AM Los Alamos PM 2.5: 1.9855 µg/m3 on Saturday, April 21, 2018 11:30 PM Los Alamos PM 2.5: 1.9446 µg/m3 on Saturday, April 21, 2018 11:00 PM Los Alamos PM 2.5: 1.9299 µg/m3 on Saturday, April 21, 2018 10:30 PM Los Alamos PM 2.5: 1.9944 µg/m3 on Saturday, April 21, 2018 10:00 PM Los Alamos PM 2.5: 2.0209 µg/m3 on Saturday, April 21, 2018 9:30 PM Los Alamos PM 2.5: 2.0838 µg/m3 on Saturday, April 21, 2018 9:00 PM Los Alamos PM 2.5: 2.2149 µg/m3 on Saturday, April 21, 2018 8:30 PM Los Alamos PM 2.5: 2.2138 µg/m3 on Saturday, April 21, 2018 8:00 PM Los Alamos PM 2.5: 2.2422 µg/m3 on Saturday, April 21, 2018 7:30 PM Los Alamos PM 2.5: 2.3738 µg/m3 on Saturday, April 21, 2018 7:00 PM Los Alamos PM 2.5: 2.3085 µg/m3 on Saturday, April 21, 2018 6:30 PM Los Alamos PM 2.5: 2.4475 µg/m3 on Saturday, April 21, 2018 6:00 PM Los Alamos PM 2.5: 2.4629 µg/m3 on Saturday, April 21, 2018 5:30 PM Los Alamos PM 2.5: 2.5002 µg/m3 on Saturday, April 21, 2018 5:00 PM Los Alamos PM 2.5: 2.4772 µg/m3 on Saturday, April 21, 2018 4:30 PM Los Alamos PM 2.5: 2.5725 µg/m3 on Saturday, April 21, 2018 4:00 PM Los Alamos PM 2.5: 2.4966 µg/m3 on Saturday, April 21, 2018 3:30 PM Los Alamos PM 2.5: 2.626 µg/m3 on Saturday, April 21, 2018 3:00 PM Los Alamos PM 2.5: 2.5271 µg/m3 on Saturday, April 21, 2018 2:30 PM Los Alamos PM 2.5: 2.4328 µg/m3 on Saturday, April 21, 2018 2:00 PM
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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