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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 1.7757 µg/m3 1.4378 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: 1.4378 µg/m3 on Thursday, April 28, 2016 8:00 PM White Rock PM 2.5: 1.436 µg/m3 on Thursday, April 28, 2016 7:30 PM White Rock PM 2.5: 1.4846 µg/m3 on Thursday, April 28, 2016 7:00 PM White Rock PM 2.5: 1.5528 µg/m3 on Thursday, April 28, 2016 6:30 PM White Rock PM 2.5: 1.5393 µg/m3 on Thursday, April 28, 2016 6:00 PM White Rock PM 2.5: 1.4901 µg/m3 on Thursday, April 28, 2016 5:30 PM White Rock PM 2.5: 1.4323 µg/m3 on Thursday, April 28, 2016 5:00 PM White Rock PM 2.5: 1.2561 µg/m3 on Thursday, April 28, 2016 4:30 PM White Rock PM 2.5: 1.2138 µg/m3 on Thursday, April 28, 2016 4:00 PM White Rock PM 2.5: 1.1855 µg/m3 on Thursday, April 28, 2016 3:30 PM White Rock PM 2.5: 1.1401 µg/m3 on Thursday, April 28, 2016 3:00 PM White Rock PM 2.5: 1.1489 µg/m3 on Thursday, April 28, 2016 2:30 PM White Rock PM 2.5: 1.1342 µg/m3 on Thursday, April 28, 2016 2:00 PM White Rock PM 2.5: 1.1397 µg/m3 on Thursday, April 28, 2016 1:30 PM White Rock PM 2.5: 1.1003 µg/m3 on Thursday, April 28, 2016 1:00 PM White Rock PM 2.5: 1.0597 µg/m3 on Thursday, April 28, 2016 12:30 PM White Rock PM 2.5: 1.0626 µg/m3 on Thursday, April 28, 2016 12:00 PM White Rock PM 2.5: 1.0703 µg/m3 on Thursday, April 28, 2016 11:30 AM White Rock PM 2.5: 1.0539 µg/m3 on Thursday, April 28, 2016 11:00 AM White Rock PM 2.5: 1.0512 µg/m3 on Thursday, April 28, 2016 10:30 AM White Rock PM 2.5: 1.0445 µg/m3 on Thursday, April 28, 2016 10:00 AM White Rock PM 2.5: 1.0381 µg/m3 on Thursday, April 28, 2016 9:30 AM White Rock PM 2.5: 1.0465 µg/m3 on Thursday, April 28, 2016 9:00 AM White Rock PM 2.5: 1.0148 µg/m3 on Thursday, April 28, 2016 8:30 AM White Rock PM 2.5: 1.0111 µg/m3 on Thursday, April 28, 2016 8:00 AM White Rock PM 2.5: 1.021 µg/m3 on Thursday, April 28, 2016 7:30 AM White Rock PM 2.5: 0.9666 µg/m3 on Thursday, April 28, 2016 7:00 AM White Rock PM 2.5: 0.8964 µg/m3 on Thursday, April 28, 2016 6:30 AM White Rock PM 2.5: 0.8532 µg/m3 on Thursday, April 28, 2016 6:00 AM White Rock PM 2.5: 0.8078 µg/m3 on Thursday, April 28, 2016 5:30 AM White Rock PM 2.5: 0.844 µg/m3 on Thursday, April 28, 2016 5:00 AM White Rock PM 2.5: 0.8679 µg/m3 on Thursday, April 28, 2016 4:30 AM White Rock PM 2.5: 0.8668 µg/m3 on Thursday, April 28, 2016 4:00 AM White Rock PM 2.5: 0.8528 µg/m3 on Thursday, April 28, 2016 3:30 AM White Rock PM 2.5: 0.8524 µg/m3 on Thursday, April 28, 2016 3:00 AM White Rock PM 2.5: 0.8848 µg/m3 on Thursday, April 28, 2016 2:30 AM White Rock PM 2.5: 0.8464 µg/m3 on Thursday, April 28, 2016 2:00 AM White Rock PM 2.5: 0.8867 µg/m3 on Thursday, April 28, 2016 1:30 AM White Rock PM 2.5: 0.777 µg/m3 on Thursday, April 28, 2016 1:00 AM White Rock PM 2.5: 0.7475 µg/m3 on Thursday, April 28, 2016 12:30 AM White Rock PM 2.5: 0.7793 µg/m3 on Thursday, April 28, 2016 12:00 AM White Rock PM 2.5: 0.7589 µg/m3 on Wednesday, April 27, 2016 11:30 PM White Rock PM 2.5: 0.7719 µg/m3 on Wednesday, April 27, 2016 11:00 PM White Rock PM 2.5: 0.7959 µg/m3 on Wednesday, April 27, 2016 10:30 PM White Rock PM 2.5: 0.8282 µg/m3 on Wednesday, April 27, 2016 10:00 PM White Rock PM 2.5: 0.875 µg/m3 on Wednesday, April 27, 2016 9:30 PM White Rock PM 2.5: 0.9049 µg/m3 on Wednesday, April 27, 2016 9:00 PM Los Alamos PM 2.5: 1.7757 µg/m3 on Thursday, April 28, 2016 8:30 PM Los Alamos PM 2.5: 1.7675 µg/m3 on Thursday, April 28, 2016 8:00 PM Los Alamos PM 2.5: 1.8516 µg/m3 on Thursday, April 28, 2016 7:30 PM Los Alamos PM 2.5: 1.7599 µg/m3 on Thursday, April 28, 2016 7:00 PM Los Alamos PM 2.5: 1.6905 µg/m3 on Thursday, April 28, 2016 6:30 PM Los Alamos PM 2.5: 1.7813 µg/m3 on Thursday, April 28, 2016 6:00 PM Los Alamos PM 2.5: 1.6881 µg/m3 on Thursday, April 28, 2016 5:30 PM Los Alamos PM 2.5: 1.5798 µg/m3 on Thursday, April 28, 2016 5:00 PM Los Alamos PM 2.5: 1.5338 µg/m3 on Thursday, April 28, 2016 4:30 PM Los Alamos PM 2.5: 1.5499 µg/m3 on Thursday, April 28, 2016 4:00 PM Los Alamos PM 2.5: 1.5901 µg/m3 on Thursday, April 28, 2016 3:30 PM Los Alamos PM 2.5: 1.4562 µg/m3 on Thursday, April 28, 2016 3:00 PM Los Alamos PM 2.5: 1.3166 µg/m3 on Thursday, April 28, 2016 2:30 PM Los Alamos PM 2.5: 1.3902 µg/m3 on Thursday, April 28, 2016 2:00 PM Los Alamos PM 2.5: 1.2433 µg/m3 on Thursday, April 28, 2016 1:30 PM Los Alamos PM 2.5: 1.2325 µg/m3 on Thursday, April 28, 2016 1:00 PM Los Alamos PM 2.5: 1.2894 µg/m3 on Thursday, April 28, 2016 12:30 PM Los Alamos PM 2.5: 1.2349 µg/m3 on Thursday, April 28, 2016 12:00 PM Los Alamos PM 2.5: 1.303 µg/m3 on Thursday, April 28, 2016 11:30 AM Los Alamos PM 2.5: 1.137 µg/m3 on Thursday, April 28, 2016 11:00 AM Los Alamos PM 2.5: 1.1735 µg/m3 on Thursday, April 28, 2016 10:30 AM Los Alamos PM 2.5: 1.1444 µg/m3 on Thursday, April 28, 2016 10:00 AM Los Alamos PM 2.5: 1.1567 µg/m3 on Thursday, April 28, 2016 9:30 AM Los Alamos PM 2.5: 1.2124 µg/m3 on Thursday, April 28, 2016 9:00 AM Los Alamos PM 2.5: 1.0611 µg/m3 on Thursday, April 28, 2016 8:30 AM Los Alamos PM 2.5: 1.1184 µg/m3 on Thursday, April 28, 2016 8:00 AM Los Alamos PM 2.5: 1.1134 µg/m3 on Thursday, April 28, 2016 7:30 AM Los Alamos PM 2.5: 1.177 µg/m3 on Thursday, April 28, 2016 7:00 AM Los Alamos PM 2.5: 1.1087 µg/m3 on Thursday, April 28, 2016 6:30 AM Los Alamos PM 2.5: 0.9989 µg/m3 on Thursday, April 28, 2016 6:00 AM Los Alamos PM 2.5: 0.9656 µg/m3 on Thursday, April 28, 2016 5:30 AM Los Alamos PM 2.5: 0.9313 µg/m3 on Thursday, April 28, 2016 5:00 AM Los Alamos PM 2.5: 0.947 µg/m3 on Thursday, April 28, 2016 4:30 AM Los Alamos PM 2.5: 0.9404 µg/m3 on Thursday, April 28, 2016 4:00 AM Los Alamos PM 2.5: 0.9023 µg/m3 on Thursday, April 28, 2016 3:30 AM Los Alamos PM 2.5: 0.9028 µg/m3 on Thursday, April 28, 2016 3:00 AM Los Alamos PM 2.5: 0.94 µg/m3 on Thursday, April 28, 2016 2:30 AM Los Alamos PM 2.5: 0.9703 µg/m3 on Thursday, April 28, 2016 2:00 AM Los Alamos PM 2.5: 1.0189 µg/m3 on Thursday, April 28, 2016 1:30 AM Los Alamos PM 2.5: 0.9182 µg/m3 on Thursday, April 28, 2016 1:00 AM Los Alamos PM 2.5: 0.8931 µg/m3 on Thursday, April 28, 2016 12:30 AM Los Alamos PM 2.5: 0.9313 µg/m3 on Thursday, April 28, 2016 12:00 AM Los Alamos PM 2.5: 0.883 µg/m3 on Wednesday, April 27, 2016 11:30 PM Los Alamos PM 2.5: 0.9558 µg/m3 on Wednesday, April 27, 2016 11:00 PM Los Alamos PM 2.5: 0.9114 µg/m3 on Wednesday, April 27, 2016 10:30 PM Los Alamos PM 2.5: 0.9501 µg/m3 on Wednesday, April 27, 2016 10:00 PM Los Alamos PM 2.5: 0.9764 µg/m3 on Wednesday, April 27, 2016 9:30 PM Los Alamos PM 2.5: 1.0548 µg/m3 on Wednesday, April 27, 2016 9:00 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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