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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 2.4073 µg/m3 2.3416 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: 2.1796 µg/m3 on Wednesday, May 25, 2016 2:30 PM White Rock PM 2.5: 2.1347 µg/m3 on Wednesday, May 25, 2016 2:00 PM White Rock PM 2.5: 2.1423 µg/m3 on Wednesday, May 25, 2016 1:30 PM White Rock PM 2.5: 1.9854 µg/m3 on Wednesday, May 25, 2016 1:00 PM White Rock PM 2.5: 2.037 µg/m3 on Wednesday, May 25, 2016 12:30 PM White Rock PM 2.5: 2.0506 µg/m3 on Wednesday, May 25, 2016 12:00 PM White Rock PM 2.5: 1.9971 µg/m3 on Wednesday, May 25, 2016 11:30 AM White Rock PM 2.5: 1.9873 µg/m3 on Wednesday, May 25, 2016 11:00 AM White Rock PM 2.5: 1.89 µg/m3 on Wednesday, May 25, 2016 10:30 AM White Rock PM 2.5: 1.8995 µg/m3 on Wednesday, May 25, 2016 10:00 AM White Rock PM 2.5: 1.8445 µg/m3 on Wednesday, May 25, 2016 9:30 AM White Rock PM 2.5: 1.65 µg/m3 on Wednesday, May 25, 2016 9:00 AM White Rock PM 2.5: 1.6972 µg/m3 on Wednesday, May 25, 2016 8:30 AM White Rock PM 2.5: 1.5983 µg/m3 on Wednesday, May 25, 2016 8:00 AM White Rock PM 2.5: 1.606 µg/m3 on Wednesday, May 25, 2016 7:30 AM White Rock PM 2.5: 1.5936 µg/m3 on Wednesday, May 25, 2016 7:00 AM White Rock PM 2.5: 1.6189 µg/m3 on Wednesday, May 25, 2016 6:30 AM White Rock PM 2.5: 1.6117 µg/m3 on Wednesday, May 25, 2016 6:00 AM White Rock PM 2.5: 1.6079 µg/m3 on Wednesday, May 25, 2016 5:30 AM White Rock PM 2.5: 1.551 µg/m3 on Wednesday, May 25, 2016 3:00 AM White Rock PM 2.5: 1.5401 µg/m3 on Wednesday, May 25, 2016 2:30 AM White Rock PM 2.5: 1.5176 µg/m3 on Wednesday, May 25, 2016 2:00 AM White Rock PM 2.5: 1.4555 µg/m3 on Wednesday, May 25, 2016 1:30 AM White Rock PM 2.5: 1.3653 µg/m3 on Wednesday, May 25, 2016 1:00 AM White Rock PM 2.5: 1.3776 µg/m3 on Wednesday, May 25, 2016 12:30 AM White Rock PM 2.5: 1.3654 µg/m3 on Wednesday, May 25, 2016 12:00 AM White Rock PM 2.5: 1.2885 µg/m3 on Tuesday, May 24, 2016 11:30 PM White Rock PM 2.5: 1.3383 µg/m3 on Tuesday, May 24, 2016 11:00 PM White Rock PM 2.5: 1.3897 µg/m3 on Tuesday, May 24, 2016 10:30 PM White Rock PM 2.5: 1.3827 µg/m3 on Tuesday, May 24, 2016 10:00 PM White Rock PM 2.5: 1.3526 µg/m3 on Tuesday, May 24, 2016 9:30 PM White Rock PM 2.5: 1.4299 µg/m3 on Tuesday, May 24, 2016 9:00 PM White Rock PM 2.5: 1.3474 µg/m3 on Tuesday, May 24, 2016 8:30 PM White Rock PM 2.5: 1.3941 µg/m3 on Tuesday, May 24, 2016 8:00 PM White Rock PM 2.5: 1.4177 µg/m3 on Tuesday, May 24, 2016 7:30 PM White Rock PM 2.5: 1.3991 µg/m3 on Tuesday, May 24, 2016 7:00 PM White Rock PM 2.5: 1.4132 µg/m3 on Tuesday, May 24, 2016 6:30 PM White Rock PM 2.5: 1.398 µg/m3 on Tuesday, May 24, 2016 6:00 PM White Rock PM 2.5: 1.4118 µg/m3 on Tuesday, May 24, 2016 5:30 PM White Rock PM 2.5: 1.424 µg/m3 on Tuesday, May 24, 2016 5:00 PM White Rock PM 2.5: 1.4236 µg/m3 on Tuesday, May 24, 2016 4:30 PM White Rock PM 2.5: 1.3875 µg/m3 on Tuesday, May 24, 2016 4:00 PM White Rock PM 2.5: 1.4084 µg/m3 on Tuesday, May 24, 2016 3:30 PM White Rock PM 2.5: 1.4076 µg/m3 on Tuesday, May 24, 2016 3:00 PM Los Alamos PM 2.5: 2.4073 µg/m3 on Wednesday, May 25, 2016 2:30 PM Los Alamos PM 2.5: 2.3288 µg/m3 on Wednesday, May 25, 2016 2:00 PM Los Alamos PM 2.5: 2.3589 µg/m3 on Wednesday, May 25, 2016 1:30 PM Los Alamos PM 2.5: 2.2712 µg/m3 on Wednesday, May 25, 2016 1:00 PM Los Alamos PM 2.5: 2.211 µg/m3 on Wednesday, May 25, 2016 12:30 PM Los Alamos PM 2.5: 2.2304 µg/m3 on Wednesday, May 25, 2016 12:00 PM Los Alamos PM 2.5: 2.1748 µg/m3 on Wednesday, May 25, 2016 11:30 AM Los Alamos PM 2.5: 2.0252 µg/m3 on Wednesday, May 25, 2016 11:00 AM Los Alamos PM 2.5: 1.9821 µg/m3 on Wednesday, May 25, 2016 10:30 AM Los Alamos PM 2.5: 2.0361 µg/m3 on Wednesday, May 25, 2016 10:00 AM Los Alamos PM 2.5: 2.1852 µg/m3 on Wednesday, May 25, 2016 9:30 AM Los Alamos PM 2.5: 2.037 µg/m3 on Wednesday, May 25, 2016 9:00 AM Los Alamos PM 2.5: 2.0644 µg/m3 on Wednesday, May 25, 2016 8:30 AM Los Alamos PM 2.5: 2.0603 µg/m3 on Wednesday, May 25, 2016 8:00 AM Los Alamos PM 2.5: 2.1611 µg/m3 on Wednesday, May 25, 2016 7:30 AM Los Alamos PM 2.5: 2.0311 µg/m3 on Wednesday, May 25, 2016 7:00 AM Los Alamos PM 2.5: 2.0492 µg/m3 on Wednesday, May 25, 2016 6:30 AM Los Alamos PM 2.5: 2.0557 µg/m3 on Wednesday, May 25, 2016 6:00 AM Los Alamos PM 2.5: 1.9645 µg/m3 on Wednesday, May 25, 2016 5:30 AM Los Alamos PM 2.5: 2.1488 µg/m3 on Wednesday, May 25, 2016 5:00 AM Los Alamos PM 2.5: 1.5087 µg/m3 on Wednesday, May 25, 2016 4:30 AM Los Alamos PM 2.5: 1.7098 µg/m3 on Wednesday, May 25, 2016 4:00 AM Los Alamos PM 2.5: 1.6637 µg/m3 on Wednesday, May 25, 2016 3:30 AM Los Alamos PM 2.5: 1.6936 µg/m3 on Wednesday, May 25, 2016 3:00 AM Los Alamos PM 2.5: 1.6547 µg/m3 on Wednesday, May 25, 2016 2:30 AM Los Alamos PM 2.5: 1.4009 µg/m3 on Wednesday, May 25, 2016 2:00 AM Los Alamos PM 2.5: 1.4955 µg/m3 on Wednesday, May 25, 2016 1:30 AM Los Alamos PM 2.5: 1.5098 µg/m3 on Wednesday, May 25, 2016 1:00 AM Los Alamos PM 2.5: 1.533 µg/m3 on Wednesday, May 25, 2016 12:30 AM Los Alamos PM 2.5: 1.4971 µg/m3 on Wednesday, May 25, 2016 12:00 AM Los Alamos PM 2.5: 1.2743 µg/m3 on Tuesday, May 24, 2016 11:30 PM Los Alamos PM 2.5: 1.3358 µg/m3 on Tuesday, May 24, 2016 11:00 PM Los Alamos PM 2.5: 1.4276 µg/m3 on Tuesday, May 24, 2016 10:30 PM Los Alamos PM 2.5: 1.3137 µg/m3 on Tuesday, May 24, 2016 10:00 PM Los Alamos PM 2.5: 1.379 µg/m3 on Tuesday, May 24, 2016 9:30 PM Los Alamos PM 2.5: 1.1482 µg/m3 on Tuesday, May 24, 2016 9:00 PM Los Alamos PM 2.5: 1.4323 µg/m3 on Tuesday, May 24, 2016 8:30 PM Los Alamos PM 2.5: 1.4421 µg/m3 on Tuesday, May 24, 2016 8:00 PM Los Alamos PM 2.5: 1.3395 µg/m3 on Tuesday, May 24, 2016 7:30 PM Los Alamos PM 2.5: 1.2393 µg/m3 on Tuesday, May 24, 2016 7:00 PM Los Alamos PM 2.5: 1.3652 µg/m3 on Tuesday, May 24, 2016 6:30 PM Los Alamos PM 2.5: 1.1348 µg/m3 on Tuesday, May 24, 2016 6:00 PM Los Alamos PM 2.5: 1.3753 µg/m3 on Tuesday, May 24, 2016 5:30 PM Los Alamos PM 2.5: 1.1461 µg/m3 on Tuesday, May 24, 2016 5:00 PM Los Alamos PM 2.5: 1.3241 µg/m3 on Tuesday, May 24, 2016 4:30 PM Los Alamos PM 2.5: 1.3262 µg/m3 on Tuesday, May 24, 2016 4:00 PM Los Alamos PM 2.5: 1.3547 µg/m3 on Tuesday, May 24, 2016 3:30 PM Los Alamos PM 2.5: 1.3883 µg/m3 on Tuesday, May 24, 2016 3:00 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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