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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 4.8925 µg/m3 4.5396 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: 4.5396 µg/m3 on Tuesday, March 26, 2019 6:00 PM White Rock PM 2.5: 4.6266 µg/m3 on Tuesday, March 26, 2019 5:30 PM White Rock PM 2.5: 4.6149 µg/m3 on Tuesday, March 26, 2019 5:00 PM White Rock PM 2.5: 4.7221 µg/m3 on Tuesday, March 26, 2019 4:30 PM White Rock PM 2.5: 4.6648 µg/m3 on Tuesday, March 26, 2019 4:00 PM White Rock PM 2.5: 4.7617 µg/m3 on Tuesday, March 26, 2019 3:30 PM White Rock PM 2.5: 4.7132 µg/m3 on Tuesday, March 26, 2019 3:00 PM White Rock PM 2.5: 4.8135 µg/m3 on Tuesday, March 26, 2019 2:30 PM White Rock PM 2.5: 4.7589 µg/m3 on Tuesday, March 26, 2019 2:00 PM White Rock PM 2.5: 4.8477 µg/m3 on Tuesday, March 26, 2019 1:30 PM White Rock PM 2.5: 4.7811 µg/m3 on Tuesday, March 26, 2019 1:00 PM White Rock PM 2.5: 4.835 µg/m3 on Tuesday, March 26, 2019 12:30 PM White Rock PM 2.5: 4.7691 µg/m3 on Tuesday, March 26, 2019 12:00 PM White Rock PM 2.5: 4.7358 µg/m3 on Tuesday, March 26, 2019 11:30 AM White Rock PM 2.5: 4.7082 µg/m3 on Tuesday, March 26, 2019 11:00 AM White Rock PM 2.5: 4.7166 µg/m3 on Tuesday, March 26, 2019 10:30 AM White Rock PM 2.5: 4.6538 µg/m3 on Tuesday, March 26, 2019 10:00 AM White Rock PM 2.5: 4.6406 µg/m3 on Tuesday, March 26, 2019 9:30 AM White Rock PM 2.5: 4.684 µg/m3 on Tuesday, March 26, 2019 9:00 AM White Rock PM 2.5: 4.5493 µg/m3 on Tuesday, March 26, 2019 8:30 AM White Rock PM 2.5: 4.863 µg/m3 on Tuesday, March 26, 2019 8:00 AM White Rock PM 2.5: 4.6396 µg/m3 on Tuesday, March 26, 2019 7:30 AM White Rock PM 2.5: 4.6231 µg/m3 on Tuesday, March 26, 2019 7:00 AM White Rock PM 2.5: 4.5073 µg/m3 on Tuesday, March 26, 2019 6:30 AM White Rock PM 2.5: 4.4909 µg/m3 on Tuesday, March 26, 2019 6:00 AM White Rock PM 2.5: 4.4391 µg/m3 on Tuesday, March 26, 2019 5:30 AM White Rock PM 2.5: 4.4007 µg/m3 on Tuesday, March 26, 2019 5:00 AM White Rock PM 2.5: 4.3397 µg/m3 on Tuesday, March 26, 2019 4:30 AM White Rock PM 2.5: 4.3396 µg/m3 on Tuesday, March 26, 2019 4:00 AM White Rock PM 2.5: 4.2697 µg/m3 on Tuesday, March 26, 2019 3:30 AM White Rock PM 2.5: 4.1873 µg/m3 on Tuesday, March 26, 2019 3:00 AM White Rock PM 2.5: 4.2103 µg/m3 on Tuesday, March 26, 2019 2:30 AM White Rock PM 2.5: 4.1124 µg/m3 on Tuesday, March 26, 2019 2:00 AM White Rock PM 2.5: 4.0993 µg/m3 on Tuesday, March 26, 2019 1:30 AM White Rock PM 2.5: 4.0726 µg/m3 on Tuesday, March 26, 2019 1:00 AM White Rock PM 2.5: 4.041 µg/m3 on Tuesday, March 26, 2019 12:30 AM White Rock PM 2.5: 4.0012 µg/m3 on Tuesday, March 26, 2019 12:00 AM White Rock PM 2.5: 3.9269 µg/m3 on Monday, March 25, 2019 11:30 PM White Rock PM 2.5: 3.8815 µg/m3 on Monday, March 25, 2019 11:00 PM White Rock PM 2.5: 3.8613 µg/m3 on Monday, March 25, 2019 10:30 PM White Rock PM 2.5: 3.8215 µg/m3 on Monday, March 25, 2019 10:00 PM White Rock PM 2.5: 3.7164 µg/m3 on Monday, March 25, 2019 9:30 PM White Rock PM 2.5: 3.7929 µg/m3 on Monday, March 25, 2019 9:00 PM White Rock PM 2.5: 3.715 µg/m3 on Monday, March 25, 2019 8:30 PM White Rock PM 2.5: 3.6296 µg/m3 on Monday, March 25, 2019 8:00 PM White Rock PM 2.5: 3.611 µg/m3 on Monday, March 25, 2019 7:30 PM White Rock PM 2.5: 3.5752 µg/m3 on Monday, March 25, 2019 7:00 PM White Rock PM 2.5: 3.5176 µg/m3 on Monday, March 25, 2019 6:30 PM Los Alamos PM 2.5: 4.8925 µg/m3 on Tuesday, March 26, 2019 6:00 PM Los Alamos PM 2.5: 4.9382 µg/m3 on Tuesday, March 26, 2019 5:30 PM Los Alamos PM 2.5: 4.8968 µg/m3 on Tuesday, March 26, 2019 5:00 PM Los Alamos PM 2.5: 5.0208 µg/m3 on Tuesday, March 26, 2019 4:30 PM Los Alamos PM 2.5: 5.0258 µg/m3 on Tuesday, March 26, 2019 4:00 PM Los Alamos PM 2.5: 4.9646 µg/m3 on Tuesday, March 26, 2019 3:30 PM Los Alamos PM 2.5: 5.1033 µg/m3 on Tuesday, March 26, 2019 3:00 PM Los Alamos PM 2.5: 5.0779 µg/m3 on Tuesday, March 26, 2019 2:30 PM Los Alamos PM 2.5: 5.264 µg/m3 on Tuesday, March 26, 2019 2:00 PM Los Alamos PM 2.5: 5.2696 µg/m3 on Tuesday, March 26, 2019 1:30 PM Los Alamos PM 2.5: 5.4388 µg/m3 on Tuesday, March 26, 2019 1:00 PM Los Alamos PM 2.5: 5.4572 µg/m3 on Tuesday, March 26, 2019 12:30 PM Los Alamos PM 2.5: 5.4865 µg/m3 on Tuesday, March 26, 2019 12:00 PM Los Alamos PM 2.5: 5.5482 µg/m3 on Tuesday, March 26, 2019 11:30 AM Los Alamos PM 2.5: 5.574 µg/m3 on Tuesday, March 26, 2019 11:00 AM Los Alamos PM 2.5: 5.6349 µg/m3 on Tuesday, March 26, 2019 10:30 AM Los Alamos PM 2.5: 5.6226 µg/m3 on Tuesday, March 26, 2019 10:00 AM Los Alamos PM 2.5: 5.3798 µg/m3 on Tuesday, March 26, 2019 9:30 AM Los Alamos PM 2.5: 5.4257 µg/m3 on Tuesday, March 26, 2019 9:00 AM Los Alamos PM 2.5: 5.4416 µg/m3 on Tuesday, March 26, 2019 8:30 AM Los Alamos PM 2.5: 5.0894 µg/m3 on Tuesday, March 26, 2019 8:00 AM Los Alamos PM 2.5: 4.9326 µg/m3 on Tuesday, March 26, 2019 7:30 AM Los Alamos PM 2.5: 4.9369 µg/m3 on Tuesday, March 26, 2019 7:00 AM Los Alamos PM 2.5: 4.8226 µg/m3 on Tuesday, March 26, 2019 6:30 AM Los Alamos PM 2.5: 4.6195 µg/m3 on Tuesday, March 26, 2019 6:00 AM Los Alamos PM 2.5: 4.622 µg/m3 on Tuesday, March 26, 2019 5:30 AM Los Alamos PM 2.5: 4.5439 µg/m3 on Tuesday, March 26, 2019 5:00 AM Los Alamos PM 2.5: 4.6519 µg/m3 on Tuesday, March 26, 2019 4:30 AM Los Alamos PM 2.5: 4.5781 µg/m3 on Tuesday, March 26, 2019 4:00 AM Los Alamos PM 2.5: 4.6409 µg/m3 on Tuesday, March 26, 2019 3:30 AM Los Alamos PM 2.5: 4.6625 µg/m3 on Tuesday, March 26, 2019 3:00 AM Los Alamos PM 2.5: 4.6103 µg/m3 on Tuesday, March 26, 2019 2:30 AM Los Alamos PM 2.5: 4.6468 µg/m3 on Tuesday, March 26, 2019 2:00 AM Los Alamos PM 2.5: 4.6413 µg/m3 on Tuesday, March 26, 2019 1:30 AM Los Alamos PM 2.5: 4.6795 µg/m3 on Tuesday, March 26, 2019 1:00 AM Los Alamos PM 2.5: 4.6379 µg/m3 on Tuesday, March 26, 2019 12:30 AM Los Alamos PM 2.5: 4.4473 µg/m3 on Tuesday, March 26, 2019 12:00 AM Los Alamos PM 2.5: 4.6019 µg/m3 on Monday, March 25, 2019 11:30 PM Los Alamos PM 2.5: 4.4903 µg/m3 on Monday, March 25, 2019 11:00 PM Los Alamos PM 2.5: 4.3835 µg/m3 on Monday, March 25, 2019 10:30 PM Los Alamos PM 2.5: 4.45 µg/m3 on Monday, March 25, 2019 10:00 PM Los Alamos PM 2.5: 4.2005 µg/m3 on Monday, March 25, 2019 9:30 PM Los Alamos PM 2.5: 4.2158 µg/m3 on Monday, March 25, 2019 9:00 PM Los Alamos PM 2.5: 4.2403 µg/m3 on Monday, March 25, 2019 8:30 PM Los Alamos PM 2.5: 3.5466 µg/m3 on Monday, March 25, 2019 8:00 PM Los Alamos PM 2.5: 3.8786 µg/m3 on Monday, March 25, 2019 7:30 PM Los Alamos PM 2.5: 3.3344 µg/m3 on Monday, March 25, 2019 7:00 PM Los Alamos PM 2.5: 3.119 µg/m3 on Monday, March 25, 2019 6:30 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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