Los Alamos National Laboratory links to site home page

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 4.0804 µg/m3 4.4299 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: 4.4299 µg/m3 on Saturday, June 25, 2016 7:00 AM White Rock PM 2.5: 4.5019 µg/m3 on Saturday, June 25, 2016 6:30 AM White Rock PM 2.5: 4.4426 µg/m3 on Saturday, June 25, 2016 6:00 AM White Rock PM 2.5: 4.4557 µg/m3 on Saturday, June 25, 2016 5:30 AM White Rock PM 2.5: 4.5265 µg/m3 on Saturday, June 25, 2016 5:00 AM White Rock PM 2.5: 4.4931 µg/m3 on Saturday, June 25, 2016 4:30 AM White Rock PM 2.5: 4.5236 µg/m3 on Saturday, June 25, 2016 4:00 AM White Rock PM 2.5: 4.5018 µg/m3 on Saturday, June 25, 2016 3:30 AM White Rock PM 2.5: 4.4694 µg/m3 on Saturday, June 25, 2016 3:00 AM White Rock PM 2.5: 4.39 µg/m3 on Saturday, June 25, 2016 2:30 AM White Rock PM 2.5: 4.3708 µg/m3 on Saturday, June 25, 2016 2:00 AM White Rock PM 2.5: 4.3425 µg/m3 on Saturday, June 25, 2016 1:30 AM White Rock PM 2.5: 4.315 µg/m3 on Saturday, June 25, 2016 1:00 AM White Rock PM 2.5: 4.2712 µg/m3 on Saturday, June 25, 2016 12:30 AM White Rock PM 2.5: 4.1947 µg/m3 on Saturday, June 25, 2016 12:00 AM White Rock PM 2.5: 4.1438 µg/m3 on Friday, June 24, 2016 11:30 PM White Rock PM 2.5: 4.2325 µg/m3 on Friday, June 24, 2016 11:00 PM White Rock PM 2.5: 4.1953 µg/m3 on Friday, June 24, 2016 10:30 PM White Rock PM 2.5: 4.254 µg/m3 on Friday, June 24, 2016 10:00 PM White Rock PM 2.5: 4.4359 µg/m3 on Friday, June 24, 2016 9:30 PM White Rock PM 2.5: 4.5131 µg/m3 on Friday, June 24, 2016 9:00 PM White Rock PM 2.5: 4.8546 µg/m3 on Friday, June 24, 2016 8:30 PM White Rock PM 2.5: 4.9141 µg/m3 on Friday, June 24, 2016 8:00 PM White Rock PM 2.5: 4.9691 µg/m3 on Friday, June 24, 2016 7:30 PM White Rock PM 2.5: 4.9101 µg/m3 on Friday, June 24, 2016 7:00 PM White Rock PM 2.5: 4.893 µg/m3 on Friday, June 24, 2016 6:30 PM White Rock PM 2.5: 4.9445 µg/m3 on Friday, June 24, 2016 6:00 PM White Rock PM 2.5: 4.8904 µg/m3 on Friday, June 24, 2016 5:30 PM White Rock PM 2.5: 4.8374 µg/m3 on Friday, June 24, 2016 5:00 PM White Rock PM 2.5: 5.1444 µg/m3 on Friday, June 24, 2016 4:30 PM White Rock PM 2.5: 5.4155 µg/m3 on Friday, June 24, 2016 4:00 PM White Rock PM 2.5: 5.4948 µg/m3 on Friday, June 24, 2016 3:30 PM White Rock PM 2.5: 5.4514 µg/m3 on Friday, June 24, 2016 3:00 PM White Rock PM 2.5: 5.425 µg/m3 on Friday, June 24, 2016 2:30 PM White Rock PM 2.5: 5.4682 µg/m3 on Friday, June 24, 2016 2:00 PM White Rock PM 2.5: 5.5628 µg/m3 on Friday, June 24, 2016 1:30 PM White Rock PM 2.5: 5.4398 µg/m3 on Friday, June 24, 2016 1:00 PM White Rock PM 2.5: 5.4852 µg/m3 on Friday, June 24, 2016 12:30 PM White Rock PM 2.5: 5.4105 µg/m3 on Friday, June 24, 2016 12:00 PM White Rock PM 2.5: 5.3916 µg/m3 on Friday, June 24, 2016 11:30 AM White Rock PM 2.5: 5.478 µg/m3 on Friday, June 24, 2016 11:00 AM White Rock PM 2.5: 5.4735 µg/m3 on Friday, June 24, 2016 10:30 AM White Rock PM 2.5: 5.1582 µg/m3 on Friday, June 24, 2016 10:00 AM Los Alamos PM 2.5: 4.0804 µg/m3 on Saturday, June 25, 2016 9:30 AM Los Alamos PM 2.5: 4.0799 µg/m3 on Saturday, June 25, 2016 9:00 AM Los Alamos PM 2.5: 4.0925 µg/m3 on Saturday, June 25, 2016 8:30 AM Los Alamos PM 2.5: 4.0965 µg/m3 on Saturday, June 25, 2016 8:00 AM Los Alamos PM 2.5: 4.0973 µg/m3 on Saturday, June 25, 2016 7:30 AM Los Alamos PM 2.5: 4.062 µg/m3 on Saturday, June 25, 2016 7:00 AM Los Alamos PM 2.5: 4.0841 µg/m3 on Saturday, June 25, 2016 6:30 AM Los Alamos PM 2.5: 4.0918 µg/m3 on Saturday, June 25, 2016 6:00 AM Los Alamos PM 2.5: 4.1282 µg/m3 on Saturday, June 25, 2016 5:30 AM Los Alamos PM 2.5: 4.0885 µg/m3 on Saturday, June 25, 2016 5:00 AM Los Alamos PM 2.5: 4.0695 µg/m3 on Saturday, June 25, 2016 4:30 AM Los Alamos PM 2.5: 4.0873 µg/m3 on Saturday, June 25, 2016 4:00 AM Los Alamos PM 2.5: 4.0721 µg/m3 on Saturday, June 25, 2016 3:30 AM Los Alamos PM 2.5: 4.0573 µg/m3 on Saturday, June 25, 2016 3:00 AM Los Alamos PM 2.5: 4.0334 µg/m3 on Saturday, June 25, 2016 2:30 AM Los Alamos PM 2.5: 3.9817 µg/m3 on Saturday, June 25, 2016 2:00 AM Los Alamos PM 2.5: 3.969 µg/m3 on Saturday, June 25, 2016 1:30 AM Los Alamos PM 2.5: 3.9452 µg/m3 on Saturday, June 25, 2016 1:00 AM Los Alamos PM 2.5: 3.9076 µg/m3 on Saturday, June 25, 2016 12:30 AM Los Alamos PM 2.5: 3.8984 µg/m3 on Saturday, June 25, 2016 12:00 AM Los Alamos PM 2.5: 3.8337 µg/m3 on Friday, June 24, 2016 11:30 PM Los Alamos PM 2.5: 3.9557 µg/m3 on Friday, June 24, 2016 11:00 PM Los Alamos PM 2.5: 3.9665 µg/m3 on Friday, June 24, 2016 10:30 PM Los Alamos PM 2.5: 3.9419 µg/m3 on Friday, June 24, 2016 10:00 PM Los Alamos PM 2.5: 3.9643 µg/m3 on Friday, June 24, 2016 9:30 PM Los Alamos PM 2.5: 4.0474 µg/m3 on Friday, June 24, 2016 9:00 PM Los Alamos PM 2.5: 4.1591 µg/m3 on Friday, June 24, 2016 8:30 PM Los Alamos PM 2.5: 4.1466 µg/m3 on Friday, June 24, 2016 8:00 PM Los Alamos PM 2.5: 4.2531 µg/m3 on Friday, June 24, 2016 7:30 PM Los Alamos PM 2.5: 4.3051 µg/m3 on Friday, June 24, 2016 7:00 PM Los Alamos PM 2.5: 4.2553 µg/m3 on Friday, June 24, 2016 6:30 PM Los Alamos PM 2.5: 4.1997 µg/m3 on Friday, June 24, 2016 6:00 PM Los Alamos PM 2.5: 4.1813 µg/m3 on Friday, June 24, 2016 5:30 PM Los Alamos PM 2.5: 4.1095 µg/m3 on Friday, June 24, 2016 5:00 PM Los Alamos PM 2.5: 3.9861 µg/m3 on Friday, June 24, 2016 4:30 PM Los Alamos PM 2.5: 3.9998 µg/m3 on Friday, June 24, 2016 4:00 PM Los Alamos PM 2.5: 4.1111 µg/m3 on Friday, June 24, 2016 3:30 PM Los Alamos PM 2.5: 4.3183 µg/m3 on Friday, June 24, 2016 3:00 PM Los Alamos PM 2.5: 4.4526 µg/m3 on Friday, June 24, 2016 2:30 PM Los Alamos PM 2.5: 4.3493 µg/m3 on Friday, June 24, 2016 2:00 PM Los Alamos PM 2.5: 4.32 µg/m3 on Friday, June 24, 2016 1:30 PM Los Alamos PM 2.5: 4.3601 µg/m3 on Friday, June 24, 2016 1:00 PM Los Alamos PM 2.5: 4.2751 µg/m3 on Friday, June 24, 2016 12:30 PM Los Alamos PM 2.5: 4.2618 µg/m3 on Friday, June 24, 2016 12:00 PM Los Alamos PM 2.5: 4.2111 µg/m3 on Friday, June 24, 2016 11:30 AM Los Alamos PM 2.5: 4.1792 µg/m3 on Friday, June 24, 2016 11:00 AM Los Alamos PM 2.5: 4.1336 µg/m3 on Friday, June 24, 2016 10:30 AM Los Alamos PM 2.5: 4.116 µg/m3 on Friday, June 24, 2016 10:00 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.
Visit Blogger Join Us on Facebook Follow Us on Twitter See our Flickr Photos Watch Our YouTube Videos Find Us on LinkedIn