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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 1.9664 µg/m3 1.9549 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: 1.9597 µg/m3 on Sunday, July 23, 2017 12:30 PM White Rock PM 2.5: 2.0033 µg/m3 on Sunday, July 23, 2017 12:00 PM White Rock PM 2.5: 1.9813 µg/m3 on Sunday, July 23, 2017 11:30 AM White Rock PM 2.5: 2.0607 µg/m3 on Sunday, July 23, 2017 11:00 AM White Rock PM 2.5: 2.0669 µg/m3 on Sunday, July 23, 2017 10:30 AM White Rock PM 2.5: 2.0359 µg/m3 on Sunday, July 23, 2017 10:00 AM White Rock PM 2.5: 2.155 µg/m3 on Sunday, July 23, 2017 9:30 AM White Rock PM 2.5: 2.1714 µg/m3 on Sunday, July 23, 2017 9:00 AM White Rock PM 2.5: 2.1651 µg/m3 on Sunday, July 23, 2017 8:30 AM White Rock PM 2.5: 2.1489 µg/m3 on Sunday, July 23, 2017 8:00 AM White Rock PM 2.5: 2.1952 µg/m3 on Sunday, July 23, 2017 7:30 AM White Rock PM 2.5: 2.2133 µg/m3 on Sunday, July 23, 2017 7:00 AM White Rock PM 2.5: 2.2568 µg/m3 on Sunday, July 23, 2017 6:30 AM White Rock PM 2.5: 2.2369 µg/m3 on Sunday, July 23, 2017 6:00 AM White Rock PM 2.5: 2.297 µg/m3 on Sunday, July 23, 2017 5:30 AM White Rock PM 2.5: 2.264 µg/m3 on Sunday, July 23, 2017 5:00 AM White Rock PM 2.5: 2.2811 µg/m3 on Sunday, July 23, 2017 4:30 AM White Rock PM 2.5: 2.2619 µg/m3 on Sunday, July 23, 2017 4:00 AM White Rock PM 2.5: 2.2753 µg/m3 on Sunday, July 23, 2017 3:30 AM White Rock PM 2.5: 2.3825 µg/m3 on Sunday, July 23, 2017 3:00 AM White Rock PM 2.5: 2.3642 µg/m3 on Sunday, July 23, 2017 2:30 AM White Rock PM 2.5: 2.3314 µg/m3 on Sunday, July 23, 2017 2:00 AM White Rock PM 2.5: 2.4059 µg/m3 on Sunday, July 23, 2017 1:30 AM White Rock PM 2.5: 2.4813 µg/m3 on Sunday, July 23, 2017 1:00 AM White Rock PM 2.5: 2.4287 µg/m3 on Sunday, July 23, 2017 12:30 AM White Rock PM 2.5: 2.4245 µg/m3 on Sunday, July 23, 2017 12:00 AM White Rock PM 2.5: 2.4873 µg/m3 on Saturday, July 22, 2017 11:30 PM White Rock PM 2.5: 2.524 µg/m3 on Saturday, July 22, 2017 11:00 PM White Rock PM 2.5: 2.5607 µg/m3 on Saturday, July 22, 2017 10:30 PM White Rock PM 2.5: 2.6286 µg/m3 on Saturday, July 22, 2017 10:00 PM White Rock PM 2.5: 2.7293 µg/m3 on Saturday, July 22, 2017 9:30 PM White Rock PM 2.5: 2.7376 µg/m3 on Saturday, July 22, 2017 9:00 PM White Rock PM 2.5: 2.7162 µg/m3 on Saturday, July 22, 2017 8:30 PM White Rock PM 2.5: 2.6568 µg/m3 on Saturday, July 22, 2017 8:00 PM White Rock PM 2.5: 2.6561 µg/m3 on Saturday, July 22, 2017 7:30 PM White Rock PM 2.5: 2.6331 µg/m3 on Saturday, July 22, 2017 7:00 PM White Rock PM 2.5: 2.5534 µg/m3 on Saturday, July 22, 2017 6:30 PM White Rock PM 2.5: 2.5145 µg/m3 on Saturday, July 22, 2017 6:00 PM White Rock PM 2.5: 2.4397 µg/m3 on Saturday, July 22, 2017 5:30 PM White Rock PM 2.5: 2.3571 µg/m3 on Saturday, July 22, 2017 5:00 PM White Rock PM 2.5: 2.3119 µg/m3 on Saturday, July 22, 2017 4:30 PM White Rock PM 2.5: 2.2305 µg/m3 on Saturday, July 22, 2017 4:00 PM White Rock PM 2.5: 2.1719 µg/m3 on Saturday, July 22, 2017 3:30 PM White Rock PM 2.5: 2.1354 µg/m3 on Saturday, July 22, 2017 3:00 PM White Rock PM 2.5: 2.0438 µg/m3 on Saturday, July 22, 2017 2:30 PM White Rock PM 2.5: 2.077 µg/m3 on Saturday, July 22, 2017 2:00 PM Los Alamos PM 2.5: 1.9664 µg/m3 on Sunday, July 23, 2017 12:30 PM Los Alamos PM 2.5: 1.9866 µg/m3 on Sunday, July 23, 2017 12:00 PM Los Alamos PM 2.5: 2.0065 µg/m3 on Sunday, July 23, 2017 11:30 AM Los Alamos PM 2.5: 2.1171 µg/m3 on Sunday, July 23, 2017 11:00 AM Los Alamos PM 2.5: 2.1198 µg/m3 on Sunday, July 23, 2017 10:30 AM Los Alamos PM 2.5: 2.1941 µg/m3 on Sunday, July 23, 2017 10:00 AM Los Alamos PM 2.5: 2.0086 µg/m3 on Sunday, July 23, 2017 9:30 AM Los Alamos PM 2.5: 2.4351 µg/m3 on Sunday, July 23, 2017 9:00 AM Los Alamos PM 2.5: 2.2999 µg/m3 on Sunday, July 23, 2017 8:30 AM Los Alamos PM 2.5: 2.3265 µg/m3 on Sunday, July 23, 2017 8:00 AM Los Alamos PM 2.5: 2.257 µg/m3 on Sunday, July 23, 2017 7:30 AM Los Alamos PM 2.5: 2.2604 µg/m3 on Sunday, July 23, 2017 7:00 AM Los Alamos PM 2.5: 2.281 µg/m3 on Sunday, July 23, 2017 6:30 AM Los Alamos PM 2.5: 2.2594 µg/m3 on Sunday, July 23, 2017 6:00 AM Los Alamos PM 2.5: 2.2896 µg/m3 on Sunday, July 23, 2017 5:30 AM Los Alamos PM 2.5: 2.308 µg/m3 on Sunday, July 23, 2017 5:00 AM Los Alamos PM 2.5: 2.3247 µg/m3 on Sunday, July 23, 2017 4:30 AM Los Alamos PM 2.5: 2.2861 µg/m3 on Sunday, July 23, 2017 4:00 AM Los Alamos PM 2.5: 2.3382 µg/m3 on Sunday, July 23, 2017 3:30 AM Los Alamos PM 2.5: 2.3212 µg/m3 on Sunday, July 23, 2017 3:00 AM Los Alamos PM 2.5: 2.4017 µg/m3 on Sunday, July 23, 2017 2:30 AM Los Alamos PM 2.5: 2.4692 µg/m3 on Sunday, July 23, 2017 2:00 AM Los Alamos PM 2.5: 2.4552 µg/m3 on Sunday, July 23, 2017 1:30 AM Los Alamos PM 2.5: 2.406 µg/m3 on Sunday, July 23, 2017 1:00 AM Los Alamos PM 2.5: 2.4729 µg/m3 on Sunday, July 23, 2017 12:30 AM Los Alamos PM 2.5: 2.5998 µg/m3 on Sunday, July 23, 2017 12:00 AM Los Alamos PM 2.5: 2.5427 µg/m3 on Saturday, July 22, 2017 11:30 PM Los Alamos PM 2.5: 2.6355 µg/m3 on Saturday, July 22, 2017 11:00 PM Los Alamos PM 2.5: 2.6279 µg/m3 on Saturday, July 22, 2017 10:30 PM Los Alamos PM 2.5: 2.7085 µg/m3 on Saturday, July 22, 2017 10:00 PM Los Alamos PM 2.5: 2.7726 µg/m3 on Saturday, July 22, 2017 9:30 PM Los Alamos PM 2.5: 2.7121 µg/m3 on Saturday, July 22, 2017 9:00 PM Los Alamos PM 2.5: 2.7125 µg/m3 on Saturday, July 22, 2017 8:30 PM Los Alamos PM 2.5: 3.3592 µg/m3 on Saturday, July 22, 2017 8:00 PM Los Alamos PM 2.5: 3.3667 µg/m3 on Saturday, July 22, 2017 7:30 PM Los Alamos PM 2.5: 3.3853 µg/m3 on Saturday, July 22, 2017 7:00 PM Los Alamos PM 2.5: 3.3046 µg/m3 on Saturday, July 22, 2017 6:30 PM Los Alamos PM 2.5: 3.3002 µg/m3 on Saturday, July 22, 2017 6:00 PM Los Alamos PM 2.5: 3.2495 µg/m3 on Saturday, July 22, 2017 5:30 PM Los Alamos PM 2.5: 3.4035 µg/m3 on Saturday, July 22, 2017 5:00 PM Los Alamos PM 2.5: 3.205 µg/m3 on Saturday, July 22, 2017 4:30 PM Los Alamos PM 2.5: 3.2192 µg/m3 on Saturday, July 22, 2017 4:00 PM Los Alamos PM 2.5: 3.1731 µg/m3 on Saturday, July 22, 2017 3:30 PM Los Alamos PM 2.5: 3.0574 µg/m3 on Saturday, July 22, 2017 3:00 PM Los Alamos PM 2.5: 3.0605 µg/m3 on Saturday, July 22, 2017 2:30 PM Los Alamos PM 2.5: 2.9974 µg/m3 on Saturday, July 22, 2017 2:00 PM Los Alamos PM 2.5: 3.065 µg/m3 on Saturday, July 22, 2017 1:30 PM Los Alamos PM 2.5: 3.1475 µg/m3 on Saturday, July 22, 2017 1:00 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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