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Total Atmospheric PM-2.5 Hourly Averages

Fine particulates (PM-2.5) are generally emitted from activities such as industrial and residential combustion and from vehicle exhaust. Fine particles are also formed in the atmosphere when gases such as sulfur dioxide, nitrogen oxides, and volatile organic compounds, emitted by combustion activities, are transformed by chemical reactions in the air. Large-scale agricultural burning or sand storms can produce huge volumes of fine particulates. PM-2.5 data is the near real-time measurement of particulate matter 2.5 microns or less in size from the surrounding air. This measurement is made at local conditions, and is not corrected for temperature or pressure.

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Total Atmospheric PM-2.5 Hourly Averages for Sunday, April 30, 2017.
measured in no units
RegionCAMSMorningAfternoonCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:0010:0011:00Noon 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00
CA-NV-AZ-HI-AS-GU - all times are in PST
1023  1 3.756.103.274.166.116.622.350.843.17-1.04-0.212.201.338.451.464.114.18 FEW NA NA NA 1023  1 3 Oth Gov
Notes:
- These sites are maintained and operated by Bishop Paiute Tribe EMO-Air.

TREX does not certify the validity or quality of data it hosts from other monitoring entities.
Maximum values for the day are bold within the table. Minimum values are bold italic.

PLEASE NOTE: This data has not been verified by the TREX and may change. This is the most current data, but it is not official until it has been certified by our technical staff. Data is collected from TREX ambient monitoring sites and may include data collected by other outside agencies. This data is updated hourly. All times shown are in local standard time unless otherwise indicated.