Fine particles often dominate the conversation about air pollution and health, but PM10 remains a regulated pollutant with its own sources, health concerns, and monitoring requirements. Understanding it is essential to a complete monitoring program.
EPA defines PM10 as inhalable particles with diameters that are generally 10 micrometers and smaller, and PM2.5 as fine inhalable particles generally 2.5 micrometers and smaller.[1] That means PM10 includes the fine fraction as well as coarser particles between 2.5 and 10 micrometers. Particles larger than 10 micrometers, like sand and large dust, are not regulated by EPA.[1] Tisch Environmental builds equipment for both: high volume PM10 samplers and the TE-WILBUR10, an EPA-designated PM10 Federal Reference Method sampler (RFPS-0714-216).[6][7]
Where PM10 Comes From
Some particles are emitted directly from sources such as construction sites, unpaved roads, fields, smokestacks, or fires.[1] Common contributors to PM10 include:
The Respiratory Defense: Impact on Human Health
According to EPA, some particles less than 10 micrometers in diameter can get deep into the lungs, and some may even get into the bloodstream. Of these, PM2.5 poses the greatest risk to health.[1] Coarser particles in the PM10 range can still settle in the bronchi and lungs.[5]
Inhalable particles can trigger inflammation and are associated with conditions including asthma and bronchitis.[3] For workers and communities near dusty roads and industries, where PM10 is commonly found,[4] repeated exposure is a reason for consistent monitoring and mitigation.
A Local Pollutant
PM10 is often found near roadways and dusty industries,[4] which is why dust control is a routine part of construction and site management, and why source-adjacent monitoring matters.
Regulatory Standards and Monitoring
EPA's primary and secondary 24-hour PM10 standard is 150 µg/m³, not to be exceeded more than once per year on average over a three-year period. The annual PM10 standard was revoked in 2006.[2] For comparison, the primary annual PM2.5 standard is 9.0 µg/m³, a 2024 revision that the D.C. Circuit upheld in June 2026.[2][11] PM10 reference measurements are based on 40 CFR Part 50, Appendix J, with equivalent methods designated under 40 CFR Part 53.[8]
Tisch Environmental's high volume PM10 samplers operate at 36–60 ft³/min over 24-hour sampling periods, drawing air through a PM10 size-selective inlet that captures larger particles while allowing PM10 to continue through to the filter.[6]
PM10 Mitigation Strategies
The Expert Solution: PM10 High Volume Sampling
Accurate PM10 data starts with the inlet. In a Tisch Environmental high volume PM10 sampler, the size-selective inlet separates out larger particles so the filter collects the PM10 fraction, while the PLUS flow controller's built-in ambient temperature and barometric pressure sensors provide real-time flow control and data logging.[6] For programs that prefer a low volume FRM, the TE-WILBUR10 provides an EPA-designated PM10 option.[7]
Managing the Coarse Challenge
From industrial compliance to urban air quality, PM10 monitoring is a core part of environmental health programs. Effective management combines on-site mitigation with rigorous, reference-method data collection.
Inlet Selection
Use an EPA-designated PM10 sampler and inlet configuration for regulatory work.[8]
Siting
Site samplers to match your monitoring objective, whether that's area-wide air quality or a specific dust source.
Mass Analysis
Use gravimetric analysis of the collected filter to determine PM10 mass concentration.
Need Professional PM10 Monitoring Solutions?
Talk with our team about high volume and low volume PM10 options for your project's federal and local air quality requirements.
Consult with a Technical EngineerA quick reference for consultants and researchers choosing a sampling approach.
| Feature | PM2.5 (Fine) | PM10 (Inhalable) |
|---|---|---|
| Diameter | Generally 2.5 µm and smaller[1] | Generally 10 µm and smaller[1] |
| Health Risk | Greatest risk to health among PM; can reach deep into the lungs and bloodstream[1] | Can get deep into the lungs[1] |
| Primary Annual Standard | 9.0 µg/m³[2] | None (revoked in 2006)[2] |
| 24-Hour Standard | 35 µg/m³ (98th percentile, 3-year average)[2] | 150 µg/m³ (1 expected exceedance per year, 3-year average)[2] |
| Tisch FRM Options | TE-WILBUR2.5 (RFPS-1014-219)[7] | TE-WILBUR10 (RFPS-0714-216) or high volume PM10[6][7] |