Mapping Air Pollutants With 2BTechnologies Personal Air Monitor


Along the Road to the White House No-Excuses Tour, CPR Initiative General Counsel & Executive Director Dan Galpern is using the Personal Air Monitor or PAM developed by 2BTechnologies for mapping air pollutants encountered en-route. According to 2BTech, “PAM is designed to measure only the air pollutants for which sensors are highly reliable, which includes particulate matter (PM1, PM2.5), carbon monoxide (CO) and carbon dioxide (CO2),” and “is now used in a wide range of applications such as monitoring of smoke by the National Forest Service during forest fires…” 

The pollutants measured by the PAM are all products of combustion, which means it is one of the best ways to track and map pollution originating from automobile exhaust, power plants, forest fires and other combustion sources (2BTechnologies). However, as pointed out in the product description, the most important measurements to look out for are the PM2.5 and PM1 “because only particles smaller than 2.5 µm enter the lungs where they have adverse health effects such as triggering asthma attacks.” 

Conveniently, Dan can also measure levels of CO2 in the air with this portable device. And as 2BTech sums up perfectly, this pollutant is particularly “of interest outdoors because it is the principal greenhouse gas responsible for global warming.” However, “CO2 [also] builds up inside [of] buildings due to human respiration and affects human cognitive abilities at concentrations above about 1,000 ppm.”

Now you can view the data collected by the PAM that Dan is carrying as he makes his way to the White House where he will hand deliver the CPR Initiative Petition to President Biden, urging him to direct the EPA to Impose a Rising Fee on Carbon Pollution Without Further Delay. See our Petition.

Live Map View

Courtesy of 2BTechnologies.
If this map is taking too long to load, go to

Hint: Use your cursor to zoom in and hover over the points and view the data collected.
Overall air quality is color coded using green, yellow and red; green being good quality, and red being very bad.

PAM Sensor Specifications

Carbon Dioxide (CO2)

Sensor: Telaire T6713 (NDIR)
Measurement Range: 0-5000 ppm
Accuracy: 400-5000 ppm: ± 30 ppm, ± 3% of reading
Response Time: < 3 min for 90% step change
Particulate Matter (PM1, PM2.5)

Sensor: Plantower PMS7003 (Laser Scattering)
Particle Size Range: 0.3-10 μm
Mass Concentration Range: 0-999 μg/m3
Count Accuracy: 50% @ 0.3 μm, 98% @ ≥ 0.5μm
Response Time: < 10 s
Carbon Monoxide (CO)

Sensor: Alphasense CO-A4 (Electrochemical)
Response Time: < 30 s for a 10-ppm step change
Precision: contact 2B Tech for information
Measurement Range: 0-500 ppm

Sensor: Bosch BME680
Measurement Range: 300 to 1100 hPa
Accuracy: ±1.0 hPa
Resolution: 0.18 Pa
Long-Term Stability: ±1.0 hPa per year

Sensor: Honeywell HIH8120 (Platinum RTD)
Measurement Range: 0-65 °C
Accuracy: ± 0.5 °C from 5 °C to 50 °C

Sensor: Honeywell HIH8120 (Capacitive)
Measurement Range: 0 to 100 %RH
Accuracy: ± 2 %RH
Response Time: 8 s
Sensor Specifications Table Courtesy of 2BTechnologies


  • Measures CO, CO2, PM1, PM2.5, temperature, pressure and relative humidity
  • Bluetooth data broadcast to nearby mobile phones (IOS and Android)
  • AQTreks mobile app for real-time mapping and graphing of data
  • 2G/3G/LTE real time cellular data transmission to the cloud
  • Wifi connectivity addressable over the internet
  • Internal GPS
  • microSD data storage
  • Rechargeable 3.7 V, 200 mAh battery with 6-hr to 8-hr life
  • A NEMA stationary PAM enclosure is available for fixed base monitoring
  • Can be used in combination with a Model 106 FEM ozone monitor in the Community Air Monitor (CAM) enclosure for continuous measurements at a fixed location
  • Can be used in the 2B Technologies CarTopper for mobile monitoring via automobiles and other vehicles
Courtesy of:
Portable Instruments for Air Pollution Measurements