diff --git a/Adafruit_Sensor.cpp b/Adafruit_Sensor.cpp
index a66e2d0..94aa0b5 100644
--- a/Adafruit_Sensor.cpp
+++ b/Adafruit_Sensor.cpp
@@ -73,9 +73,27 @@ void Adafruit_Sensor::printSensorDetails(void) {
   case SENSOR_TYPE_CO2:
     Serial.print(F("Carbon Dioxide (ppm)"));
     break;
-  case SENSOR_TYPE_eCO2:
+  case SENSOR_TYPE_ECO2:
     Serial.print(F("Equivalent/estimated CO2 (ppm)"));
     break;
+  case SENSOR_TYPE_PM10_STD:
+    Serial.print(F("Standard Particulate Matter 1.0 (ppm)"));
+    break;
+  case SENSOR_TYPE_PM25_STD:
+    Serial.print(F("Standard Particulate Matter 2.5 (ppm)"));
+    break;
+  case SENSOR_TYPE_PM100_STD:
+    Serial.print(F("Standard Particulate Matter 100 (ppm)"));
+    break;
+  case SENSOR_TYPE_PM10_ENV:
+    Serial.print(F("Environmental Particulate Matter 1.0 (ppm)"));
+    break;
+  case SENSOR_TYPE_PM25_ENV:
+    Serial.print(F("Environmental Particulate Matter 2.5 (ppm)"));
+    break;
+  case SENSOR_TYPE_PM100_ENV:
+    Serial.print(F("Environmental Particulate Matter 100 (ppm)"));
+    break;
   }
 
   Serial.println();
diff --git a/Adafruit_Sensor.h b/Adafruit_Sensor.h
index 34b4196..8cb6c97 100644
--- a/Adafruit_Sensor.h
+++ b/Adafruit_Sensor.h
@@ -71,7 +71,13 @@ typedef enum {
   SENSOR_TYPE_VOC_INDEX = (19),
   SENSOR_TYPE_NOX_INDEX = (20),
   SENSOR_TYPE_CO2 = (21),
-  SENSOR_TYPE_eCO2 = (22),
+  SENSOR_TYPE_ECO2 = (22),
+  SENSOR_TYPE_PM10_STD = (23),
+  SENSOR_TYPE_PM25_STD = (24),
+  SENSOR_TYPE_PM100_STD = (25),
+  SENSOR_TYPE_PM10_ENV = (26),
+  SENSOR_TYPE_PM25_ENV = (27),
+  SENSOR_TYPE_PM100_ENV = (28)
 } sensors_type_t;
 
 /** struct sensors_vec_s is used to return a vector in a common format. */
@@ -147,6 +153,18 @@ typedef struct {
     float CO2;       /**< Measured CO2 in parts per million (ppm) */
     float eCO2;      /**< equivalent/estimated CO2 in parts per million (ppm
                         estimated from some other measurement) */
+    float pm10_std;  /**< Standard Particulate Matter 1.0 in parts per million
+                        (ppm) */
+    float pm25_std;  /**< Standard Particulate Matter 2.5 in parts per million
+                        (ppm) */
+    float pm100_std; /**< Standard Particulate Matter 100 in parts per million
+                        (ppm) */
+    float pm10_env;  /**< Environmental Particulate Matter 1.0 in parts per
+                        million (ppm) */
+    float pm25_env;  /**< Environmental Particulate Matter 2.5 in parts per
+                        million (ppm) */
+    float pm100_env; /**< EnvironmentalParticulate Matter 100 in parts per
+                        million (ppm) */
     sensors_color_t color; /**< color in RGB component values */
   };                       ///< Union for the wide ranges of data we can carry
 } sensors_event_t;
diff --git a/README.md b/README.md
index a6c0216..16574fd 100644
--- a/README.md
+++ b/README.md
@@ -79,7 +79,13 @@ typedef enum
   SENSOR_TYPE_VOC_INDEX             = (19),
   SENSOR_TYPE_NOX_INDEX             = (20),
   SENSOR_TYPE_CO2                   = (21),
-  SENSOR_TYPE_eCO2                  = (22),
+  SENSOR_TYPE_ECO2                  = (22),
+  SENSOR_TYPE_PM10_STD              = (23),
+  SENSOR_TYPE_PM25_STD              = (24),
+  SENSOR_TYPE_PM100_STD             = (25),
+  SENSOR_TYPE_PM10_ENV              = (26),
+  SENSOR_TYPE_PM25_ENV              = (27),
+  SENSOR_TYPE_PM100_ENV             = (28)
 } sensors_type_t;
 ```
 
@@ -147,6 +153,12 @@ typedef struct
         float           nox_index;
         float           CO2,
         float           eCO2,
+        float           pm10_std,
+        float           pm25_std,
+        float           pm100_std,
+        float           pm10_env,
+        float           pm25_env,
+        float           pm100_env,
         sensors_color_t color;
     };
 } sensors_event_t;
@@ -194,7 +206,12 @@ A key part of the abstraction layer is the standardisation of values on SI units
 - **nox_index**: values are an **index** from 1-500 with 100 being normal
 - **CO2**: values are in **parts per million*** (ppm)
 - **eCO2**: values are in **parts per million*** (ppm)
-
+- **pm10_std**: values are in **parts per million*** (ppm)
+- **pm25_std**: values are in **parts per million*** (ppm)
+- **pm100_std**: values are in **parts per million*** (ppm)
+- **pm10_env**: values are in **parts per million*** (ppm)
+- **pm25_env**: values are in **parts per million*** (ppm)
+- **pm100_env**: values are in **parts per million*** (ppm)
 
 ## The Unified Driver Abstraction Layer in Practice ##