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MassDEP Ambient Air Quality Monitoring Network & Annual Plan

Learn about which pollutants and parameters the agency measures at specific monitoring sites, and why.

About the Monitoring Network & Plan

The Massachusetts Department of Environmental Protection (MassDEP) operates a network of 22 ambient air quality monitoring stations at locations across the state. The Wampanoag Tribe of Gay Head (Aquinnah) operates an ozone monitoring station on Martha's Vineyard. Each year, MassDEP is required to submit an Annual Ambient Air Quality Monitoring Network Plan to the U.S. Environmental Protection Agency (EPA). This document and its attachments are subject to a 30-day public comment period before MassDEP submits them to EPA for review and approval.

The annual network plan describes to EPA which pollutants and other parameters MassDEP measures at its various ambient air monitoring sites and why they are measured at those specific locations. It also describes changes in the network - including new and closed locations, and new and discontinued measurements at existing locations - since the last network plan, as well as proposed changes in the network over the next 18 months.

MassDEP also must conduct an assessment of the Massachusetts Ambient Air Quality Monitoring Network every five years to determine whether it meets the objectives defined in EPA regulations.

This page summarizes the annual network plan and five-year network assessment. See the full network plan plus attachments, and instructions for submitting comments.

Air Monitoring Network Map

Zoom in and click on the icons to learn about each monitoring station site across Massachusetts.

Monitoring Sites & Parameters Measured

Monitoring Sites O
3
C
O
S
O
2
N
O
x
N
O
y
P
b
M
E
T
P
M
10
P
M
2.5
B
A
M
P
A
M
S
T
O
X
I
C
S
B
C
S
P
E
C
I
M
P
R
O
V
E
Aquinnah - Wampanoag Tribal Site

                         
Boston - Kenmore                      
Boston - Harrison Avenue    
Boston - North End                        
Boston - Von Hillern Street                    
Brockton - Buckley Playground                        
Chelmsford - EPA NERL                            
Chicopee - Westover AFB                
Fairhaven - Hastings School                          
Fall River - Globe Street                      
Greenfield - Veterans Field                        
Haverhill - Consentino School                    
Lynn-Water Treatment Plant                
Milton - Blue Hill Observatory                        
Newburyport- Plum Island                    
Pittsfield - 78 Center Street                            
Pittsfield - 1 South Street                            
Springfield - Liberty Street                  
Truro - National Seashore                          
Uxbridge - Blackstone Heritage                          
Ware - Quabbin Summit            
Worcester - Airport                          
Worcester - Summer Street                  

LEGEND OF PARAMETER ACRONYMS
O3 Ozone
CO Carbon Monoxide
SO2 Sulfur Dioxide
NOx Nitric Oxide, including Nitrogen Dioxide
NOy Total Reactive Oxides of Nitrogen
Pb Lead
MET Meteorological Parameters
PM10 Particulate Matter (10 microns & smaller)
PM2.5 Fine Particles (2.5 microns & smaller)
BAM Beta Attenuation Monitor (Continuous Fine Particles)
PAMS Photochemical Assessment Monitoring Station
TOXICS Toxic Air Pollutants including Carbonyls (Aldehydes), Metals & VOCs
BC Black Carbon
SPEC Speciated Fine Particles
IMPROVE Visibility PM Speciation

Network Plan & Attachments

See Additional Resources below for the current Ambient Air Quality Monitoring Network Plan and attachments, and a link to Network Plans from previous years.

Additional Resources

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