Chelmsford
2 monitoring stations · readings from 46 to 47
Average AQI
Air quality in Chelmsford
Air quality in Chelmsford is currently 47 on the AQI scale, which falls in the Good band. That number is the average across every monitoring station reporting in Chelmsford right now.
We aggregate 2 stations across Chelmsford. Individual stations range from 46 at the cleanest to 47 at the worst, so conditions vary across Chelmsford — the local figure matters more than the average.
Chelmsford breaks down into 2 stations you can open individually. Of those listed below, Carlisle Street is reading highest at 47 and North Chelmsford lowest at 46.
Readings refresh hourly from the official monitoring networks we track. Conditions can still change quickly, so check back before planning time outdoors.
What to do at good levels
Outdoor activity
No restrictions. This is a good day for exercise, commuting on foot or bike, and time outside.
Sensitive groups
Children, older adults and people with asthma or heart conditions can go about their day as normal.
Indoor air
Open the windows. Outdoor air is currently cleaner than typical indoor air, so ventilating helps.
Stations in Chelmsford
About Chelmsford
Coordinates
42.619, -71.335
Centroid of monitored stations
Stations
2
Reporting in this area
Spread
46 – 47
Cleanest to worst station reading
Chelmsford air quality, answered
Chelmsford is currently reading an AQI of 47, which is Good. It is the average across 2 reporting stations.
No restrictions. This is a good day for exercise, commuting on foot or bike, and time outside. Children, older adults and people with asthma or heart conditions can go about their day as normal.
47 sits in the Good band of the air quality index. The index runs from 0 to 500, and the lower the number the cleaner the air.
We currently aggregate 2 stations in Chelmsford, reading between 46 and 47.
Of the stations currently listed for Chelmsford, Carlisle Street is reading highest at 47 (Good).
Hourly. We pull from the official monitoring networks that publish for this city, and this page refreshes on the same cadence.
See Chelmsford on the map.
Every station around it, live — or find out what today's reading means for you personally.