Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Chelmsford
Air quality index (AQI) and PM2.5 air pollution in Chelmsford
204 people follow this city
Chelmsford Air Quality Map
Real-time Chelmsford air pollution map
AIR QUALITY DATA CONTRIBUTORS
3 Contributors
See all
Pollen
What is the pollen count in Chelmsford today?
 | Index | Very high | |
 | Tree pollen | Very high | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Chelmsford?
| Weather | Clear sky |
| Temperature | 64.4°F |
| Humidity | 70% |
| Wind | 3.4 mp/h |
| Pressure | 29.8 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Campo, California | 97 |
| 2 | Mecca, California | 88 |
| 3 | Lubbock, Texas | 83 |
| 4 | Pahrump, Nevada | 73 |
| 5 | Michigan City, Indiana | 72 |
| 6 | Corpus Christi, Texas | 67 |
| 7 | Beaver, Pennsylvania | 66 |
| 8 | Yucaipa, California | 65 |
| 9 | Baytown, Texas | 64 |
| 10 | Palm Desert, California | 64 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Chelmsford aqi ranking
Real-time Chelmsford air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | North Chelmsford | 43 |
| 2 | Carlisle Street | 37 |
| 3 | Chelmsford Station | 33 |
(local time)
SEE WORLD AQI RANKING
US AQI
40
live AQI index
Good
Overview
What is the current air quality in Chelmsford?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 40 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 7.3µg/m³ | |
!
PM2.5
x1.5
PM2.5 concentration in Chelmsford is currently 1.5 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Chelmsford?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Chelmsford air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Friday, May 31 | Good 32 AQI US |  | 78.8° 50° |  6.7 mp/h |
| Saturday, Jun 1 | Good 35 AQI US |  | 82.4° 48.2° | 6.7 mp/h |
| Sunday, Jun 2 | Good 36 AQI US |  | 82.4° 57.2° | 11.2 mp/h |
| Today | Good 40 AQI US | | 82.4° 57.2° | 11.2 mp/h |
| Tuesday, Jun 4 | Good 32 AQI US | | 77° 51.8° | 8.9 mp/h |
| Wednesday, Jun 5 | Good 46 AQI US |  30% | 80.6° 53.6° | 8.9 mp/h |
| Thursday, Jun 6 | Good 26 AQI US | 90% | 60.8° 57.2° | 6.7 mp/h |
| Friday, Jun 7 | Good 40 AQI US | 90% | 69.8° 57.2° | 4.5 mp/h |
| Saturday, Jun 8 | Moderate 58 AQI US  | 90% | 64.4° 53.6° | 8.9 mp/h |
| Sunday, Jun 9 | Moderate 54 AQI US | 40% | 68° 53.6° | 8.9 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Chelmsford air quality data attribution
Data validated and calibrated by IQAirWhere is the cleanest air quality in Chelmsford?
AQI US, Metric