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Air quality in Chelmsford
Air quality index (AQI) and PM2.5 air pollution in Chelmsford
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Chelmsford Air Quality Map
Real-time Chelmsford air pollution map
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Pollen
What is the pollen count in Chelmsford today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | None | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Chelmsford?
| Weather | Mist |
| Temperature | 55.4°F |
| Humidity | 84% |
| Wind | 13.8 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Boerne, Texas | 110 |
| 2 | Corpus Christi, Texas | 96 |
| 3 | Mecca, California | 92 |
| 4 | Palm Desert, California | 90 |
| 5 | Cedar Park, Texas | 87 |
| 6 | Georgetown, Texas | 87 |
| 7 | San Antonio, Texas | 87 |
| 8 | New Braunfels, Texas | 85 |
| 9 | Austin, Texas | 81 |
| 10 | Round Rock, Texas | 81 |
(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 | Chelmsford Station | 18 |
| 2 | North Chelmsford | 6 |
| 3 | Carlisle Street | 2 |
(local time)
SEE WORLD AQI RANKING
US AQI
19
live AQI index
Good
Overview
What is the current air quality in Chelmsford?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 19 US AQI | O3 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 1.5µg/m³ | |
| O3 | 46µg/m³ | |
| NO2 | 1.9µg/m³ | |
✓
PM2.5 concentration in Chelmsford air currently meets 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 |
|---|---|---|---|---|
| Thursday, May 16 | Good 23 AQI US |  | 69.8° 48.2° |  8.9 mp/h |
| Friday, May 17 | Good 25 AQI US |  | 59° 50° | 6.7 mp/h |
| Saturday, May 18 | Good 20 AQI US | | 57.2° 50° | 8.9 mp/h |
| Today | Good 19 AQI US | | 57.2° 50° | 8.9 mp/h |
| Monday, May 20 | Good 14 AQI US | | 75.2° 48.2° | 6.7 mp/h |
| Tuesday, May 21 | Good 45 AQI US | | 86° 53.6° | 8.9 mp/h |
| Wednesday, May 22 | Moderate 64 AQI US  | 40% | 89.6° 62.6° | 11.2 mp/h |
| Thursday, May 23 | Moderate 53 AQI US | 100% | 84.2° 59° | 11.2 mp/h |
| Friday, May 24 | Good 25 AQI US |  | 73.4° 50° | 11.2 mp/h |
| Saturday, May 25 | Good 13 AQI US | | 80.6° 50° | 6.7 mp/h |
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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