What is the PM10 level in Chelmsford, Essex at the moment?

The PM10 concentration in Chelmsford, Essex is 27.34 μg/m3 at the moment.

What is the sulfur dioxide (SO2) level in Chelmsford, Essex at the moment?

Currently, Chelmsford, Essex has a sulfur dioxide (SO2) concentration of 0.6 ppb.

What is the ozone (O3) level in Chelmsford, Essex at the moment?

The current ozone (O3) level in Chelmsford, Essex at the moment is 28.783 ppm.

What is the nitrogen dioxide (NO2) level in Chelmsford, Essex at the moment?

Nitrogen dioxide (NO2) level in Chelmsford, Essex at the moment is 12.103 ppb.

Live air quality index in Chelmsford, Essex today

Q: What is the PM2.5 level in Chelmsford, Essex at the moment?

PM2.5 levels in Chelmsford, Essex are currently 21.443 μg/m3.

Stay updated with real-time air quality in Chelmsford, Essex featuring accurate data on AQI, PM_2.5, PM₁₀, O₃, NO₂, SO₂, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.

Live AQI (Air Quality Index)

Moderate

Chelmsford, Essex

Last updated: ... (Local time)

Major air pollutants in Chelmsford, Essex

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

21.44 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

27.34 μg/m³

155

255

425

605+

Ozone (O₃)

28.78 ppb

201

201+

Sulfur Dioxide (SO₂)

0.60 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

12.10 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.09 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

Chelmsford, Essex

Get Live Pollen Counts

Chelmsford, Essex

Scroll To Air Quality Map

Track live Chelmsford, Essex air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-08T22:00:00.000Z	66 \| moderate	16.754 \| fine	30.981 \| good	23.331 \| good	0.562 \| good	8.308 \| good	0.15 \| good
2026-03-08T23:00:00.000Z	38 \| good	6.7 \| good	30.183 \| good	22.26 \| good	0.487 \| good	8.102 \| good	0.113 \| good
2026-03-09T00:00:00.000Z	38 \| good	7.4 \| good	33.031 \| good	19.636 \| good	0.498 \| good	10.978 \| good	0.735 \| good
2026-03-09T01:00:00.000Z	90 \| moderate	30.289 \| fine	43.288 \| good	18.945 \| good	0.554 \| good	9.911 \| good	0.646 \| good
2026-03-09T02:00:00.000Z	97 \| moderate	33.7 \| fine	40.653 \| good	17.174 \| good	0.604 \| good	9.228 \| good	0.67 \| good
2026-03-09T03:00:00.000Z	71 \| moderate	19.754 \| fine	39.658 \| good	20.619 \| good	0.635 \| good	7.347 \| good	0.538 \| good
2026-03-09T04:00:00.000Z	99 \| moderate	34.743 \| fine	46.353 \| good	20.288 \| good	0.609 \| good	7.559 \| good	0.495 \| good
2026-03-09T05:00:00.000Z	88 \| moderate	28.927 \| fine	72.91 \| fine	19.216 \| good	0.593 \| good	7.284 \| good	0.462 \| good
2026-03-09T06:00:00.000Z	92 \| moderate	30.945 \| fine	47.118 \| good	18.108 \| good	0.495 \| good	11.726 \| good	0.457 \| good
2026-03-09T07:00:00.000Z	84 \| moderate	21.975 \| fine	121.034 \| fine	20.19 \| good	0.555 \| good	5.912 \| good	0.072 \| good
2026-03-09T08:00:00.000Z	102 \| sensitive	35.757 \| moderate	40.775 \| good	16.366 \| good	0.44 \| good	8.205 \| good	0.075 \| good
2026-03-09T09:00:00.000Z	97 \| moderate	33.701 \| fine	41.188 \| good	16.201 \| good	0.437 \| good	7.386 \| good	0.06 \| good
2026-03-09T10:00:00.000Z	92 \| moderate	31.095 \| fine	59.212 \| fine	17.82 \| good	0.441 \| good	10.204 \| good	0.052 \| good
2026-03-09T11:00:00.000Z	94 \| moderate	32.315 \| fine	131.26 \| fine	13.537 \| good	0.513 \| good	7.477 \| good	0.052 \| good
2026-03-09T12:00:00.000Z	99 \| moderate	34.9 \| fine	95.54 \| fine	14.967 \| good	0.504 \| good	9.755 \| good	0.027 \| good
2026-03-09T13:00:00.000Z	97 \| moderate	34.466 \| fine	45.6 \| good	18.069 \| good	0.633 \| good	7.982 \| good	0.03 \| good
2026-03-09T14:00:00.000Z	97 \| moderate	33.983 \| fine	47.961 \| good	14.634 \| good	0.697 \| good	5.943 \| good	0.028 \| good
2026-03-09T15:00:00.000Z	92 \| moderate	30.905 \| fine	33.009 \| good	16.724 \| good	0.86 \| good	13.798 \| good	0.027 \| good
2026-03-09T16:00:00.000Z	107 \| sensitive	37.889 \| moderate	85.531 \| fine	20.839 \| good	0.614 \| good	8.106 \| good	0.028 \| good
2026-03-09T17:00:00.000Z	105 \| sensitive	36.702 \| moderate	111.033 \| fine	16.736 \| good	0.508 \| good	12.072 \| good	0.031 \| good
2026-03-09T18:00:00.000Z	127 \| sensitive	45.659 \| moderate	174.421 \| moderate	16.9 \| good	0.662 \| good	8.83 \| good	0.038 \| good
2026-03-09T19:00:00.000Z	121 \| sensitive	32.049 \| fine	194.779 \| moderate	14.159 \| good	0.514 \| good	10.019 \| good	0.061 \| good
2026-03-09T20:00:00.000Z	107 \| sensitive	37.536 \| moderate	71.904 \| fine	15.804 \| good	0.511 \| good	10.63 \| good	0.062 \| good
2026-03-09T21:00:00.000Z	105 \| sensitive	36.55 \| moderate	103.249 \| fine	17.881 \| good	0.63 \| good	7.35 \| good	0.064 \| good
2026-03-09T22:00:00.000Z	82 \| moderate	26.021 \| fine	37.424 \| good	20.889 \| good	0.63 \| good	13.223 \| good	0.086 \| good
2026-03-09T23:00:00.000Z	102 \| sensitive	36.134 \| moderate	44.499 \| good	14.59 \| good	0.841 \| good	9.282 \| good	0.117 \| good
2026-03-10T00:00:00.000Z	90 \| moderate	30.061 \| fine	64.39 \| fine	10.603 \| good	1.007 \| good	16.836 \| good	0.838 \| good
2026-03-10T01:00:00.000Z	71 \| moderate	19.651 \| fine	46.729 \| good	9.137 \| good	0.894 \| good	12.866 \| good	0.833 \| good
2026-03-10T02:00:00.000Z	86 \| moderate	28.285 \| fine	37.422 \| good	10.764 \| good	0.668 \| good	12.51 \| good	0.802 \| good
2026-03-10T03:00:00.000Z	84 \| moderate	26.515 \| fine	40.59 \| good	16.811 \| good	0.611 \| good	11.69 \| good	0.71 \| good
2026-03-10T04:00:00.000Z	38 \| good	6.9 \| good	31.781 \| good	17.507 \| good	0.607 \| good	14.216 \| good	0.651 \| good
2026-03-10T05:00:00.000Z	33 \| good	6.4 \| good	29.763 \| good	13.139 \| good	0.604 \| good	7.713 \| good	0.52 \| good
2026-03-10T06:00:00.000Z	73 \| moderate	20.977 \| fine	37.312 \| good	19.257 \| good	0.717 \| good	5.708 \| good	0.548 \| good
2026-03-10T07:00:00.000Z	86 \| moderate	27.823 \| fine	51.433 \| good	14.289 \| good	0.52 \| good	14.391 \| good	0.078 \| good
2026-03-10T08:00:00.000Z	73 \| moderate	21.189 \| fine	29.086 \| good	15.438 \| good	0.518 \| good	11.212 \| good	0.083 \| good
2026-03-10T09:00:00.000Z	38 \| good	6.7 \| good	26.94 \| good	16.023 \| good	0.659 \| good	12.045 \| good	0.069 \| good
2026-03-10T10:00:00.000Z	27 \| good	5 \| good	23.82 \| good	16.552 \| good	0.86 \| good	15.654 \| good	0.047 \| good
2026-03-10T11:00:00.000Z	75 \| moderate	21.632 \| fine	54.703 \| good	16.143 \| good	0.886 \| good	15.028 \| good	0.031 \| good
2026-03-10T12:00:00.000Z	88 \| moderate	28.59 \| fine	29.155 \| good	20.155 \| good	0.814 \| good	12.754 \| good	0.022 \| good
2026-03-10T13:00:00.000Z	69 \| moderate	18.62 \| fine	44.306 \| good	20.841 \| good	0.811 \| good	14.253 \| good	0.022 \| good
2026-03-10T14:00:00.000Z	79 \| moderate	24.176 \| fine	111.839 \| fine	18.138 \| good	0.929 \| good	11.823 \| good	0.025 \| good
2026-03-10T15:00:00.000Z	77 \| moderate	23.377 \| fine	65.678 \| fine	21.649 \| good	0.75 \| good	9.11 \| good	0.025 \| good
2026-03-10T16:00:00.000Z	79 \| moderate	23.829 \| fine	26.945 \| good	23.777 \| good	0.871 \| good	12.196 \| good	0.025 \| good
2026-03-10T17:00:00.000Z	81 \| moderate	24.888 \| fine	76.138 \| fine	24.99 \| good	0.869 \| good	11.766 \| good	0.035 \| good
2026-03-10T18:00:00.000Z	77 \| moderate	22.56 \| fine	26.599 \| good	22.693 \| good	0.955 \| good	7.057 \| good	0.047 \| good
2026-03-10T19:00:00.000Z	77 \| moderate	22.748 \| fine	27.926 \| good	22.975 \| good	0.731 \| good	11.826 \| good	0.055 \| good
2026-03-10T20:00:00.000Z	73 \| moderate	21.443 \| fine	27.34 \| good	28.783 \| good	0.6 \| good	12.103 \| good	0.088 \| good
2026-03-10T21:00:00.000Z	73 \| moderate	20.751 \| fine	68.107 \| fine	28.724 \| good	0.673 \| good	8.826 \| good	0.115 \| good
2026-03-10T21:00:00.000Z	73 \| moderate	21.443 \| fine	27.34 \| good	28.783 \| good	0.6 \| good	12.103 \| good	0.088 \| good
2026-03-10T22:00:00.000Z	33 \| good	6.3 \| good	10.011 \| good	35.043 \| good	0.348 \| good	4.474 \| good	0.134 \| good
2026-03-10T23:00:00.000Z	33 \| good	5.565 \| good	8.02 \| good	34.094 \| good	0.252 \| good	3.347 \| good	0.13 \| good
2026-03-11T00:00:00.000Z	34 \| good	3.939 \| good	5.935 \| good	36.796 \| good	0.164 \| good	2.531 \| good	0.131 \| good
2026-03-11T01:00:00.000Z	34 \| good	2.531 \| good	4.197 \| good	37.383 \| good	0.096 \| good	2.065 \| good	0.128 \| good
2026-03-11T02:00:00.000Z	35 \| good	2.189 \| good	3.4 \| good	38.172 \| good	0.084 \| good	1.71 \| good	0.127 \| good
2026-03-11T03:00:00.000Z	36 \| good	1.777 \| good	2.843 \| good	39.156 \| good	0.088 \| good	1.579 \| good	0.126 \| good
2026-03-11T04:00:00.000Z	36 \| good	1.531 \| good	2.949 \| good	38.917 \| good	0.093 \| good	1.636 \| good	0.127 \| good
2026-03-11T05:00:00.000Z	34 \| good	1.708 \| good	3.148 \| good	37.308 \| good	0.125 \| good	1.961 \| good	0.127 \| good
2026-03-11T06:00:00.000Z	32 \| good	3.076 \| good	5.009 \| good	35.153 \| good	0.181 \| good	2.364 \| good	0.126 \| good
2026-03-11T07:00:00.000Z	32 \| good	4.104 \| good	7.594 \| good	34.851 \| good	0.263 \| good	2.991 \| good	0.128 \| good
2026-03-11T08:00:00.000Z	33 \| good	4.769 \| good	10.293 \| good	35.61 \| good	0.335 \| good	3.584 \| good	0.135 \| good
2026-03-11T09:00:00.000Z	33 \| good	4.7 \| good	11.787 \| good	35.953 \| good	0.297 \| good	3.049 \| good	0.141 \| good
2026-03-11T10:00:00.000Z	33 \| good	4.201 \| good	9.866 \| good	36.457 \| good	0.296 \| good	2.373 \| good	0.147 \| good
2026-03-11T11:00:00.000Z	36 \| good	3.575 \| good	9.66 \| good	38.613 \| good	0.246 \| good	2.067 \| good	0.148 \| good
2026-03-11T12:00:00.000Z	38 \| good	2.96 \| good	8.686 \| good	40.79 \| good	0.218 \| good	1.573 \| good	0.148 \| good
2026-03-11T13:00:00.000Z	41 \| good	2.479 \| good	8.005 \| good	43.721 \| good	0.205 \| good	1.386 \| good	0.145 \| good
2026-03-11T14:00:00.000Z	42 \| good	2.251 \| good	7.416 \| good	45.07 \| good	0.19 \| good	1.364 \| good	0.144 \| good
2026-03-11T15:00:00.000Z	42 \| good	2.271 \| good	6.554 \| good	44.746 \| good	0.193 \| good	1.501 \| good	0.144 \| good
2026-03-11T16:00:00.000Z	40 \| good	2.691 \| good	6.02 \| good	43.139 \| good	0.188 \| good	2.15 \| good	0.142 \| good
2026-03-11T17:00:00.000Z	39 \| good	3.321 \| good	7.278 \| good	42.313 \| good	0.222 \| good	3.628 \| good	0.145 \| good
2026-03-11T18:00:00.000Z	36 \| good	4.425 \| good	8.533 \| good	38.661 \| good	0.299 \| good	5.569 \| good	0.15 \| good
2026-03-11T19:00:00.000Z	33 \| good	5.824 \| good	10.251 \| good	32.471 \| good	0.483 \| good	7.533 \| good	0.16 \| good
2026-03-11T20:00:00.000Z	38 \| good	7.173 \| good	14.177 \| good	29.674 \| good	0.722 \| good	12.247 \| good	0.169 \| good
2026-03-11T21:00:00.000Z	49 \| good	8.518 \| good	13.606 \| good	30.377 \| good	0.752 \| good	11.739 \| good	0.17 \| good
2026-03-11T22:00:00.000Z	44 \| good	8.485 \| good	14.429 \| good	33.021 \| good	0.708 \| good	10.501 \| good	0.16 \| good
2026-03-11T23:00:00.000Z	44 \| good	8.222 \| good	13.832 \| good	33.673 \| good	0.648 \| good	9.504 \| good	0.157 \| good
2026-03-12T00:00:00.000Z	38 \| good	6.988 \| good	13.201 \| good	34.719 \| good	0.554 \| good	7.666 \| good	0.153 \| good
2026-03-12T01:00:00.000Z	33 \| good	6.41 \| good	13.022 \| good	34.301 \| good	0.461 \| good	5.866 \| good	0.15 \| good
2026-03-12T02:00:00.000Z	33 \| good	5.959 \| good	12.09 \| good	35.296 \| good	0.371 \| good	3.988 \| good	0.145 \| good
2026-03-12T03:00:00.000Z	34 \| good	5.145 \| good	11.904 \| good	36.894 \| good	0.338 \| good	2.775 \| good	0.143 \| good
2026-03-12T04:00:00.000Z	36 \| good	4.331 \| good	10.159 \| good	38.809 \| good	0.326 \| good	1.951 \| good	0.136 \| good
2026-03-12T05:00:00.000Z	39 \| good	4.526 \| good	10.063 \| good	41.571 \| good	0.25 \| good	1.921 \| good	0.133 \| good
2026-03-12T06:00:00.000Z	40 \| good	4.159 \| good	10.248 \| good	43.14 \| good	0.242 \| good	2.014 \| good	0.132 \| good
2026-03-12T07:00:00.000Z	41 \| good	4.048 \| good	10.795 \| good	43.95 \| good	0.267 \| good	2.67 \| good	0.133 \| good
2026-03-12T08:00:00.000Z	40 \| good	4.065 \| good	11.697 \| good	42.992 \| good	0.315 \| good	3.63 \| good	0.136 \| good
2026-03-12T09:00:00.000Z	39 \| good	4.055 \| good	12.697 \| good	42.366 \| good	0.337 \| good	3.861 \| good	0.135 \| good
2026-03-12T10:00:00.000Z	41 \| good	3.965 \| good	12.175 \| good	44.011 \| good	0.298 \| good	3.532 \| good	0.133 \| good
2026-03-12T11:00:00.000Z	41 \| good	3.914 \| good	10.46 \| good	44.059 \| good	0.258 \| good	3.162 \| good	0.131 \| good
2026-03-12T12:00:00.000Z	43 \| good	3.939 \| good	10.315 \| good	46.159 \| good	0.218 \| good	2.649 \| good	0.129 \| good
2026-03-12T13:00:00.000Z	42 \| good	3.904 \| good	10.243 \| good	44.868 \| good	0.19 \| good	2.537 \| good	0.128 \| good
2026-03-12T14:00:00.000Z	43 \| good	4.199 \| good	10.805 \| good	45.766 \| good	0.161 \| good	2.4 \| good	0.128 \| good
2026-03-12T15:00:00.000Z	43 \| good	4.395 \| good	9.827 \| good	46.36 \| good	0.148 \| good	2.518 \| good	0.126 \| good
2026-03-12T16:00:00.000Z	42 \| good	4.378 \| good	9.506 \| good	45.489 \| good	0.149 \| good	2.811 \| good	0.126 \| good
2026-03-12T17:00:00.000Z	41 \| good	4.337 \| good	8.698 \| good	43.945 \| good	0.16 \| good	3.285 \| good	0.124 \| good
2026-03-12T18:00:00.000Z	39 \| good	4.187 \| good	8.121 \| good	42.105 \| good	0.192 \| good	3.561 \| good	0.124 \| good
2026-03-12T19:00:00.000Z	39 \| good	3.81 \| good	7.761 \| good	41.542 \| good	0.191 \| good	3.135 \| good	0.121 \| good
2026-03-12T20:00:00.000Z	38 \| good	3.555 \| good	6.987 \| good	41.481 \| good	0.163 \| good	2.793 \| good	0.117 \| good
2026-03-12T21:00:00.000Z	38 \| good	3.375 \| good	6.632 \| good	40.769 \| good	0.162 \| good	2.713 \| good	0.115 \| good

Chelmsford

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Chelmsford, Essex air quality map: Stay updated on AQI near you

0.07ppm

How accurate is Essex, UK air quality data?

Air quality and pollutant data for Essex, UK are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for Chelmsford, Essex?

The air quality information for Chelmsford, Essex is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Chelmsford, Essex at its worst?

In the past 24 hours, the air quality in Chelmsford, Essex was at its worst at 09:00:00 on 2026-03-09.

When did Chelmsford, Essex experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Chelmsford, Essex was observed at 10:00:00 on 2026-03-10.

What is the AQI in Chelmsford, Essex right now?

As of now, the AQI in Chelmsford, Essex is 73, indicating Moderate conditions.

What is the most common type of pollution in Chelmsford, Essex?

Chelmsford, Essex air has the highest levels of PM2.5.

What should I do in case of poor air quality in Chelmsford, Essex?

Poor air quality in Chelmsford, Essex means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in Chelmsford, Essex at the moment?

PM_2.5 levels in Chelmsford, Essex are currently 21.443 μg/m³.

What is the PM₁₀ level in Chelmsford, Essex at the moment?

The PM₁₀ concentration in Chelmsford, Essex is 27.34 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Chelmsford, Essex at the moment?

The current carbon monoxide (CO) concentration in Chelmsford, Essex is 0.088 ppm.

What is the sulfur dioxide (SO₂) level in Chelmsford, Essex at the moment?

Currently, Chelmsford, Essex has a sulfur dioxide (SO₂) concentration of 0.6 ppb.

What is the ozone (O₃) level in Chelmsford, Essex at the moment?

The current ozone (O₃) level in Chelmsford, Essex at the moment is 28.783 ppm.

What is the nitrogen dioxide (NO₂) level in Chelmsford, Essex at the moment?

Nitrogen dioxide (NO₂) level in Chelmsford, Essex at the moment is 12.103 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-08T22:00:00.000Z	66 \| moderate	16.754 \| fine	30.981 \| good	23.331 \| good	0.562 \| good	8.308 \| good	0.15 \| good
2026-03-08T23:00:00.000Z	38 \| good	6.7 \| good	30.183 \| good	22.26 \| good	0.487 \| good	8.102 \| good	0.113 \| good
2026-03-09T00:00:00.000Z	38 \| good	7.4 \| good	33.031 \| good	19.636 \| good	0.498 \| good	10.978 \| good	0.735 \| good
2026-03-09T01:00:00.000Z	90 \| moderate	30.289 \| fine	43.288 \| good	18.945 \| good	0.554 \| good	9.911 \| good	0.646 \| good
2026-03-09T02:00:00.000Z	97 \| moderate	33.7 \| fine	40.653 \| good	17.174 \| good	0.604 \| good	9.228 \| good	0.67 \| good
2026-03-09T03:00:00.000Z	71 \| moderate	19.754 \| fine	39.658 \| good	20.619 \| good	0.635 \| good	7.347 \| good	0.538 \| good
2026-03-09T04:00:00.000Z	99 \| moderate	34.743 \| fine	46.353 \| good	20.288 \| good	0.609 \| good	7.559 \| good	0.495 \| good
2026-03-09T05:00:00.000Z	88 \| moderate	28.927 \| fine	72.91 \| fine	19.216 \| good	0.593 \| good	7.284 \| good	0.462 \| good
2026-03-09T06:00:00.000Z	92 \| moderate	30.945 \| fine	47.118 \| good	18.108 \| good	0.495 \| good	11.726 \| good	0.457 \| good
2026-03-09T07:00:00.000Z	84 \| moderate	21.975 \| fine	121.034 \| fine	20.19 \| good	0.555 \| good	5.912 \| good	0.072 \| good
2026-03-09T08:00:00.000Z	102 \| sensitive	35.757 \| moderate	40.775 \| good	16.366 \| good	0.44 \| good	8.205 \| good	0.075 \| good
2026-03-09T09:00:00.000Z	97 \| moderate	33.701 \| fine	41.188 \| good	16.201 \| good	0.437 \| good	7.386 \| good	0.06 \| good
2026-03-09T10:00:00.000Z	92 \| moderate	31.095 \| fine	59.212 \| fine	17.82 \| good	0.441 \| good	10.204 \| good	0.052 \| good
2026-03-09T11:00:00.000Z	94 \| moderate	32.315 \| fine	131.26 \| fine	13.537 \| good	0.513 \| good	7.477 \| good	0.052 \| good
2026-03-09T12:00:00.000Z	99 \| moderate	34.9 \| fine	95.54 \| fine	14.967 \| good	0.504 \| good	9.755 \| good	0.027 \| good
2026-03-09T13:00:00.000Z	97 \| moderate	34.466 \| fine	45.6 \| good	18.069 \| good	0.633 \| good	7.982 \| good	0.03 \| good
2026-03-09T14:00:00.000Z	97 \| moderate	33.983 \| fine	47.961 \| good	14.634 \| good	0.697 \| good	5.943 \| good	0.028 \| good
2026-03-09T15:00:00.000Z	92 \| moderate	30.905 \| fine	33.009 \| good	16.724 \| good	0.86 \| good	13.798 \| good	0.027 \| good
2026-03-09T16:00:00.000Z	107 \| sensitive	37.889 \| moderate	85.531 \| fine	20.839 \| good	0.614 \| good	8.106 \| good	0.028 \| good
2026-03-09T17:00:00.000Z	105 \| sensitive	36.702 \| moderate	111.033 \| fine	16.736 \| good	0.508 \| good	12.072 \| good	0.031 \| good
2026-03-09T18:00:00.000Z	127 \| sensitive	45.659 \| moderate	174.421 \| moderate	16.9 \| good	0.662 \| good	8.83 \| good	0.038 \| good
2026-03-09T19:00:00.000Z	121 \| sensitive	32.049 \| fine	194.779 \| moderate	14.159 \| good	0.514 \| good	10.019 \| good	0.061 \| good
2026-03-09T20:00:00.000Z	107 \| sensitive	37.536 \| moderate	71.904 \| fine	15.804 \| good	0.511 \| good	10.63 \| good	0.062 \| good
2026-03-09T21:00:00.000Z	105 \| sensitive	36.55 \| moderate	103.249 \| fine	17.881 \| good	0.63 \| good	7.35 \| good	0.064 \| good
2026-03-09T22:00:00.000Z	82 \| moderate	26.021 \| fine	37.424 \| good	20.889 \| good	0.63 \| good	13.223 \| good	0.086 \| good
2026-03-09T23:00:00.000Z	102 \| sensitive	36.134 \| moderate	44.499 \| good	14.59 \| good	0.841 \| good	9.282 \| good	0.117 \| good
2026-03-10T00:00:00.000Z	90 \| moderate	30.061 \| fine	64.39 \| fine	10.603 \| good	1.007 \| good	16.836 \| good	0.838 \| good
2026-03-10T01:00:00.000Z	71 \| moderate	19.651 \| fine	46.729 \| good	9.137 \| good	0.894 \| good	12.866 \| good	0.833 \| good
2026-03-10T02:00:00.000Z	86 \| moderate	28.285 \| fine	37.422 \| good	10.764 \| good	0.668 \| good	12.51 \| good	0.802 \| good
2026-03-10T03:00:00.000Z	84 \| moderate	26.515 \| fine	40.59 \| good	16.811 \| good	0.611 \| good	11.69 \| good	0.71 \| good
2026-03-10T04:00:00.000Z	38 \| good	6.9 \| good	31.781 \| good	17.507 \| good	0.607 \| good	14.216 \| good	0.651 \| good
2026-03-10T05:00:00.000Z	33 \| good	6.4 \| good	29.763 \| good	13.139 \| good	0.604 \| good	7.713 \| good	0.52 \| good
2026-03-10T06:00:00.000Z	73 \| moderate	20.977 \| fine	37.312 \| good	19.257 \| good	0.717 \| good	5.708 \| good	0.548 \| good
2026-03-10T07:00:00.000Z	86 \| moderate	27.823 \| fine	51.433 \| good	14.289 \| good	0.52 \| good	14.391 \| good	0.078 \| good
2026-03-10T08:00:00.000Z	73 \| moderate	21.189 \| fine	29.086 \| good	15.438 \| good	0.518 \| good	11.212 \| good	0.083 \| good
2026-03-10T09:00:00.000Z	38 \| good	6.7 \| good	26.94 \| good	16.023 \| good	0.659 \| good	12.045 \| good	0.069 \| good
2026-03-10T10:00:00.000Z	27 \| good	5 \| good	23.82 \| good	16.552 \| good	0.86 \| good	15.654 \| good	0.047 \| good
2026-03-10T11:00:00.000Z	75 \| moderate	21.632 \| fine	54.703 \| good	16.143 \| good	0.886 \| good	15.028 \| good	0.031 \| good
2026-03-10T12:00:00.000Z	88 \| moderate	28.59 \| fine	29.155 \| good	20.155 \| good	0.814 \| good	12.754 \| good	0.022 \| good
2026-03-10T13:00:00.000Z	69 \| moderate	18.62 \| fine	44.306 \| good	20.841 \| good	0.811 \| good	14.253 \| good	0.022 \| good
2026-03-10T14:00:00.000Z	79 \| moderate	24.176 \| fine	111.839 \| fine	18.138 \| good	0.929 \| good	11.823 \| good	0.025 \| good
2026-03-10T15:00:00.000Z	77 \| moderate	23.377 \| fine	65.678 \| fine	21.649 \| good	0.75 \| good	9.11 \| good	0.025 \| good
2026-03-10T16:00:00.000Z	79 \| moderate	23.829 \| fine	26.945 \| good	23.777 \| good	0.871 \| good	12.196 \| good	0.025 \| good
2026-03-10T17:00:00.000Z	81 \| moderate	24.888 \| fine	76.138 \| fine	24.99 \| good	0.869 \| good	11.766 \| good	0.035 \| good
2026-03-10T18:00:00.000Z	77 \| moderate	22.56 \| fine	26.599 \| good	22.693 \| good	0.955 \| good	7.057 \| good	0.047 \| good
2026-03-10T19:00:00.000Z	77 \| moderate	22.748 \| fine	27.926 \| good	22.975 \| good	0.731 \| good	11.826 \| good	0.055 \| good
2026-03-10T20:00:00.000Z	73 \| moderate	21.443 \| fine	27.34 \| good	28.783 \| good	0.6 \| good	12.103 \| good	0.088 \| good
2026-03-10T21:00:00.000Z	73 \| moderate	20.751 \| fine	68.107 \| fine	28.724 \| good	0.673 \| good	8.826 \| good	0.115 \| good
2026-03-10T21:00:00.000Z	73 \| moderate	21.443 \| fine	27.34 \| good	28.783 \| good	0.6 \| good	12.103 \| good	0.088 \| good
2026-03-10T22:00:00.000Z	33 \| good	6.3 \| good	10.011 \| good	35.043 \| good	0.348 \| good	4.474 \| good	0.134 \| good
2026-03-10T23:00:00.000Z	33 \| good	5.565 \| good	8.02 \| good	34.094 \| good	0.252 \| good	3.347 \| good	0.13 \| good
2026-03-11T00:00:00.000Z	34 \| good	3.939 \| good	5.935 \| good	36.796 \| good	0.164 \| good	2.531 \| good	0.131 \| good
2026-03-11T01:00:00.000Z	34 \| good	2.531 \| good	4.197 \| good	37.383 \| good	0.096 \| good	2.065 \| good	0.128 \| good
2026-03-11T02:00:00.000Z	35 \| good	2.189 \| good	3.4 \| good	38.172 \| good	0.084 \| good	1.71 \| good	0.127 \| good
2026-03-11T03:00:00.000Z	36 \| good	1.777 \| good	2.843 \| good	39.156 \| good	0.088 \| good	1.579 \| good	0.126 \| good
2026-03-11T04:00:00.000Z	36 \| good	1.531 \| good	2.949 \| good	38.917 \| good	0.093 \| good	1.636 \| good	0.127 \| good
2026-03-11T05:00:00.000Z	34 \| good	1.708 \| good	3.148 \| good	37.308 \| good	0.125 \| good	1.961 \| good	0.127 \| good
2026-03-11T06:00:00.000Z	32 \| good	3.076 \| good	5.009 \| good	35.153 \| good	0.181 \| good	2.364 \| good	0.126 \| good
2026-03-11T07:00:00.000Z	32 \| good	4.104 \| good	7.594 \| good	34.851 \| good	0.263 \| good	2.991 \| good	0.128 \| good
2026-03-11T08:00:00.000Z	33 \| good	4.769 \| good	10.293 \| good	35.61 \| good	0.335 \| good	3.584 \| good	0.135 \| good
2026-03-11T09:00:00.000Z	33 \| good	4.7 \| good	11.787 \| good	35.953 \| good	0.297 \| good	3.049 \| good	0.141 \| good
2026-03-11T10:00:00.000Z	33 \| good	4.201 \| good	9.866 \| good	36.457 \| good	0.296 \| good	2.373 \| good	0.147 \| good
2026-03-11T11:00:00.000Z	36 \| good	3.575 \| good	9.66 \| good	38.613 \| good	0.246 \| good	2.067 \| good	0.148 \| good
2026-03-11T12:00:00.000Z	38 \| good	2.96 \| good	8.686 \| good	40.79 \| good	0.218 \| good	1.573 \| good	0.148 \| good
2026-03-11T13:00:00.000Z	41 \| good	2.479 \| good	8.005 \| good	43.721 \| good	0.205 \| good	1.386 \| good	0.145 \| good
2026-03-11T14:00:00.000Z	42 \| good	2.251 \| good	7.416 \| good	45.07 \| good	0.19 \| good	1.364 \| good	0.144 \| good
2026-03-11T15:00:00.000Z	42 \| good	2.271 \| good	6.554 \| good	44.746 \| good	0.193 \| good	1.501 \| good	0.144 \| good
2026-03-11T16:00:00.000Z	40 \| good	2.691 \| good	6.02 \| good	43.139 \| good	0.188 \| good	2.15 \| good	0.142 \| good
2026-03-11T17:00:00.000Z	39 \| good	3.321 \| good	7.278 \| good	42.313 \| good	0.222 \| good	3.628 \| good	0.145 \| good
2026-03-11T18:00:00.000Z	36 \| good	4.425 \| good	8.533 \| good	38.661 \| good	0.299 \| good	5.569 \| good	0.15 \| good
2026-03-11T19:00:00.000Z	33 \| good	5.824 \| good	10.251 \| good	32.471 \| good	0.483 \| good	7.533 \| good	0.16 \| good
2026-03-11T20:00:00.000Z	38 \| good	7.173 \| good	14.177 \| good	29.674 \| good	0.722 \| good	12.247 \| good	0.169 \| good
2026-03-11T21:00:00.000Z	49 \| good	8.518 \| good	13.606 \| good	30.377 \| good	0.752 \| good	11.739 \| good	0.17 \| good
2026-03-11T22:00:00.000Z	44 \| good	8.485 \| good	14.429 \| good	33.021 \| good	0.708 \| good	10.501 \| good	0.16 \| good
2026-03-11T23:00:00.000Z	44 \| good	8.222 \| good	13.832 \| good	33.673 \| good	0.648 \| good	9.504 \| good	0.157 \| good
2026-03-12T00:00:00.000Z	38 \| good	6.988 \| good	13.201 \| good	34.719 \| good	0.554 \| good	7.666 \| good	0.153 \| good
2026-03-12T01:00:00.000Z	33 \| good	6.41 \| good	13.022 \| good	34.301 \| good	0.461 \| good	5.866 \| good	0.15 \| good
2026-03-12T02:00:00.000Z	33 \| good	5.959 \| good	12.09 \| good	35.296 \| good	0.371 \| good	3.988 \| good	0.145 \| good
2026-03-12T03:00:00.000Z	34 \| good	5.145 \| good	11.904 \| good	36.894 \| good	0.338 \| good	2.775 \| good	0.143 \| good
2026-03-12T04:00:00.000Z	36 \| good	4.331 \| good	10.159 \| good	38.809 \| good	0.326 \| good	1.951 \| good	0.136 \| good
2026-03-12T05:00:00.000Z	39 \| good	4.526 \| good	10.063 \| good	41.571 \| good	0.25 \| good	1.921 \| good	0.133 \| good
2026-03-12T06:00:00.000Z	40 \| good	4.159 \| good	10.248 \| good	43.14 \| good	0.242 \| good	2.014 \| good	0.132 \| good
2026-03-12T07:00:00.000Z	41 \| good	4.048 \| good	10.795 \| good	43.95 \| good	0.267 \| good	2.67 \| good	0.133 \| good
2026-03-12T08:00:00.000Z	40 \| good	4.065 \| good	11.697 \| good	42.992 \| good	0.315 \| good	3.63 \| good	0.136 \| good
2026-03-12T09:00:00.000Z	39 \| good	4.055 \| good	12.697 \| good	42.366 \| good	0.337 \| good	3.861 \| good	0.135 \| good
2026-03-12T10:00:00.000Z	41 \| good	3.965 \| good	12.175 \| good	44.011 \| good	0.298 \| good	3.532 \| good	0.133 \| good
2026-03-12T11:00:00.000Z	41 \| good	3.914 \| good	10.46 \| good	44.059 \| good	0.258 \| good	3.162 \| good	0.131 \| good
2026-03-12T12:00:00.000Z	43 \| good	3.939 \| good	10.315 \| good	46.159 \| good	0.218 \| good	2.649 \| good	0.129 \| good
2026-03-12T13:00:00.000Z	42 \| good	3.904 \| good	10.243 \| good	44.868 \| good	0.19 \| good	2.537 \| good	0.128 \| good
2026-03-12T14:00:00.000Z	43 \| good	4.199 \| good	10.805 \| good	45.766 \| good	0.161 \| good	2.4 \| good	0.128 \| good
2026-03-12T15:00:00.000Z	43 \| good	4.395 \| good	9.827 \| good	46.36 \| good	0.148 \| good	2.518 \| good	0.126 \| good
2026-03-12T16:00:00.000Z	42 \| good	4.378 \| good	9.506 \| good	45.489 \| good	0.149 \| good	2.811 \| good	0.126 \| good
2026-03-12T17:00:00.000Z	41 \| good	4.337 \| good	8.698 \| good	43.945 \| good	0.16 \| good	3.285 \| good	0.124 \| good
2026-03-12T18:00:00.000Z	39 \| good	4.187 \| good	8.121 \| good	42.105 \| good	0.192 \| good	3.561 \| good	0.124 \| good
2026-03-12T19:00:00.000Z	39 \| good	3.81 \| good	7.761 \| good	41.542 \| good	0.191 \| good	3.135 \| good	0.121 \| good
2026-03-12T20:00:00.000Z	38 \| good	3.555 \| good	6.987 \| good	41.481 \| good	0.163 \| good	2.793 \| good	0.117 \| good
2026-03-12T21:00:00.000Z	38 \| good	3.375 \| good	6.632 \| good	40.769 \| good	0.162 \| good	2.713 \| good	0.115 \| good

Live air quality index in Chelmsford, Essex today

Major air pollutants in Chelmsford, Essex

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Chelmsford, Essex air quality forecast and history

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Chelmsford, Essex air quality map: Stay updated on AQI near you

Air quality in nearby cities

Billericay, Essex

Witham, Essex

Maldon, Essex

South Woodham Ferrers, Essex

Wickford, Essex

Brentwood, Essex

How accurate is Essex, UK air quality data?

Air quality levels in UK

Frequently asked questions

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What is the PM2.5 level in Chelmsford, Essex at the moment?

What is the PM10 level in Chelmsford, Essex at the moment?

What is the carbon monoxide (CO) level in Chelmsford, Essex at the moment?

What is the sulfur dioxide (SO2) level in Chelmsford, Essex at the moment?

What is the ozone (O3) level in Chelmsford, Essex at the moment?

What is the nitrogen dioxide (NO2) level in Chelmsford, Essex at the moment?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 level in Chelmsford, Essex at the moment?

What is the PM₁₀ level in Chelmsford, Essex at the moment?

What is the sulfur dioxide (SO₂) level in Chelmsford, Essex at the moment?

What is the ozone (O₃) level in Chelmsford, Essex at the moment?

What is the nitrogen dioxide (NO₂) level in Chelmsford, Essex at the moment?