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

The PM10 concentration in Chelmsford, Essex is 22.227 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 0.645 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 56.173 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 6.342 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 9.915 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)

9.91 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

22.23 μg/m³

155

255

425

605+

Ozone (O₃)

56.17 ppb

201

201+

Sulfur Dioxide (SO₂)

0.65 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.34 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.02 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

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
2026-08-12T18:00:00.000Z	44 \| good	6.292 \| good	15.888 \| good	47.834 \| good	1.457 \| good	5.975 \| good	0.024 \| good
2026-08-12T19:00:00.000Z	45 \| good	6.402 \| good	16.841 \| good	49.066 \| good	0.988 \| good	11.962 \| good	0.025 \| good
2026-08-12T20:00:00.000Z	44 \| good	7.388 \| good	26.545 \| good	47.676 \| good	0.656 \| good	7.547 \| good	0.024 \| good
2026-08-12T21:00:00.000Z	43 \| good	6.627 \| good	19.653 \| good	46.048 \| good	0.819 \| good	13.023 \| good	0.019 \| good
2026-08-12T22:00:00.000Z	51 \| moderate	6.547 \| good	18.754 \| good	54.609 \| good	0.552 \| good	19.432 \| good	0.02 \| good
2026-08-12T23:00:00.000Z	48 \| good	7.595 \| good	17.214 \| good	51.776 \| good	0.55 \| good	7.178 \| good	0.02 \| good
2026-08-13T00:00:00.000Z	46 \| good	7.182 \| good	21.091 \| good	50.221 \| good	0.889 \| good	8.185 \| good	0.165 \| good
2026-08-13T01:00:00.000Z	47 \| good	7.915 \| good	23.06 \| good	51.347 \| good	0.702 \| good	7.264 \| good	0.153 \| good
2026-08-13T02:00:00.000Z	44 \| good	7.549 \| good	23.407 \| good	38.891 \| good	0.65 \| good	7.982 \| good	0.158 \| good
2026-08-13T03:00:00.000Z	38 \| good	6.636 \| good	19.58 \| good	31.529 \| good	0.627 \| good	13.734 \| good	0.158 \| good
2026-08-13T04:00:00.000Z	33 \| good	6.011 \| good	22.246 \| good	35.827 \| good	0.757 \| good	15.827 \| good	0.165 \| good
2026-08-13T05:00:00.000Z	49 \| good	8.802 \| good	25.688 \| good	42.311 \| good	0.711 \| good	8.149 \| good	0.02 \| good
2026-08-13T06:00:00.000Z	49 \| good	8.79 \| good	23.333 \| good	41.654 \| good	0.761 \| good	12.337 \| good	0.021 \| good
2026-08-13T07:00:00.000Z	44 \| good	8.298 \| good	21.083 \| good	40.257 \| good	0.7 \| good	11.348 \| good	0.021 \| good
2026-08-13T08:00:00.000Z	44 \| good	8.349 \| good	21.989 \| good	28.283 \| good	0.727 \| good	17.405 \| good	0.02 \| good
2026-08-13T09:00:00.000Z	49 \| good	9.031 \| good	20.019 \| good	23.077 \| good	0.801 \| good	11.192 \| good	0.022 \| good
2026-08-13T10:00:00.000Z	44 \| good	8.072 \| good	23.04 \| good	37.614 \| good	1.063 \| good	12.691 \| good	0.021 \| good
2026-08-13T11:00:00.000Z	49 \| good	8.711 \| good	19.254 \| good	32.053 \| good	1.473 \| good	8.129 \| good	0.021 \| good
2026-08-13T12:00:00.000Z	44 \| good	8.443 \| good	20.089 \| good	33.104 \| good	1.832 \| good	9.191 \| good	0.021 \| good
2026-08-13T13:00:00.000Z	44 \| good	8.12 \| good	30.894 \| good	33.77 \| good	1.567 \| good	8.871 \| good	0.023 \| good
2026-08-13T14:00:00.000Z	38 \| good	7.417 \| good	29.016 \| good	35.808 \| good	1.648 \| good	9.759 \| good	0.021 \| good
2026-08-13T15:00:00.000Z	44 \| good	8.052 \| good	21.021 \| good	39.678 \| good	1.367 \| good	11.395 \| good	0.023 \| good
2026-08-13T16:00:00.000Z	44 \| good	7.686 \| good	26.001 \| good	41.234 \| good	1.169 \| good	18.669 \| good	0.022 \| good
2026-08-13T17:00:00.000Z	97 \| moderate	8.811 \| good	22.213 \| good	68.859 \| fine	1.341 \| good	18.451 \| good	0.021 \| good
2026-08-13T18:00:00.000Z	90 \| moderate	8.982 \| good	16.512 \| good	67.404 \| fine	1.283 \| good	24.564 \| good	0.03 \| good
2026-08-13T19:00:00.000Z	93 \| moderate	7.939 \| good	30.215 \| good	67.789 \| fine	1.241 \| good	24.564 \| good	0.028 \| good
2026-08-13T20:00:00.000Z	61 \| moderate	7.394 \| good	23.479 \| good	58.367 \| fine	0.969 \| good	14.042 \| good	0.029 \| good
2026-08-13T21:00:00.000Z	58 \| moderate	6.277 \| good	26.26 \| good	56.85 \| fine	0.811 \| good	24.564 \| good	0.032 \| good
2026-08-13T22:00:00.000Z	84 \| moderate	7.118 \| good	31.4 \| good	65.494 \| fine	0.792 \| good	24.564 \| good	0.024 \| good
2026-08-13T23:00:00.000Z	67 \| moderate	9.169 \| good	23.454 \| good	59.973 \| fine	0.669 \| good	30.905 \| good	0.017 \| good
2026-08-14T00:00:00.000Z	77 \| moderate	8.955 \| good	26.773 \| good	63.447 \| fine	0.78 \| good	23.709 \| good	0.151 \| good
2026-08-14T01:00:00.000Z	80 \| moderate	7.676 \| good	26.228 \| good	63.733 \| fine	0.754 \| good	24.108 \| good	0.139 \| good
2026-08-14T02:00:00.000Z	74 \| moderate	9.221 \| good	23.076 \| good	62.099 \| fine	1.069 \| good	19.62 \| good	0.142 \| good
2026-08-14T03:00:00.000Z	48 \| good	7.994 \| good	23.874 \| good	51.579 \| good	0.942 \| good	24.172 \| good	0.148 \| good
2026-08-14T04:00:00.000Z	44 \| good	8.071 \| good	20.249 \| good	42.06 \| good	0.925 \| good	17.188 \| good	0.148 \| good
2026-08-14T05:00:00.000Z	54 \| moderate	10.879 \| good	22.111 \| good	43.597 \| good	0.904 \| good	15.43 \| good	0.02 \| good
2026-08-14T06:00:00.000Z	49 \| good	9.055 \| good	28.309 \| good	42.816 \| good	0.936 \| good	16.586 \| good	0.02 \| good
2026-08-14T07:00:00.000Z	58 \| moderate	12.726 \| fine	27.49 \| good	40.798 \| good	0.891 \| good	12.879 \| good	0.021 \| good
2026-08-14T08:00:00.000Z	58 \| moderate	13.271 \| fine	23.128 \| good	32.822 \| good	0.895 \| good	12.297 \| good	0.021 \| good
2026-08-14T09:00:00.000Z	60 \| moderate	13.587 \| fine	28.453 \| good	32.89 \| good	0.903 \| good	12.61 \| good	0.021 \| good
2026-08-14T10:00:00.000Z	58 \| moderate	10.859 \| good	28.297 \| good	57.143 \| fine	0.942 \| good	11.31 \| good	0.022 \| good
2026-08-14T11:00:00.000Z	49 \| good	8.965 \| good	27.201 \| good	43.172 \| good	0.962 \| good	5.668 \| good	0.022 \| good
2026-08-14T12:00:00.000Z	52 \| moderate	9.516 \| good	20.34 \| good	47.555 \| good	0.851 \| good	8.122 \| good	0.023 \| good
2026-08-14T13:00:00.000Z	54 \| moderate	11.03 \| good	26.559 \| good	48.302 \| good	0.637 \| good	6.113 \| good	0.023 \| good
2026-08-14T14:00:00.000Z	54 \| moderate	11.427 \| good	19.78 \| good	50.864 \| good	0.676 \| good	7.004 \| good	0.025 \| good
2026-08-14T15:00:00.000Z	52 \| moderate	9.807 \| good	21.731 \| good	50.691 \| good	0.74 \| good	7.701 \| good	0.023 \| good
2026-08-14T16:00:00.000Z	93 \| moderate	11.992 \| good	20.2 \| good	67.567 \| fine	0.761 \| good	6.652 \| good	0.022 \| good
2026-08-14T17:00:00.000Z	54 \| moderate	9.915 \| good	22.227 \| good	56.173 \| fine	0.645 \| good	6.342 \| good	0.022 \| good
2026-08-14T17:00:00.000Z	54 \| moderate	9.915 \| good	22.227 \| good	56.173 \| fine	0.645 \| good	6.342 \| good	0.022 \| good
2026-08-14T18:00:00.000Z	43 \| good	4.452 \| good	6.802 \| good	46.15 \| good	0.121 \| good	2.011 \| good	0.112 \| good
2026-08-14T19:00:00.000Z	39 \| good	4.416 \| good	6.331 \| good	41.648 \| good	0.144 \| good	2.767 \| good	0.112 \| good
2026-08-14T20:00:00.000Z	34 \| good	4.613 \| good	6.7 \| good	37.28 \| good	0.154 \| good	3.42 \| good	0.112 \| good
2026-08-14T21:00:00.000Z	44 \| good	7.954 \| good	12.172 \| good	41.21 \| good	0.195 \| good	5.027 \| good	0.122 \| good
2026-08-14T22:00:00.000Z	52 \| moderate	9.905 \| good	20.364 \| good	47.901 \| good	0.231 \| good	4.333 \| good	0.137 \| good
2026-08-14T23:00:00.000Z	54 \| moderate	11.255 \| good	21.351 \| good	47.574 \| good	0.224 \| good	4.12 \| good	0.139 \| good
2026-08-15T00:00:00.000Z	54 \| moderate	10.757 \| good	20.726 \| good	42.089 \| good	0.224 \| good	4.082 \| good	0.135 \| good
2026-08-15T01:00:00.000Z	49 \| good	8.649 \| good	15.986 \| good	35.57 \| good	0.173 \| good	3.475 \| good	0.127 \| good
2026-08-15T02:00:00.000Z	38 \| good	7.023 \| good	10.303 \| good	27.194 \| good	0.15 \| good	3.175 \| good	0.123 \| good
2026-08-15T03:00:00.000Z	33 \| good	5.799 \| good	8.109 \| good	22.778 \| good	0.137 \| good	2.966 \| good	0.12 \| good
2026-08-15T04:00:00.000Z	22 \| good	3.994 \| good	5.253 \| good	23.475 \| good	0.121 \| good	2.571 \| good	0.118 \| good
2026-08-15T05:00:00.000Z	22 \| good	3.803 \| good	5.233 \| good	21.689 \| good	0.162 \| good	2.587 \| good	0.116 \| good
2026-08-15T06:00:00.000Z	22 \| good	3.654 \| good	5.517 \| good	20.704 \| good	0.241 \| good	2.281 \| good	0.115 \| good
2026-08-15T07:00:00.000Z	22 \| good	4.004 \| good	6.056 \| good	20.492 \| good	0.275 \| good	2.372 \| good	0.117 \| good
2026-08-15T08:00:00.000Z	27 \| good	4.897 \| good	6.662 \| good	21.462 \| good	0.25 \| good	1.971 \| good	0.117 \| good
2026-08-15T09:00:00.000Z	27 \| good	4.93 \| good	6.886 \| good	24.051 \| good	0.203 \| good	1.607 \| good	0.119 \| good
2026-08-15T10:00:00.000Z	27 \| good	4.672 \| good	6.953 \| good	28.321 \| good	0.158 \| good	1.602 \| good	0.119 \| good
2026-08-15T11:00:00.000Z	29 \| good	4.243 \| good	6.32 \| good	30.71 \| good	0.135 \| good	1.597 \| good	0.115 \| good
2026-08-15T12:00:00.000Z	29 \| good	4.44 \| good	6.352 \| good	31.324 \| good	0.096 \| good	1.542 \| good	0.114 \| good
2026-08-15T13:00:00.000Z	31 \| good	3.651 \| good	6.101 \| good	32.763 \| good	0.081 \| good	1.496 \| good	0.112 \| good
2026-08-15T14:00:00.000Z	31 \| good	3.465 \| good	6.038 \| good	32.824 \| good	0.066 \| good	1.375 \| good	0.109 \| good
2026-08-15T15:00:00.000Z	31 \| good	3.521 \| good	6.167 \| good	32.631 \| good	0.063 \| good	1.351 \| good	0.108 \| good
2026-08-15T16:00:00.000Z	30 \| good	3.466 \| good	6.334 \| good	32.466 \| good	0.055 \| good	1.358 \| good	0.107 \| good
2026-08-15T17:00:00.000Z	31 \| good	3.463 \| good	5.964 \| good	33.61 \| good	0.064 \| good	1.327 \| good	0.109 \| good
2026-08-15T18:00:00.000Z	31 \| good	3.811 \| good	5.883 \| good	34.047 \| good	0.081 \| good	1.379 \| good	0.109 \| good
2026-08-15T19:00:00.000Z	30 \| good	4.054 \| good	6.628 \| good	32.094 \| good	0.113 \| good	1.863 \| good	0.11 \| good
2026-08-15T20:00:00.000Z	27 \| good	4.017 \| good	7.213 \| good	28.761 \| good	0.147 \| good	2.652 \| good	0.111 \| good
2026-08-15T21:00:00.000Z	23 \| good	4.057 \| good	7.056 \| good	25.18 \| good	0.142 \| good	2.755 \| good	0.109 \| good
2026-08-15T22:00:00.000Z	22 \| good	3.89 \| good	6.701 \| good	22.194 \| good	0.145 \| good	3.049 \| good	0.109 \| good
2026-08-15T23:00:00.000Z	22 \| good	3.83 \| good	6.393 \| good	20.455 \| good	0.132 \| good	3.428 \| good	0.109 \| good
2026-08-16T00:00:00.000Z	22 \| good	3.972 \| good	6.491 \| good	19.951 \| good	0.126 \| good	3.769 \| good	0.109 \| good
2026-08-16T01:00:00.000Z	22 \| good	4.02 \| good	6.886 \| good	18.902 \| good	0.125 \| good	3.825 \| good	0.109 \| good
2026-08-16T02:00:00.000Z	27 \| good	4.586 \| good	7.712 \| good	18.252 \| good	0.128 \| good	3.612 \| good	0.109 \| good
2026-08-16T03:00:00.000Z	27 \| good	5.288 \| good	8.193 \| good	17.457 \| good	0.131 \| good	3.681 \| good	0.109 \| good
2026-08-16T04:00:00.000Z	33 \| good	5.563 \| good	8.883 \| good	16.943 \| good	0.127 \| good	3.548 \| good	0.108 \| good
2026-08-16T05:00:00.000Z	33 \| good	5.776 \| good	9.431 \| good	17.955 \| good	0.138 \| good	3.317 \| good	0.107 \| good
2026-08-16T06:00:00.000Z	33 \| good	5.988 \| good	9.508 \| good	16.479 \| good	0.158 \| good	3.483 \| good	0.111 \| good
2026-08-16T07:00:00.000Z	27 \| good	4.828 \| good	9.511 \| good	18.087 \| good	0.165 \| good	2.905 \| good	0.115 \| good
2026-08-16T08:00:00.000Z	27 \| good	4.712 \| good	8.69 \| good	23.504 \| good	0.161 \| good	2.837 \| good	0.114 \| good
2026-08-16T09:00:00.000Z	27 \| good	4.653 \| good	8.178 \| good	24.353 \| good	0.193 \| good	2.963 \| good	0.112 \| good
2026-08-16T10:00:00.000Z	33 \| good	6.389 \| good	9.287 \| good	24.552 \| good	0.269 \| good	3.063 \| good	0.119 \| good
2026-08-16T11:00:00.000Z	30 \| good	4.832 \| good	9.602 \| good	31.886 \| good	0.234 \| good	2.282 \| good	0.121 \| good
2026-08-16T12:00:00.000Z	32 \| good	5.436 \| good	8.544 \| good	35.18 \| good	0.209 \| good	1.588 \| good	0.121 \| good
2026-08-16T13:00:00.000Z	39 \| good	5.216 \| good	7.761 \| good	42.439 \| good	0.202 \| good	1.083 \| good	0.12 \| good
2026-08-16T14:00:00.000Z	43 \| good	5.127 \| good	7.255 \| good	46.063 \| good	0.177 \| good	0.986 \| good	0.118 \| good
2026-08-16T15:00:00.000Z	42 \| good	4.768 \| good	6.883 \| good	45.474 \| good	0.14 \| good	1.055 \| good	0.117 \| good
2026-08-16T16:00:00.000Z	42 \| good	4.223 \| good	6.767 \| good	44.82 \| good	0.121 \| good	1.22 \| good	0.116 \| good
2026-08-16T17:00:00.000Z	41 \| good	4.658 \| good	7.152 \| good	44.399 \| good	0.143 \| good	1.49 \| good	0.118 \| good

Chelmsford

Get reliable air quality data to drive your business

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

0.02ppm

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 05:00:00 on 2026-08-13.

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 04:00:00 on 2026-08-14.

What is the AQI in Chelmsford, Essex right now?

As of now, the AQI in Chelmsford, Essex is 54, indicating Moderate conditions.

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

Chelmsford, Essex air has the highest levels of O3.

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 9.915 μg/m³.

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

The PM₁₀ concentration in Chelmsford, Essex is 22.227 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 0.022 ppm.

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

Currently, Chelmsford, Essex has a sulfur dioxide (SO₂) concentration of 0.645 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 56.173 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 6.342 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-08-12T18:00:00.000Z	44 \| good	6.292 \| good	15.888 \| good	47.834 \| good	1.457 \| good	5.975 \| good	0.024 \| good
2026-08-12T19:00:00.000Z	45 \| good	6.402 \| good	16.841 \| good	49.066 \| good	0.988 \| good	11.962 \| good	0.025 \| good
2026-08-12T20:00:00.000Z	44 \| good	7.388 \| good	26.545 \| good	47.676 \| good	0.656 \| good	7.547 \| good	0.024 \| good
2026-08-12T21:00:00.000Z	43 \| good	6.627 \| good	19.653 \| good	46.048 \| good	0.819 \| good	13.023 \| good	0.019 \| good
2026-08-12T22:00:00.000Z	51 \| moderate	6.547 \| good	18.754 \| good	54.609 \| good	0.552 \| good	19.432 \| good	0.02 \| good
2026-08-12T23:00:00.000Z	48 \| good	7.595 \| good	17.214 \| good	51.776 \| good	0.55 \| good	7.178 \| good	0.02 \| good
2026-08-13T00:00:00.000Z	46 \| good	7.182 \| good	21.091 \| good	50.221 \| good	0.889 \| good	8.185 \| good	0.165 \| good
2026-08-13T01:00:00.000Z	47 \| good	7.915 \| good	23.06 \| good	51.347 \| good	0.702 \| good	7.264 \| good	0.153 \| good
2026-08-13T02:00:00.000Z	44 \| good	7.549 \| good	23.407 \| good	38.891 \| good	0.65 \| good	7.982 \| good	0.158 \| good
2026-08-13T03:00:00.000Z	38 \| good	6.636 \| good	19.58 \| good	31.529 \| good	0.627 \| good	13.734 \| good	0.158 \| good
2026-08-13T04:00:00.000Z	33 \| good	6.011 \| good	22.246 \| good	35.827 \| good	0.757 \| good	15.827 \| good	0.165 \| good
2026-08-13T05:00:00.000Z	49 \| good	8.802 \| good	25.688 \| good	42.311 \| good	0.711 \| good	8.149 \| good	0.02 \| good
2026-08-13T06:00:00.000Z	49 \| good	8.79 \| good	23.333 \| good	41.654 \| good	0.761 \| good	12.337 \| good	0.021 \| good
2026-08-13T07:00:00.000Z	44 \| good	8.298 \| good	21.083 \| good	40.257 \| good	0.7 \| good	11.348 \| good	0.021 \| good
2026-08-13T08:00:00.000Z	44 \| good	8.349 \| good	21.989 \| good	28.283 \| good	0.727 \| good	17.405 \| good	0.02 \| good
2026-08-13T09:00:00.000Z	49 \| good	9.031 \| good	20.019 \| good	23.077 \| good	0.801 \| good	11.192 \| good	0.022 \| good
2026-08-13T10:00:00.000Z	44 \| good	8.072 \| good	23.04 \| good	37.614 \| good	1.063 \| good	12.691 \| good	0.021 \| good
2026-08-13T11:00:00.000Z	49 \| good	8.711 \| good	19.254 \| good	32.053 \| good	1.473 \| good	8.129 \| good	0.021 \| good
2026-08-13T12:00:00.000Z	44 \| good	8.443 \| good	20.089 \| good	33.104 \| good	1.832 \| good	9.191 \| good	0.021 \| good
2026-08-13T13:00:00.000Z	44 \| good	8.12 \| good	30.894 \| good	33.77 \| good	1.567 \| good	8.871 \| good	0.023 \| good
2026-08-13T14:00:00.000Z	38 \| good	7.417 \| good	29.016 \| good	35.808 \| good	1.648 \| good	9.759 \| good	0.021 \| good
2026-08-13T15:00:00.000Z	44 \| good	8.052 \| good	21.021 \| good	39.678 \| good	1.367 \| good	11.395 \| good	0.023 \| good
2026-08-13T16:00:00.000Z	44 \| good	7.686 \| good	26.001 \| good	41.234 \| good	1.169 \| good	18.669 \| good	0.022 \| good
2026-08-13T17:00:00.000Z	97 \| moderate	8.811 \| good	22.213 \| good	68.859 \| fine	1.341 \| good	18.451 \| good	0.021 \| good
2026-08-13T18:00:00.000Z	90 \| moderate	8.982 \| good	16.512 \| good	67.404 \| fine	1.283 \| good	24.564 \| good	0.03 \| good
2026-08-13T19:00:00.000Z	93 \| moderate	7.939 \| good	30.215 \| good	67.789 \| fine	1.241 \| good	24.564 \| good	0.028 \| good
2026-08-13T20:00:00.000Z	61 \| moderate	7.394 \| good	23.479 \| good	58.367 \| fine	0.969 \| good	14.042 \| good	0.029 \| good
2026-08-13T21:00:00.000Z	58 \| moderate	6.277 \| good	26.26 \| good	56.85 \| fine	0.811 \| good	24.564 \| good	0.032 \| good
2026-08-13T22:00:00.000Z	84 \| moderate	7.118 \| good	31.4 \| good	65.494 \| fine	0.792 \| good	24.564 \| good	0.024 \| good
2026-08-13T23:00:00.000Z	67 \| moderate	9.169 \| good	23.454 \| good	59.973 \| fine	0.669 \| good	30.905 \| good	0.017 \| good
2026-08-14T00:00:00.000Z	77 \| moderate	8.955 \| good	26.773 \| good	63.447 \| fine	0.78 \| good	23.709 \| good	0.151 \| good
2026-08-14T01:00:00.000Z	80 \| moderate	7.676 \| good	26.228 \| good	63.733 \| fine	0.754 \| good	24.108 \| good	0.139 \| good
2026-08-14T02:00:00.000Z	74 \| moderate	9.221 \| good	23.076 \| good	62.099 \| fine	1.069 \| good	19.62 \| good	0.142 \| good
2026-08-14T03:00:00.000Z	48 \| good	7.994 \| good	23.874 \| good	51.579 \| good	0.942 \| good	24.172 \| good	0.148 \| good
2026-08-14T04:00:00.000Z	44 \| good	8.071 \| good	20.249 \| good	42.06 \| good	0.925 \| good	17.188 \| good	0.148 \| good
2026-08-14T05:00:00.000Z	54 \| moderate	10.879 \| good	22.111 \| good	43.597 \| good	0.904 \| good	15.43 \| good	0.02 \| good
2026-08-14T06:00:00.000Z	49 \| good	9.055 \| good	28.309 \| good	42.816 \| good	0.936 \| good	16.586 \| good	0.02 \| good
2026-08-14T07:00:00.000Z	58 \| moderate	12.726 \| fine	27.49 \| good	40.798 \| good	0.891 \| good	12.879 \| good	0.021 \| good
2026-08-14T08:00:00.000Z	58 \| moderate	13.271 \| fine	23.128 \| good	32.822 \| good	0.895 \| good	12.297 \| good	0.021 \| good
2026-08-14T09:00:00.000Z	60 \| moderate	13.587 \| fine	28.453 \| good	32.89 \| good	0.903 \| good	12.61 \| good	0.021 \| good
2026-08-14T10:00:00.000Z	58 \| moderate	10.859 \| good	28.297 \| good	57.143 \| fine	0.942 \| good	11.31 \| good	0.022 \| good
2026-08-14T11:00:00.000Z	49 \| good	8.965 \| good	27.201 \| good	43.172 \| good	0.962 \| good	5.668 \| good	0.022 \| good
2026-08-14T12:00:00.000Z	52 \| moderate	9.516 \| good	20.34 \| good	47.555 \| good	0.851 \| good	8.122 \| good	0.023 \| good
2026-08-14T13:00:00.000Z	54 \| moderate	11.03 \| good	26.559 \| good	48.302 \| good	0.637 \| good	6.113 \| good	0.023 \| good
2026-08-14T14:00:00.000Z	54 \| moderate	11.427 \| good	19.78 \| good	50.864 \| good	0.676 \| good	7.004 \| good	0.025 \| good
2026-08-14T15:00:00.000Z	52 \| moderate	9.807 \| good	21.731 \| good	50.691 \| good	0.74 \| good	7.701 \| good	0.023 \| good
2026-08-14T16:00:00.000Z	93 \| moderate	11.992 \| good	20.2 \| good	67.567 \| fine	0.761 \| good	6.652 \| good	0.022 \| good
2026-08-14T17:00:00.000Z	54 \| moderate	9.915 \| good	22.227 \| good	56.173 \| fine	0.645 \| good	6.342 \| good	0.022 \| good
2026-08-14T17:00:00.000Z	54 \| moderate	9.915 \| good	22.227 \| good	56.173 \| fine	0.645 \| good	6.342 \| good	0.022 \| good
2026-08-14T18:00:00.000Z	43 \| good	4.452 \| good	6.802 \| good	46.15 \| good	0.121 \| good	2.011 \| good	0.112 \| good
2026-08-14T19:00:00.000Z	39 \| good	4.416 \| good	6.331 \| good	41.648 \| good	0.144 \| good	2.767 \| good	0.112 \| good
2026-08-14T20:00:00.000Z	34 \| good	4.613 \| good	6.7 \| good	37.28 \| good	0.154 \| good	3.42 \| good	0.112 \| good
2026-08-14T21:00:00.000Z	44 \| good	7.954 \| good	12.172 \| good	41.21 \| good	0.195 \| good	5.027 \| good	0.122 \| good
2026-08-14T22:00:00.000Z	52 \| moderate	9.905 \| good	20.364 \| good	47.901 \| good	0.231 \| good	4.333 \| good	0.137 \| good
2026-08-14T23:00:00.000Z	54 \| moderate	11.255 \| good	21.351 \| good	47.574 \| good	0.224 \| good	4.12 \| good	0.139 \| good
2026-08-15T00:00:00.000Z	54 \| moderate	10.757 \| good	20.726 \| good	42.089 \| good	0.224 \| good	4.082 \| good	0.135 \| good
2026-08-15T01:00:00.000Z	49 \| good	8.649 \| good	15.986 \| good	35.57 \| good	0.173 \| good	3.475 \| good	0.127 \| good
2026-08-15T02:00:00.000Z	38 \| good	7.023 \| good	10.303 \| good	27.194 \| good	0.15 \| good	3.175 \| good	0.123 \| good
2026-08-15T03:00:00.000Z	33 \| good	5.799 \| good	8.109 \| good	22.778 \| good	0.137 \| good	2.966 \| good	0.12 \| good
2026-08-15T04:00:00.000Z	22 \| good	3.994 \| good	5.253 \| good	23.475 \| good	0.121 \| good	2.571 \| good	0.118 \| good
2026-08-15T05:00:00.000Z	22 \| good	3.803 \| good	5.233 \| good	21.689 \| good	0.162 \| good	2.587 \| good	0.116 \| good
2026-08-15T06:00:00.000Z	22 \| good	3.654 \| good	5.517 \| good	20.704 \| good	0.241 \| good	2.281 \| good	0.115 \| good
2026-08-15T07:00:00.000Z	22 \| good	4.004 \| good	6.056 \| good	20.492 \| good	0.275 \| good	2.372 \| good	0.117 \| good
2026-08-15T08:00:00.000Z	27 \| good	4.897 \| good	6.662 \| good	21.462 \| good	0.25 \| good	1.971 \| good	0.117 \| good
2026-08-15T09:00:00.000Z	27 \| good	4.93 \| good	6.886 \| good	24.051 \| good	0.203 \| good	1.607 \| good	0.119 \| good
2026-08-15T10:00:00.000Z	27 \| good	4.672 \| good	6.953 \| good	28.321 \| good	0.158 \| good	1.602 \| good	0.119 \| good
2026-08-15T11:00:00.000Z	29 \| good	4.243 \| good	6.32 \| good	30.71 \| good	0.135 \| good	1.597 \| good	0.115 \| good
2026-08-15T12:00:00.000Z	29 \| good	4.44 \| good	6.352 \| good	31.324 \| good	0.096 \| good	1.542 \| good	0.114 \| good
2026-08-15T13:00:00.000Z	31 \| good	3.651 \| good	6.101 \| good	32.763 \| good	0.081 \| good	1.496 \| good	0.112 \| good
2026-08-15T14:00:00.000Z	31 \| good	3.465 \| good	6.038 \| good	32.824 \| good	0.066 \| good	1.375 \| good	0.109 \| good
2026-08-15T15:00:00.000Z	31 \| good	3.521 \| good	6.167 \| good	32.631 \| good	0.063 \| good	1.351 \| good	0.108 \| good
2026-08-15T16:00:00.000Z	30 \| good	3.466 \| good	6.334 \| good	32.466 \| good	0.055 \| good	1.358 \| good	0.107 \| good
2026-08-15T17:00:00.000Z	31 \| good	3.463 \| good	5.964 \| good	33.61 \| good	0.064 \| good	1.327 \| good	0.109 \| good
2026-08-15T18:00:00.000Z	31 \| good	3.811 \| good	5.883 \| good	34.047 \| good	0.081 \| good	1.379 \| good	0.109 \| good
2026-08-15T19:00:00.000Z	30 \| good	4.054 \| good	6.628 \| good	32.094 \| good	0.113 \| good	1.863 \| good	0.11 \| good
2026-08-15T20:00:00.000Z	27 \| good	4.017 \| good	7.213 \| good	28.761 \| good	0.147 \| good	2.652 \| good	0.111 \| good
2026-08-15T21:00:00.000Z	23 \| good	4.057 \| good	7.056 \| good	25.18 \| good	0.142 \| good	2.755 \| good	0.109 \| good
2026-08-15T22:00:00.000Z	22 \| good	3.89 \| good	6.701 \| good	22.194 \| good	0.145 \| good	3.049 \| good	0.109 \| good
2026-08-15T23:00:00.000Z	22 \| good	3.83 \| good	6.393 \| good	20.455 \| good	0.132 \| good	3.428 \| good	0.109 \| good
2026-08-16T00:00:00.000Z	22 \| good	3.972 \| good	6.491 \| good	19.951 \| good	0.126 \| good	3.769 \| good	0.109 \| good
2026-08-16T01:00:00.000Z	22 \| good	4.02 \| good	6.886 \| good	18.902 \| good	0.125 \| good	3.825 \| good	0.109 \| good
2026-08-16T02:00:00.000Z	27 \| good	4.586 \| good	7.712 \| good	18.252 \| good	0.128 \| good	3.612 \| good	0.109 \| good
2026-08-16T03:00:00.000Z	27 \| good	5.288 \| good	8.193 \| good	17.457 \| good	0.131 \| good	3.681 \| good	0.109 \| good
2026-08-16T04:00:00.000Z	33 \| good	5.563 \| good	8.883 \| good	16.943 \| good	0.127 \| good	3.548 \| good	0.108 \| good
2026-08-16T05:00:00.000Z	33 \| good	5.776 \| good	9.431 \| good	17.955 \| good	0.138 \| good	3.317 \| good	0.107 \| good
2026-08-16T06:00:00.000Z	33 \| good	5.988 \| good	9.508 \| good	16.479 \| good	0.158 \| good	3.483 \| good	0.111 \| good
2026-08-16T07:00:00.000Z	27 \| good	4.828 \| good	9.511 \| good	18.087 \| good	0.165 \| good	2.905 \| good	0.115 \| good
2026-08-16T08:00:00.000Z	27 \| good	4.712 \| good	8.69 \| good	23.504 \| good	0.161 \| good	2.837 \| good	0.114 \| good
2026-08-16T09:00:00.000Z	27 \| good	4.653 \| good	8.178 \| good	24.353 \| good	0.193 \| good	2.963 \| good	0.112 \| good
2026-08-16T10:00:00.000Z	33 \| good	6.389 \| good	9.287 \| good	24.552 \| good	0.269 \| good	3.063 \| good	0.119 \| good
2026-08-16T11:00:00.000Z	30 \| good	4.832 \| good	9.602 \| good	31.886 \| good	0.234 \| good	2.282 \| good	0.121 \| good
2026-08-16T12:00:00.000Z	32 \| good	5.436 \| good	8.544 \| good	35.18 \| good	0.209 \| good	1.588 \| good	0.121 \| good
2026-08-16T13:00:00.000Z	39 \| good	5.216 \| good	7.761 \| good	42.439 \| good	0.202 \| good	1.083 \| good	0.12 \| good
2026-08-16T14:00:00.000Z	43 \| good	5.127 \| good	7.255 \| good	46.063 \| good	0.177 \| good	0.986 \| good	0.118 \| good
2026-08-16T15:00:00.000Z	42 \| good	4.768 \| good	6.883 \| good	45.474 \| good	0.14 \| good	1.055 \| good	0.117 \| good
2026-08-16T16:00:00.000Z	42 \| good	4.223 \| good	6.767 \| good	44.82 \| good	0.121 \| good	1.22 \| good	0.116 \| good
2026-08-16T17:00:00.000Z	41 \| good	4.658 \| good	7.152 \| good	44.399 \| good	0.143 \| good	1.49 \| good	0.118 \| 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?