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

The PM10 concentration in Colchester, Essex is 10.974 μg/m3 at the moment.

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

Currently, Colchester, Essex has a sulfur dioxide (SO2) concentration of 0.817 ppb.

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

The current ozone (O3) level in Colchester, Essex at the moment is 27.659 ppm.

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

Nitrogen dioxide (NO2) level in Colchester, Essex at the moment is 6.136 ppb.

Live air quality index in Colchester, Essex today

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

PM2.5 levels in Colchester, Essex are currently 7.489 μg/m3.

Stay updated with real-time air quality in Colchester, 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)

Good

Colchester, Essex

Last updated: ... (Local time)

Major air pollutants in Colchester, Essex

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

7.49 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

10.97 μg/m³

155

255

425

605+

Ozone (O₃)

27.66 ppb

201

201+

Sulfur Dioxide (SO₂)

0.82 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.14 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.13 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

Colchester, Essex

Get Live Pollen Counts

Colchester, Essex

Scroll To Air Quality Map

Track live Colchester, Essex air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-05-19T11:00:00.000Z	28 \| good	3.933 \| good	6.609 \| good	29.983 \| good	0.918 \| good	2.797 \| good	0.162 \| good
2026-05-19T12:00:00.000Z	28 \| good	3.98 \| good	5.553 \| good	29.576 \| good	0.946 \| good	3.513 \| good	0.137 \| good
2026-05-19T13:00:00.000Z	28 \| good	3 \| good	6.329 \| good	30.079 \| good	1.053 \| good	2.794 \| good	0.132 \| good
2026-05-19T14:00:00.000Z	31 \| good	3.128 \| good	7.368 \| good	32.957 \| good	0.723 \| good	2.531 \| good	0.131 \| good
2026-05-19T15:00:00.000Z	26 \| good	3.709 \| good	4.761 \| good	28.251 \| good	0.619 \| good	1.796 \| good	0.131 \| good
2026-05-19T16:00:00.000Z	29 \| good	4.142 \| good	9.041 \| good	30.943 \| good	0.727 \| good	3.027 \| good	0.13 \| good
2026-05-19T17:00:00.000Z	31 \| good	4.838 \| good	6.992 \| good	34.388 \| good	0.97 \| good	2.517 \| good	0.141 \| good
2026-05-19T18:00:00.000Z	31 \| good	4.002 \| good	9.445 \| good	32.84 \| good	0.798 \| good	2.686 \| good	0.17 \| good
2026-05-19T19:00:00.000Z	31 \| good	4.895 \| good	6.595 \| good	33.965 \| good	0.643 \| good	2.699 \| good	0.181 \| good
2026-05-19T20:00:00.000Z	33 \| good	5.448 \| good	10.537 \| good	36.212 \| good	0.873 \| good	2.893 \| good	0.221 \| good
2026-05-19T21:00:00.000Z	34 \| good	5.573 \| good	8.624 \| good	37.081 \| good	0.592 \| good	2.528 \| good	0.275 \| good
2026-05-19T22:00:00.000Z	35 \| good	5.629 \| good	12.337 \| good	37.76 \| good	0.77 \| good	2.484 \| good	0.294 \| good
2026-05-19T23:00:00.000Z	33 \| good	5.606 \| good	9.65 \| good	32.327 \| good	0.943 \| good	2.901 \| good	0.306 \| good
2026-05-20T00:00:00.000Z	33 \| good	6.229 \| good	16.855 \| good	35.528 \| good	0.815 \| good	1.974 \| good	0.282 \| good
2026-05-20T01:00:00.000Z	33 \| good	5.741 \| good	13.384 \| good	34.37 \| good	0.815 \| good	2.097 \| good	0.225 \| good
2026-05-20T02:00:00.000Z	38 \| good	6.521 \| good	14.328 \| good	35.267 \| good	0.815 \| good	2.313 \| good	0.179 \| good
2026-05-20T03:00:00.000Z	38 \| good	6.718 \| good	16.787 \| good	36.566 \| good	0.74 \| good	2.31 \| good	0.165 \| good
2026-05-20T04:00:00.000Z	44 \| good	7.546 \| good	22.097 \| good	35.092 \| good	0.762 \| good	2.498 \| good	0.191 \| good
2026-05-20T05:00:00.000Z	49 \| good	8.71 \| good	14.048 \| good	34.169 \| good	0.761 \| good	2.227 \| good	0.191 \| good
2026-05-20T06:00:00.000Z	49 \| good	9.203 \| good	26.495 \| good	37.611 \| good	1.079 \| good	1.881 \| good	0.21 \| good
2026-05-20T07:00:00.000Z	52 \| moderate	9.924 \| good	21.476 \| good	35.911 \| good	1.238 \| good	3.077 \| good	0.179 \| good
2026-05-20T08:00:00.000Z	52 \| moderate	9.858 \| good	17.457 \| good	35.09 \| good	1.253 \| good	3.479 \| good	0.179 \| good
2026-05-20T09:00:00.000Z	49 \| good	9.329 \| good	22.693 \| good	34.362 \| good	1.295 \| good	4.309 \| good	0.163 \| good
2026-05-20T10:00:00.000Z	52 \| moderate	9.818 \| good	15.75 \| good	32.614 \| good	1.168 \| good	3.247 \| good	0.156 \| good
2026-05-20T11:00:00.000Z	49 \| good	9.347 \| good	17.738 \| good	34.19 \| good	1.225 \| good	2.579 \| good	0.146 \| good
2026-05-20T12:00:00.000Z	52 \| moderate	10.348 \| good	15.363 \| good	32.781 \| good	1.081 \| good	2.633 \| good	0.163 \| good
2026-05-20T13:00:00.000Z	49 \| good	8.676 \| good	16.204 \| good	34.464 \| good	1.132 \| good	3.465 \| good	0.16 \| good
2026-05-20T14:00:00.000Z	52 \| moderate	9.609 \| good	16.34 \| good	33.655 \| good	1.527 \| good	3.072 \| good	0.158 \| good
2026-05-20T15:00:00.000Z	54 \| moderate	10.85 \| good	13.251 \| good	35.766 \| good	1.368 \| good	3.004 \| good	0.134 \| good
2026-05-20T16:00:00.000Z	52 \| moderate	10.423 \| good	16.263 \| good	37.522 \| good	1.369 \| good	3.602 \| good	0.162 \| good
2026-05-20T17:00:00.000Z	52 \| moderate	10.151 \| good	15.91 \| good	38.262 \| good	1.023 \| good	2.392 \| good	0.182 \| good
2026-05-20T18:00:00.000Z	49 \| good	9.419 \| good	16.033 \| good	38.066 \| good	1.107 \| good	3.292 \| good	0.194 \| good
2026-05-20T19:00:00.000Z	49 \| good	8.881 \| good	12.992 \| good	39.332 \| good	0.656 \| good	4.385 \| good	0.239 \| good
2026-05-20T20:00:00.000Z	44 \| good	8.373 \| good	13.035 \| good	40.519 \| good	0.631 \| good	3.877 \| good	0.234 \| good
2026-05-20T21:00:00.000Z	44 \| good	8.231 \| good	12.567 \| good	37.771 \| good	0.715 \| good	3.993 \| good	0.219 \| good
2026-05-20T22:00:00.000Z	44 \| good	8.116 \| good	10.961 \| good	33.573 \| good	0.661 \| good	4.949 \| good	0.238 \| good
2026-05-20T23:00:00.000Z	38 \| good	7.417 \| good	12.564 \| good	30.194 \| good	0.989 \| good	6.31 \| good	0.233 \| good
2026-05-21T00:00:00.000Z	38 \| good	6.677 \| good	12.703 \| good	25.522 \| good	0.903 \| good	5.285 \| good	0.217 \| good
2026-05-21T01:00:00.000Z	38 \| good	7.092 \| good	12.382 \| good	16.894 \| good	0.682 \| good	4.73 \| good	0.221 \| good
2026-05-21T02:00:00.000Z	49 \| good	8.529 \| good	17.94 \| good	17.769 \| good	0.682 \| good	4.794 \| good	0.179 \| good
2026-05-21T03:00:00.000Z	49 \| good	8.828 \| good	17.798 \| good	19.002 \| good	0.573 \| good	4.918 \| good	0.167 \| good
2026-05-21T04:00:00.000Z	38 \| good	7.47 \| good	15.29 \| good	23.982 \| good	0.612 \| good	6.139 \| good	0.191 \| good
2026-05-21T05:00:00.000Z	38 \| good	7.122 \| good	12.705 \| good	26.125 \| good	0.539 \| good	3.086 \| good	0.19 \| good
2026-05-21T06:00:00.000Z	44 \| good	7.756 \| good	12.783 \| good	27.371 \| good	0.91 \| good	5.68 \| good	0.172 \| good
2026-05-21T07:00:00.000Z	38 \| good	6.908 \| good	13.602 \| good	26.62 \| good	0.976 \| good	4.816 \| good	0.148 \| good
2026-05-21T08:00:00.000Z	38 \| good	6.965 \| good	14.745 \| good	25.949 \| good	0.968 \| good	6.367 \| good	0.139 \| good
2026-05-21T09:00:00.000Z	38 \| good	7.489 \| good	10.974 \| good	27.659 \| good	0.817 \| good	6.136 \| good	0.13 \| good
2026-05-21T10:00:00.000Z	38 \| good	7.489 \| good	10.974 \| good	27.659 \| good	0.817 \| good	6.136 \| good	0.13 \| good
2026-05-21T11:00:00.000Z	44 \| good	7.66 \| good	11.083 \| good	37.606 \| good	0.196 \| good	2.891 \| good	0.116 \| good
2026-05-21T12:00:00.000Z	38 \| good	7.162 \| good	10.862 \| good	37.936 \| good	0.178 \| good	2.692 \| good	0.115 \| good
2026-05-21T13:00:00.000Z	38 \| good	6.81 \| good	10.494 \| good	38.367 \| good	0.159 \| good	2.31 \| good	0.113 \| good
2026-05-21T14:00:00.000Z	38 \| good	6.507 \| good	10.483 \| good	39.466 \| good	0.147 \| good	1.852 \| good	0.111 \| good
2026-05-21T15:00:00.000Z	37 \| good	6.453 \| good	10.43 \| good	39.936 \| good	0.142 \| good	1.764 \| good	0.112 \| good
2026-05-21T16:00:00.000Z	37 \| good	6.293 \| good	10.249 \| good	40.114 \| good	0.143 \| good	1.971 \| good	0.113 \| good
2026-05-21T17:00:00.000Z	36 \| good	6.155 \| good	10.057 \| good	38.943 \| good	0.17 \| good	2.377 \| good	0.117 \| good
2026-05-21T18:00:00.000Z	34 \| good	6.236 \| good	10.051 \| good	37.276 \| good	0.177 \| good	2.567 \| good	0.116 \| good
2026-05-21T19:00:00.000Z	33 \| good	6.269 \| good	10.155 \| good	33.677 \| good	0.214 \| good	3.32 \| good	0.117 \| good
2026-05-21T20:00:00.000Z	33 \| good	6.216 \| good	10.6 \| good	32.209 \| good	0.234 \| good	4.101 \| good	0.118 \| good
2026-05-21T21:00:00.000Z	33 \| good	6.483 \| good	10.763 \| good	31.199 \| good	0.237 \| good	4.843 \| good	0.119 \| good
2026-05-21T22:00:00.000Z	38 \| good	6.945 \| good	11.176 \| good	28.362 \| good	0.239 \| good	5.596 \| good	0.121 \| good
2026-05-21T23:00:00.000Z	38 \| good	7.432 \| good	11.042 \| good	26.514 \| good	0.199 \| good	5.933 \| good	0.123 \| good
2026-05-22T00:00:00.000Z	44 \| good	8.151 \| good	11.301 \| good	25.174 \| good	0.188 \| good	5.669 \| good	0.122 \| good
2026-05-22T01:00:00.000Z	49 \| good	9.421 \| good	12.943 \| good	24.378 \| good	0.193 \| good	5.019 \| good	0.121 \| good
2026-05-22T02:00:00.000Z	52 \| moderate	10.196 \| good	13.103 \| good	24.025 \| good	0.193 \| good	4.716 \| good	0.119 \| good
2026-05-22T03:00:00.000Z	56 \| moderate	11.533 \| good	15.172 \| good	22.581 \| good	0.216 \| good	5.204 \| good	0.119 \| good
2026-05-22T04:00:00.000Z	60 \| moderate	14.24 \| fine	18.939 \| good	23.042 \| good	0.339 \| good	8.595 \| good	0.123 \| good
2026-05-22T05:00:00.000Z	66 \| moderate	17.294 \| fine	21.429 \| good	22.072 \| good	0.741 \| good	11.346 \| good	0.153 \| good
2026-05-22T06:00:00.000Z	64 \| moderate	15.695 \| fine	20.668 \| good	24.281 \| good	0.616 \| good	10.529 \| good	0.159 \| good
2026-05-22T07:00:00.000Z	60 \| moderate	13.928 \| fine	18.382 \| good	27.193 \| good	0.329 \| good	8.027 \| good	0.155 \| good
2026-05-22T08:00:00.000Z	56 \| moderate	12.496 \| fine	15.65 \| good	32.854 \| good	0.26 \| good	5.459 \| good	0.145 \| good
2026-05-22T09:00:00.000Z	54 \| moderate	11.039 \| good	14.902 \| good	37.589 \| good	0.249 \| good	3.774 \| good	0.135 \| good
2026-05-22T10:00:00.000Z	52 \| moderate	10.218 \| good	14.771 \| good	44.894 \| good	0.219 \| good	2.258 \| good	0.131 \| good
2026-05-22T11:00:00.000Z	49 \| good	8.581 \| good	13.92 \| good	48.357 \| good	0.202 \| good	1.718 \| good	0.129 \| good
2026-05-22T12:00:00.000Z	46 \| good	7.284 \| good	12.183 \| good	50.039 \| good	0.169 \| good	1.42 \| good	0.123 \| good
2026-05-22T13:00:00.000Z	47 \| good	6.611 \| good	10.679 \| good	50.992 \| good	0.147 \| good	1.25 \| good	0.119 \| good
2026-05-22T14:00:00.000Z	48 \| good	6.215 \| good	10.29 \| good	52.078 \| good	0.127 \| good	1.194 \| good	0.117 \| good
2026-05-22T15:00:00.000Z	48 \| good	5.977 \| good	9.78 \| good	52.475 \| good	0.118 \| good	1.222 \| good	0.116 \| good
2026-05-22T16:00:00.000Z	47 \| good	5.779 \| good	9.635 \| good	51.04 \| good	0.115 \| good	1.39 \| good	0.116 \| good
2026-05-22T17:00:00.000Z	45 \| good	5.724 \| good	9.153 \| good	48.908 \| good	0.129 \| good	1.694 \| good	0.117 \| good
2026-05-22T18:00:00.000Z	44 \| good	5.641 \| good	9.331 \| good	47.136 \| good	0.146 \| good	2.279 \| good	0.118 \| good
2026-05-22T19:00:00.000Z	41 \| good	5.566 \| good	9.338 \| good	43.649 \| good	0.171 \| good	2.971 \| good	0.116 \| good
2026-05-22T20:00:00.000Z	40 \| good	5.85 \| good	9.108 \| good	42.65 \| good	0.191 \| good	3.323 \| good	0.118 \| good
2026-05-22T21:00:00.000Z	36 \| good	6.158 \| good	9.522 \| good	39.266 \| good	0.224 \| good	4.236 \| good	0.121 \| good
2026-05-22T22:00:00.000Z	38 \| good	6.748 \| good	10.449 \| good	34.362 \| good	0.251 \| good	5.322 \| good	0.123 \| good
2026-05-22T23:00:00.000Z	44 \| good	7.56 \| good	11.132 \| good	31.736 \| good	0.277 \| good	6.309 \| good	0.129 \| good
2026-05-23T00:00:00.000Z	49 \| good	8.62 \| good	11.949 \| good	29.046 \| good	0.275 \| good	6.807 \| good	0.135 \| good
2026-05-23T01:00:00.000Z	52 \| moderate	10.448 \| good	13.207 \| good	27.467 \| good	0.265 \| good	7.132 \| good	0.14 \| good
2026-05-23T02:00:00.000Z	58 \| moderate	12.571 \| fine	15.776 \| good	25.212 \| good	0.263 \| good	7.336 \| good	0.141 \| good
2026-05-23T03:00:00.000Z	64 \| moderate	15.629 \| fine	18.858 \| good	22.018 \| good	0.277 \| good	7.544 \| good	0.141 \| good
2026-05-23T04:00:00.000Z	67 \| moderate	18.105 \| fine	22.694 \| good	20.001 \| good	0.287 \| good	7.431 \| good	0.144 \| good
2026-05-23T05:00:00.000Z	69 \| moderate	19.486 \| fine	22.299 \| good	19.649 \| good	0.285 \| good	6.823 \| good	0.142 \| good
2026-05-23T06:00:00.000Z	71 \| moderate	19.592 \| fine	22.143 \| good	19.37 \| good	0.286 \| good	5.621 \| good	0.14 \| good
2026-05-23T07:00:00.000Z	62 \| moderate	15.162 \| fine	20.055 \| good	23.732 \| good	0.323 \| good	4.195 \| good	0.142 \| good
2026-05-23T08:00:00.000Z	56 \| moderate	12.4 \| fine	17.939 \| good	30.528 \| good	0.276 \| good	3.132 \| good	0.135 \| good
2026-05-23T09:00:00.000Z	56 \| moderate	11.807 \| good	17.308 \| good	35.844 \| good	0.267 \| good	2.702 \| good	0.133 \| good
2026-05-23T10:00:00.000Z	54 \| moderate	10.904 \| good	16.94 \| good	40.672 \| good	0.209 \| good	1.742 \| good	0.125 \| good

Colchester

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

0.13ppm

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 Colchester, Essex?

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

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

In the past 24 hours, the air quality in Colchester, Essex was at its worst at 03:00:00 on 2026-05-20.

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

In the last 24 hours, the best air quality in Colchester, Essex was observed at 09:00:00 on 2026-05-21.

What is the AQI in Colchester, Essex right now?

As of now, the AQI in Colchester, Essex is 38, indicating Good conditions.

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

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

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

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

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

PM_2.5 levels in Colchester, Essex are currently 7.489 μg/m³.

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

The PM₁₀ concentration in Colchester, Essex is 10.974 μg/m³ at the moment.

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

The current carbon monoxide (CO) concentration in Colchester, Essex is 0.13 ppm.

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

Currently, Colchester, Essex has a sulfur dioxide (SO₂) concentration of 0.817 ppb.

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

The current ozone (O₃) level in Colchester, Essex at the moment is 27.659 ppm.

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

Nitrogen dioxide (NO₂) level in Colchester, Essex at the moment is 6.136 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-05-19T11:00:00.000Z	28 \| good	3.933 \| good	6.609 \| good	29.983 \| good	0.918 \| good	2.797 \| good	0.162 \| good
2026-05-19T12:00:00.000Z	28 \| good	3.98 \| good	5.553 \| good	29.576 \| good	0.946 \| good	3.513 \| good	0.137 \| good
2026-05-19T13:00:00.000Z	28 \| good	3 \| good	6.329 \| good	30.079 \| good	1.053 \| good	2.794 \| good	0.132 \| good
2026-05-19T14:00:00.000Z	31 \| good	3.128 \| good	7.368 \| good	32.957 \| good	0.723 \| good	2.531 \| good	0.131 \| good
2026-05-19T15:00:00.000Z	26 \| good	3.709 \| good	4.761 \| good	28.251 \| good	0.619 \| good	1.796 \| good	0.131 \| good
2026-05-19T16:00:00.000Z	29 \| good	4.142 \| good	9.041 \| good	30.943 \| good	0.727 \| good	3.027 \| good	0.13 \| good
2026-05-19T17:00:00.000Z	31 \| good	4.838 \| good	6.992 \| good	34.388 \| good	0.97 \| good	2.517 \| good	0.141 \| good
2026-05-19T18:00:00.000Z	31 \| good	4.002 \| good	9.445 \| good	32.84 \| good	0.798 \| good	2.686 \| good	0.17 \| good
2026-05-19T19:00:00.000Z	31 \| good	4.895 \| good	6.595 \| good	33.965 \| good	0.643 \| good	2.699 \| good	0.181 \| good
2026-05-19T20:00:00.000Z	33 \| good	5.448 \| good	10.537 \| good	36.212 \| good	0.873 \| good	2.893 \| good	0.221 \| good
2026-05-19T21:00:00.000Z	34 \| good	5.573 \| good	8.624 \| good	37.081 \| good	0.592 \| good	2.528 \| good	0.275 \| good
2026-05-19T22:00:00.000Z	35 \| good	5.629 \| good	12.337 \| good	37.76 \| good	0.77 \| good	2.484 \| good	0.294 \| good
2026-05-19T23:00:00.000Z	33 \| good	5.606 \| good	9.65 \| good	32.327 \| good	0.943 \| good	2.901 \| good	0.306 \| good
2026-05-20T00:00:00.000Z	33 \| good	6.229 \| good	16.855 \| good	35.528 \| good	0.815 \| good	1.974 \| good	0.282 \| good
2026-05-20T01:00:00.000Z	33 \| good	5.741 \| good	13.384 \| good	34.37 \| good	0.815 \| good	2.097 \| good	0.225 \| good
2026-05-20T02:00:00.000Z	38 \| good	6.521 \| good	14.328 \| good	35.267 \| good	0.815 \| good	2.313 \| good	0.179 \| good
2026-05-20T03:00:00.000Z	38 \| good	6.718 \| good	16.787 \| good	36.566 \| good	0.74 \| good	2.31 \| good	0.165 \| good
2026-05-20T04:00:00.000Z	44 \| good	7.546 \| good	22.097 \| good	35.092 \| good	0.762 \| good	2.498 \| good	0.191 \| good
2026-05-20T05:00:00.000Z	49 \| good	8.71 \| good	14.048 \| good	34.169 \| good	0.761 \| good	2.227 \| good	0.191 \| good
2026-05-20T06:00:00.000Z	49 \| good	9.203 \| good	26.495 \| good	37.611 \| good	1.079 \| good	1.881 \| good	0.21 \| good
2026-05-20T07:00:00.000Z	52 \| moderate	9.924 \| good	21.476 \| good	35.911 \| good	1.238 \| good	3.077 \| good	0.179 \| good
2026-05-20T08:00:00.000Z	52 \| moderate	9.858 \| good	17.457 \| good	35.09 \| good	1.253 \| good	3.479 \| good	0.179 \| good
2026-05-20T09:00:00.000Z	49 \| good	9.329 \| good	22.693 \| good	34.362 \| good	1.295 \| good	4.309 \| good	0.163 \| good
2026-05-20T10:00:00.000Z	52 \| moderate	9.818 \| good	15.75 \| good	32.614 \| good	1.168 \| good	3.247 \| good	0.156 \| good
2026-05-20T11:00:00.000Z	49 \| good	9.347 \| good	17.738 \| good	34.19 \| good	1.225 \| good	2.579 \| good	0.146 \| good
2026-05-20T12:00:00.000Z	52 \| moderate	10.348 \| good	15.363 \| good	32.781 \| good	1.081 \| good	2.633 \| good	0.163 \| good
2026-05-20T13:00:00.000Z	49 \| good	8.676 \| good	16.204 \| good	34.464 \| good	1.132 \| good	3.465 \| good	0.16 \| good
2026-05-20T14:00:00.000Z	52 \| moderate	9.609 \| good	16.34 \| good	33.655 \| good	1.527 \| good	3.072 \| good	0.158 \| good
2026-05-20T15:00:00.000Z	54 \| moderate	10.85 \| good	13.251 \| good	35.766 \| good	1.368 \| good	3.004 \| good	0.134 \| good
2026-05-20T16:00:00.000Z	52 \| moderate	10.423 \| good	16.263 \| good	37.522 \| good	1.369 \| good	3.602 \| good	0.162 \| good
2026-05-20T17:00:00.000Z	52 \| moderate	10.151 \| good	15.91 \| good	38.262 \| good	1.023 \| good	2.392 \| good	0.182 \| good
2026-05-20T18:00:00.000Z	49 \| good	9.419 \| good	16.033 \| good	38.066 \| good	1.107 \| good	3.292 \| good	0.194 \| good
2026-05-20T19:00:00.000Z	49 \| good	8.881 \| good	12.992 \| good	39.332 \| good	0.656 \| good	4.385 \| good	0.239 \| good
2026-05-20T20:00:00.000Z	44 \| good	8.373 \| good	13.035 \| good	40.519 \| good	0.631 \| good	3.877 \| good	0.234 \| good
2026-05-20T21:00:00.000Z	44 \| good	8.231 \| good	12.567 \| good	37.771 \| good	0.715 \| good	3.993 \| good	0.219 \| good
2026-05-20T22:00:00.000Z	44 \| good	8.116 \| good	10.961 \| good	33.573 \| good	0.661 \| good	4.949 \| good	0.238 \| good
2026-05-20T23:00:00.000Z	38 \| good	7.417 \| good	12.564 \| good	30.194 \| good	0.989 \| good	6.31 \| good	0.233 \| good
2026-05-21T00:00:00.000Z	38 \| good	6.677 \| good	12.703 \| good	25.522 \| good	0.903 \| good	5.285 \| good	0.217 \| good
2026-05-21T01:00:00.000Z	38 \| good	7.092 \| good	12.382 \| good	16.894 \| good	0.682 \| good	4.73 \| good	0.221 \| good
2026-05-21T02:00:00.000Z	49 \| good	8.529 \| good	17.94 \| good	17.769 \| good	0.682 \| good	4.794 \| good	0.179 \| good
2026-05-21T03:00:00.000Z	49 \| good	8.828 \| good	17.798 \| good	19.002 \| good	0.573 \| good	4.918 \| good	0.167 \| good
2026-05-21T04:00:00.000Z	38 \| good	7.47 \| good	15.29 \| good	23.982 \| good	0.612 \| good	6.139 \| good	0.191 \| good
2026-05-21T05:00:00.000Z	38 \| good	7.122 \| good	12.705 \| good	26.125 \| good	0.539 \| good	3.086 \| good	0.19 \| good
2026-05-21T06:00:00.000Z	44 \| good	7.756 \| good	12.783 \| good	27.371 \| good	0.91 \| good	5.68 \| good	0.172 \| good
2026-05-21T07:00:00.000Z	38 \| good	6.908 \| good	13.602 \| good	26.62 \| good	0.976 \| good	4.816 \| good	0.148 \| good
2026-05-21T08:00:00.000Z	38 \| good	6.965 \| good	14.745 \| good	25.949 \| good	0.968 \| good	6.367 \| good	0.139 \| good
2026-05-21T09:00:00.000Z	38 \| good	7.489 \| good	10.974 \| good	27.659 \| good	0.817 \| good	6.136 \| good	0.13 \| good
2026-05-21T10:00:00.000Z	38 \| good	7.489 \| good	10.974 \| good	27.659 \| good	0.817 \| good	6.136 \| good	0.13 \| good
2026-05-21T11:00:00.000Z	44 \| good	7.66 \| good	11.083 \| good	37.606 \| good	0.196 \| good	2.891 \| good	0.116 \| good
2026-05-21T12:00:00.000Z	38 \| good	7.162 \| good	10.862 \| good	37.936 \| good	0.178 \| good	2.692 \| good	0.115 \| good
2026-05-21T13:00:00.000Z	38 \| good	6.81 \| good	10.494 \| good	38.367 \| good	0.159 \| good	2.31 \| good	0.113 \| good
2026-05-21T14:00:00.000Z	38 \| good	6.507 \| good	10.483 \| good	39.466 \| good	0.147 \| good	1.852 \| good	0.111 \| good
2026-05-21T15:00:00.000Z	37 \| good	6.453 \| good	10.43 \| good	39.936 \| good	0.142 \| good	1.764 \| good	0.112 \| good
2026-05-21T16:00:00.000Z	37 \| good	6.293 \| good	10.249 \| good	40.114 \| good	0.143 \| good	1.971 \| good	0.113 \| good
2026-05-21T17:00:00.000Z	36 \| good	6.155 \| good	10.057 \| good	38.943 \| good	0.17 \| good	2.377 \| good	0.117 \| good
2026-05-21T18:00:00.000Z	34 \| good	6.236 \| good	10.051 \| good	37.276 \| good	0.177 \| good	2.567 \| good	0.116 \| good
2026-05-21T19:00:00.000Z	33 \| good	6.269 \| good	10.155 \| good	33.677 \| good	0.214 \| good	3.32 \| good	0.117 \| good
2026-05-21T20:00:00.000Z	33 \| good	6.216 \| good	10.6 \| good	32.209 \| good	0.234 \| good	4.101 \| good	0.118 \| good
2026-05-21T21:00:00.000Z	33 \| good	6.483 \| good	10.763 \| good	31.199 \| good	0.237 \| good	4.843 \| good	0.119 \| good
2026-05-21T22:00:00.000Z	38 \| good	6.945 \| good	11.176 \| good	28.362 \| good	0.239 \| good	5.596 \| good	0.121 \| good
2026-05-21T23:00:00.000Z	38 \| good	7.432 \| good	11.042 \| good	26.514 \| good	0.199 \| good	5.933 \| good	0.123 \| good
2026-05-22T00:00:00.000Z	44 \| good	8.151 \| good	11.301 \| good	25.174 \| good	0.188 \| good	5.669 \| good	0.122 \| good
2026-05-22T01:00:00.000Z	49 \| good	9.421 \| good	12.943 \| good	24.378 \| good	0.193 \| good	5.019 \| good	0.121 \| good
2026-05-22T02:00:00.000Z	52 \| moderate	10.196 \| good	13.103 \| good	24.025 \| good	0.193 \| good	4.716 \| good	0.119 \| good
2026-05-22T03:00:00.000Z	56 \| moderate	11.533 \| good	15.172 \| good	22.581 \| good	0.216 \| good	5.204 \| good	0.119 \| good
2026-05-22T04:00:00.000Z	60 \| moderate	14.24 \| fine	18.939 \| good	23.042 \| good	0.339 \| good	8.595 \| good	0.123 \| good
2026-05-22T05:00:00.000Z	66 \| moderate	17.294 \| fine	21.429 \| good	22.072 \| good	0.741 \| good	11.346 \| good	0.153 \| good
2026-05-22T06:00:00.000Z	64 \| moderate	15.695 \| fine	20.668 \| good	24.281 \| good	0.616 \| good	10.529 \| good	0.159 \| good
2026-05-22T07:00:00.000Z	60 \| moderate	13.928 \| fine	18.382 \| good	27.193 \| good	0.329 \| good	8.027 \| good	0.155 \| good
2026-05-22T08:00:00.000Z	56 \| moderate	12.496 \| fine	15.65 \| good	32.854 \| good	0.26 \| good	5.459 \| good	0.145 \| good
2026-05-22T09:00:00.000Z	54 \| moderate	11.039 \| good	14.902 \| good	37.589 \| good	0.249 \| good	3.774 \| good	0.135 \| good
2026-05-22T10:00:00.000Z	52 \| moderate	10.218 \| good	14.771 \| good	44.894 \| good	0.219 \| good	2.258 \| good	0.131 \| good
2026-05-22T11:00:00.000Z	49 \| good	8.581 \| good	13.92 \| good	48.357 \| good	0.202 \| good	1.718 \| good	0.129 \| good
2026-05-22T12:00:00.000Z	46 \| good	7.284 \| good	12.183 \| good	50.039 \| good	0.169 \| good	1.42 \| good	0.123 \| good
2026-05-22T13:00:00.000Z	47 \| good	6.611 \| good	10.679 \| good	50.992 \| good	0.147 \| good	1.25 \| good	0.119 \| good
2026-05-22T14:00:00.000Z	48 \| good	6.215 \| good	10.29 \| good	52.078 \| good	0.127 \| good	1.194 \| good	0.117 \| good
2026-05-22T15:00:00.000Z	48 \| good	5.977 \| good	9.78 \| good	52.475 \| good	0.118 \| good	1.222 \| good	0.116 \| good
2026-05-22T16:00:00.000Z	47 \| good	5.779 \| good	9.635 \| good	51.04 \| good	0.115 \| good	1.39 \| good	0.116 \| good
2026-05-22T17:00:00.000Z	45 \| good	5.724 \| good	9.153 \| good	48.908 \| good	0.129 \| good	1.694 \| good	0.117 \| good
2026-05-22T18:00:00.000Z	44 \| good	5.641 \| good	9.331 \| good	47.136 \| good	0.146 \| good	2.279 \| good	0.118 \| good
2026-05-22T19:00:00.000Z	41 \| good	5.566 \| good	9.338 \| good	43.649 \| good	0.171 \| good	2.971 \| good	0.116 \| good
2026-05-22T20:00:00.000Z	40 \| good	5.85 \| good	9.108 \| good	42.65 \| good	0.191 \| good	3.323 \| good	0.118 \| good
2026-05-22T21:00:00.000Z	36 \| good	6.158 \| good	9.522 \| good	39.266 \| good	0.224 \| good	4.236 \| good	0.121 \| good
2026-05-22T22:00:00.000Z	38 \| good	6.748 \| good	10.449 \| good	34.362 \| good	0.251 \| good	5.322 \| good	0.123 \| good
2026-05-22T23:00:00.000Z	44 \| good	7.56 \| good	11.132 \| good	31.736 \| good	0.277 \| good	6.309 \| good	0.129 \| good
2026-05-23T00:00:00.000Z	49 \| good	8.62 \| good	11.949 \| good	29.046 \| good	0.275 \| good	6.807 \| good	0.135 \| good
2026-05-23T01:00:00.000Z	52 \| moderate	10.448 \| good	13.207 \| good	27.467 \| good	0.265 \| good	7.132 \| good	0.14 \| good
2026-05-23T02:00:00.000Z	58 \| moderate	12.571 \| fine	15.776 \| good	25.212 \| good	0.263 \| good	7.336 \| good	0.141 \| good
2026-05-23T03:00:00.000Z	64 \| moderate	15.629 \| fine	18.858 \| good	22.018 \| good	0.277 \| good	7.544 \| good	0.141 \| good
2026-05-23T04:00:00.000Z	67 \| moderate	18.105 \| fine	22.694 \| good	20.001 \| good	0.287 \| good	7.431 \| good	0.144 \| good
2026-05-23T05:00:00.000Z	69 \| moderate	19.486 \| fine	22.299 \| good	19.649 \| good	0.285 \| good	6.823 \| good	0.142 \| good
2026-05-23T06:00:00.000Z	71 \| moderate	19.592 \| fine	22.143 \| good	19.37 \| good	0.286 \| good	5.621 \| good	0.14 \| good
2026-05-23T07:00:00.000Z	62 \| moderate	15.162 \| fine	20.055 \| good	23.732 \| good	0.323 \| good	4.195 \| good	0.142 \| good
2026-05-23T08:00:00.000Z	56 \| moderate	12.4 \| fine	17.939 \| good	30.528 \| good	0.276 \| good	3.132 \| good	0.135 \| good
2026-05-23T09:00:00.000Z	56 \| moderate	11.807 \| good	17.308 \| good	35.844 \| good	0.267 \| good	2.702 \| good	0.133 \| good
2026-05-23T10:00:00.000Z	54 \| moderate	10.904 \| good	16.94 \| good	40.672 \| good	0.209 \| good	1.742 \| good	0.125 \| good

Live air quality index in Colchester, Essex today

Major air pollutants in Colchester, Essex

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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

Air quality in nearby cities

Halstead, Essex

Sudbury, Suffolk

Witham, Essex

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Braintree, Essex

Maldon, Essex

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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 Colchester, Essex at the moment?

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