What are the current PM10 levels at Chorleywood, Hertfordshire?

The current PM10 levels in Chorleywood, Hertfordshire are 107.049 μg/m3.

What are the current sulfur dioxide (SO2) levels at Chorleywood, Hertfordshire?

The current sulfur dioxide (SO2) levels in Chorleywood, Hertfordshire are 0.752 ppb.

What are the current ozone (O3) levels at Chorleywood, Hertfordshire?

The current ozone (O3) levels at Chorleywood, Hertfordshire is 21.377 ppm.

What are the current nitrogen dioxide (NO2) levels at Chorleywood, Hertfordshire?

The current nitrogen dioxide (NO2) levels at Chorleywood, Hertfordshire is 14.511 ppb.

Real-time air quality index in Chorleywood, Hertfordshire today

Q: What are the current PM2.5 levels in Chorleywood, Hertfordshire?

The measured PM2.5 levels in Chorleywood, Hertfordshire at present are 29.42 μg/m3.

Stay updated with real-time air quality in Chorleywood, Hertfordshire 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

Chorleywood, Hertfordshire

Last updated: ... (Local time)

Common air pollutants in Chorleywood, Hertfordshire

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

29.42 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

107.05 μg/m³

155

255

425

605+

Ozone (O₃)

21.38 ppb

201

201+

Sulfur Dioxide (SO₂)

0.75 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

14.51 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.02 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

Chorleywood, Hertfordshire

Get Live Pollen Counts

Chorleywood, Hertfordshire

Scroll To Air Quality Map

Track live Chorleywood, Hertfordshire air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-07T12:00:00.000Z	44 \| good	8.467 \| good	9.283 \| good	21.545 \| good	0.751 \| good	4.811 \| good	0.01 \| good
2026-03-07T13:00:00.000Z	38 \| good	7.192 \| good	10.274 \| good	26.762 \| good	0.756 \| good	9.718 \| good	0.008 \| good
2026-03-07T14:00:00.000Z	33 \| good	6.37 \| good	8.352 \| good	28.903 \| good	0.682 \| good	5.305 \| good	0.008 \| good
2026-03-07T15:00:00.000Z	33 \| good	6.121 \| good	7.772 \| good	27.729 \| good	0.831 \| good	7.961 \| good	0.008 \| good
2026-03-07T16:00:00.000Z	38 \| good	6.899 \| good	9.14 \| good	28.663 \| good	0.818 \| good	9.099 \| good	0.009 \| good
2026-03-07T17:00:00.000Z	38 \| good	6.948 \| good	10.685 \| good	26.878 \| good	0.767 \| good	6.632 \| good	0.013 \| good
2026-03-07T18:00:00.000Z	26 \| good	2.8 \| good	25.774 \| good	28.193 \| good	0.734 \| good	7.227 \| good	0.013 \| good
2026-03-07T19:00:00.000Z	38 \| good	7.28 \| good	10.34 \| good	31.084 \| good	0.761 \| good	7.003 \| good	0.016 \| good
2026-03-07T20:00:00.000Z	23 \| good	4.34 \| good	5.117 \| good	24.931 \| good	0.774 \| good	6.5 \| good	0.027 \| good
2026-03-07T21:00:00.000Z	30 \| good	2.7 \| good	31.758 \| good	25.203 \| good	0.856 \| good	10.408 \| good	0.038 \| good
2026-03-07T22:00:00.000Z	23 \| good	2.1 \| good	10.448 \| good	24.781 \| good	0.863 \| good	9.766 \| good	0.04 \| good
2026-03-07T23:00:00.000Z	33 \| good	6.105 \| good	9.284 \| good	28.663 \| good	0.699 \| good	11.04 \| good	0.046 \| good
2026-03-08T00:00:00.000Z	60 \| moderate	14.071 \| fine	23.347 \| good	22.614 \| good	0.784 \| good	12.586 \| good	1.005 \| good
2026-03-08T01:00:00.000Z	44 \| good	7.632 \| good	28.441 \| good	23.133 \| good	0.695 \| good	9.867 \| good	0.879 \| good
2026-03-08T02:00:00.000Z	52 \| moderate	10.361 \| good	25.797 \| good	21.973 \| good	0.697 \| good	9.093 \| good	0.798 \| good
2026-03-08T03:00:00.000Z	64 \| moderate	16.46 \| fine	20.317 \| good	24.553 \| good	0.713 \| good	4.71 \| good	0.658 \| good
2026-03-08T04:00:00.000Z	66 \| moderate	16.82 \| fine	41.624 \| good	25.877 \| good	0.603 \| good	2.647 \| good	0.634 \| good
2026-03-08T05:00:00.000Z	49 \| good	9.01 \| good	37.539 \| good	23.749 \| good	0.817 \| good	4.094 \| good	0.6 \| good
2026-03-08T06:00:00.000Z	54 \| moderate	11.255 \| good	23.04 \| good	24.774 \| good	0.701 \| good	3.209 \| good	0.528 \| good
2026-03-08T07:00:00.000Z	58 \| moderate	13.312 \| fine	27.8 \| good	24.785 \| good	0.68 \| good	4.479 \| good	0.021 \| good
2026-03-08T08:00:00.000Z	67 \| moderate	17.843 \| fine	28.52 \| good	24.777 \| good	0.696 \| good	7.062 \| good	0.022 \| good
2026-03-08T09:00:00.000Z	58 \| moderate	13.238 \| fine	25.56 \| good	24.887 \| good	0.781 \| good	6.536 \| good	0.022 \| good
2026-03-08T10:00:00.000Z	58 \| moderate	12.965 \| fine	23.608 \| good	28.178 \| good	0.919 \| good	6.382 \| good	0.016 \| good
2026-03-08T11:00:00.000Z	66 \| moderate	17.201 \| fine	38.151 \| good	24.378 \| good	0.758 \| good	7.571 \| good	0.012 \| good
2026-03-08T12:00:00.000Z	64 \| moderate	15.714 \| fine	37.376 \| good	21.577 \| good	0.672 \| good	7.088 \| good	0.009 \| good
2026-03-08T13:00:00.000Z	60 \| moderate	14.318 \| fine	22.031 \| good	21.362 \| good	0.738 \| good	13.638 \| good	0.008 \| good
2026-03-08T14:00:00.000Z	49 \| good	9.43 \| good	32.527 \| good	23.824 \| good	0.903 \| good	8.417 \| good	0.008 \| good
2026-03-08T15:00:00.000Z	60 \| moderate	13.857 \| fine	40.68 \| good	22.536 \| good	0.707 \| good	10.44 \| good	0.009 \| good
2026-03-08T16:00:00.000Z	62 \| moderate	15.468 \| fine	22.944 \| good	25.857 \| good	0.808 \| good	16.213 \| good	0.01 \| good
2026-03-08T17:00:00.000Z	66 \| moderate	17.025 \| fine	24.334 \| good	24.537 \| good	0.822 \| good	11.959 \| good	0.014 \| good
2026-03-08T18:00:00.000Z	49 \| good	9.228 \| good	27.231 \| good	25.269 \| good	0.84 \| good	14.117 \| good	0.018 \| good
2026-03-08T19:00:00.000Z	62 \| moderate	14.865 \| fine	27.56 \| good	21.028 \| good	0.848 \| good	10.979 \| good	0.029 \| good
2026-03-08T20:00:00.000Z	75 \| moderate	21.733 \| fine	25.262 \| good	23.47 \| good	0.827 \| good	8.458 \| good	0.025 \| good
2026-03-08T21:00:00.000Z	64 \| moderate	16.41 \| fine	30.84 \| good	22.897 \| good	0.819 \| good	14.541 \| good	0.04 \| good
2026-03-08T22:00:00.000Z	75 \| moderate	22.002 \| fine	31.932 \| good	22.098 \| good	0.914 \| good	10.12 \| good	0.049 \| good
2026-03-08T23:00:00.000Z	77 \| moderate	23.229 \| fine	37.549 \| good	19.341 \| good	0.775 \| good	15.243 \| good	0.037 \| good
2026-03-09T00:00:00.000Z	75 \| moderate	21.725 \| fine	62.816 \| fine	19.117 \| good	0.845 \| good	13.319 \| good	0.735 \| good
2026-03-09T01:00:00.000Z	84 \| moderate	27.025 \| fine	66.66 \| fine	19.899 \| good	0.73 \| good	9.136 \| good	0.646 \| good
2026-03-09T02:00:00.000Z	90 \| moderate	30.192 \| fine	62.33 \| fine	17.666 \| good	0.688 \| good	9.392 \| good	0.67 \| good
2026-03-09T03:00:00.000Z	96 \| moderate	32.759 \| fine	51.144 \| good	20.195 \| good	0.688 \| good	8.106 \| good	0.538 \| good
2026-03-09T04:00:00.000Z	97 \| moderate	33.719 \| fine	38.879 \| good	18.398 \| good	0.684 \| good	6.908 \| good	0.495 \| good
2026-03-09T05:00:00.000Z	77 \| moderate	23.423 \| fine	73.354 \| fine	19.777 \| good	0.804 \| good	5.275 \| good	0.462 \| good
2026-03-09T06:00:00.000Z	88 \| moderate	28.52 \| fine	73.132 \| fine	18.818 \| good	0.781 \| good	4.368 \| good	0.457 \| good
2026-03-09T07:00:00.000Z	77 \| moderate	23.279 \| fine	96.914 \| fine	20.765 \| good	0.824 \| good	5.726 \| good	0.024 \| good
2026-03-09T08:00:00.000Z	107 \| sensitive	38.487 \| moderate	46.768 \| good	21.171 \| good	0.48 \| good	9.269 \| good	0.025 \| good
2026-03-09T09:00:00.000Z	97 \| moderate	34.371 \| fine	45.461 \| good	23.874 \| good	0.553 \| good	11.113 \| good	0.02 \| good
2026-03-09T10:00:00.000Z	110 \| sensitive	39.28 \| moderate	50.908 \| good	22.1 \| good	0.621 \| good	11.48 \| good	0.017 \| good
2026-03-09T11:00:00.000Z	88 \| moderate	29.42 \| fine	107.049 \| fine	21.377 \| good	0.752 \| good	14.511 \| good	0.017 \| good
2026-03-09T11:00:00.000Z	88 \| moderate	29.42 \| fine	107.049 \| fine	21.377 \| good	0.752 \| good	14.511 \| good	0.017 \| good
2026-03-09T12:00:00.000Z	142 \| sensitive	52.054 \| moderate	56.099 \| fine	11.93 \| good	0.909 \| good	22.377 \| good	0.306 \| good
2026-03-09T13:00:00.000Z	129 \| sensitive	47.326 \| moderate	51.699 \| good	14.908 \| good	0.763 \| good	20.106 \| good	0.283 \| good
2026-03-09T14:00:00.000Z	115 \| sensitive	40.804 \| moderate	46.854 \| good	19.856 \| good	0.627 \| good	17.449 \| good	0.253 \| good
2026-03-09T15:00:00.000Z	102 \| sensitive	36.072 \| moderate	45.247 \| good	22.989 \| good	0.489 \| good	15.09 \| good	0.225 \| good
2026-03-09T16:00:00.000Z	90 \| moderate	30.002 \| fine	39.383 \| good	27.341 \| good	0.456 \| good	13.493 \| good	0.204 \| good
2026-03-09T17:00:00.000Z	82 \| moderate	26.269 \| fine	34.308 \| good	22.196 \| good	0.573 \| good	15.208 \| good	0.214 \| good
2026-03-09T18:00:00.000Z	84 \| moderate	27.15 \| fine	35.382 \| good	14.879 \| good	0.818 \| good	21.455 \| good	0.249 \| good
2026-03-09T19:00:00.000Z	90 \| moderate	29.958 \| fine	37.118 \| good	8.77 \| good	0.905 \| good	26.922 \| good	0.292 \| good
2026-03-09T20:00:00.000Z	86 \| moderate	27.785 \| fine	31.376 \| good	5.307 \| good	0.963 \| good	31.563 \| good	0.292 \| good
2026-03-09T21:00:00.000Z	79 \| moderate	23.684 \| fine	27.119 \| good	6.899 \| good	0.738 \| good	25.549 \| good	0.248 \| good
2026-03-09T22:00:00.000Z	81 \| moderate	24.686 \| fine	28.039 \| good	9.7 \| good	0.711 \| good	22.028 \| good	0.226 \| good
2026-03-09T23:00:00.000Z	81 \| moderate	24.779 \| fine	29.605 \| good	11.312 \| good	0.638 \| good	20.958 \| good	0.217 \| good
2026-03-10T00:00:00.000Z	79 \| moderate	24.487 \| fine	28.998 \| good	12.262 \| good	0.569 \| good	18.706 \| good	0.201 \| good
2026-03-10T01:00:00.000Z	79 \| moderate	23.508 \| fine	27.889 \| good	17.661 \| good	0.472 \| good	13.358 \| good	0.178 \| good
2026-03-10T02:00:00.000Z	75 \| moderate	22.456 \| fine	27.146 \| good	20.313 \| good	0.308 \| good	10.444 \| good	0.159 \| good
2026-03-10T03:00:00.000Z	73 \| moderate	21.237 \| fine	27.497 \| good	22.759 \| good	0.272 \| good	8.359 \| good	0.148 \| good
2026-03-10T04:00:00.000Z	67 \| moderate	18.247 \| fine	21.826 \| good	24.918 \| good	0.267 \| good	5.838 \| good	0.143 \| good
2026-03-10T05:00:00.000Z	66 \| moderate	17.069 \| fine	20.535 \| good	25.834 \| good	0.259 \| good	4.844 \| good	0.142 \| good
2026-03-10T06:00:00.000Z	64 \| moderate	16.429 \| fine	20.079 \| good	23.935 \| good	0.307 \| good	4.926 \| good	0.142 \| good
2026-03-10T07:00:00.000Z	64 \| moderate	16.309 \| fine	20.768 \| good	21.523 \| good	0.357 \| good	7.011 \| good	0.149 \| good
2026-03-10T08:00:00.000Z	64 \| moderate	16.323 \| fine	20.563 \| good	20.795 \| good	0.463 \| good	9.751 \| good	0.154 \| good
2026-03-10T09:00:00.000Z	64 \| moderate	15.827 \| fine	18.962 \| good	20.776 \| good	0.511 \| good	10.055 \| good	0.156 \| good
2026-03-10T10:00:00.000Z	62 \| moderate	15.467 \| fine	18.5 \| good	21.99 \| good	0.419 \| good	9.437 \| good	0.155 \| good
2026-03-10T11:00:00.000Z	64 \| moderate	15.623 \| fine	17.531 \| good	28.223 \| good	0.33 \| good	6.426 \| good	0.15 \| good
2026-03-10T12:00:00.000Z	58 \| moderate	12.732 \| fine	15.128 \| good	30.341 \| good	0.281 \| good	5.404 \| good	0.146 \| good
2026-03-10T13:00:00.000Z	54 \| moderate	10.943 \| good	13.004 \| good	30.586 \| good	0.261 \| good	4.834 \| good	0.143 \| good
2026-03-10T14:00:00.000Z	54 \| moderate	11.012 \| good	12.129 \| good	30.544 \| good	0.263 \| good	5.024 \| good	0.142 \| good
2026-03-10T15:00:00.000Z	52 \| moderate	10.039 \| good	11.957 \| good	30.468 \| good	0.254 \| good	5.387 \| good	0.142 \| good
2026-03-10T16:00:00.000Z	49 \| good	8.547 \| good	11.011 \| good	34.881 \| good	0.251 \| good	4.916 \| good	0.144 \| good
2026-03-10T17:00:00.000Z	38 \| good	7.001 \| good	9.918 \| good	35.45 \| good	0.28 \| good	6.213 \| good	0.145 \| good
2026-03-10T18:00:00.000Z	38 \| good	7.448 \| good	9.953 \| good	30.596 \| good	0.431 \| good	9.215 \| good	0.155 \| good
2026-03-10T19:00:00.000Z	38 \| good	6.959 \| good	9.791 \| good	29.789 \| good	0.593 \| good	12.065 \| good	0.16 \| good
2026-03-10T20:00:00.000Z	44 \| good	8.285 \| good	10.822 \| good	27.757 \| good	0.663 \| good	13.246 \| good	0.16 \| good
2026-03-10T21:00:00.000Z	52 \| moderate	9.697 \| good	11.61 \| good	27.083 \| good	0.677 \| good	11.874 \| good	0.159 \| good
2026-03-10T22:00:00.000Z	52 \| moderate	9.948 \| good	12.427 \| good	27.427 \| good	0.625 \| good	10.268 \| good	0.154 \| good
2026-03-10T23:00:00.000Z	44 \| good	8.458 \| good	12.492 \| good	29.741 \| good	0.54 \| good	8.087 \| good	0.149 \| good
2026-03-11T00:00:00.000Z	38 \| good	6.524 \| good	9.761 \| good	34.173 \| good	0.447 \| good	5.712 \| good	0.141 \| good
2026-03-11T01:00:00.000Z	32 \| good	5.086 \| good	8.652 \| good	35.245 \| good	0.398 \| good	4.422 \| good	0.134 \| good
2026-03-11T02:00:00.000Z	35 \| good	4.329 \| good	8.061 \| good	37.651 \| good	0.342 \| good	3.59 \| good	0.131 \| good
2026-03-11T03:00:00.000Z	34 \| good	4.228 \| good	7.711 \| good	36.761 \| good	0.318 \| good	3.153 \| good	0.13 \| good
2026-03-11T04:00:00.000Z	35 \| good	3.482 \| good	6.78 \| good	38.372 \| good	0.227 \| good	2.858 \| good	0.128 \| good
2026-03-11T05:00:00.000Z	36 \| good	3.384 \| good	5.562 \| good	38.864 \| good	0.179 \| good	2.321 \| good	0.127 \| good
2026-03-11T06:00:00.000Z	36 \| good	3.211 \| good	5.067 \| good	39.018 \| good	0.221 \| good	2.405 \| good	0.128 \| good
2026-03-11T07:00:00.000Z	35 \| good	2.82 \| good	3.993 \| good	37.688 \| good	0.251 \| good	3.226 \| good	0.132 \| good
2026-03-11T08:00:00.000Z	33 \| good	2.745 \| good	3.847 \| good	35.763 \| good	0.261 \| good	4.751 \| good	0.134 \| good
2026-03-11T09:00:00.000Z	31 \| good	2.9 \| good	3.764 \| good	34.377 \| good	0.328 \| good	5.508 \| good	0.135 \| good
2026-03-11T10:00:00.000Z	31 \| good	2.825 \| good	3.978 \| good	33.152 \| good	0.289 \| good	4.755 \| good	0.133 \| good
2026-03-11T11:00:00.000Z	32 \| good	2.922 \| good	4.495 \| good	34.824 \| good	0.25 \| good	3.474 \| good	0.129 \| good

Chorleywood

Empower business decisions with accurate air quality data

Chorleywood, Hertfordshire air quality map: Real-time AQI near you

0.03ppm

How accurate is Hertfordshire, UK air quality data?

Air quality measurements for Hertfordshire, UK meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.

Source: Ambee Data Sources

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Frequently asked questions

How frequently is the air quality data for Chorleywood, Hertfordshire updated?

Air quality data for Chorleywood, Hertfordshire is updated on an hourly basis.

When did Chorleywood, Hertfordshire experience the worst air quality in the last 24 hours?

The worst air quality in Chorleywood, Hertfordshire was recorded at 10:00:00 on 2026-03-09.

When did Chorleywood, Hertfordshire have its best air quality in the last 24 hours?

The best air quality in Chorleywood, Hertfordshire was recorded at 06:00:00 on 2026-03-08.

What is the real-time air quality index for Chorleywood, Hertfordshire?

The real-time air quality index in Chorleywood, Hertfordshire is 88, currently categorized as Moderate.

Which pollutant is found most often in Chorleywood, Hertfordshire?

The most common pollutant in Chorleywood, Hertfordshire is PM2.5.

What can I do if the air quality in Chorleywood, Hertfordshire is poor?

If the air quality in Chorleywood, Hertfordshire is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in Chorleywood, Hertfordshire?

The measured PM_2.5 levels in Chorleywood, Hertfordshire at present are 29.42 μg/m³.

What are the current PM₁₀ levels at Chorleywood, Hertfordshire?

The current PM₁₀ levels in Chorleywood, Hertfordshire are 107.049 μg/m³.

What are the current carbon monoxide (CO) levels at Chorleywood, Hertfordshire?

The current carbon monoxide (CO) level in Chorleywood, Hertfordshire is 0.017 ppm.

What are the current sulfur dioxide (SO₂) levels at Chorleywood, Hertfordshire?

The current sulfur dioxide (SO₂) levels in Chorleywood, Hertfordshire are 0.752 ppb.

What are the current ozone (O₃) levels at Chorleywood, Hertfordshire?

The current ozone (O₃) levels at Chorleywood, Hertfordshire is 21.377 ppm.

What are the current nitrogen dioxide (NO₂) levels at Chorleywood, Hertfordshire?

The current nitrogen dioxide (NO₂) levels at Chorleywood, Hertfordshire is 14.511 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-07T12:00:00.000Z	44 \| good	8.467 \| good	9.283 \| good	21.545 \| good	0.751 \| good	4.811 \| good	0.01 \| good
2026-03-07T13:00:00.000Z	38 \| good	7.192 \| good	10.274 \| good	26.762 \| good	0.756 \| good	9.718 \| good	0.008 \| good
2026-03-07T14:00:00.000Z	33 \| good	6.37 \| good	8.352 \| good	28.903 \| good	0.682 \| good	5.305 \| good	0.008 \| good
2026-03-07T15:00:00.000Z	33 \| good	6.121 \| good	7.772 \| good	27.729 \| good	0.831 \| good	7.961 \| good	0.008 \| good
2026-03-07T16:00:00.000Z	38 \| good	6.899 \| good	9.14 \| good	28.663 \| good	0.818 \| good	9.099 \| good	0.009 \| good
2026-03-07T17:00:00.000Z	38 \| good	6.948 \| good	10.685 \| good	26.878 \| good	0.767 \| good	6.632 \| good	0.013 \| good
2026-03-07T18:00:00.000Z	26 \| good	2.8 \| good	25.774 \| good	28.193 \| good	0.734 \| good	7.227 \| good	0.013 \| good
2026-03-07T19:00:00.000Z	38 \| good	7.28 \| good	10.34 \| good	31.084 \| good	0.761 \| good	7.003 \| good	0.016 \| good
2026-03-07T20:00:00.000Z	23 \| good	4.34 \| good	5.117 \| good	24.931 \| good	0.774 \| good	6.5 \| good	0.027 \| good
2026-03-07T21:00:00.000Z	30 \| good	2.7 \| good	31.758 \| good	25.203 \| good	0.856 \| good	10.408 \| good	0.038 \| good
2026-03-07T22:00:00.000Z	23 \| good	2.1 \| good	10.448 \| good	24.781 \| good	0.863 \| good	9.766 \| good	0.04 \| good
2026-03-07T23:00:00.000Z	33 \| good	6.105 \| good	9.284 \| good	28.663 \| good	0.699 \| good	11.04 \| good	0.046 \| good
2026-03-08T00:00:00.000Z	60 \| moderate	14.071 \| fine	23.347 \| good	22.614 \| good	0.784 \| good	12.586 \| good	1.005 \| good
2026-03-08T01:00:00.000Z	44 \| good	7.632 \| good	28.441 \| good	23.133 \| good	0.695 \| good	9.867 \| good	0.879 \| good
2026-03-08T02:00:00.000Z	52 \| moderate	10.361 \| good	25.797 \| good	21.973 \| good	0.697 \| good	9.093 \| good	0.798 \| good
2026-03-08T03:00:00.000Z	64 \| moderate	16.46 \| fine	20.317 \| good	24.553 \| good	0.713 \| good	4.71 \| good	0.658 \| good
2026-03-08T04:00:00.000Z	66 \| moderate	16.82 \| fine	41.624 \| good	25.877 \| good	0.603 \| good	2.647 \| good	0.634 \| good
2026-03-08T05:00:00.000Z	49 \| good	9.01 \| good	37.539 \| good	23.749 \| good	0.817 \| good	4.094 \| good	0.6 \| good
2026-03-08T06:00:00.000Z	54 \| moderate	11.255 \| good	23.04 \| good	24.774 \| good	0.701 \| good	3.209 \| good	0.528 \| good
2026-03-08T07:00:00.000Z	58 \| moderate	13.312 \| fine	27.8 \| good	24.785 \| good	0.68 \| good	4.479 \| good	0.021 \| good
2026-03-08T08:00:00.000Z	67 \| moderate	17.843 \| fine	28.52 \| good	24.777 \| good	0.696 \| good	7.062 \| good	0.022 \| good
2026-03-08T09:00:00.000Z	58 \| moderate	13.238 \| fine	25.56 \| good	24.887 \| good	0.781 \| good	6.536 \| good	0.022 \| good
2026-03-08T10:00:00.000Z	58 \| moderate	12.965 \| fine	23.608 \| good	28.178 \| good	0.919 \| good	6.382 \| good	0.016 \| good
2026-03-08T11:00:00.000Z	66 \| moderate	17.201 \| fine	38.151 \| good	24.378 \| good	0.758 \| good	7.571 \| good	0.012 \| good
2026-03-08T12:00:00.000Z	64 \| moderate	15.714 \| fine	37.376 \| good	21.577 \| good	0.672 \| good	7.088 \| good	0.009 \| good
2026-03-08T13:00:00.000Z	60 \| moderate	14.318 \| fine	22.031 \| good	21.362 \| good	0.738 \| good	13.638 \| good	0.008 \| good
2026-03-08T14:00:00.000Z	49 \| good	9.43 \| good	32.527 \| good	23.824 \| good	0.903 \| good	8.417 \| good	0.008 \| good
2026-03-08T15:00:00.000Z	60 \| moderate	13.857 \| fine	40.68 \| good	22.536 \| good	0.707 \| good	10.44 \| good	0.009 \| good
2026-03-08T16:00:00.000Z	62 \| moderate	15.468 \| fine	22.944 \| good	25.857 \| good	0.808 \| good	16.213 \| good	0.01 \| good
2026-03-08T17:00:00.000Z	66 \| moderate	17.025 \| fine	24.334 \| good	24.537 \| good	0.822 \| good	11.959 \| good	0.014 \| good
2026-03-08T18:00:00.000Z	49 \| good	9.228 \| good	27.231 \| good	25.269 \| good	0.84 \| good	14.117 \| good	0.018 \| good
2026-03-08T19:00:00.000Z	62 \| moderate	14.865 \| fine	27.56 \| good	21.028 \| good	0.848 \| good	10.979 \| good	0.029 \| good
2026-03-08T20:00:00.000Z	75 \| moderate	21.733 \| fine	25.262 \| good	23.47 \| good	0.827 \| good	8.458 \| good	0.025 \| good
2026-03-08T21:00:00.000Z	64 \| moderate	16.41 \| fine	30.84 \| good	22.897 \| good	0.819 \| good	14.541 \| good	0.04 \| good
2026-03-08T22:00:00.000Z	75 \| moderate	22.002 \| fine	31.932 \| good	22.098 \| good	0.914 \| good	10.12 \| good	0.049 \| good
2026-03-08T23:00:00.000Z	77 \| moderate	23.229 \| fine	37.549 \| good	19.341 \| good	0.775 \| good	15.243 \| good	0.037 \| good
2026-03-09T00:00:00.000Z	75 \| moderate	21.725 \| fine	62.816 \| fine	19.117 \| good	0.845 \| good	13.319 \| good	0.735 \| good
2026-03-09T01:00:00.000Z	84 \| moderate	27.025 \| fine	66.66 \| fine	19.899 \| good	0.73 \| good	9.136 \| good	0.646 \| good
2026-03-09T02:00:00.000Z	90 \| moderate	30.192 \| fine	62.33 \| fine	17.666 \| good	0.688 \| good	9.392 \| good	0.67 \| good
2026-03-09T03:00:00.000Z	96 \| moderate	32.759 \| fine	51.144 \| good	20.195 \| good	0.688 \| good	8.106 \| good	0.538 \| good
2026-03-09T04:00:00.000Z	97 \| moderate	33.719 \| fine	38.879 \| good	18.398 \| good	0.684 \| good	6.908 \| good	0.495 \| good
2026-03-09T05:00:00.000Z	77 \| moderate	23.423 \| fine	73.354 \| fine	19.777 \| good	0.804 \| good	5.275 \| good	0.462 \| good
2026-03-09T06:00:00.000Z	88 \| moderate	28.52 \| fine	73.132 \| fine	18.818 \| good	0.781 \| good	4.368 \| good	0.457 \| good
2026-03-09T07:00:00.000Z	77 \| moderate	23.279 \| fine	96.914 \| fine	20.765 \| good	0.824 \| good	5.726 \| good	0.024 \| good
2026-03-09T08:00:00.000Z	107 \| sensitive	38.487 \| moderate	46.768 \| good	21.171 \| good	0.48 \| good	9.269 \| good	0.025 \| good
2026-03-09T09:00:00.000Z	97 \| moderate	34.371 \| fine	45.461 \| good	23.874 \| good	0.553 \| good	11.113 \| good	0.02 \| good
2026-03-09T10:00:00.000Z	110 \| sensitive	39.28 \| moderate	50.908 \| good	22.1 \| good	0.621 \| good	11.48 \| good	0.017 \| good
2026-03-09T11:00:00.000Z	88 \| moderate	29.42 \| fine	107.049 \| fine	21.377 \| good	0.752 \| good	14.511 \| good	0.017 \| good
2026-03-09T11:00:00.000Z	88 \| moderate	29.42 \| fine	107.049 \| fine	21.377 \| good	0.752 \| good	14.511 \| good	0.017 \| good
2026-03-09T12:00:00.000Z	142 \| sensitive	52.054 \| moderate	56.099 \| fine	11.93 \| good	0.909 \| good	22.377 \| good	0.306 \| good
2026-03-09T13:00:00.000Z	129 \| sensitive	47.326 \| moderate	51.699 \| good	14.908 \| good	0.763 \| good	20.106 \| good	0.283 \| good
2026-03-09T14:00:00.000Z	115 \| sensitive	40.804 \| moderate	46.854 \| good	19.856 \| good	0.627 \| good	17.449 \| good	0.253 \| good
2026-03-09T15:00:00.000Z	102 \| sensitive	36.072 \| moderate	45.247 \| good	22.989 \| good	0.489 \| good	15.09 \| good	0.225 \| good
2026-03-09T16:00:00.000Z	90 \| moderate	30.002 \| fine	39.383 \| good	27.341 \| good	0.456 \| good	13.493 \| good	0.204 \| good
2026-03-09T17:00:00.000Z	82 \| moderate	26.269 \| fine	34.308 \| good	22.196 \| good	0.573 \| good	15.208 \| good	0.214 \| good
2026-03-09T18:00:00.000Z	84 \| moderate	27.15 \| fine	35.382 \| good	14.879 \| good	0.818 \| good	21.455 \| good	0.249 \| good
2026-03-09T19:00:00.000Z	90 \| moderate	29.958 \| fine	37.118 \| good	8.77 \| good	0.905 \| good	26.922 \| good	0.292 \| good
2026-03-09T20:00:00.000Z	86 \| moderate	27.785 \| fine	31.376 \| good	5.307 \| good	0.963 \| good	31.563 \| good	0.292 \| good
2026-03-09T21:00:00.000Z	79 \| moderate	23.684 \| fine	27.119 \| good	6.899 \| good	0.738 \| good	25.549 \| good	0.248 \| good
2026-03-09T22:00:00.000Z	81 \| moderate	24.686 \| fine	28.039 \| good	9.7 \| good	0.711 \| good	22.028 \| good	0.226 \| good
2026-03-09T23:00:00.000Z	81 \| moderate	24.779 \| fine	29.605 \| good	11.312 \| good	0.638 \| good	20.958 \| good	0.217 \| good
2026-03-10T00:00:00.000Z	79 \| moderate	24.487 \| fine	28.998 \| good	12.262 \| good	0.569 \| good	18.706 \| good	0.201 \| good
2026-03-10T01:00:00.000Z	79 \| moderate	23.508 \| fine	27.889 \| good	17.661 \| good	0.472 \| good	13.358 \| good	0.178 \| good
2026-03-10T02:00:00.000Z	75 \| moderate	22.456 \| fine	27.146 \| good	20.313 \| good	0.308 \| good	10.444 \| good	0.159 \| good
2026-03-10T03:00:00.000Z	73 \| moderate	21.237 \| fine	27.497 \| good	22.759 \| good	0.272 \| good	8.359 \| good	0.148 \| good
2026-03-10T04:00:00.000Z	67 \| moderate	18.247 \| fine	21.826 \| good	24.918 \| good	0.267 \| good	5.838 \| good	0.143 \| good
2026-03-10T05:00:00.000Z	66 \| moderate	17.069 \| fine	20.535 \| good	25.834 \| good	0.259 \| good	4.844 \| good	0.142 \| good
2026-03-10T06:00:00.000Z	64 \| moderate	16.429 \| fine	20.079 \| good	23.935 \| good	0.307 \| good	4.926 \| good	0.142 \| good
2026-03-10T07:00:00.000Z	64 \| moderate	16.309 \| fine	20.768 \| good	21.523 \| good	0.357 \| good	7.011 \| good	0.149 \| good
2026-03-10T08:00:00.000Z	64 \| moderate	16.323 \| fine	20.563 \| good	20.795 \| good	0.463 \| good	9.751 \| good	0.154 \| good
2026-03-10T09:00:00.000Z	64 \| moderate	15.827 \| fine	18.962 \| good	20.776 \| good	0.511 \| good	10.055 \| good	0.156 \| good
2026-03-10T10:00:00.000Z	62 \| moderate	15.467 \| fine	18.5 \| good	21.99 \| good	0.419 \| good	9.437 \| good	0.155 \| good
2026-03-10T11:00:00.000Z	64 \| moderate	15.623 \| fine	17.531 \| good	28.223 \| good	0.33 \| good	6.426 \| good	0.15 \| good
2026-03-10T12:00:00.000Z	58 \| moderate	12.732 \| fine	15.128 \| good	30.341 \| good	0.281 \| good	5.404 \| good	0.146 \| good
2026-03-10T13:00:00.000Z	54 \| moderate	10.943 \| good	13.004 \| good	30.586 \| good	0.261 \| good	4.834 \| good	0.143 \| good
2026-03-10T14:00:00.000Z	54 \| moderate	11.012 \| good	12.129 \| good	30.544 \| good	0.263 \| good	5.024 \| good	0.142 \| good
2026-03-10T15:00:00.000Z	52 \| moderate	10.039 \| good	11.957 \| good	30.468 \| good	0.254 \| good	5.387 \| good	0.142 \| good
2026-03-10T16:00:00.000Z	49 \| good	8.547 \| good	11.011 \| good	34.881 \| good	0.251 \| good	4.916 \| good	0.144 \| good
2026-03-10T17:00:00.000Z	38 \| good	7.001 \| good	9.918 \| good	35.45 \| good	0.28 \| good	6.213 \| good	0.145 \| good
2026-03-10T18:00:00.000Z	38 \| good	7.448 \| good	9.953 \| good	30.596 \| good	0.431 \| good	9.215 \| good	0.155 \| good
2026-03-10T19:00:00.000Z	38 \| good	6.959 \| good	9.791 \| good	29.789 \| good	0.593 \| good	12.065 \| good	0.16 \| good
2026-03-10T20:00:00.000Z	44 \| good	8.285 \| good	10.822 \| good	27.757 \| good	0.663 \| good	13.246 \| good	0.16 \| good
2026-03-10T21:00:00.000Z	52 \| moderate	9.697 \| good	11.61 \| good	27.083 \| good	0.677 \| good	11.874 \| good	0.159 \| good
2026-03-10T22:00:00.000Z	52 \| moderate	9.948 \| good	12.427 \| good	27.427 \| good	0.625 \| good	10.268 \| good	0.154 \| good
2026-03-10T23:00:00.000Z	44 \| good	8.458 \| good	12.492 \| good	29.741 \| good	0.54 \| good	8.087 \| good	0.149 \| good
2026-03-11T00:00:00.000Z	38 \| good	6.524 \| good	9.761 \| good	34.173 \| good	0.447 \| good	5.712 \| good	0.141 \| good
2026-03-11T01:00:00.000Z	32 \| good	5.086 \| good	8.652 \| good	35.245 \| good	0.398 \| good	4.422 \| good	0.134 \| good
2026-03-11T02:00:00.000Z	35 \| good	4.329 \| good	8.061 \| good	37.651 \| good	0.342 \| good	3.59 \| good	0.131 \| good
2026-03-11T03:00:00.000Z	34 \| good	4.228 \| good	7.711 \| good	36.761 \| good	0.318 \| good	3.153 \| good	0.13 \| good
2026-03-11T04:00:00.000Z	35 \| good	3.482 \| good	6.78 \| good	38.372 \| good	0.227 \| good	2.858 \| good	0.128 \| good
2026-03-11T05:00:00.000Z	36 \| good	3.384 \| good	5.562 \| good	38.864 \| good	0.179 \| good	2.321 \| good	0.127 \| good
2026-03-11T06:00:00.000Z	36 \| good	3.211 \| good	5.067 \| good	39.018 \| good	0.221 \| good	2.405 \| good	0.128 \| good
2026-03-11T07:00:00.000Z	35 \| good	2.82 \| good	3.993 \| good	37.688 \| good	0.251 \| good	3.226 \| good	0.132 \| good
2026-03-11T08:00:00.000Z	33 \| good	2.745 \| good	3.847 \| good	35.763 \| good	0.261 \| good	4.751 \| good	0.134 \| good
2026-03-11T09:00:00.000Z	31 \| good	2.9 \| good	3.764 \| good	34.377 \| good	0.328 \| good	5.508 \| good	0.135 \| good
2026-03-11T10:00:00.000Z	31 \| good	2.825 \| good	3.978 \| good	33.152 \| good	0.289 \| good	4.755 \| good	0.133 \| good
2026-03-11T11:00:00.000Z	32 \| good	2.922 \| good	4.495 \| good	34.824 \| good	0.25 \| good	3.474 \| good	0.129 \| good

Real-time air quality index in Chorleywood, Hertfordshire today

Common air pollutants in Chorleywood, Hertfordshire

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Chorleywood, Hertfordshire air quality forecast and history

Empower business decisions with accurate air quality data

Chorleywood, Hertfordshire air quality map: Real-time AQI near you

Air quality in nearby cities

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How accurate is Hertfordshire, UK air quality data?

Air quality levels in UK

Frequently asked questions

How frequently is the air quality data for Chorleywood, Hertfordshire updated?

When did Chorleywood, Hertfordshire experience the worst air quality in the last 24 hours?

When did Chorleywood, Hertfordshire have its best air quality in the last 24 hours?

What is the real-time air quality index for Chorleywood, Hertfordshire?

Which pollutant is found most often in Chorleywood, Hertfordshire?

What can I do if the air quality in Chorleywood, Hertfordshire is poor?

What are the current PM2.5 levels in Chorleywood, Hertfordshire?

What are the current PM10 levels at Chorleywood, Hertfordshire?

What are the current carbon monoxide (CO) levels at Chorleywood, Hertfordshire?

What are the current sulfur dioxide (SO2) levels at Chorleywood, Hertfordshire?

What are the current ozone (O3) levels at Chorleywood, Hertfordshire?

What are the current nitrogen dioxide (NO2) levels at Chorleywood, Hertfordshire?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What are the current PM_2.5 levels in Chorleywood, Hertfordshire?

What are the current PM₁₀ levels at Chorleywood, Hertfordshire?

What are the current sulfur dioxide (SO₂) levels at Chorleywood, Hertfordshire?

What are the current ozone (O₃) levels at Chorleywood, Hertfordshire?

What are the current nitrogen dioxide (NO₂) levels at Chorleywood, Hertfordshire?