What are the current PM10 levels at Chorleywood, Hertfordshire?

The current PM10 levels in Chorleywood, Hertfordshire are 24.369 μg/m3.

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

The current sulfur dioxide (SO2) levels in Chorleywood, Hertfordshire are 1.01 ppb.

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

The current ozone (O3) levels at Chorleywood, Hertfordshire is 34.921 ppm.

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

The current nitrogen dioxide (NO2) levels at Chorleywood, Hertfordshire is 11.038 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 8.447 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)

Good

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)

8.45 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

24.37 μg/m³

155

255

425

605+

Ozone (O₃)

34.92 ppb

201

201+

Sulfur Dioxide (SO₂)

1.01 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

11.04 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.11 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

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
2026-07-08T15:00:00.000Z	54 \| moderate	10.677 \| good	18.208 \| good	37.408 \| good	2.722 \| good	11.822 \| good	0.005 \| good
2026-07-08T16:00:00.000Z	52 \| moderate	10.38 \| good	18.51 \| good	39.018 \| good	1.02 \| good	11.601 \| good	0.005 \| good
2026-07-08T17:00:00.000Z	52 \| moderate	9.749 \| good	17.615 \| good	41.66 \| good	0.805 \| good	11.516 \| good	0.006 \| good
2026-07-08T18:00:00.000Z	56 \| moderate	11.691 \| good	15.115 \| good	46.648 \| good	0.629 \| good	6.978 \| good	0.007 \| good
2026-07-08T19:00:00.000Z	47 \| good	8.182 \| good	14.957 \| good	50.729 \| good	0.632 \| good	6.922 \| good	0.006 \| good
2026-07-08T20:00:00.000Z	54 \| moderate	10.7 \| good	23.4 \| good	53.89 \| good	0.56 \| good	4.27 \| good	0.006 \| good
2026-07-08T21:00:00.000Z	54 \| moderate	10.502 \| good	37.801 \| good	48.211 \| good	0.656 \| good	10.566 \| good	0.006 \| good
2026-07-08T22:00:00.000Z	54 \| moderate	10.55 \| good	32.096 \| good	52.676 \| good	0.71 \| good	15.156 \| good	0.005 \| good
2026-07-08T23:00:00.000Z	52 \| moderate	9.804 \| good	31.503 \| good	51.269 \| good	0.826 \| good	7.468 \| good	0.005 \| good
2026-07-09T00:00:00.000Z	54 \| moderate	11.086 \| good	28.315 \| good	53.714 \| good	0.808 \| good	9.053 \| good	0.118 \| good
2026-07-09T01:00:00.000Z	56 \| moderate	11.658 \| good	25.799 \| good	47.371 \| good	0.908 \| good	12.431 \| good	0.11 \| good
2026-07-09T02:00:00.000Z	52 \| moderate	9.999 \| good	27.656 \| good	45.985 \| good	0.982 \| good	12.454 \| good	0.096 \| good
2026-07-09T03:00:00.000Z	62 \| moderate	14.963 \| fine	25.237 \| good	45.871 \| good	0.942 \| good	12.883 \| good	0.101 \| good
2026-07-09T04:00:00.000Z	58 \| moderate	12.7 \| fine	27.14 \| good	45.888 \| good	0.814 \| good	15.223 \| good	0.104 \| good
2026-07-09T05:00:00.000Z	60 \| moderate	14.1 \| fine	25.714 \| good	40.071 \| good	0.717 \| good	18.561 \| good	0.004 \| good
2026-07-09T06:00:00.000Z	58 \| moderate	13.399 \| fine	24.704 \| good	37.131 \| good	0.858 \| good	18.32 \| good	0.004 \| good
2026-07-09T07:00:00.000Z	58 \| moderate	12.99 \| fine	30.75 \| good	36.673 \| good	0.862 \| good	15.854 \| good	0.004 \| good
2026-07-09T08:00:00.000Z	56 \| moderate	12.175 \| fine	33.895 \| good	38.841 \| good	0.906 \| good	17.215 \| good	0.005 \| good
2026-07-09T09:00:00.000Z	56 \| moderate	12.273 \| fine	39.562 \| good	40.578 \| good	0.929 \| good	14.18 \| good	0.005 \| good
2026-07-09T10:00:00.000Z	60 \| moderate	14.426 \| fine	40.419 \| good	40.52 \| good	0.83 \| good	15.89 \| good	0.153 \| good
2026-07-09T11:00:00.000Z	60 \| moderate	14.358 \| fine	29.677 \| good	38.024 \| good	0.828 \| good	11.729 \| good	0.004 \| good
2026-07-09T12:00:00.000Z	58 \| moderate	12.81 \| fine	33.149 \| good	43.329 \| good	0.753 \| good	12.262 \| good	0.005 \| good
2026-07-09T13:00:00.000Z	54 \| moderate	10.622 \| good	25.019 \| good	37.212 \| good	0.753 \| good	9.317 \| good	0.005 \| good
2026-07-09T14:00:00.000Z	62 \| moderate	14.727 \| fine	25.161 \| good	43.53 \| good	0.828 \| good	11.864 \| good	0.005 \| good
2026-07-09T15:00:00.000Z	60 \| moderate	14.345 \| fine	32.861 \| good	51.744 \| good	0.82 \| good	11.611 \| good	0.106 \| good
2026-07-09T16:00:00.000Z	44 \| good	8.442 \| good	29.539 \| good	47.038 \| good	0.675 \| good	9.411 \| good	0.006 \| good
2026-07-09T17:00:00.000Z	74 \| moderate	14.751 \| fine	41.414 \| good	61.781 \| fine	0.753 \| good	12.647 \| good	0.142 \| good
2026-07-09T18:00:00.000Z	112 \| sensitive	12.872 \| fine	29.45 \| good	73.694 \| moderate	0.643 \| good	9.446 \| good	0.128 \| good
2026-07-09T19:00:00.000Z	112 \| sensitive	15.291 \| fine	28.168 \| good	73.715 \| moderate	0.534 \| good	8.95 \| good	0.182 \| good
2026-07-09T20:00:00.000Z	105 \| sensitive	14.923 \| fine	41.575 \| good	71.56 \| moderate	0.643 \| good	13.061 \| good	0.153 \| good
2026-07-09T21:00:00.000Z	58 \| moderate	13.43 \| fine	23.808 \| good	43.899 \| good	0.646 \| good	13.888 \| good	0.005 \| good
2026-07-09T22:00:00.000Z	67 \| moderate	14.84 \| fine	21.882 \| good	59.852 \| fine	0.675 \| good	10.202 \| good	0.005 \| good
2026-07-09T23:00:00.000Z	58 \| moderate	12.448 \| fine	24.944 \| good	56.816 \| fine	0.789 \| good	8.526 \| good	0.004 \| good
2026-07-10T00:00:00.000Z	56 \| moderate	11.676 \| good	19.651 \| good	54.605 \| good	0.646 \| good	6.39 \| good	0.104 \| good
2026-07-10T01:00:00.000Z	44 \| good	7.56 \| good	16.048 \| good	34.772 \| good	0.825 \| good	6.768 \| good	0.104 \| good
2026-07-10T02:00:00.000Z	58 \| moderate	13.312 \| fine	41.575 \| good	41.724 \| good	0.612 \| good	6.663 \| good	0.103 \| good
2026-07-10T03:00:00.000Z	56 \| moderate	12.109 \| fine	31.47 \| good	35.74 \| good	0.999 \| good	11.987 \| good	0.106 \| good
2026-07-10T04:00:00.000Z	56 \| moderate	12.088 \| good	28.932 \| good	30.612 \| good	0.695 \| good	11.089 \| good	0.118 \| good
2026-07-10T05:00:00.000Z	38 \| good	7.38 \| good	22.6 \| good	29.697 \| good	0.44 \| good	7.713 \| good	0.132 \| good
2026-07-10T06:00:00.000Z	54 \| moderate	11.135 \| good	20.11 \| good	33.577 \| good	0.666 \| good	7.786 \| good	0.137 \| good
2026-07-10T07:00:00.000Z	52 \| moderate	10.294 \| good	35.399 \| good	26.993 \| good	0.724 \| good	10.893 \| good	0.142 \| good
2026-07-10T08:00:00.000Z	54 \| moderate	11.433 \| good	28.635 \| good	22.631 \| good	0.749 \| good	13.113 \| good	0.125 \| good
2026-07-10T09:00:00.000Z	49 \| good	9.267 \| good	30.525 \| good	23.401 \| good	0.887 \| good	10.611 \| good	0.123 \| good
2026-07-10T10:00:00.000Z	38 \| good	7.38 \| good	20.392 \| good	34.161 \| good	0.605 \| good	7.158 \| good	0.13 \| good
2026-07-10T11:00:00.000Z	49 \| good	8.76 \| good	19.404 \| good	33.157 \| good	1.015 \| good	8.53 \| good	0.116 \| good
2026-07-10T12:00:00.000Z	49 \| good	9.347 \| good	25.753 \| good	33.632 \| good	0.913 \| good	12.998 \| good	0.111 \| good
2026-07-10T13:00:00.000Z	44 \| good	8.447 \| good	24.369 \| good	34.921 \| good	1.01 \| good	11.038 \| good	0.113 \| good
2026-07-10T14:00:00.000Z	44 \| good	8.447 \| good	24.369 \| good	34.921 \| good	1.01 \| good	11.038 \| good	0.113 \| good
2026-07-10T15:00:00.000Z	50 \| good	5.854 \| good	9.43 \| good	53.877 \| good	0.203 \| good	1.784 \| good	0.115 \| good
2026-07-10T16:00:00.000Z	48 \| good	5.768 \| good	9.212 \| good	52.209 \| good	0.185 \| good	2.004 \| good	0.113 \| good
2026-07-10T17:00:00.000Z	45 \| good	5.579 \| good	8.937 \| good	48.941 \| good	0.176 \| good	2.333 \| good	0.113 \| good
2026-07-10T18:00:00.000Z	41 \| good	5.463 \| good	8.694 \| good	44.458 \| good	0.169 \| good	2.712 \| good	0.112 \| good
2026-07-10T19:00:00.000Z	38 \| good	5.367 \| good	8.265 \| good	40.515 \| good	0.163 \| good	2.91 \| good	0.11 \| good
2026-07-10T20:00:00.000Z	33 \| good	5.339 \| good	7.695 \| good	35.682 \| good	0.18 \| good	3.498 \| good	0.11 \| good
2026-07-10T21:00:00.000Z	31 \| good	5.485 \| good	8.038 \| good	33.048 \| good	0.215 \| good	4.145 \| good	0.11 \| good
2026-07-10T22:00:00.000Z	29 \| good	5.434 \| good	9.118 \| good	31.455 \| good	0.248 \| good	4.532 \| good	0.108 \| good
2026-07-10T23:00:00.000Z	28 \| good	5.487 \| good	8.724 \| good	30.413 \| good	0.246 \| good	4.565 \| good	0.108 \| good
2026-07-11T00:00:00.000Z	27 \| good	5.459 \| good	9.315 \| good	28.701 \| good	0.22 \| good	4.414 \| good	0.108 \| good
2026-07-11T01:00:00.000Z	27 \| good	5.34 \| good	9.232 \| good	28.041 \| good	0.186 \| good	3.932 \| good	0.107 \| good
2026-07-11T02:00:00.000Z	27 \| good	5.285 \| good	9.068 \| good	28.448 \| good	0.152 \| good	3.315 \| good	0.105 \| good
2026-07-11T03:00:00.000Z	33 \| good	5.618 \| good	9.291 \| good	29.136 \| good	0.128 \| good	2.904 \| good	0.104 \| good
2026-07-11T04:00:00.000Z	33 \| good	6.124 \| good	9.719 \| good	29.002 \| good	0.123 \| good	2.595 \| good	0.102 \| good
2026-07-11T05:00:00.000Z	33 \| good	6.226 \| good	10.296 \| good	27.282 \| good	0.124 \| good	2.476 \| good	0.102 \| good
2026-07-11T06:00:00.000Z	33 \| good	6.161 \| good	10.272 \| good	27.098 \| good	0.134 \| good	2.619 \| good	0.102 \| good
2026-07-11T07:00:00.000Z	33 \| good	5.666 \| good	9.816 \| good	27.451 \| good	0.149 \| good	2.227 \| good	0.108 \| good
2026-07-11T08:00:00.000Z	28 \| good	5.234 \| good	10.024 \| good	30.153 \| good	0.156 \| good	1.989 \| good	0.109 \| good
2026-07-11T09:00:00.000Z	32 \| good	5.036 \| good	9.61 \| good	35.048 \| good	0.157 \| good	1.747 \| good	0.107 \| good
2026-07-11T10:00:00.000Z	37 \| good	5.233 \| good	8.224 \| good	39.735 \| good	0.143 \| good	1.488 \| good	0.106 \| good
2026-07-11T11:00:00.000Z	41 \| good	5.234 \| good	8.347 \| good	43.801 \| good	0.124 \| good	1.237 \| good	0.105 \| good
2026-07-11T12:00:00.000Z	43 \| good	5.193 \| good	8.067 \| good	46.102 \| good	0.107 \| good	1.164 \| good	0.104 \| good
2026-07-11T13:00:00.000Z	44 \| good	5.125 \| good	7.604 \| good	47.621 \| good	0.097 \| good	1.118 \| good	0.102 \| good
2026-07-11T14:00:00.000Z	44 \| good	4.862 \| good	7.166 \| good	48.228 \| good	0.091 \| good	1.09 \| good	0.102 \| good
2026-07-11T15:00:00.000Z	44 \| good	4.76 \| good	7.183 \| good	48.336 \| good	0.087 \| good	1.079 \| good	0.102 \| good
2026-07-11T16:00:00.000Z	44 \| good	4.86 \| good	7.867 \| good	47.911 \| good	0.086 \| good	1.172 \| good	0.102 \| good
2026-07-11T17:00:00.000Z	44 \| good	4.862 \| good	8.102 \| good	47.129 \| good	0.087 \| good	1.327 \| good	0.102 \| good
2026-07-11T18:00:00.000Z	43 \| good	4.884 \| good	7.535 \| good	45.892 \| good	0.099 \| good	1.392 \| good	0.099 \| good
2026-07-11T19:00:00.000Z	40 \| good	4.657 \| good	6.777 \| good	42.944 \| good	0.106 \| good	1.653 \| good	0.098 \| good
2026-07-11T20:00:00.000Z	37 \| good	4.731 \| good	6.504 \| good	40.498 \| good	0.146 \| good	2.259 \| good	0.096 \| good
2026-07-11T21:00:00.000Z	34 \| good	4.848 \| good	6.817 \| good	37.297 \| good	0.165 \| good	2.904 \| good	0.095 \| good
2026-07-11T22:00:00.000Z	32 \| good	4.916 \| good	7.16 \| good	34.656 \| good	0.171 \| good	2.934 \| good	0.094 \| good
2026-07-11T23:00:00.000Z	31 \| good	4.929 \| good	7.289 \| good	33.199 \| good	0.167 \| good	2.803 \| good	0.093 \| good
2026-07-12T00:00:00.000Z	28 \| good	4.861 \| good	7.575 \| good	30.41 \| good	0.151 \| good	2.722 \| good	0.091 \| good
2026-07-12T01:00:00.000Z	27 \| good	4.785 \| good	7.53 \| good	28.562 \| good	0.126 \| good	2.468 \| good	0.089 \| good
2026-07-12T02:00:00.000Z	27 \| good	4.611 \| good	6.861 \| good	28.021 \| good	0.111 \| good	2.206 \| good	0.089 \| good
2026-07-12T03:00:00.000Z	27 \| good	4.714 \| good	7.018 \| good	28.692 \| good	0.1 \| good	2.014 \| good	0.091 \| good
2026-07-12T04:00:00.000Z	27 \| good	5.219 \| good	7.544 \| good	27.835 \| good	0.092 \| good	1.851 \| good	0.092 \| good
2026-07-12T05:00:00.000Z	27 \| good	5.397 \| good	7.682 \| good	28.179 \| good	0.092 \| good	1.694 \| good	0.092 \| good
2026-07-12T06:00:00.000Z	33 \| good	5.666 \| good	7.768 \| good	27.737 \| good	0.105 \| good	1.529 \| good	0.094 \| good
2026-07-12T07:00:00.000Z	33 \| good	5.704 \| good	7.75 \| good	27.149 \| good	0.119 \| good	1.6 \| good	0.099 \| good
2026-07-12T08:00:00.000Z	33 \| good	5.622 \| good	7.99 \| good	29.07 \| good	0.127 \| good	1.496 \| good	0.1 \| good
2026-07-12T09:00:00.000Z	33 \| good	5.569 \| good	8.723 \| good	33.097 \| good	0.148 \| good	1.397 \| good	0.101 \| good
2026-07-12T10:00:00.000Z	35 \| good	5.718 \| good	8.588 \| good	38.111 \| good	0.171 \| good	1.245 \| good	0.103 \| good
2026-07-12T11:00:00.000Z	41 \| good	5.877 \| good	8.946 \| good	43.712 \| good	0.18 \| good	1.138 \| good	0.102 \| good
2026-07-12T12:00:00.000Z	47 \| good	5.997 \| good	9.279 \| good	51.242 \| good	0.192 \| good	1.131 \| good	0.102 \| good
2026-07-12T13:00:00.000Z	50 \| good	5.521 \| good	9.064 \| good	53.795 \| good	0.229 \| good	1.074 \| good	0.102 \| good
2026-07-12T14:00:00.000Z	51 \| moderate	5.214 \| good	9.025 \| good	55.157 \| fine	0.22 \| good	1.056 \| good	0.102 \| good

Chorleywood

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

0.11ppm

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 07:00:00 on 2026-07-09.

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

The best air quality in Chorleywood, Hertfordshire was recorded at 10:00:00 on 2026-07-10.

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

The real-time air quality index in Chorleywood, Hertfordshire is 44, currently categorized as Good.

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 8.447 μg/m³.

What are the current PM₁₀ levels at Chorleywood, Hertfordshire?

The current PM₁₀ levels in Chorleywood, Hertfordshire are 24.369 μg/m³.

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

The current carbon monoxide (CO) level in Chorleywood, Hertfordshire is 0.113 ppm.

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

The current sulfur dioxide (SO₂) levels in Chorleywood, Hertfordshire are 1.01 ppb.

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

The current ozone (O₃) levels at Chorleywood, Hertfordshire is 34.921 ppm.

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

The current nitrogen dioxide (NO₂) levels at Chorleywood, Hertfordshire is 11.038 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-08T15:00:00.000Z	54 \| moderate	10.677 \| good	18.208 \| good	37.408 \| good	2.722 \| good	11.822 \| good	0.005 \| good
2026-07-08T16:00:00.000Z	52 \| moderate	10.38 \| good	18.51 \| good	39.018 \| good	1.02 \| good	11.601 \| good	0.005 \| good
2026-07-08T17:00:00.000Z	52 \| moderate	9.749 \| good	17.615 \| good	41.66 \| good	0.805 \| good	11.516 \| good	0.006 \| good
2026-07-08T18:00:00.000Z	56 \| moderate	11.691 \| good	15.115 \| good	46.648 \| good	0.629 \| good	6.978 \| good	0.007 \| good
2026-07-08T19:00:00.000Z	47 \| good	8.182 \| good	14.957 \| good	50.729 \| good	0.632 \| good	6.922 \| good	0.006 \| good
2026-07-08T20:00:00.000Z	54 \| moderate	10.7 \| good	23.4 \| good	53.89 \| good	0.56 \| good	4.27 \| good	0.006 \| good
2026-07-08T21:00:00.000Z	54 \| moderate	10.502 \| good	37.801 \| good	48.211 \| good	0.656 \| good	10.566 \| good	0.006 \| good
2026-07-08T22:00:00.000Z	54 \| moderate	10.55 \| good	32.096 \| good	52.676 \| good	0.71 \| good	15.156 \| good	0.005 \| good
2026-07-08T23:00:00.000Z	52 \| moderate	9.804 \| good	31.503 \| good	51.269 \| good	0.826 \| good	7.468 \| good	0.005 \| good
2026-07-09T00:00:00.000Z	54 \| moderate	11.086 \| good	28.315 \| good	53.714 \| good	0.808 \| good	9.053 \| good	0.118 \| good
2026-07-09T01:00:00.000Z	56 \| moderate	11.658 \| good	25.799 \| good	47.371 \| good	0.908 \| good	12.431 \| good	0.11 \| good
2026-07-09T02:00:00.000Z	52 \| moderate	9.999 \| good	27.656 \| good	45.985 \| good	0.982 \| good	12.454 \| good	0.096 \| good
2026-07-09T03:00:00.000Z	62 \| moderate	14.963 \| fine	25.237 \| good	45.871 \| good	0.942 \| good	12.883 \| good	0.101 \| good
2026-07-09T04:00:00.000Z	58 \| moderate	12.7 \| fine	27.14 \| good	45.888 \| good	0.814 \| good	15.223 \| good	0.104 \| good
2026-07-09T05:00:00.000Z	60 \| moderate	14.1 \| fine	25.714 \| good	40.071 \| good	0.717 \| good	18.561 \| good	0.004 \| good
2026-07-09T06:00:00.000Z	58 \| moderate	13.399 \| fine	24.704 \| good	37.131 \| good	0.858 \| good	18.32 \| good	0.004 \| good
2026-07-09T07:00:00.000Z	58 \| moderate	12.99 \| fine	30.75 \| good	36.673 \| good	0.862 \| good	15.854 \| good	0.004 \| good
2026-07-09T08:00:00.000Z	56 \| moderate	12.175 \| fine	33.895 \| good	38.841 \| good	0.906 \| good	17.215 \| good	0.005 \| good
2026-07-09T09:00:00.000Z	56 \| moderate	12.273 \| fine	39.562 \| good	40.578 \| good	0.929 \| good	14.18 \| good	0.005 \| good
2026-07-09T10:00:00.000Z	60 \| moderate	14.426 \| fine	40.419 \| good	40.52 \| good	0.83 \| good	15.89 \| good	0.153 \| good
2026-07-09T11:00:00.000Z	60 \| moderate	14.358 \| fine	29.677 \| good	38.024 \| good	0.828 \| good	11.729 \| good	0.004 \| good
2026-07-09T12:00:00.000Z	58 \| moderate	12.81 \| fine	33.149 \| good	43.329 \| good	0.753 \| good	12.262 \| good	0.005 \| good
2026-07-09T13:00:00.000Z	54 \| moderate	10.622 \| good	25.019 \| good	37.212 \| good	0.753 \| good	9.317 \| good	0.005 \| good
2026-07-09T14:00:00.000Z	62 \| moderate	14.727 \| fine	25.161 \| good	43.53 \| good	0.828 \| good	11.864 \| good	0.005 \| good
2026-07-09T15:00:00.000Z	60 \| moderate	14.345 \| fine	32.861 \| good	51.744 \| good	0.82 \| good	11.611 \| good	0.106 \| good
2026-07-09T16:00:00.000Z	44 \| good	8.442 \| good	29.539 \| good	47.038 \| good	0.675 \| good	9.411 \| good	0.006 \| good
2026-07-09T17:00:00.000Z	74 \| moderate	14.751 \| fine	41.414 \| good	61.781 \| fine	0.753 \| good	12.647 \| good	0.142 \| good
2026-07-09T18:00:00.000Z	112 \| sensitive	12.872 \| fine	29.45 \| good	73.694 \| moderate	0.643 \| good	9.446 \| good	0.128 \| good
2026-07-09T19:00:00.000Z	112 \| sensitive	15.291 \| fine	28.168 \| good	73.715 \| moderate	0.534 \| good	8.95 \| good	0.182 \| good
2026-07-09T20:00:00.000Z	105 \| sensitive	14.923 \| fine	41.575 \| good	71.56 \| moderate	0.643 \| good	13.061 \| good	0.153 \| good
2026-07-09T21:00:00.000Z	58 \| moderate	13.43 \| fine	23.808 \| good	43.899 \| good	0.646 \| good	13.888 \| good	0.005 \| good
2026-07-09T22:00:00.000Z	67 \| moderate	14.84 \| fine	21.882 \| good	59.852 \| fine	0.675 \| good	10.202 \| good	0.005 \| good
2026-07-09T23:00:00.000Z	58 \| moderate	12.448 \| fine	24.944 \| good	56.816 \| fine	0.789 \| good	8.526 \| good	0.004 \| good
2026-07-10T00:00:00.000Z	56 \| moderate	11.676 \| good	19.651 \| good	54.605 \| good	0.646 \| good	6.39 \| good	0.104 \| good
2026-07-10T01:00:00.000Z	44 \| good	7.56 \| good	16.048 \| good	34.772 \| good	0.825 \| good	6.768 \| good	0.104 \| good
2026-07-10T02:00:00.000Z	58 \| moderate	13.312 \| fine	41.575 \| good	41.724 \| good	0.612 \| good	6.663 \| good	0.103 \| good
2026-07-10T03:00:00.000Z	56 \| moderate	12.109 \| fine	31.47 \| good	35.74 \| good	0.999 \| good	11.987 \| good	0.106 \| good
2026-07-10T04:00:00.000Z	56 \| moderate	12.088 \| good	28.932 \| good	30.612 \| good	0.695 \| good	11.089 \| good	0.118 \| good
2026-07-10T05:00:00.000Z	38 \| good	7.38 \| good	22.6 \| good	29.697 \| good	0.44 \| good	7.713 \| good	0.132 \| good
2026-07-10T06:00:00.000Z	54 \| moderate	11.135 \| good	20.11 \| good	33.577 \| good	0.666 \| good	7.786 \| good	0.137 \| good
2026-07-10T07:00:00.000Z	52 \| moderate	10.294 \| good	35.399 \| good	26.993 \| good	0.724 \| good	10.893 \| good	0.142 \| good
2026-07-10T08:00:00.000Z	54 \| moderate	11.433 \| good	28.635 \| good	22.631 \| good	0.749 \| good	13.113 \| good	0.125 \| good
2026-07-10T09:00:00.000Z	49 \| good	9.267 \| good	30.525 \| good	23.401 \| good	0.887 \| good	10.611 \| good	0.123 \| good
2026-07-10T10:00:00.000Z	38 \| good	7.38 \| good	20.392 \| good	34.161 \| good	0.605 \| good	7.158 \| good	0.13 \| good
2026-07-10T11:00:00.000Z	49 \| good	8.76 \| good	19.404 \| good	33.157 \| good	1.015 \| good	8.53 \| good	0.116 \| good
2026-07-10T12:00:00.000Z	49 \| good	9.347 \| good	25.753 \| good	33.632 \| good	0.913 \| good	12.998 \| good	0.111 \| good
2026-07-10T13:00:00.000Z	44 \| good	8.447 \| good	24.369 \| good	34.921 \| good	1.01 \| good	11.038 \| good	0.113 \| good
2026-07-10T14:00:00.000Z	44 \| good	8.447 \| good	24.369 \| good	34.921 \| good	1.01 \| good	11.038 \| good	0.113 \| good
2026-07-10T15:00:00.000Z	50 \| good	5.854 \| good	9.43 \| good	53.877 \| good	0.203 \| good	1.784 \| good	0.115 \| good
2026-07-10T16:00:00.000Z	48 \| good	5.768 \| good	9.212 \| good	52.209 \| good	0.185 \| good	2.004 \| good	0.113 \| good
2026-07-10T17:00:00.000Z	45 \| good	5.579 \| good	8.937 \| good	48.941 \| good	0.176 \| good	2.333 \| good	0.113 \| good
2026-07-10T18:00:00.000Z	41 \| good	5.463 \| good	8.694 \| good	44.458 \| good	0.169 \| good	2.712 \| good	0.112 \| good
2026-07-10T19:00:00.000Z	38 \| good	5.367 \| good	8.265 \| good	40.515 \| good	0.163 \| good	2.91 \| good	0.11 \| good
2026-07-10T20:00:00.000Z	33 \| good	5.339 \| good	7.695 \| good	35.682 \| good	0.18 \| good	3.498 \| good	0.11 \| good
2026-07-10T21:00:00.000Z	31 \| good	5.485 \| good	8.038 \| good	33.048 \| good	0.215 \| good	4.145 \| good	0.11 \| good
2026-07-10T22:00:00.000Z	29 \| good	5.434 \| good	9.118 \| good	31.455 \| good	0.248 \| good	4.532 \| good	0.108 \| good
2026-07-10T23:00:00.000Z	28 \| good	5.487 \| good	8.724 \| good	30.413 \| good	0.246 \| good	4.565 \| good	0.108 \| good
2026-07-11T00:00:00.000Z	27 \| good	5.459 \| good	9.315 \| good	28.701 \| good	0.22 \| good	4.414 \| good	0.108 \| good
2026-07-11T01:00:00.000Z	27 \| good	5.34 \| good	9.232 \| good	28.041 \| good	0.186 \| good	3.932 \| good	0.107 \| good
2026-07-11T02:00:00.000Z	27 \| good	5.285 \| good	9.068 \| good	28.448 \| good	0.152 \| good	3.315 \| good	0.105 \| good
2026-07-11T03:00:00.000Z	33 \| good	5.618 \| good	9.291 \| good	29.136 \| good	0.128 \| good	2.904 \| good	0.104 \| good
2026-07-11T04:00:00.000Z	33 \| good	6.124 \| good	9.719 \| good	29.002 \| good	0.123 \| good	2.595 \| good	0.102 \| good
2026-07-11T05:00:00.000Z	33 \| good	6.226 \| good	10.296 \| good	27.282 \| good	0.124 \| good	2.476 \| good	0.102 \| good
2026-07-11T06:00:00.000Z	33 \| good	6.161 \| good	10.272 \| good	27.098 \| good	0.134 \| good	2.619 \| good	0.102 \| good
2026-07-11T07:00:00.000Z	33 \| good	5.666 \| good	9.816 \| good	27.451 \| good	0.149 \| good	2.227 \| good	0.108 \| good
2026-07-11T08:00:00.000Z	28 \| good	5.234 \| good	10.024 \| good	30.153 \| good	0.156 \| good	1.989 \| good	0.109 \| good
2026-07-11T09:00:00.000Z	32 \| good	5.036 \| good	9.61 \| good	35.048 \| good	0.157 \| good	1.747 \| good	0.107 \| good
2026-07-11T10:00:00.000Z	37 \| good	5.233 \| good	8.224 \| good	39.735 \| good	0.143 \| good	1.488 \| good	0.106 \| good
2026-07-11T11:00:00.000Z	41 \| good	5.234 \| good	8.347 \| good	43.801 \| good	0.124 \| good	1.237 \| good	0.105 \| good
2026-07-11T12:00:00.000Z	43 \| good	5.193 \| good	8.067 \| good	46.102 \| good	0.107 \| good	1.164 \| good	0.104 \| good
2026-07-11T13:00:00.000Z	44 \| good	5.125 \| good	7.604 \| good	47.621 \| good	0.097 \| good	1.118 \| good	0.102 \| good
2026-07-11T14:00:00.000Z	44 \| good	4.862 \| good	7.166 \| good	48.228 \| good	0.091 \| good	1.09 \| good	0.102 \| good
2026-07-11T15:00:00.000Z	44 \| good	4.76 \| good	7.183 \| good	48.336 \| good	0.087 \| good	1.079 \| good	0.102 \| good
2026-07-11T16:00:00.000Z	44 \| good	4.86 \| good	7.867 \| good	47.911 \| good	0.086 \| good	1.172 \| good	0.102 \| good
2026-07-11T17:00:00.000Z	44 \| good	4.862 \| good	8.102 \| good	47.129 \| good	0.087 \| good	1.327 \| good	0.102 \| good
2026-07-11T18:00:00.000Z	43 \| good	4.884 \| good	7.535 \| good	45.892 \| good	0.099 \| good	1.392 \| good	0.099 \| good
2026-07-11T19:00:00.000Z	40 \| good	4.657 \| good	6.777 \| good	42.944 \| good	0.106 \| good	1.653 \| good	0.098 \| good
2026-07-11T20:00:00.000Z	37 \| good	4.731 \| good	6.504 \| good	40.498 \| good	0.146 \| good	2.259 \| good	0.096 \| good
2026-07-11T21:00:00.000Z	34 \| good	4.848 \| good	6.817 \| good	37.297 \| good	0.165 \| good	2.904 \| good	0.095 \| good
2026-07-11T22:00:00.000Z	32 \| good	4.916 \| good	7.16 \| good	34.656 \| good	0.171 \| good	2.934 \| good	0.094 \| good
2026-07-11T23:00:00.000Z	31 \| good	4.929 \| good	7.289 \| good	33.199 \| good	0.167 \| good	2.803 \| good	0.093 \| good
2026-07-12T00:00:00.000Z	28 \| good	4.861 \| good	7.575 \| good	30.41 \| good	0.151 \| good	2.722 \| good	0.091 \| good
2026-07-12T01:00:00.000Z	27 \| good	4.785 \| good	7.53 \| good	28.562 \| good	0.126 \| good	2.468 \| good	0.089 \| good
2026-07-12T02:00:00.000Z	27 \| good	4.611 \| good	6.861 \| good	28.021 \| good	0.111 \| good	2.206 \| good	0.089 \| good
2026-07-12T03:00:00.000Z	27 \| good	4.714 \| good	7.018 \| good	28.692 \| good	0.1 \| good	2.014 \| good	0.091 \| good
2026-07-12T04:00:00.000Z	27 \| good	5.219 \| good	7.544 \| good	27.835 \| good	0.092 \| good	1.851 \| good	0.092 \| good
2026-07-12T05:00:00.000Z	27 \| good	5.397 \| good	7.682 \| good	28.179 \| good	0.092 \| good	1.694 \| good	0.092 \| good
2026-07-12T06:00:00.000Z	33 \| good	5.666 \| good	7.768 \| good	27.737 \| good	0.105 \| good	1.529 \| good	0.094 \| good
2026-07-12T07:00:00.000Z	33 \| good	5.704 \| good	7.75 \| good	27.149 \| good	0.119 \| good	1.6 \| good	0.099 \| good
2026-07-12T08:00:00.000Z	33 \| good	5.622 \| good	7.99 \| good	29.07 \| good	0.127 \| good	1.496 \| good	0.1 \| good
2026-07-12T09:00:00.000Z	33 \| good	5.569 \| good	8.723 \| good	33.097 \| good	0.148 \| good	1.397 \| good	0.101 \| good
2026-07-12T10:00:00.000Z	35 \| good	5.718 \| good	8.588 \| good	38.111 \| good	0.171 \| good	1.245 \| good	0.103 \| good
2026-07-12T11:00:00.000Z	41 \| good	5.877 \| good	8.946 \| good	43.712 \| good	0.18 \| good	1.138 \| good	0.102 \| good
2026-07-12T12:00:00.000Z	47 \| good	5.997 \| good	9.279 \| good	51.242 \| good	0.192 \| good	1.131 \| good	0.102 \| good
2026-07-12T13:00:00.000Z	50 \| good	5.521 \| good	9.064 \| good	53.795 \| good	0.229 \| good	1.074 \| good	0.102 \| good
2026-07-12T14:00:00.000Z	51 \| moderate	5.214 \| good	9.025 \| good	55.157 \| fine	0.22 \| good	1.056 \| good	0.102 \| 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?