What is the sulfur dioxide (SO2) level in Hertford, Hertfordshire at the moment?

Currently, Hertford, Hertfordshire has a sulfur dioxide (SO2) concentration of 0.582 ppb.

What is the ozone (O3) level in Hertford, Hertfordshire at the moment?

The current ozone (O3) level in Hertford, Hertfordshire at the moment is 17.382 ppm.

What is the nitrogen dioxide (NO2) level in Hertford, Hertfordshire at the moment?

Nitrogen dioxide (NO2) level in Hertford, Hertfordshire at the moment is 9.681 ppb.

Live air quality index in Hertford, Hertfordshire today

Q: What is the PM2.5 level in Hertford, Hertfordshire at the moment?

PM2.5 levels in Hertford, Hertfordshire are currently 7.715 μg/m3.

Q: What is the PM10 level in Hertford, Hertfordshire at the moment?

The PM10 concentration in Hertford, Hertfordshire is 17.52 μg/m3 at the moment.

Stay updated with real-time air quality in Hertford, 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

Hertford, Hertfordshire

Last updated: ... (Local time)

Major air pollutants in Hertford, Hertfordshire

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

6.42 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

11.93 μg/m³

155

255

425

605+

Ozone (O₃)

19.60 ppb

201

201+

Sulfur Dioxide (SO₂)

1.48 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.63 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.30 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

Hertford, Hertfordshire

Get Live Pollen Counts

Hertford, Hertfordshire

Scroll To Air Quality Map

Track live Hertford, Hertfordshire air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-11-06T05:00:00.000Z	38 \| good	7.076 \| good	9.709 \| good	21.806 \| good	0.302 \| good	4.51 \| good	0.124 \| good
2025-11-06T06:00:00.000Z	44 \| good	8.22 \| good	24.855 \| good	19.246 \| good	0.549 \| good	7.671 \| good	0.01 \| good
2025-11-06T07:00:00.000Z	33 \| good	5.773 \| good	18.983 \| good	17.06 \| good	0.949 \| good	8.678 \| good	0.603 \| good
2025-11-06T08:00:00.000Z	33 \| good	6.443 \| good	24.832 \| good	15.994 \| good	0.739 \| good	6.448 \| good	0.012 \| good
2025-11-06T09:00:00.000Z	49 \| good	8.502 \| good	16.701 \| good	15.702 \| good	1.043 \| good	17.335 \| good	0.514 \| good
2025-11-06T10:00:00.000Z	33 \| good	5.801 \| good	19.83 \| good	15.387 \| good	0.694 \| good	12.745 \| good	0.009 \| good
2025-11-06T11:00:00.000Z	38 \| good	6.589 \| good	18.4 \| good	16.246 \| good	0.618 \| good	10.761 \| good	0.008 \| good
2025-11-06T12:00:00.000Z	52 \| moderate	10.08 \| good	16.669 \| good	20.178 \| good	0.917 \| good	10.511 \| good	0.006 \| good
2025-11-06T13:00:00.000Z	49 \| good	8.76 \| good	21.88 \| good	18.81 \| good	0.733 \| good	10.242 \| good	0.005 \| good
2025-11-06T14:00:00.000Z	33 \| good	6.021 \| good	20.653 \| good	19.254 \| good	0.926 \| good	10.126 \| good	0.005 \| good
2025-11-06T15:00:00.000Z	44 \| good	8.333 \| good	20.666 \| good	18.405 \| good	0.915 \| good	9.128 \| good	0.006 \| good
2025-11-06T16:00:00.000Z	44 \| good	7.759 \| good	19.235 \| good	17.051 \| good	0.901 \| good	14.203 \| good	0.008 \| good
2025-11-06T17:00:00.000Z	52 \| moderate	9.617 \| good	34.223 \| good	19.038 \| good	0.918 \| good	16.539 \| good	0.015 \| good
2025-11-06T18:00:00.000Z	52 \| moderate	10.42 \| good	21.88 \| good	19.407 \| good	0.953 \| good	14.204 \| good	0.016 \| good
2025-11-06T19:00:00.000Z	38 \| good	6.956 \| good	13.529 \| good	21.727 \| good	1.072 \| good	17.507 \| good	0.017 \| good
2025-11-06T20:00:00.000Z	33 \| good	6.35 \| good	13.971 \| good	16.138 \| good	0.863 \| good	21.511 \| good	0.02 \| good
2025-11-06T21:00:00.000Z	33 \| good	5.991 \| good	24.219 \| good	15.082 \| good	0.844 \| good	11.072 \| good	0.016 \| good
2025-11-06T22:00:00.000Z	44 \| good	7.701 \| good	17.8 \| good	17.776 \| good	0.971 \| good	15.501 \| good	0.019 \| good
2025-11-06T23:00:00.000Z	38 \| good	6.803 \| good	31.397 \| good	13.755 \| good	0.846 \| good	16.158 \| good	0.021 \| good
2025-11-07T00:00:00.000Z	38 \| good	7.096 \| good	29.578 \| good	16.828 \| good	1.39 \| good	12.113 \| good	0.553 \| good
2025-11-07T01:00:00.000Z	38 \| good	6.621 \| good	25.387 \| good	14.058 \| good	1.539 \| good	11.983 \| good	0.485 \| good
2025-11-07T02:00:00.000Z	44 \| good	8.377 \| good	23.641 \| good	9.113 \| good	1.539 \| good	13.178 \| good	0.441 \| good
2025-11-07T03:00:00.000Z	44 \| good	7.993 \| good	22.313 \| good	9.933 \| good	2.182 \| good	13.597 \| good	0.401 \| good
2025-11-07T04:00:00.000Z	49 \| good	8.79 \| good	29.149 \| good	10.429 \| good	2.441 \| good	11.678 \| good	0.34 \| good
2025-11-07T05:00:00.000Z	49 \| good	9.044 \| good	23.372 \| good	12.978 \| good	2.157 \| good	11.136 \| good	0.338 \| good
2025-11-07T06:00:00.000Z	52 \| moderate	10.44 \| good	15.3 \| good	16.704 \| good	2.273 \| good	15.809 \| good	0.008 \| good
2025-11-07T07:00:00.000Z	33 \| good	5.593 \| good	13.111 \| good	11.367 \| good	2.299 \| good	6.066 \| good	0.011 \| good
2025-11-07T08:00:00.000Z	38 \| good	7.233 \| good	21.97 \| good	10.725 \| good	0.838 \| good	4.785 \| good	0.009 \| good
2025-11-07T09:00:00.000Z	54 \| moderate	10.695 \| good	12.466 \| good	13.34 \| good	0.52 \| good	11.44 \| good	0.144 \| good
2025-11-07T10:00:00.000Z	49 \| good	9.495 \| good	10.935 \| good	14.637 \| good	0.543 \| good	11.04 \| good	0.144 \| good
2025-11-07T11:00:00.000Z	44 \| good	8.222 \| good	9.792 \| good	14.884 \| good	0.568 \| good	9.926 \| good	0.147 \| good
2025-11-07T12:00:00.000Z	38 \| good	6.982 \| good	9.533 \| good	17.488 \| good	0.458 \| good	8.862 \| good	0.15 \| good
2025-11-07T13:00:00.000Z	49 \| good	9.176 \| good	21.379 \| good	14.51 \| good	0.525 \| good	13.223 \| good	0.008 \| good
2025-11-07T14:00:00.000Z	56 \| moderate	12.3 \| fine	14.797 \| good	16.893 \| good	0.532 \| good	8.691 \| good	0.011 \| good
2025-11-07T15:00:00.000Z	44 \| good	7.701 \| good	29.696 \| good	16.366 \| good	0.534 \| good	9.763 \| good	0.01 \| good
2025-11-07T16:00:00.000Z	38 \| good	6.934 \| good	20.674 \| good	15.217 \| good	0.649 \| good	9.879 \| good	0.011 \| good
2025-11-07T17:00:00.000Z	27 \| good	3.78 \| good	28.811 \| good	18.033 \| good	0.589 \| good	10.109 \| good	0.013 \| good
2025-11-07T18:00:00.000Z	22 \| good	4.44 \| good	14.968 \| good	20.515 \| good	2.041 \| good	9.773 \| good	0.016 \| good
2025-11-07T19:00:00.000Z	38 \| good	7.22 \| good	26.16 \| good	20.363 \| good	2.188 \| good	10.65 \| good	0.021 \| good
2025-11-07T20:00:00.000Z	49 \| good	8.565 \| good	28.246 \| good	22.953 \| good	1.957 \| good	10 \| good	0.019 \| good
2025-11-07T21:00:00.000Z	44 \| good	8.405 \| good	26.48 \| good	21.641 \| good	1.885 \| good	10.532 \| good	0.018 \| good
2025-11-07T22:00:00.000Z	52 \| moderate	10 \| good	18.8 \| good	18.827 \| good	1.717 \| good	9.383 \| good	0.021 \| good
2025-11-07T23:00:00.000Z	54 \| moderate	10.578 \| good	19.3 \| good	21.083 \| good	0.42 \| good	10.84 \| good	0.029 \| good
2025-11-08T00:00:00.000Z	52 \| moderate	9.6 \| good	17.529 \| good	19.158 \| good	1.697 \| good	4.396 \| good	0.861 \| good
2025-11-08T01:00:00.000Z	33 \| good	6.2 \| good	15.65 \| good	18.168 \| good	1.767 \| good	7.638 \| good	0.441 \| good
2025-11-08T02:00:00.000Z	27 \| good	5.399 \| good	18.46 \| good	16.841 \| good	1.491 \| good	8.384 \| good	0.332 \| good
2025-11-08T03:00:00.000Z	49 \| good	8.572 \| good	11.993 \| good	22.646 \| good	1.758 \| good	4.938 \| good	0.296 \| good
2025-11-08T04:00:00.000Z	33 \| good	6.421 \| good	11.932 \| good	19.598 \| good	1.481 \| good	4.628 \| good	0.296 \| good
2025-11-07T17:00:00.000Z	27 \| good	5.37 \| good	8.739 \| good	19.449 \| good	0.498 \| good	10.556 \| good	0.133 \| good
2025-11-07T18:00:00.000Z	33 \| good	5.866 \| good	9.259 \| good	18.033 \| good	0.596 \| good	12.833 \| good	0.135 \| good
2025-11-07T19:00:00.000Z	33 \| good	6.04 \| good	9.505 \| good	18.007 \| good	0.608 \| good	12.925 \| good	0.135 \| good
2025-11-07T20:00:00.000Z	33 \| good	6.085 \| good	8.837 \| good	19.485 \| good	0.582 \| good	10.773 \| good	0.129 \| good
2025-11-07T21:00:00.000Z	27 \| good	5.326 \| good	7.575 \| good	21.92 \| good	0.583 \| good	8.665 \| good	0.125 \| good
2025-11-07T22:00:00.000Z	27 \| good	5.097 \| good	6.531 \| good	22.505 \| good	0.611 \| good	7.478 \| good	0.123 \| good
2025-11-07T23:00:00.000Z	33 \| good	5.743 \| good	6.608 \| good	23.244 \| good	0.59 \| good	7.04 \| good	0.122 \| good
2025-11-08T00:00:00.000Z	33 \| good	6.067 \| good	6.852 \| good	22.027 \| good	0.514 \| good	7.509 \| good	0.121 \| good
2025-11-08T01:00:00.000Z	33 \| good	6.247 \| good	7.367 \| good	21.727 \| good	0.425 \| good	7.635 \| good	0.119 \| good
2025-11-08T02:00:00.000Z	33 \| good	6.382 \| good	8.255 \| good	22.927 \| good	0.334 \| good	6.76 \| good	0.119 \| good
2025-11-08T03:00:00.000Z	33 \| good	6.307 \| good	8.767 \| good	23.993 \| good	0.295 \| good	5.628 \| good	0.118 \| good
2025-11-08T04:00:00.000Z	38 \| good	6.624 \| good	9.186 \| good	23.508 \| good	0.292 \| good	5.354 \| good	0.115 \| good
2025-11-08T05:00:00.000Z	38 \| good	6.581 \| good	9.984 \| good	22.718 \| good	0.278 \| good	5.378 \| good	0.114 \| good
2025-11-08T06:00:00.000Z	33 \| good	6.491 \| good	10.081 \| good	22.113 \| good	0.28 \| good	4.663 \| good	0.114 \| good
2025-11-08T07:00:00.000Z	33 \| good	6.358 \| good	9.926 \| good	23.019 \| good	0.361 \| good	4.958 \| good	0.118 \| good
2025-11-08T08:00:00.000Z	33 \| good	6.04 \| good	9.674 \| good	21.752 \| good	0.387 \| good	4.958 \| good	0.12 \| good
2025-11-08T09:00:00.000Z	33 \| good	6.172 \| good	9.358 \| good	22.839 \| good	0.373 \| good	4.87 \| good	0.123 \| good
2025-11-08T10:00:00.000Z	33 \| good	5.69 \| good	9.064 \| good	25.613 \| good	0.357 \| good	4.623 \| good	0.123 \| good
2025-11-08T11:00:00.000Z	27 \| good	4.965 \| good	8.367 \| good	27.153 \| good	0.332 \| good	4.149 \| good	0.123 \| good
2025-11-08T12:00:00.000Z	26 \| good	4.296 \| good	7.598 \| good	27.55 \| good	0.291 \| good	3.923 \| good	0.123 \| good
2025-11-08T13:00:00.000Z	25 \| good	4.355 \| good	6.92 \| good	27.486 \| good	0.255 \| good	3.668 \| good	0.122 \| good
2025-11-08T14:00:00.000Z	27 \| good	3.694 \| good	6.745 \| good	28.998 \| good	0.252 \| good	3.74 \| good	0.121 \| good
2025-11-08T15:00:00.000Z	28 \| good	3.813 \| good	7.214 \| good	29.587 \| good	0.271 \| good	4.406 \| good	0.122 \| good
2025-11-08T16:00:00.000Z	27 \| good	5.101 \| good	9.106 \| good	26.722 \| good	0.371 \| good	5.53 \| good	0.128 \| good
2025-11-08T17:00:00.000Z	33 \| good	6.287 \| good	10.358 \| good	23.099 \| good	0.535 \| good	8.485 \| good	0.137 \| good
2025-11-08T18:00:00.000Z	44 \| good	8.029 \| good	12.219 \| good	17.593 \| good	0.637 \| good	13.682 \| good	0.146 \| good
2025-11-08T19:00:00.000Z	52 \| moderate	9.609 \| good	14.228 \| good	15.209 \| good	0.745 \| good	15.274 \| good	0.159 \| good
2025-11-08T20:00:00.000Z	54 \| moderate	10.718 \| good	16.245 \| good	11.883 \| good	0.813 \| good	16.101 \| good	0.166 \| good
2025-11-08T21:00:00.000Z	56 \| moderate	12.055 \| good	16.453 \| good	11.863 \| good	0.878 \| good	16.054 \| good	0.164 \| good
2025-11-08T22:00:00.000Z	56 \| moderate	12.396 \| fine	16.064 \| good	10.969 \| good	0.924 \| good	14.61 \| good	0.163 \| good
2025-11-08T23:00:00.000Z	58 \| moderate	12.618 \| fine	16.142 \| good	9.338 \| good	0.914 \| good	14.244 \| good	0.163 \| good
2025-11-09T00:00:00.000Z	58 \| moderate	13.022 \| fine	15.877 \| good	8.528 \| good	0.788 \| good	14.212 \| good	0.161 \| good
2025-11-09T01:00:00.000Z	58 \| moderate	12.865 \| fine	15.388 \| good	9.228 \| good	0.672 \| good	14.121 \| good	0.163 \| good
2025-11-09T02:00:00.000Z	56 \| moderate	12.451 \| fine	16.145 \| good	11.443 \| good	0.628 \| good	13.611 \| good	0.162 \| good
2025-11-09T03:00:00.000Z	58 \| moderate	12.701 \| fine	17.379 \| good	11.856 \| good	0.569 \| good	13.038 \| good	0.157 \| good
2025-11-09T04:00:00.000Z	56 \| moderate	12.218 \| fine	16.388 \| good	11.637 \| good	0.45 \| good	12.982 \| good	0.153 \| good
2025-11-09T05:00:00.000Z	56 \| moderate	11.807 \| good	15.234 \| good	11.207 \| good	0.324 \| good	12.549 \| good	0.15 \| good
2025-11-09T06:00:00.000Z	56 \| moderate	12.088 \| good	15.069 \| good	11.109 \| good	0.344 \| good	11.887 \| good	0.147 \| good
2025-11-09T07:00:00.000Z	56 \| moderate	11.664 \| good	15.428 \| good	12.295 \| good	0.427 \| good	14.548 \| good	0.143 \| good
2025-11-09T08:00:00.000Z	54 \| moderate	11.245 \| good	15.623 \| good	13.303 \| good	0.565 \| good	16.2 \| good	0.145 \| good
2025-11-09T09:00:00.000Z	54 \| moderate	11.027 \| good	15.689 \| good	16.442 \| good	0.693 \| good	13.967 \| good	0.146 \| good
2025-11-09T10:00:00.000Z	52 \| moderate	9.796 \| good	15.084 \| good	19.21 \| good	0.852 \| good	10.884 \| good	0.141 \| good
2025-11-09T11:00:00.000Z	44 \| good	7.702 \| good	13.41 \| good	23.64 \| good	0.734 \| good	9.246 \| good	0.138 \| good
2025-11-09T12:00:00.000Z	33 \| good	6.284 \| good	11.711 \| good	25.521 \| good	0.59 \| good	7.521 \| good	0.126 \| good
2025-11-09T13:00:00.000Z	33 \| good	5.761 \| good	10.465 \| good	29.11 \| good	0.477 \| good	6.176 \| good	0.123 \| good
2025-11-09T14:00:00.000Z	33 \| good	5.572 \| good	9.356 \| good	29.779 \| good	0.35 \| good	5.565 \| good	0.121 \| good
2025-11-09T15:00:00.000Z	29 \| good	5.005 \| good	7.337 \| good	30.671 \| good	0.326 \| good	5.84 \| good	0.122 \| good
2025-11-09T16:00:00.000Z	28 \| good	5.482 \| good	7.8 \| good	30.122 \| good	0.399 \| good	6.847 \| good	0.123 \| good

Hertford

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Hertford, Hertfordshire air quality map: Stay updated on AQI near you

0.01ppm

How accurate is Hertfordshire, UK air quality data?

Air quality and pollutant data for Hertfordshire, 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 Hertford, Hertfordshire?

The air quality information for Hertford, Hertfordshire is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Hertford, Hertfordshire at its worst?

In the past 24 hours, the air quality in Hertford, Hertfordshire was at its worst at 02:00:00 on 2025-11-07.

When did Hertford, Hertfordshire experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Hertford, Hertfordshire was observed at 11:00:00 on 2025-11-06.

What is the AQI in Hertford, Hertfordshire right now?

As of now, the AQI in Hertford, Hertfordshire is 44, indicating Good conditions.

What is the most common type of pollution in Hertford, Hertfordshire?

Hertford, Hertfordshire air has the highest levels of PM2.5.

What should I do in case of poor air quality in Hertford, Hertfordshire?

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

What is the PM_2.5 level in Hertford, Hertfordshire at the moment?

PM_2.5 levels in Hertford, Hertfordshire are currently 7.715 μg/m³.

What is the PM₁₀ level in Hertford, Hertfordshire at the moment?

The PM₁₀ concentration in Hertford, Hertfordshire is 17.52 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Hertford, Hertfordshire at the moment?

The current carbon monoxide (CO) concentration in Hertford, Hertfordshire is 0.008 ppm.

What is the sulfur dioxide (SO₂) level in Hertford, Hertfordshire at the moment?

Currently, Hertford, Hertfordshire has a sulfur dioxide (SO₂) concentration of 0.582 ppb.

What is the ozone (O₃) level in Hertford, Hertfordshire at the moment?

The current ozone (O₃) level in Hertford, Hertfordshire at the moment is 17.382 ppm.

What is the nitrogen dioxide (NO₂) level in Hertford, Hertfordshire at the moment?

Nitrogen dioxide (NO₂) level in Hertford, Hertfordshire at the moment is 9.681 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-11-06T05:00:00.000Z	38 \| good	7.076 \| good	9.709 \| good	21.806 \| good	0.302 \| good	4.51 \| good	0.124 \| good
2025-11-06T06:00:00.000Z	44 \| good	8.22 \| good	24.855 \| good	19.246 \| good	0.549 \| good	7.671 \| good	0.01 \| good
2025-11-06T07:00:00.000Z	33 \| good	5.773 \| good	18.983 \| good	17.06 \| good	0.949 \| good	8.678 \| good	0.603 \| good
2025-11-06T08:00:00.000Z	33 \| good	6.443 \| good	24.832 \| good	15.994 \| good	0.739 \| good	6.448 \| good	0.012 \| good
2025-11-06T09:00:00.000Z	49 \| good	8.502 \| good	16.701 \| good	15.702 \| good	1.043 \| good	17.335 \| good	0.514 \| good
2025-11-06T10:00:00.000Z	33 \| good	5.801 \| good	19.83 \| good	15.387 \| good	0.694 \| good	12.745 \| good	0.009 \| good
2025-11-06T11:00:00.000Z	38 \| good	6.589 \| good	18.4 \| good	16.246 \| good	0.618 \| good	10.761 \| good	0.008 \| good
2025-11-06T12:00:00.000Z	52 \| moderate	10.08 \| good	16.669 \| good	20.178 \| good	0.917 \| good	10.511 \| good	0.006 \| good
2025-11-06T13:00:00.000Z	49 \| good	8.76 \| good	21.88 \| good	18.81 \| good	0.733 \| good	10.242 \| good	0.005 \| good
2025-11-06T14:00:00.000Z	33 \| good	6.021 \| good	20.653 \| good	19.254 \| good	0.926 \| good	10.126 \| good	0.005 \| good
2025-11-06T15:00:00.000Z	44 \| good	8.333 \| good	20.666 \| good	18.405 \| good	0.915 \| good	9.128 \| good	0.006 \| good
2025-11-06T16:00:00.000Z	44 \| good	7.759 \| good	19.235 \| good	17.051 \| good	0.901 \| good	14.203 \| good	0.008 \| good
2025-11-06T17:00:00.000Z	52 \| moderate	9.617 \| good	34.223 \| good	19.038 \| good	0.918 \| good	16.539 \| good	0.015 \| good
2025-11-06T18:00:00.000Z	52 \| moderate	10.42 \| good	21.88 \| good	19.407 \| good	0.953 \| good	14.204 \| good	0.016 \| good
2025-11-06T19:00:00.000Z	38 \| good	6.956 \| good	13.529 \| good	21.727 \| good	1.072 \| good	17.507 \| good	0.017 \| good
2025-11-06T20:00:00.000Z	33 \| good	6.35 \| good	13.971 \| good	16.138 \| good	0.863 \| good	21.511 \| good	0.02 \| good
2025-11-06T21:00:00.000Z	33 \| good	5.991 \| good	24.219 \| good	15.082 \| good	0.844 \| good	11.072 \| good	0.016 \| good
2025-11-06T22:00:00.000Z	44 \| good	7.701 \| good	17.8 \| good	17.776 \| good	0.971 \| good	15.501 \| good	0.019 \| good
2025-11-06T23:00:00.000Z	38 \| good	6.803 \| good	31.397 \| good	13.755 \| good	0.846 \| good	16.158 \| good	0.021 \| good
2025-11-07T00:00:00.000Z	38 \| good	7.096 \| good	29.578 \| good	16.828 \| good	1.39 \| good	12.113 \| good	0.553 \| good
2025-11-07T01:00:00.000Z	38 \| good	6.621 \| good	25.387 \| good	14.058 \| good	1.539 \| good	11.983 \| good	0.485 \| good
2025-11-07T02:00:00.000Z	44 \| good	8.377 \| good	23.641 \| good	9.113 \| good	1.539 \| good	13.178 \| good	0.441 \| good
2025-11-07T03:00:00.000Z	44 \| good	7.993 \| good	22.313 \| good	9.933 \| good	2.182 \| good	13.597 \| good	0.401 \| good
2025-11-07T04:00:00.000Z	49 \| good	8.79 \| good	29.149 \| good	10.429 \| good	2.441 \| good	11.678 \| good	0.34 \| good
2025-11-07T05:00:00.000Z	49 \| good	9.044 \| good	23.372 \| good	12.978 \| good	2.157 \| good	11.136 \| good	0.338 \| good
2025-11-07T06:00:00.000Z	52 \| moderate	10.44 \| good	15.3 \| good	16.704 \| good	2.273 \| good	15.809 \| good	0.008 \| good
2025-11-07T07:00:00.000Z	33 \| good	5.593 \| good	13.111 \| good	11.367 \| good	2.299 \| good	6.066 \| good	0.011 \| good
2025-11-07T08:00:00.000Z	38 \| good	7.233 \| good	21.97 \| good	10.725 \| good	0.838 \| good	4.785 \| good	0.009 \| good
2025-11-07T09:00:00.000Z	54 \| moderate	10.695 \| good	12.466 \| good	13.34 \| good	0.52 \| good	11.44 \| good	0.144 \| good
2025-11-07T10:00:00.000Z	49 \| good	9.495 \| good	10.935 \| good	14.637 \| good	0.543 \| good	11.04 \| good	0.144 \| good
2025-11-07T11:00:00.000Z	44 \| good	8.222 \| good	9.792 \| good	14.884 \| good	0.568 \| good	9.926 \| good	0.147 \| good
2025-11-07T12:00:00.000Z	38 \| good	6.982 \| good	9.533 \| good	17.488 \| good	0.458 \| good	8.862 \| good	0.15 \| good
2025-11-07T13:00:00.000Z	49 \| good	9.176 \| good	21.379 \| good	14.51 \| good	0.525 \| good	13.223 \| good	0.008 \| good
2025-11-07T14:00:00.000Z	56 \| moderate	12.3 \| fine	14.797 \| good	16.893 \| good	0.532 \| good	8.691 \| good	0.011 \| good
2025-11-07T15:00:00.000Z	44 \| good	7.701 \| good	29.696 \| good	16.366 \| good	0.534 \| good	9.763 \| good	0.01 \| good
2025-11-07T16:00:00.000Z	38 \| good	6.934 \| good	20.674 \| good	15.217 \| good	0.649 \| good	9.879 \| good	0.011 \| good
2025-11-07T17:00:00.000Z	27 \| good	3.78 \| good	28.811 \| good	18.033 \| good	0.589 \| good	10.109 \| good	0.013 \| good
2025-11-07T18:00:00.000Z	22 \| good	4.44 \| good	14.968 \| good	20.515 \| good	2.041 \| good	9.773 \| good	0.016 \| good
2025-11-07T19:00:00.000Z	38 \| good	7.22 \| good	26.16 \| good	20.363 \| good	2.188 \| good	10.65 \| good	0.021 \| good
2025-11-07T20:00:00.000Z	49 \| good	8.565 \| good	28.246 \| good	22.953 \| good	1.957 \| good	10 \| good	0.019 \| good
2025-11-07T21:00:00.000Z	44 \| good	8.405 \| good	26.48 \| good	21.641 \| good	1.885 \| good	10.532 \| good	0.018 \| good
2025-11-07T22:00:00.000Z	52 \| moderate	10 \| good	18.8 \| good	18.827 \| good	1.717 \| good	9.383 \| good	0.021 \| good
2025-11-07T23:00:00.000Z	54 \| moderate	10.578 \| good	19.3 \| good	21.083 \| good	0.42 \| good	10.84 \| good	0.029 \| good
2025-11-08T00:00:00.000Z	52 \| moderate	9.6 \| good	17.529 \| good	19.158 \| good	1.697 \| good	4.396 \| good	0.861 \| good
2025-11-08T01:00:00.000Z	33 \| good	6.2 \| good	15.65 \| good	18.168 \| good	1.767 \| good	7.638 \| good	0.441 \| good
2025-11-08T02:00:00.000Z	27 \| good	5.399 \| good	18.46 \| good	16.841 \| good	1.491 \| good	8.384 \| good	0.332 \| good
2025-11-08T03:00:00.000Z	49 \| good	8.572 \| good	11.993 \| good	22.646 \| good	1.758 \| good	4.938 \| good	0.296 \| good
2025-11-08T04:00:00.000Z	33 \| good	6.421 \| good	11.932 \| good	19.598 \| good	1.481 \| good	4.628 \| good	0.296 \| good
2025-11-07T17:00:00.000Z	27 \| good	5.37 \| good	8.739 \| good	19.449 \| good	0.498 \| good	10.556 \| good	0.133 \| good
2025-11-07T18:00:00.000Z	33 \| good	5.866 \| good	9.259 \| good	18.033 \| good	0.596 \| good	12.833 \| good	0.135 \| good
2025-11-07T19:00:00.000Z	33 \| good	6.04 \| good	9.505 \| good	18.007 \| good	0.608 \| good	12.925 \| good	0.135 \| good
2025-11-07T20:00:00.000Z	33 \| good	6.085 \| good	8.837 \| good	19.485 \| good	0.582 \| good	10.773 \| good	0.129 \| good
2025-11-07T21:00:00.000Z	27 \| good	5.326 \| good	7.575 \| good	21.92 \| good	0.583 \| good	8.665 \| good	0.125 \| good
2025-11-07T22:00:00.000Z	27 \| good	5.097 \| good	6.531 \| good	22.505 \| good	0.611 \| good	7.478 \| good	0.123 \| good
2025-11-07T23:00:00.000Z	33 \| good	5.743 \| good	6.608 \| good	23.244 \| good	0.59 \| good	7.04 \| good	0.122 \| good
2025-11-08T00:00:00.000Z	33 \| good	6.067 \| good	6.852 \| good	22.027 \| good	0.514 \| good	7.509 \| good	0.121 \| good
2025-11-08T01:00:00.000Z	33 \| good	6.247 \| good	7.367 \| good	21.727 \| good	0.425 \| good	7.635 \| good	0.119 \| good
2025-11-08T02:00:00.000Z	33 \| good	6.382 \| good	8.255 \| good	22.927 \| good	0.334 \| good	6.76 \| good	0.119 \| good
2025-11-08T03:00:00.000Z	33 \| good	6.307 \| good	8.767 \| good	23.993 \| good	0.295 \| good	5.628 \| good	0.118 \| good
2025-11-08T04:00:00.000Z	38 \| good	6.624 \| good	9.186 \| good	23.508 \| good	0.292 \| good	5.354 \| good	0.115 \| good
2025-11-08T05:00:00.000Z	38 \| good	6.581 \| good	9.984 \| good	22.718 \| good	0.278 \| good	5.378 \| good	0.114 \| good
2025-11-08T06:00:00.000Z	33 \| good	6.491 \| good	10.081 \| good	22.113 \| good	0.28 \| good	4.663 \| good	0.114 \| good
2025-11-08T07:00:00.000Z	33 \| good	6.358 \| good	9.926 \| good	23.019 \| good	0.361 \| good	4.958 \| good	0.118 \| good
2025-11-08T08:00:00.000Z	33 \| good	6.04 \| good	9.674 \| good	21.752 \| good	0.387 \| good	4.958 \| good	0.12 \| good
2025-11-08T09:00:00.000Z	33 \| good	6.172 \| good	9.358 \| good	22.839 \| good	0.373 \| good	4.87 \| good	0.123 \| good
2025-11-08T10:00:00.000Z	33 \| good	5.69 \| good	9.064 \| good	25.613 \| good	0.357 \| good	4.623 \| good	0.123 \| good
2025-11-08T11:00:00.000Z	27 \| good	4.965 \| good	8.367 \| good	27.153 \| good	0.332 \| good	4.149 \| good	0.123 \| good
2025-11-08T12:00:00.000Z	26 \| good	4.296 \| good	7.598 \| good	27.55 \| good	0.291 \| good	3.923 \| good	0.123 \| good
2025-11-08T13:00:00.000Z	25 \| good	4.355 \| good	6.92 \| good	27.486 \| good	0.255 \| good	3.668 \| good	0.122 \| good
2025-11-08T14:00:00.000Z	27 \| good	3.694 \| good	6.745 \| good	28.998 \| good	0.252 \| good	3.74 \| good	0.121 \| good
2025-11-08T15:00:00.000Z	28 \| good	3.813 \| good	7.214 \| good	29.587 \| good	0.271 \| good	4.406 \| good	0.122 \| good
2025-11-08T16:00:00.000Z	27 \| good	5.101 \| good	9.106 \| good	26.722 \| good	0.371 \| good	5.53 \| good	0.128 \| good
2025-11-08T17:00:00.000Z	33 \| good	6.287 \| good	10.358 \| good	23.099 \| good	0.535 \| good	8.485 \| good	0.137 \| good
2025-11-08T18:00:00.000Z	44 \| good	8.029 \| good	12.219 \| good	17.593 \| good	0.637 \| good	13.682 \| good	0.146 \| good
2025-11-08T19:00:00.000Z	52 \| moderate	9.609 \| good	14.228 \| good	15.209 \| good	0.745 \| good	15.274 \| good	0.159 \| good
2025-11-08T20:00:00.000Z	54 \| moderate	10.718 \| good	16.245 \| good	11.883 \| good	0.813 \| good	16.101 \| good	0.166 \| good
2025-11-08T21:00:00.000Z	56 \| moderate	12.055 \| good	16.453 \| good	11.863 \| good	0.878 \| good	16.054 \| good	0.164 \| good
2025-11-08T22:00:00.000Z	56 \| moderate	12.396 \| fine	16.064 \| good	10.969 \| good	0.924 \| good	14.61 \| good	0.163 \| good
2025-11-08T23:00:00.000Z	58 \| moderate	12.618 \| fine	16.142 \| good	9.338 \| good	0.914 \| good	14.244 \| good	0.163 \| good
2025-11-09T00:00:00.000Z	58 \| moderate	13.022 \| fine	15.877 \| good	8.528 \| good	0.788 \| good	14.212 \| good	0.161 \| good
2025-11-09T01:00:00.000Z	58 \| moderate	12.865 \| fine	15.388 \| good	9.228 \| good	0.672 \| good	14.121 \| good	0.163 \| good
2025-11-09T02:00:00.000Z	56 \| moderate	12.451 \| fine	16.145 \| good	11.443 \| good	0.628 \| good	13.611 \| good	0.162 \| good
2025-11-09T03:00:00.000Z	58 \| moderate	12.701 \| fine	17.379 \| good	11.856 \| good	0.569 \| good	13.038 \| good	0.157 \| good
2025-11-09T04:00:00.000Z	56 \| moderate	12.218 \| fine	16.388 \| good	11.637 \| good	0.45 \| good	12.982 \| good	0.153 \| good
2025-11-09T05:00:00.000Z	56 \| moderate	11.807 \| good	15.234 \| good	11.207 \| good	0.324 \| good	12.549 \| good	0.15 \| good
2025-11-09T06:00:00.000Z	56 \| moderate	12.088 \| good	15.069 \| good	11.109 \| good	0.344 \| good	11.887 \| good	0.147 \| good
2025-11-09T07:00:00.000Z	56 \| moderate	11.664 \| good	15.428 \| good	12.295 \| good	0.427 \| good	14.548 \| good	0.143 \| good
2025-11-09T08:00:00.000Z	54 \| moderate	11.245 \| good	15.623 \| good	13.303 \| good	0.565 \| good	16.2 \| good	0.145 \| good
2025-11-09T09:00:00.000Z	54 \| moderate	11.027 \| good	15.689 \| good	16.442 \| good	0.693 \| good	13.967 \| good	0.146 \| good
2025-11-09T10:00:00.000Z	52 \| moderate	9.796 \| good	15.084 \| good	19.21 \| good	0.852 \| good	10.884 \| good	0.141 \| good
2025-11-09T11:00:00.000Z	44 \| good	7.702 \| good	13.41 \| good	23.64 \| good	0.734 \| good	9.246 \| good	0.138 \| good
2025-11-09T12:00:00.000Z	33 \| good	6.284 \| good	11.711 \| good	25.521 \| good	0.59 \| good	7.521 \| good	0.126 \| good
2025-11-09T13:00:00.000Z	33 \| good	5.761 \| good	10.465 \| good	29.11 \| good	0.477 \| good	6.176 \| good	0.123 \| good
2025-11-09T14:00:00.000Z	33 \| good	5.572 \| good	9.356 \| good	29.779 \| good	0.35 \| good	5.565 \| good	0.121 \| good
2025-11-09T15:00:00.000Z	29 \| good	5.005 \| good	7.337 \| good	30.671 \| good	0.326 \| good	5.84 \| good	0.122 \| good
2025-11-09T16:00:00.000Z	28 \| good	5.482 \| good	7.8 \| good	30.122 \| good	0.399 \| good	6.847 \| good	0.123 \| good

Live air quality index in Hertford, Hertfordshire today

Major air pollutants in Hertford, Hertfordshire

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Hertford, Hertfordshire air quality forecast and history

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Hertford, Hertfordshire air quality map: Stay updated on AQI near you

Air quality in nearby cities

Ware, Hertfordshire

Hoddesdon, Hertfordshire

Welwyn Garden City, Hertfordshire

Hatfield, Hertfordshire

Cheshunt, Hertfordshire

Harlow, Essex

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Air quality levels in UK

Frequently asked questions

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What is the PM2.5 level in Hertford, Hertfordshire at the moment?

What is the PM10 level in Hertford, Hertfordshire at the moment?

What is the carbon monoxide (CO) level in Hertford, Hertfordshire at the moment?

What is the sulfur dioxide (SO2) level in Hertford, Hertfordshire at the moment?

What is the ozone (O3) level in Hertford, Hertfordshire at the moment?

What is the nitrogen dioxide (NO2) level in Hertford, Hertfordshire 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 Hertford, Hertfordshire at the moment?

What is the PM₁₀ level in Hertford, Hertfordshire at the moment?

What is the sulfur dioxide (SO₂) level in Hertford, Hertfordshire at the moment?

What is the ozone (O₃) level in Hertford, Hertfordshire at the moment?

What is the nitrogen dioxide (NO₂) level in Hertford, Hertfordshire at the moment?