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

Currently, Hertford, Hertfordshire has a sulfur dioxide (SO2) concentration of 0.575 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 51.472 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 11.523 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 11.517 μg/m3.

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

The PM10 concentration in Hertford, Hertfordshire is 24.451 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)

Moderate

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)

11.52 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

24.45 μg/m³

155

255

425

605+

Ozone (O₃)

51.47 ppb

201

201+

Sulfur Dioxide (SO₂)

0.57 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

11.52 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.01 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

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
2026-08-12T19:00:00.000Z	44 \| good	8.053 \| good	28.7 \| good	39.02 \| good	0.997 \| good	7.001 \| good	0.013 \| good
2026-08-12T20:00:00.000Z	49 \| good	8.657 \| good	24.791 \| good	43.461 \| good	1.127 \| good	5.836 \| good	0.013 \| good
2026-08-12T21:00:00.000Z	58 \| moderate	6.337 \| good	18.983 \| good	56.623 \| fine	0.844 \| good	7.091 \| good	0.01 \| good
2026-08-12T22:00:00.000Z	58 \| moderate	6.223 \| good	21.068 \| good	57.153 \| fine	0.998 \| good	6.855 \| good	0.011 \| good
2026-08-12T23:00:00.000Z	51 \| moderate	5.991 \| good	25.735 \| good	54.609 \| good	1.003 \| good	5.203 \| good	0.011 \| good
2026-08-13T00:00:00.000Z	58 \| moderate	6.594 \| good	26.879 \| good	56.969 \| fine	1.136 \| good	6.683 \| good	0.165 \| good
2026-08-13T01:00:00.000Z	61 \| moderate	8.73 \| good	23.974 \| good	57.943 \| fine	0.841 \| good	8.156 \| good	0.153 \| good
2026-08-13T02:00:00.000Z	49 \| good	8.937 \| good	26.041 \| good	51.15 \| good	0.763 \| good	7.632 \| good	0.158 \| good
2026-08-13T03:00:00.000Z	38 \| good	6.666 \| good	22.928 \| good	40.297 \| good	0.675 \| good	9.053 \| good	0.158 \| good
2026-08-13T04:00:00.000Z	36 \| good	6.147 \| good	24.138 \| good	39.224 \| good	0.843 \| good	8.561 \| good	0.165 \| good
2026-08-13T05:00:00.000Z	38 \| good	6.594 \| good	20.281 \| good	33.191 \| good	0.774 \| good	10.356 \| good	0.011 \| good
2026-08-13T06:00:00.000Z	44 \| good	8.392 \| good	26.202 \| good	41.822 \| good	0.792 \| good	8.823 \| good	0.011 \| good
2026-08-13T07:00:00.000Z	49 \| good	9.119 \| good	23.33 \| good	43.242 \| good	0.694 \| good	10.152 \| good	0.011 \| good
2026-08-13T08:00:00.000Z	38 \| good	7.045 \| good	25.17 \| good	35.464 \| good	0.704 \| good	18.025 \| good	0.011 \| good
2026-08-13T09:00:00.000Z	33 \| good	6.109 \| good	13.919 \| good	30.955 \| good	0.842 \| good	11.525 \| good	0.012 \| good
2026-08-13T10:00:00.000Z	47 \| good	7.999 \| good	30.502 \| good	51.416 \| good	5.289 \| good	16.691 \| good	0.011 \| good
2026-08-13T11:00:00.000Z	41 \| good	7.488 \| good	17.293 \| good	43.878 \| good	0.8 \| good	11.947 \| good	0.011 \| good
2026-08-13T12:00:00.000Z	49 \| good	9.049 \| good	28.707 \| good	33.557 \| good	0.818 \| good	9.288 \| good	0.011 \| good
2026-08-13T13:00:00.000Z	44 \| good	7.668 \| good	36.769 \| good	35.336 \| good	0.818 \| good	10.118 \| good	0.012 \| good
2026-08-13T14:00:00.000Z	49 \| good	9.172 \| good	28.741 \| good	36.13 \| good	1.034 \| good	11.191 \| good	0.011 \| good
2026-08-13T15:00:00.000Z	49 \| good	8.681 \| good	23.74 \| good	44.539 \| good	0.894 \| good	10.196 \| good	0.012 \| good
2026-08-13T16:00:00.000Z	49 \| good	8.803 \| good	24.3 \| good	47.149 \| good	0.927 \| good	12.624 \| good	0.012 \| good
2026-08-13T17:00:00.000Z	101 \| sensitive	7.148 \| good	24.62 \| good	70.73 \| fine	0.979 \| good	12.235 \| good	0.011 \| good
2026-08-13T18:00:00.000Z	97 \| moderate	8.88 \| good	27.469 \| good	68.957 \| fine	0.927 \| good	13.252 \| good	0.015 \| good
2026-08-13T19:00:00.000Z	74 \| moderate	9.846 \| good	34.146 \| good	62.302 \| fine	0.778 \| good	11.442 \| good	0.014 \| good
2026-08-13T20:00:00.000Z	93 \| moderate	8.38 \| good	24.945 \| good	67.82 \| fine	0.849 \| good	16.92 \| good	0.015 \| good
2026-08-13T21:00:00.000Z	49 \| good	6.86 \| good	23.708 \| good	53.258 \| good	0.665 \| good	23.547 \| good	0.017 \| good
2026-08-13T22:00:00.000Z	50 \| good	7.91 \| good	20.781 \| good	53.941 \| good	0.814 \| good	20.141 \| good	0.012 \| good
2026-08-13T23:00:00.000Z	67 \| moderate	9.077 \| good	22.972 \| good	59.825 \| fine	0.74 \| good	9.48 \| good	0.009 \| good
2026-08-14T00:00:00.000Z	74 \| moderate	7.977 \| good	26.559 \| good	62.077 \| fine	0.836 \| good	16.607 \| good	0.151 \| good
2026-08-14T01:00:00.000Z	80 \| moderate	9.909 \| good	28.38 \| good	63.968 \| fine	0.674 \| good	19.311 \| good	0.139 \| good
2026-08-14T02:00:00.000Z	56 \| moderate	11.804 \| good	28.58 \| good	56.277 \| fine	0.876 \| good	10.128 \| good	0.142 \| good
2026-08-14T03:00:00.000Z	56 \| moderate	12.343 \| fine	25.319 \| good	54.256 \| good	0.899 \| good	8.743 \| good	0.148 \| good
2026-08-14T04:00:00.000Z	48 \| good	8.197 \| good	24.559 \| good	51.745 \| good	0.896 \| good	7.884 \| good	0.148 \| good
2026-08-14T05:00:00.000Z	49 \| good	7.732 \| good	21.909 \| good	53.357 \| good	0.756 \| good	8.528 \| good	0.01 \| good
2026-08-14T06:00:00.000Z	77 \| moderate	7.397 \| good	27 \| good	63.34 \| fine	0.683 \| good	8.325 \| good	0.01 \| good
2026-08-14T07:00:00.000Z	49 \| good	7.928 \| good	24.778 \| good	53.052 \| good	0.704 \| good	15.847 \| good	0.011 \| good
2026-08-14T08:00:00.000Z	46 \| good	7.955 \| good	24.511 \| good	50.231 \| good	0.717 \| good	15.322 \| good	0.011 \| good
2026-08-14T09:00:00.000Z	49 \| good	8.636 \| good	25.154 \| good	48.324 \| good	0.649 \| good	12.732 \| good	0.011 \| good
2026-08-14T10:00:00.000Z	44 \| good	7.582 \| good	21.798 \| good	47.791 \| good	0.762 \| good	13.18 \| good	0.011 \| good
2026-08-14T11:00:00.000Z	54 \| moderate	11.42 \| good	32.055 \| good	42.556 \| good	0.672 \| good	9.051 \| good	0.011 \| good
2026-08-14T12:00:00.000Z	44 \| good	8.266 \| good	22.368 \| good	37.382 \| good	0.779 \| good	12.04 \| good	0.012 \| good
2026-08-14T13:00:00.000Z	49 \| good	8.926 \| good	29.177 \| good	34.489 \| good	0.625 \| good	11.055 \| good	0.012 \| good
2026-08-14T14:00:00.000Z	44 \| good	8.041 \| good	27.623 \| good	47.235 \| good	0.649 \| good	8.646 \| good	0.013 \| good
2026-08-14T15:00:00.000Z	44 \| good	8.042 \| good	26.496 \| good	44.061 \| good	0.65 \| good	8.903 \| good	0.012 \| good
2026-08-14T16:00:00.000Z	52 \| moderate	9.606 \| good	27.465 \| good	45.958 \| good	0.649 \| good	10.053 \| good	0.012 \| good
2026-08-14T17:00:00.000Z	52 \| moderate	9.8 \| good	22.12 \| good	45.251 \| good	0.574 \| good	10.899 \| good	0.012 \| good
2026-08-14T18:00:00.000Z	56 \| moderate	11.517 \| good	24.451 \| good	51.472 \| good	0.575 \| good	11.523 \| good	0.009 \| good
2026-08-14T18:00:00.000Z	37 \| good	3.805 \| good	6.382 \| good	39.817 \| good	0.109 \| good	1.885 \| good	0.109 \| good
2026-08-14T19:00:00.000Z	33 \| good	3.548 \| good	6.997 \| good	36.16 \| good	0.126 \| good	2.455 \| good	0.108 \| good
2026-08-14T20:00:00.000Z	31 \| good	3.832 \| good	7.346 \| good	34.224 \| good	0.174 \| good	3.668 \| good	0.112 \| good
2026-08-14T21:00:00.000Z	28 \| good	4.217 \| good	7.454 \| good	30.459 \| good	0.238 \| good	6.173 \| good	0.116 \| good
2026-08-14T22:00:00.000Z	27 \| good	4.56 \| good	7.12 \| good	29.159 \| good	0.231 \| good	4.406 \| good	0.119 \| good
2026-08-14T23:00:00.000Z	27 \| good	4.604 \| good	6.524 \| good	28.695 \| good	0.276 \| good	4.512 \| good	0.118 \| good
2026-08-15T00:00:00.000Z	27 \| good	4.653 \| good	5.459 \| good	26.627 \| good	0.263 \| good	3.534 \| good	0.119 \| good
2026-08-15T01:00:00.000Z	23 \| good	4.39 \| good	5.216 \| good	25.13 \| good	0.24 \| good	3.118 \| good	0.117 \| good
2026-08-15T02:00:00.000Z	22 \| good	4.001 \| good	4.973 \| good	23.584 \| good	0.212 \| good	2.863 \| good	0.115 \| good
2026-08-15T03:00:00.000Z	22 \| good	3.761 \| good	4.669 \| good	24.185 \| good	0.158 \| good	2.333 \| good	0.113 \| good
2026-08-15T04:00:00.000Z	22 \| good	3.353 \| good	4.779 \| good	23.768 \| good	0.12 \| good	2.211 \| good	0.112 \| good
2026-08-15T05:00:00.000Z	21 \| good	3.267 \| good	5.103 \| good	22.928 \| good	0.121 \| good	2.363 \| good	0.11 \| good
2026-08-15T06:00:00.000Z	20 \| good	3.302 \| good	5.778 \| good	21.565 \| good	0.124 \| good	2.328 \| good	0.11 \| good
2026-08-15T07:00:00.000Z	22 \| good	3.784 \| good	6.28 \| good	20.777 \| good	0.137 \| good	2.138 \| good	0.112 \| good
2026-08-15T08:00:00.000Z	22 \| good	4.173 \| good	6.16 \| good	21.992 \| good	0.152 \| good	1.982 \| good	0.113 \| good
2026-08-15T09:00:00.000Z	22 \| good	4.112 \| good	6.352 \| good	22.919 \| good	0.166 \| good	1.966 \| good	0.113 \| good
2026-08-15T10:00:00.000Z	24 \| good	4.404 \| good	6.215 \| good	26.063 \| good	0.164 \| good	1.988 \| good	0.113 \| good
2026-08-15T11:00:00.000Z	25 \| good	4.493 \| good	6.283 \| good	26.732 \| good	0.189 \| good	1.992 \| good	0.114 \| good
2026-08-15T12:00:00.000Z	27 \| good	4.558 \| good	6.749 \| good	28.234 \| good	0.232 \| good	1.808 \| good	0.115 \| good
2026-08-15T13:00:00.000Z	28 \| good	4.477 \| good	6.952 \| good	29.968 \| good	0.279 \| good	1.472 \| good	0.114 \| good
2026-08-15T14:00:00.000Z	31 \| good	4.419 \| good	6.9 \| good	33.285 \| good	0.241 \| good	1.314 \| good	0.114 \| good
2026-08-15T15:00:00.000Z	32 \| good	4.444 \| good	6.611 \| good	35.063 \| good	0.219 \| good	1.118 \| good	0.114 \| good
2026-08-15T16:00:00.000Z	34 \| good	4.483 \| good	6.829 \| good	36.637 \| good	0.23 \| good	1.035 \| good	0.116 \| good
2026-08-15T17:00:00.000Z	36 \| good	4.584 \| good	6.452 \| good	38.683 \| good	0.232 \| good	1.024 \| good	0.116 \| good
2026-08-15T18:00:00.000Z	35 \| good	4.42 \| good	6.187 \| good	38.047 \| good	0.233 \| good	1.097 \| good	0.115 \| good
2026-08-15T19:00:00.000Z	32 \| good	4.361 \| good	6.466 \| good	35.148 \| good	0.22 \| good	1.509 \| good	0.114 \| good
2026-08-15T20:00:00.000Z	31 \| good	4.413 \| good	6.885 \| good	32.816 \| good	0.259 \| good	2.504 \| good	0.117 \| good
2026-08-15T21:00:00.000Z	25 \| good	4.496 \| good	7.087 \| good	27.386 \| good	0.254 \| good	3.77 \| good	0.12 \| good
2026-08-15T22:00:00.000Z	22 \| good	4.488 \| good	7.271 \| good	23.628 \| good	0.246 \| good	4.633 \| good	0.121 \| good
2026-08-15T23:00:00.000Z	22 \| good	4.413 \| good	7.383 \| good	20.195 \| good	0.18 \| good	4.377 \| good	0.118 \| good
2026-08-16T00:00:00.000Z	27 \| good	4.576 \| good	7.421 \| good	18.325 \| good	0.167 \| good	4.579 \| good	0.116 \| good
2026-08-16T01:00:00.000Z	27 \| good	4.62 \| good	7.698 \| good	18.059 \| good	0.183 \| good	5.166 \| good	0.116 \| good
2026-08-16T02:00:00.000Z	27 \| good	5.111 \| good	8.036 \| good	16.87 \| good	0.197 \| good	5.382 \| good	0.117 \| good
2026-08-16T03:00:00.000Z	33 \| good	5.571 \| good	8.037 \| good	14.873 \| good	0.225 \| good	5.28 \| good	0.117 \| good
2026-08-16T04:00:00.000Z	33 \| good	5.933 \| good	8.333 \| good	12.749 \| good	0.228 \| good	4.977 \| good	0.119 \| good
2026-08-16T05:00:00.000Z	33 \| good	5.812 \| good	9.162 \| good	12.441 \| good	0.235 \| good	4.834 \| good	0.119 \| good
2026-08-16T06:00:00.000Z	33 \| good	5.878 \| good	9.687 \| good	15.156 \| good	0.254 \| good	4.272 \| good	0.12 \| good
2026-08-16T07:00:00.000Z	33 \| good	5.975 \| good	9.904 \| good	17.529 \| good	0.277 \| good	3.518 \| good	0.121 \| good
2026-08-16T08:00:00.000Z	33 \| good	6.148 \| good	9.367 \| good	22.522 \| good	0.274 \| good	2.793 \| good	0.12 \| good
2026-08-16T09:00:00.000Z	33 \| good	5.747 \| good	9.044 \| good	26.104 \| good	0.241 \| good	2.081 \| good	0.12 \| good
2026-08-16T10:00:00.000Z	28 \| good	5.086 \| good	8.631 \| good	30.409 \| good	0.219 \| good	1.736 \| good	0.12 \| good
2026-08-16T11:00:00.000Z	33 \| good	4.876 \| good	7.526 \| good	35.926 \| good	0.189 \| good	1.462 \| good	0.12 \| good
2026-08-16T12:00:00.000Z	38 \| good	4.779 \| good	7.194 \| good	40.547 \| good	0.18 \| good	1.136 \| good	0.118 \| good
2026-08-16T13:00:00.000Z	41 \| good	4.377 \| good	6.829 \| good	43.755 \| good	0.147 \| good	0.943 \| good	0.116 \| good
2026-08-16T14:00:00.000Z	41 \| good	4.088 \| good	6.623 \| good	44.368 \| good	0.125 \| good	0.889 \| good	0.115 \| good
2026-08-16T15:00:00.000Z	40 \| good	4.239 \| good	6.661 \| good	43.442 \| good	0.131 \| good	0.951 \| good	0.115 \| good
2026-08-16T16:00:00.000Z	40 \| good	4.486 \| good	7.071 \| good	42.918 \| good	0.135 \| good	1.094 \| good	0.116 \| good
2026-08-16T17:00:00.000Z	40 \| good	4.611 \| good	7.777 \| good	42.682 \| good	0.15 \| good	1.284 \| good	0.118 \| good

Hertford

Get reliable air quality data to drive your business

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

Air quality levels in UK

Check live rankings of places in the UK affected by air pollution.

View Polluted Cities

Check live rankings of places in the UK with the cleanest air.

View Clean Cities

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 06:00:00 on 2026-08-13.

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 03:00:00 on 2026-08-14.

What is the AQI in Hertford, Hertfordshire right now?

As of now, the AQI in Hertford, Hertfordshire is 56, indicating Moderate 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 11.517 μg/m³.

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

The PM₁₀ concentration in Hertford, Hertfordshire is 24.451 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 0.009 ppm.

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

Currently, Hertford, Hertfordshire has a sulfur dioxide (SO₂) concentration of 0.575 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 51.472 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 11.523 ppb.

Certified

APIs

Refund Policy

Historical Climate Data

Terms & Conditions

Refund Policy

Terms & Conditions

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-08-12T19:00:00.000Z	44 \| good	8.053 \| good	28.7 \| good	39.02 \| good	0.997 \| good	7.001 \| good	0.013 \| good
2026-08-12T20:00:00.000Z	49 \| good	8.657 \| good	24.791 \| good	43.461 \| good	1.127 \| good	5.836 \| good	0.013 \| good
2026-08-12T21:00:00.000Z	58 \| moderate	6.337 \| good	18.983 \| good	56.623 \| fine	0.844 \| good	7.091 \| good	0.01 \| good
2026-08-12T22:00:00.000Z	58 \| moderate	6.223 \| good	21.068 \| good	57.153 \| fine	0.998 \| good	6.855 \| good	0.011 \| good
2026-08-12T23:00:00.000Z	51 \| moderate	5.991 \| good	25.735 \| good	54.609 \| good	1.003 \| good	5.203 \| good	0.011 \| good
2026-08-13T00:00:00.000Z	58 \| moderate	6.594 \| good	26.879 \| good	56.969 \| fine	1.136 \| good	6.683 \| good	0.165 \| good
2026-08-13T01:00:00.000Z	61 \| moderate	8.73 \| good	23.974 \| good	57.943 \| fine	0.841 \| good	8.156 \| good	0.153 \| good
2026-08-13T02:00:00.000Z	49 \| good	8.937 \| good	26.041 \| good	51.15 \| good	0.763 \| good	7.632 \| good	0.158 \| good
2026-08-13T03:00:00.000Z	38 \| good	6.666 \| good	22.928 \| good	40.297 \| good	0.675 \| good	9.053 \| good	0.158 \| good
2026-08-13T04:00:00.000Z	36 \| good	6.147 \| good	24.138 \| good	39.224 \| good	0.843 \| good	8.561 \| good	0.165 \| good
2026-08-13T05:00:00.000Z	38 \| good	6.594 \| good	20.281 \| good	33.191 \| good	0.774 \| good	10.356 \| good	0.011 \| good
2026-08-13T06:00:00.000Z	44 \| good	8.392 \| good	26.202 \| good	41.822 \| good	0.792 \| good	8.823 \| good	0.011 \| good
2026-08-13T07:00:00.000Z	49 \| good	9.119 \| good	23.33 \| good	43.242 \| good	0.694 \| good	10.152 \| good	0.011 \| good
2026-08-13T08:00:00.000Z	38 \| good	7.045 \| good	25.17 \| good	35.464 \| good	0.704 \| good	18.025 \| good	0.011 \| good
2026-08-13T09:00:00.000Z	33 \| good	6.109 \| good	13.919 \| good	30.955 \| good	0.842 \| good	11.525 \| good	0.012 \| good
2026-08-13T10:00:00.000Z	47 \| good	7.999 \| good	30.502 \| good	51.416 \| good	5.289 \| good	16.691 \| good	0.011 \| good
2026-08-13T11:00:00.000Z	41 \| good	7.488 \| good	17.293 \| good	43.878 \| good	0.8 \| good	11.947 \| good	0.011 \| good
2026-08-13T12:00:00.000Z	49 \| good	9.049 \| good	28.707 \| good	33.557 \| good	0.818 \| good	9.288 \| good	0.011 \| good
2026-08-13T13:00:00.000Z	44 \| good	7.668 \| good	36.769 \| good	35.336 \| good	0.818 \| good	10.118 \| good	0.012 \| good
2026-08-13T14:00:00.000Z	49 \| good	9.172 \| good	28.741 \| good	36.13 \| good	1.034 \| good	11.191 \| good	0.011 \| good
2026-08-13T15:00:00.000Z	49 \| good	8.681 \| good	23.74 \| good	44.539 \| good	0.894 \| good	10.196 \| good	0.012 \| good
2026-08-13T16:00:00.000Z	49 \| good	8.803 \| good	24.3 \| good	47.149 \| good	0.927 \| good	12.624 \| good	0.012 \| good
2026-08-13T17:00:00.000Z	101 \| sensitive	7.148 \| good	24.62 \| good	70.73 \| fine	0.979 \| good	12.235 \| good	0.011 \| good
2026-08-13T18:00:00.000Z	97 \| moderate	8.88 \| good	27.469 \| good	68.957 \| fine	0.927 \| good	13.252 \| good	0.015 \| good
2026-08-13T19:00:00.000Z	74 \| moderate	9.846 \| good	34.146 \| good	62.302 \| fine	0.778 \| good	11.442 \| good	0.014 \| good
2026-08-13T20:00:00.000Z	93 \| moderate	8.38 \| good	24.945 \| good	67.82 \| fine	0.849 \| good	16.92 \| good	0.015 \| good
2026-08-13T21:00:00.000Z	49 \| good	6.86 \| good	23.708 \| good	53.258 \| good	0.665 \| good	23.547 \| good	0.017 \| good
2026-08-13T22:00:00.000Z	50 \| good	7.91 \| good	20.781 \| good	53.941 \| good	0.814 \| good	20.141 \| good	0.012 \| good
2026-08-13T23:00:00.000Z	67 \| moderate	9.077 \| good	22.972 \| good	59.825 \| fine	0.74 \| good	9.48 \| good	0.009 \| good
2026-08-14T00:00:00.000Z	74 \| moderate	7.977 \| good	26.559 \| good	62.077 \| fine	0.836 \| good	16.607 \| good	0.151 \| good
2026-08-14T01:00:00.000Z	80 \| moderate	9.909 \| good	28.38 \| good	63.968 \| fine	0.674 \| good	19.311 \| good	0.139 \| good
2026-08-14T02:00:00.000Z	56 \| moderate	11.804 \| good	28.58 \| good	56.277 \| fine	0.876 \| good	10.128 \| good	0.142 \| good
2026-08-14T03:00:00.000Z	56 \| moderate	12.343 \| fine	25.319 \| good	54.256 \| good	0.899 \| good	8.743 \| good	0.148 \| good
2026-08-14T04:00:00.000Z	48 \| good	8.197 \| good	24.559 \| good	51.745 \| good	0.896 \| good	7.884 \| good	0.148 \| good
2026-08-14T05:00:00.000Z	49 \| good	7.732 \| good	21.909 \| good	53.357 \| good	0.756 \| good	8.528 \| good	0.01 \| good
2026-08-14T06:00:00.000Z	77 \| moderate	7.397 \| good	27 \| good	63.34 \| fine	0.683 \| good	8.325 \| good	0.01 \| good
2026-08-14T07:00:00.000Z	49 \| good	7.928 \| good	24.778 \| good	53.052 \| good	0.704 \| good	15.847 \| good	0.011 \| good
2026-08-14T08:00:00.000Z	46 \| good	7.955 \| good	24.511 \| good	50.231 \| good	0.717 \| good	15.322 \| good	0.011 \| good
2026-08-14T09:00:00.000Z	49 \| good	8.636 \| good	25.154 \| good	48.324 \| good	0.649 \| good	12.732 \| good	0.011 \| good
2026-08-14T10:00:00.000Z	44 \| good	7.582 \| good	21.798 \| good	47.791 \| good	0.762 \| good	13.18 \| good	0.011 \| good
2026-08-14T11:00:00.000Z	54 \| moderate	11.42 \| good	32.055 \| good	42.556 \| good	0.672 \| good	9.051 \| good	0.011 \| good
2026-08-14T12:00:00.000Z	44 \| good	8.266 \| good	22.368 \| good	37.382 \| good	0.779 \| good	12.04 \| good	0.012 \| good
2026-08-14T13:00:00.000Z	49 \| good	8.926 \| good	29.177 \| good	34.489 \| good	0.625 \| good	11.055 \| good	0.012 \| good
2026-08-14T14:00:00.000Z	44 \| good	8.041 \| good	27.623 \| good	47.235 \| good	0.649 \| good	8.646 \| good	0.013 \| good
2026-08-14T15:00:00.000Z	44 \| good	8.042 \| good	26.496 \| good	44.061 \| good	0.65 \| good	8.903 \| good	0.012 \| good
2026-08-14T16:00:00.000Z	52 \| moderate	9.606 \| good	27.465 \| good	45.958 \| good	0.649 \| good	10.053 \| good	0.012 \| good
2026-08-14T17:00:00.000Z	52 \| moderate	9.8 \| good	22.12 \| good	45.251 \| good	0.574 \| good	10.899 \| good	0.012 \| good
2026-08-14T18:00:00.000Z	56 \| moderate	11.517 \| good	24.451 \| good	51.472 \| good	0.575 \| good	11.523 \| good	0.009 \| good
2026-08-14T18:00:00.000Z	37 \| good	3.805 \| good	6.382 \| good	39.817 \| good	0.109 \| good	1.885 \| good	0.109 \| good
2026-08-14T19:00:00.000Z	33 \| good	3.548 \| good	6.997 \| good	36.16 \| good	0.126 \| good	2.455 \| good	0.108 \| good
2026-08-14T20:00:00.000Z	31 \| good	3.832 \| good	7.346 \| good	34.224 \| good	0.174 \| good	3.668 \| good	0.112 \| good
2026-08-14T21:00:00.000Z	28 \| good	4.217 \| good	7.454 \| good	30.459 \| good	0.238 \| good	6.173 \| good	0.116 \| good
2026-08-14T22:00:00.000Z	27 \| good	4.56 \| good	7.12 \| good	29.159 \| good	0.231 \| good	4.406 \| good	0.119 \| good
2026-08-14T23:00:00.000Z	27 \| good	4.604 \| good	6.524 \| good	28.695 \| good	0.276 \| good	4.512 \| good	0.118 \| good
2026-08-15T00:00:00.000Z	27 \| good	4.653 \| good	5.459 \| good	26.627 \| good	0.263 \| good	3.534 \| good	0.119 \| good
2026-08-15T01:00:00.000Z	23 \| good	4.39 \| good	5.216 \| good	25.13 \| good	0.24 \| good	3.118 \| good	0.117 \| good
2026-08-15T02:00:00.000Z	22 \| good	4.001 \| good	4.973 \| good	23.584 \| good	0.212 \| good	2.863 \| good	0.115 \| good
2026-08-15T03:00:00.000Z	22 \| good	3.761 \| good	4.669 \| good	24.185 \| good	0.158 \| good	2.333 \| good	0.113 \| good
2026-08-15T04:00:00.000Z	22 \| good	3.353 \| good	4.779 \| good	23.768 \| good	0.12 \| good	2.211 \| good	0.112 \| good
2026-08-15T05:00:00.000Z	21 \| good	3.267 \| good	5.103 \| good	22.928 \| good	0.121 \| good	2.363 \| good	0.11 \| good
2026-08-15T06:00:00.000Z	20 \| good	3.302 \| good	5.778 \| good	21.565 \| good	0.124 \| good	2.328 \| good	0.11 \| good
2026-08-15T07:00:00.000Z	22 \| good	3.784 \| good	6.28 \| good	20.777 \| good	0.137 \| good	2.138 \| good	0.112 \| good
2026-08-15T08:00:00.000Z	22 \| good	4.173 \| good	6.16 \| good	21.992 \| good	0.152 \| good	1.982 \| good	0.113 \| good
2026-08-15T09:00:00.000Z	22 \| good	4.112 \| good	6.352 \| good	22.919 \| good	0.166 \| good	1.966 \| good	0.113 \| good
2026-08-15T10:00:00.000Z	24 \| good	4.404 \| good	6.215 \| good	26.063 \| good	0.164 \| good	1.988 \| good	0.113 \| good
2026-08-15T11:00:00.000Z	25 \| good	4.493 \| good	6.283 \| good	26.732 \| good	0.189 \| good	1.992 \| good	0.114 \| good
2026-08-15T12:00:00.000Z	27 \| good	4.558 \| good	6.749 \| good	28.234 \| good	0.232 \| good	1.808 \| good	0.115 \| good
2026-08-15T13:00:00.000Z	28 \| good	4.477 \| good	6.952 \| good	29.968 \| good	0.279 \| good	1.472 \| good	0.114 \| good
2026-08-15T14:00:00.000Z	31 \| good	4.419 \| good	6.9 \| good	33.285 \| good	0.241 \| good	1.314 \| good	0.114 \| good
2026-08-15T15:00:00.000Z	32 \| good	4.444 \| good	6.611 \| good	35.063 \| good	0.219 \| good	1.118 \| good	0.114 \| good
2026-08-15T16:00:00.000Z	34 \| good	4.483 \| good	6.829 \| good	36.637 \| good	0.23 \| good	1.035 \| good	0.116 \| good
2026-08-15T17:00:00.000Z	36 \| good	4.584 \| good	6.452 \| good	38.683 \| good	0.232 \| good	1.024 \| good	0.116 \| good
2026-08-15T18:00:00.000Z	35 \| good	4.42 \| good	6.187 \| good	38.047 \| good	0.233 \| good	1.097 \| good	0.115 \| good
2026-08-15T19:00:00.000Z	32 \| good	4.361 \| good	6.466 \| good	35.148 \| good	0.22 \| good	1.509 \| good	0.114 \| good
2026-08-15T20:00:00.000Z	31 \| good	4.413 \| good	6.885 \| good	32.816 \| good	0.259 \| good	2.504 \| good	0.117 \| good
2026-08-15T21:00:00.000Z	25 \| good	4.496 \| good	7.087 \| good	27.386 \| good	0.254 \| good	3.77 \| good	0.12 \| good
2026-08-15T22:00:00.000Z	22 \| good	4.488 \| good	7.271 \| good	23.628 \| good	0.246 \| good	4.633 \| good	0.121 \| good
2026-08-15T23:00:00.000Z	22 \| good	4.413 \| good	7.383 \| good	20.195 \| good	0.18 \| good	4.377 \| good	0.118 \| good
2026-08-16T00:00:00.000Z	27 \| good	4.576 \| good	7.421 \| good	18.325 \| good	0.167 \| good	4.579 \| good	0.116 \| good
2026-08-16T01:00:00.000Z	27 \| good	4.62 \| good	7.698 \| good	18.059 \| good	0.183 \| good	5.166 \| good	0.116 \| good
2026-08-16T02:00:00.000Z	27 \| good	5.111 \| good	8.036 \| good	16.87 \| good	0.197 \| good	5.382 \| good	0.117 \| good
2026-08-16T03:00:00.000Z	33 \| good	5.571 \| good	8.037 \| good	14.873 \| good	0.225 \| good	5.28 \| good	0.117 \| good
2026-08-16T04:00:00.000Z	33 \| good	5.933 \| good	8.333 \| good	12.749 \| good	0.228 \| good	4.977 \| good	0.119 \| good
2026-08-16T05:00:00.000Z	33 \| good	5.812 \| good	9.162 \| good	12.441 \| good	0.235 \| good	4.834 \| good	0.119 \| good
2026-08-16T06:00:00.000Z	33 \| good	5.878 \| good	9.687 \| good	15.156 \| good	0.254 \| good	4.272 \| good	0.12 \| good
2026-08-16T07:00:00.000Z	33 \| good	5.975 \| good	9.904 \| good	17.529 \| good	0.277 \| good	3.518 \| good	0.121 \| good
2026-08-16T08:00:00.000Z	33 \| good	6.148 \| good	9.367 \| good	22.522 \| good	0.274 \| good	2.793 \| good	0.12 \| good
2026-08-16T09:00:00.000Z	33 \| good	5.747 \| good	9.044 \| good	26.104 \| good	0.241 \| good	2.081 \| good	0.12 \| good
2026-08-16T10:00:00.000Z	28 \| good	5.086 \| good	8.631 \| good	30.409 \| good	0.219 \| good	1.736 \| good	0.12 \| good
2026-08-16T11:00:00.000Z	33 \| good	4.876 \| good	7.526 \| good	35.926 \| good	0.189 \| good	1.462 \| good	0.12 \| good
2026-08-16T12:00:00.000Z	38 \| good	4.779 \| good	7.194 \| good	40.547 \| good	0.18 \| good	1.136 \| good	0.118 \| good
2026-08-16T13:00:00.000Z	41 \| good	4.377 \| good	6.829 \| good	43.755 \| good	0.147 \| good	0.943 \| good	0.116 \| good
2026-08-16T14:00:00.000Z	41 \| good	4.088 \| good	6.623 \| good	44.368 \| good	0.125 \| good	0.889 \| good	0.115 \| good
2026-08-16T15:00:00.000Z	40 \| good	4.239 \| good	6.661 \| good	43.442 \| good	0.131 \| good	0.951 \| good	0.115 \| good
2026-08-16T16:00:00.000Z	40 \| good	4.486 \| good	7.071 \| good	42.918 \| good	0.135 \| good	1.094 \| good	0.116 \| good
2026-08-16T17:00:00.000Z	40 \| good	4.611 \| good	7.777 \| good	42.682 \| good	0.15 \| good	1.284 \| good	0.118 \| 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

Get reliable air quality data to drive your business

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

How accurate is Hertfordshire, UK air quality data?

Air quality levels in UK

Frequently asked questions

How often is air quality information updated for Hertford, Hertfordshire?

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

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

What is the AQI in Hertford, Hertfordshire right now?

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

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

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?