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

Currently, Hertford, Hertfordshire has a sulfur dioxide (SO2) concentration of 1.012 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 28.933 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 6.637 ppb.

Real-time air quality index in Hertford, Hertfordshire today

Name: Live air pollution levels in Hertford, Hertfordshire today
Creator: Ambee

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)

11.26 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

26.04 μg/m³

155

255

425

605+

Ozone (O₃)

59.77 ppb

201

201+

Sulfur Dioxide (SO₂)

1.68 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.58 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.01 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

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
2025-06-18T23:00:00.000Z	44 \| good	7.088 \| good	10.981 \| good	47.444 \| good	0.909 \| good	8.096 \| good	0.369 \| good
2025-06-19T00:00:00.000Z	49 \| good	9.493 \| good	31.893 \| good	42.41 \| good	0.883 \| good	8.388 \| good	0.329 \| good
2025-06-19T01:00:00.000Z	38 \| good	6.357 \| good	21.347 \| good	40.596 \| good	0.971 \| good	11.462 \| good	0.295 \| good
2025-06-19T02:00:00.000Z	38 \| good	7.185 \| good	24.88 \| good	39.03 \| good	1.073 \| good	18.202 \| good	0.322 \| good
2025-06-19T03:00:00.000Z	44 \| good	7.759 \| good	23.904 \| good	36.95 \| good	1.071 \| good	14.114 \| good	0.348 \| good
2025-06-19T04:00:00.000Z	49 \| good	9.066 \| good	17.858 \| good	28.933 \| good	1.012 \| good	6.637 \| good	0.356 \| good
2025-06-19T05:00:00.000Z	52 \| moderate	10.28 \| good	16.375 \| good	27.095 \| good	0.962 \| good	4.511 \| good	0.02 \| good
2025-06-19T06:00:00.000Z	49 \| good	9.116 \| good	21.278 \| good	26.583 \| good	1.018 \| good	14.529 \| good	0.015 \| good
2025-06-19T07:00:00.000Z	49 \| good	8.591 \| good	27.52 \| good	28.96 \| good	1.003 \| good	8.718 \| good	0.014 \| good
2025-06-19T08:00:00.000Z	52 \| moderate	9.9 \| good	26.98 \| good	40.331 \| good	1.059 \| good	6.722 \| good	0.014 \| good
2025-06-19T09:00:00.000Z	54 \| moderate	11.32 \| good	19 \| good	39.88 \| good	1.088 \| good	13.732 \| good	0.014 \| good
2025-06-19T10:00:00.000Z	38 \| good	6.694 \| good	36.04 \| good	19.898 \| good	1.385 \| good	13.199 \| good	0.014 \| good
2025-06-19T11:00:00.000Z	49 \| good	9.177 \| good	9.995 \| good	28.283 \| good	0.924 \| good	5.958 \| good	0.013 \| good
2025-06-19T12:00:00.000Z	44 \| good	8.149 \| good	22.588 \| good	33.793 \| good	0.919 \| good	5.224 \| good	0.009 \| good
2025-06-19T13:00:00.000Z	44 \| good	8.165 \| good	21.942 \| good	32.935 \| good	1.018 \| good	5.427 \| good	0.013 \| good
2025-06-19T14:00:00.000Z	49 \| good	9.13 \| good	14.653 \| good	39.347 \| good	1.192 \| good	8.481 \| good	0.014 \| good
2025-06-19T15:00:00.000Z	45 \| good	8.376 \| good	14.844 \| good	49.487 \| good	1.13 \| good	5.084 \| good	0.014 \| good
2025-06-19T16:00:00.000Z	52 \| moderate	9.766 \| good	19.398 \| good	50.035 \| good	1.131 \| good	5.134 \| good	0.013 \| good
2025-06-19T17:00:00.000Z	58 \| moderate	9.689 \| good	16.842 \| good	57.127 \| fine	1.194 \| good	8.988 \| good	0.014 \| good
2025-06-19T18:00:00.000Z	51 \| moderate	8.854 \| good	18.842 \| good	55.016 \| fine	1.205 \| good	11.035 \| good	0.015 \| good
2025-06-19T19:00:00.000Z	44 \| good	8.099 \| good	27.52 \| good	41.871 \| good	1.188 \| good	7.939 \| good	0.015 \| good
2025-06-19T20:00:00.000Z	49 \| good	9.44 \| good	18.569 \| good	52.347 \| good	1.266 \| good	12.436 \| good	0.015 \| good
2025-06-19T21:00:00.000Z	49 \| good	8.905 \| good	26.08 \| good	52.449 \| good	1.116 \| good	11.479 \| good	0.016 \| good
2025-06-19T22:00:00.000Z	44 \| good	7.833 \| good	23.595 \| good	45.345 \| good	1.423 \| good	9.053 \| good	0.012 \| good
2025-06-19T23:00:00.000Z	45 \| good	7.615 \| good	17.566 \| good	48.878 \| good	1.43 \| good	4.186 \| good	0.013 \| good
2025-06-20T00:00:00.000Z	60 \| moderate	14.28 \| fine	21.64 \| good	56.416 \| fine	1.169 \| good	8.26 \| good	0.249 \| good
2025-06-20T01:00:00.000Z	60 \| moderate	14.24 \| fine	22.229 \| good	48.278 \| good	1.245 \| good	5.994 \| good	0.24 \| good
2025-06-20T02:00:00.000Z	62 \| moderate	14.9 \| fine	17.813 \| good	50.662 \| good	1.255 \| good	7.59 \| good	0.295 \| good
2025-06-20T03:00:00.000Z	60 \| moderate	14.2 \| fine	43.361 \| good	45.223 \| good	1.187 \| good	4.995 \| good	0.239 \| good
2025-06-20T04:00:00.000Z	60 \| moderate	13.803 \| fine	18.128 \| good	45.095 \| good	0.989 \| good	4.921 \| good	0.244 \| good
2025-06-20T05:00:00.000Z	54 \| moderate	11.169 \| good	13.984 \| good	37.875 \| good	1.242 \| good	5.214 \| good	0.014 \| good
2025-06-20T06:00:00.000Z	52 \| moderate	10.327 \| good	30.084 \| good	39.806 \| good	1.115 \| good	5.863 \| good	0.015 \| good
2025-06-20T07:00:00.000Z	56 \| moderate	11.765 \| good	19.338 \| good	30.611 \| good	1.335 \| good	7.074 \| good	0.015 \| good
2025-06-20T08:00:00.000Z	60 \| moderate	13.949 \| fine	20.328 \| good	29.942 \| good	1.248 \| good	8.657 \| good	0.015 \| good
2025-06-20T09:00:00.000Z	49 \| good	8.64 \| good	20.791 \| good	32.044 \| good	1.678 \| good	9.697 \| good	0.014 \| good
2025-06-20T10:00:00.000Z	64 \| moderate	15.706 \| fine	21.108 \| good	35.867 \| good	1.552 \| good	12.716 \| good	0.014 \| good
2025-06-20T11:00:00.000Z	64 \| moderate	16.302 \| fine	31.06 \| good	32.096 \| good	1.52 \| good	6.383 \| good	0.014 \| good
2025-06-20T12:00:00.000Z	49 \| good	8.64 \| good	25.64 \| good	30.622 \| good	1.347 \| good	4.737 \| good	0.013 \| good
2025-06-20T13:00:00.000Z	60 \| moderate	14.342 \| fine	31.06 \| good	41.012 \| good	1.421 \| good	5.256 \| good	0.009 \| good
2025-06-20T14:00:00.000Z	58 \| moderate	12.58 \| fine	21.658 \| good	42.853 \| good	1.382 \| good	4.234 \| good	0.013 \| good
2025-06-20T15:00:00.000Z	58 \| moderate	12.78 \| fine	49.66 \| good	42.429 \| good	1.502 \| good	5.668 \| good	0.013 \| good
2025-06-20T16:00:00.000Z	64 \| moderate	15.84 \| fine	32 \| good	47.9 \| good	1.469 \| good	5.446 \| good	0.013 \| good
2025-06-20T17:00:00.000Z	49 \| good	8.982 \| good	27.2 \| good	42.51 \| good	1.626 \| good	5.365 \| good	0.013 \| good
2025-06-20T18:00:00.000Z	52 \| moderate	10.091 \| good	19.628 \| good	46.752 \| good	1.554 \| good	5.164 \| good	0.013 \| good
2025-06-20T19:00:00.000Z	52 \| moderate	9.762 \| good	20.747 \| good	47.357 \| good	1.555 \| good	5.978 \| good	0.014 \| good
2025-06-20T20:00:00.000Z	61 \| moderate	10.389 \| good	18.793 \| good	57.897 \| fine	1.56 \| good	4.382 \| good	0.013 \| good
2025-06-20T21:00:00.000Z	67 \| moderate	11.258 \| good	26.035 \| good	59.768 \| fine	1.683 \| good	3.58 \| good	0.013 \| good
2025-06-20T22:00:00.000Z	62 \| moderate	15 \| fine	25.552 \| good	58.299 \| fine	1.74 \| good	4.373 \| good	0.012 \| good
2025-06-20T22:00:00.000Z	67 \| moderate	11.258 \| good	26.035 \| good	59.768 \| fine	1.683 \| good	3.58 \| good	0.013 \| good
2025-06-19T06:00:00.000Z	60 \| moderate	13.717 \| fine	18.009 \| good	20.513 \| good	0.395 \| good	7.466 \| good	0.163 \| good
2025-06-19T07:00:00.000Z	56 \| moderate	12.201 \| fine	15.192 \| good	24.435 \| good	0.51 \| good	7.62 \| good	0.164 \| good
2025-06-19T08:00:00.000Z	54 \| moderate	11.117 \| good	15.155 \| good	28.761 \| good	0.594 \| good	7.62 \| good	0.168 \| good
2025-06-19T09:00:00.000Z	54 \| moderate	10.67 \| good	15.166 \| good	36.017 \| good	0.645 \| good	7.041 \| good	0.17 \| good
2025-06-19T10:00:00.000Z	52 \| moderate	9.912 \| good	15.15 \| good	45.99 \| good	0.589 \| good	5.844 \| good	0.162 \| good
2025-06-19T11:00:00.000Z	54 \| moderate	10.981 \| good	14.081 \| good	53.162 \| good	0.49 \| good	4.308 \| good	0.158 \| good
2025-06-19T12:00:00.000Z	74 \| moderate	10.895 \| good	13.758 \| good	61.635 \| fine	0.441 \| good	3.137 \| good	0.157 \| good
2025-06-19T13:00:00.000Z	93 \| moderate	10.29 \| good	13.818 \| good	67.719 \| fine	0.409 \| good	2.447 \| good	0.157 \| good
2025-06-19T14:00:00.000Z	105 \| sensitive	10.169 \| good	13.671 \| good	71.656 \| moderate	0.376 \| good	1.977 \| good	0.158 \| good
2025-06-19T15:00:00.000Z	101 \| sensitive	9.539 \| good	12.897 \| good	71.272 \| moderate	0.331 \| good	1.762 \| good	0.158 \| good
2025-06-19T16:00:00.000Z	90 \| moderate	8.788 \| good	12.656 \| good	67.071 \| fine	0.284 \| good	1.859 \| good	0.158 \| good
2025-06-19T17:00:00.000Z	71 \| moderate	8.334 \| good	12.329 \| good	61.497 \| fine	0.32 \| good	2.518 \| good	0.157 \| good
2025-06-19T18:00:00.000Z	50 \| good	7.561 \| good	9.719 \| good	54.032 \| good	0.319 \| good	3.182 \| good	0.148 \| good
2025-06-19T19:00:00.000Z	44 \| good	7.304 \| good	8.945 \| good	47.869 \| good	0.304 \| good	3.945 \| good	0.143 \| good
2025-06-19T20:00:00.000Z	40 \| good	7.002 \| good	9.337 \| good	43.144 \| good	0.319 \| good	4.946 \| good	0.142 \| good
2025-06-19T21:00:00.000Z	38 \| good	6.632 \| good	10.901 \| good	40.057 \| good	0.333 \| good	5.523 \| good	0.14 \| good
2025-06-19T22:00:00.000Z	34 \| good	6.487 \| good	11.17 \| good	37.086 \| good	0.299 \| good	5.869 \| good	0.139 \| good
2025-06-19T23:00:00.000Z	33 \| good	6.371 \| good	10.628 \| good	35.707 \| good	0.255 \| good	5.681 \| good	0.138 \| good
2025-06-20T00:00:00.000Z	38 \| good	6.634 \| good	10.674 \| good	33.583 \| good	0.218 \| good	5.739 \| good	0.136 \| good
2025-06-20T01:00:00.000Z	38 \| good	7.365 \| good	10.514 \| good	31.044 \| good	0.19 \| good	5.751 \| good	0.134 \| good
2025-06-20T02:00:00.000Z	38 \| good	7.465 \| good	10.647 \| good	29.821 \| good	0.171 \| good	5.182 \| good	0.133 \| good
2025-06-20T03:00:00.000Z	38 \| good	7.445 \| good	11.207 \| good	28.106 \| good	0.187 \| good	4.94 \| good	0.133 \| good
2025-06-20T04:00:00.000Z	44 \| good	7.663 \| good	12.177 \| good	26.757 \| good	0.216 \| good	5.305 \| good	0.135 \| good
2025-06-20T05:00:00.000Z	52 \| moderate	9.808 \| good	13.2 \| good	25.288 \| good	0.382 \| good	6.022 \| good	0.147 \| good
2025-06-20T06:00:00.000Z	52 \| moderate	10.176 \| good	14.881 \| good	23.823 \| good	0.479 \| good	6.496 \| good	0.155 \| good
2025-06-20T07:00:00.000Z	52 \| moderate	10.385 \| good	15.02 \| good	23.91 \| good	0.579 \| good	8.168 \| good	0.16 \| good
2025-06-20T08:00:00.000Z	49 \| good	8.655 \| good	12.989 \| good	27.778 \| good	0.604 \| good	7.921 \| good	0.161 \| good
2025-06-20T09:00:00.000Z	44 \| good	7.868 \| good	11.154 \| good	32.054 \| good	0.614 \| good	7.08 \| good	0.157 \| good
2025-06-20T10:00:00.000Z	38 \| good	7.002 \| good	9.717 \| good	35.326 \| good	0.577 \| good	5.741 \| good	0.155 \| good
2025-06-20T11:00:00.000Z	38 \| good	6.502 \| good	9.735 \| good	39.65 \| good	0.515 \| good	4.521 \| good	0.152 \| good
2025-06-20T12:00:00.000Z	41 \| good	6.725 \| good	9.47 \| good	43.807 \| good	0.463 \| good	3.614 \| good	0.148 \| good
2025-06-20T13:00:00.000Z	43 \| good	6.541 \| good	9.115 \| good	45.661 \| good	0.416 \| good	2.835 \| good	0.149 \| good
2025-06-20T14:00:00.000Z	44 \| good	6.507 \| good	8.677 \| good	47.275 \| good	0.416 \| good	2.441 \| good	0.149 \| good
2025-06-20T15:00:00.000Z	44 \| good	6.204 \| good	8.599 \| good	47.606 \| good	0.44 \| good	2.384 \| good	0.148 \| good
2025-06-20T16:00:00.000Z	44 \| good	6.178 \| good	8.939 \| good	47.776 \| good	0.427 \| good	2.856 \| good	0.147 \| good
2025-06-20T17:00:00.000Z	44 \| good	6.614 \| good	8.766 \| good	47.222 \| good	0.465 \| good	3.19 \| good	0.148 \| good
2025-06-20T18:00:00.000Z	43 \| good	6.786 \| good	8.501 \| good	46.486 \| good	0.577 \| good	3.551 \| good	0.151 \| good
2025-06-20T19:00:00.000Z	40 \| good	6.827 \| good	8.88 \| good	43.406 \| good	0.573 \| good	3.452 \| good	0.149 \| good
2025-06-20T20:00:00.000Z	44 \| good	7.626 \| good	10.007 \| good	40.517 \| good	0.601 \| good	4.701 \| good	0.149 \| good
2025-06-20T21:00:00.000Z	44 \| good	8.416 \| good	12.647 \| good	38.744 \| good	0.616 \| good	7.374 \| good	0.155 \| good
2025-06-20T22:00:00.000Z	49 \| good	9.272 \| good	13.474 \| good	34.083 \| good	0.582 \| good	7.918 \| good	0.155 \| good
2025-06-20T23:00:00.000Z	52 \| moderate	10.274 \| good	14.993 \| good	33.191 \| good	0.503 \| good	8.586 \| good	0.155 \| good
2025-06-21T00:00:00.000Z	54 \| moderate	11.227 \| good	15.664 \| good	33.449 \| good	0.418 \| good	8.191 \| good	0.159 \| good
2025-06-21T01:00:00.000Z	58 \| moderate	12.704 \| fine	17.212 \| good	31.511 \| good	0.359 \| good	8.599 \| good	0.164 \| good
2025-06-21T02:00:00.000Z	58 \| moderate	13.161 \| fine	18.418 \| good	27.592 \| good	0.346 \| good	8.142 \| good	0.17 \| good
2025-06-21T03:00:00.000Z	58 \| moderate	13.055 \| fine	17.704 \| good	22.125 \| good	0.35 \| good	8.991 \| good	0.174 \| good
2025-06-21T04:00:00.000Z	58 \| moderate	13.353 \| fine	17.16 \| good	19.914 \| good	0.407 \| good	9.105 \| good	0.174 \| good
2025-06-21T05:00:00.000Z	56 \| moderate	12.447 \| fine	17.068 \| good	23.704 \| good	0.525 \| good	8.489 \| good	0.172 \| good

Hertford

Get reliable air quality data to drive your business

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

0.36ppm

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 04:00:00 on 2025-06-19.

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 01:00:00 on 2025-06-18.

What is the AQI in Hertford, Hertfordshire right now?

As of now, the AQI in Hertford, Hertfordshire is 49, 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 9.066 μg/m³.

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

The PM₁₀ concentration in Hertford, Hertfordshire is 17.858 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 0.356 ppm.

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

Currently, Hertford, Hertfordshire has a sulfur dioxide (SO₂) concentration of 1.012 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 28.933 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 6.637 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-18T23:00:00.000Z	44 \| good	7.088 \| good	10.981 \| good	47.444 \| good	0.909 \| good	8.096 \| good	0.369 \| good
2025-06-19T00:00:00.000Z	49 \| good	9.493 \| good	31.893 \| good	42.41 \| good	0.883 \| good	8.388 \| good	0.329 \| good
2025-06-19T01:00:00.000Z	38 \| good	6.357 \| good	21.347 \| good	40.596 \| good	0.971 \| good	11.462 \| good	0.295 \| good
2025-06-19T02:00:00.000Z	38 \| good	7.185 \| good	24.88 \| good	39.03 \| good	1.073 \| good	18.202 \| good	0.322 \| good
2025-06-19T03:00:00.000Z	44 \| good	7.759 \| good	23.904 \| good	36.95 \| good	1.071 \| good	14.114 \| good	0.348 \| good
2025-06-19T04:00:00.000Z	49 \| good	9.066 \| good	17.858 \| good	28.933 \| good	1.012 \| good	6.637 \| good	0.356 \| good
2025-06-19T05:00:00.000Z	52 \| moderate	10.28 \| good	16.375 \| good	27.095 \| good	0.962 \| good	4.511 \| good	0.02 \| good
2025-06-19T06:00:00.000Z	49 \| good	9.116 \| good	21.278 \| good	26.583 \| good	1.018 \| good	14.529 \| good	0.015 \| good
2025-06-19T07:00:00.000Z	49 \| good	8.591 \| good	27.52 \| good	28.96 \| good	1.003 \| good	8.718 \| good	0.014 \| good
2025-06-19T08:00:00.000Z	52 \| moderate	9.9 \| good	26.98 \| good	40.331 \| good	1.059 \| good	6.722 \| good	0.014 \| good
2025-06-19T09:00:00.000Z	54 \| moderate	11.32 \| good	19 \| good	39.88 \| good	1.088 \| good	13.732 \| good	0.014 \| good
2025-06-19T10:00:00.000Z	38 \| good	6.694 \| good	36.04 \| good	19.898 \| good	1.385 \| good	13.199 \| good	0.014 \| good
2025-06-19T11:00:00.000Z	49 \| good	9.177 \| good	9.995 \| good	28.283 \| good	0.924 \| good	5.958 \| good	0.013 \| good
2025-06-19T12:00:00.000Z	44 \| good	8.149 \| good	22.588 \| good	33.793 \| good	0.919 \| good	5.224 \| good	0.009 \| good
2025-06-19T13:00:00.000Z	44 \| good	8.165 \| good	21.942 \| good	32.935 \| good	1.018 \| good	5.427 \| good	0.013 \| good
2025-06-19T14:00:00.000Z	49 \| good	9.13 \| good	14.653 \| good	39.347 \| good	1.192 \| good	8.481 \| good	0.014 \| good
2025-06-19T15:00:00.000Z	45 \| good	8.376 \| good	14.844 \| good	49.487 \| good	1.13 \| good	5.084 \| good	0.014 \| good
2025-06-19T16:00:00.000Z	52 \| moderate	9.766 \| good	19.398 \| good	50.035 \| good	1.131 \| good	5.134 \| good	0.013 \| good
2025-06-19T17:00:00.000Z	58 \| moderate	9.689 \| good	16.842 \| good	57.127 \| fine	1.194 \| good	8.988 \| good	0.014 \| good
2025-06-19T18:00:00.000Z	51 \| moderate	8.854 \| good	18.842 \| good	55.016 \| fine	1.205 \| good	11.035 \| good	0.015 \| good
2025-06-19T19:00:00.000Z	44 \| good	8.099 \| good	27.52 \| good	41.871 \| good	1.188 \| good	7.939 \| good	0.015 \| good
2025-06-19T20:00:00.000Z	49 \| good	9.44 \| good	18.569 \| good	52.347 \| good	1.266 \| good	12.436 \| good	0.015 \| good
2025-06-19T21:00:00.000Z	49 \| good	8.905 \| good	26.08 \| good	52.449 \| good	1.116 \| good	11.479 \| good	0.016 \| good
2025-06-19T22:00:00.000Z	44 \| good	7.833 \| good	23.595 \| good	45.345 \| good	1.423 \| good	9.053 \| good	0.012 \| good
2025-06-19T23:00:00.000Z	45 \| good	7.615 \| good	17.566 \| good	48.878 \| good	1.43 \| good	4.186 \| good	0.013 \| good
2025-06-20T00:00:00.000Z	60 \| moderate	14.28 \| fine	21.64 \| good	56.416 \| fine	1.169 \| good	8.26 \| good	0.249 \| good
2025-06-20T01:00:00.000Z	60 \| moderate	14.24 \| fine	22.229 \| good	48.278 \| good	1.245 \| good	5.994 \| good	0.24 \| good
2025-06-20T02:00:00.000Z	62 \| moderate	14.9 \| fine	17.813 \| good	50.662 \| good	1.255 \| good	7.59 \| good	0.295 \| good
2025-06-20T03:00:00.000Z	60 \| moderate	14.2 \| fine	43.361 \| good	45.223 \| good	1.187 \| good	4.995 \| good	0.239 \| good
2025-06-20T04:00:00.000Z	60 \| moderate	13.803 \| fine	18.128 \| good	45.095 \| good	0.989 \| good	4.921 \| good	0.244 \| good
2025-06-20T05:00:00.000Z	54 \| moderate	11.169 \| good	13.984 \| good	37.875 \| good	1.242 \| good	5.214 \| good	0.014 \| good
2025-06-20T06:00:00.000Z	52 \| moderate	10.327 \| good	30.084 \| good	39.806 \| good	1.115 \| good	5.863 \| good	0.015 \| good
2025-06-20T07:00:00.000Z	56 \| moderate	11.765 \| good	19.338 \| good	30.611 \| good	1.335 \| good	7.074 \| good	0.015 \| good
2025-06-20T08:00:00.000Z	60 \| moderate	13.949 \| fine	20.328 \| good	29.942 \| good	1.248 \| good	8.657 \| good	0.015 \| good
2025-06-20T09:00:00.000Z	49 \| good	8.64 \| good	20.791 \| good	32.044 \| good	1.678 \| good	9.697 \| good	0.014 \| good
2025-06-20T10:00:00.000Z	64 \| moderate	15.706 \| fine	21.108 \| good	35.867 \| good	1.552 \| good	12.716 \| good	0.014 \| good
2025-06-20T11:00:00.000Z	64 \| moderate	16.302 \| fine	31.06 \| good	32.096 \| good	1.52 \| good	6.383 \| good	0.014 \| good
2025-06-20T12:00:00.000Z	49 \| good	8.64 \| good	25.64 \| good	30.622 \| good	1.347 \| good	4.737 \| good	0.013 \| good
2025-06-20T13:00:00.000Z	60 \| moderate	14.342 \| fine	31.06 \| good	41.012 \| good	1.421 \| good	5.256 \| good	0.009 \| good
2025-06-20T14:00:00.000Z	58 \| moderate	12.58 \| fine	21.658 \| good	42.853 \| good	1.382 \| good	4.234 \| good	0.013 \| good
2025-06-20T15:00:00.000Z	58 \| moderate	12.78 \| fine	49.66 \| good	42.429 \| good	1.502 \| good	5.668 \| good	0.013 \| good
2025-06-20T16:00:00.000Z	64 \| moderate	15.84 \| fine	32 \| good	47.9 \| good	1.469 \| good	5.446 \| good	0.013 \| good
2025-06-20T17:00:00.000Z	49 \| good	8.982 \| good	27.2 \| good	42.51 \| good	1.626 \| good	5.365 \| good	0.013 \| good
2025-06-20T18:00:00.000Z	52 \| moderate	10.091 \| good	19.628 \| good	46.752 \| good	1.554 \| good	5.164 \| good	0.013 \| good
2025-06-20T19:00:00.000Z	52 \| moderate	9.762 \| good	20.747 \| good	47.357 \| good	1.555 \| good	5.978 \| good	0.014 \| good
2025-06-20T20:00:00.000Z	61 \| moderate	10.389 \| good	18.793 \| good	57.897 \| fine	1.56 \| good	4.382 \| good	0.013 \| good
2025-06-20T21:00:00.000Z	67 \| moderate	11.258 \| good	26.035 \| good	59.768 \| fine	1.683 \| good	3.58 \| good	0.013 \| good
2025-06-20T22:00:00.000Z	62 \| moderate	15 \| fine	25.552 \| good	58.299 \| fine	1.74 \| good	4.373 \| good	0.012 \| good
2025-06-20T22:00:00.000Z	67 \| moderate	11.258 \| good	26.035 \| good	59.768 \| fine	1.683 \| good	3.58 \| good	0.013 \| good
2025-06-19T06:00:00.000Z	60 \| moderate	13.717 \| fine	18.009 \| good	20.513 \| good	0.395 \| good	7.466 \| good	0.163 \| good
2025-06-19T07:00:00.000Z	56 \| moderate	12.201 \| fine	15.192 \| good	24.435 \| good	0.51 \| good	7.62 \| good	0.164 \| good
2025-06-19T08:00:00.000Z	54 \| moderate	11.117 \| good	15.155 \| good	28.761 \| good	0.594 \| good	7.62 \| good	0.168 \| good
2025-06-19T09:00:00.000Z	54 \| moderate	10.67 \| good	15.166 \| good	36.017 \| good	0.645 \| good	7.041 \| good	0.17 \| good
2025-06-19T10:00:00.000Z	52 \| moderate	9.912 \| good	15.15 \| good	45.99 \| good	0.589 \| good	5.844 \| good	0.162 \| good
2025-06-19T11:00:00.000Z	54 \| moderate	10.981 \| good	14.081 \| good	53.162 \| good	0.49 \| good	4.308 \| good	0.158 \| good
2025-06-19T12:00:00.000Z	74 \| moderate	10.895 \| good	13.758 \| good	61.635 \| fine	0.441 \| good	3.137 \| good	0.157 \| good
2025-06-19T13:00:00.000Z	93 \| moderate	10.29 \| good	13.818 \| good	67.719 \| fine	0.409 \| good	2.447 \| good	0.157 \| good
2025-06-19T14:00:00.000Z	105 \| sensitive	10.169 \| good	13.671 \| good	71.656 \| moderate	0.376 \| good	1.977 \| good	0.158 \| good
2025-06-19T15:00:00.000Z	101 \| sensitive	9.539 \| good	12.897 \| good	71.272 \| moderate	0.331 \| good	1.762 \| good	0.158 \| good
2025-06-19T16:00:00.000Z	90 \| moderate	8.788 \| good	12.656 \| good	67.071 \| fine	0.284 \| good	1.859 \| good	0.158 \| good
2025-06-19T17:00:00.000Z	71 \| moderate	8.334 \| good	12.329 \| good	61.497 \| fine	0.32 \| good	2.518 \| good	0.157 \| good
2025-06-19T18:00:00.000Z	50 \| good	7.561 \| good	9.719 \| good	54.032 \| good	0.319 \| good	3.182 \| good	0.148 \| good
2025-06-19T19:00:00.000Z	44 \| good	7.304 \| good	8.945 \| good	47.869 \| good	0.304 \| good	3.945 \| good	0.143 \| good
2025-06-19T20:00:00.000Z	40 \| good	7.002 \| good	9.337 \| good	43.144 \| good	0.319 \| good	4.946 \| good	0.142 \| good
2025-06-19T21:00:00.000Z	38 \| good	6.632 \| good	10.901 \| good	40.057 \| good	0.333 \| good	5.523 \| good	0.14 \| good
2025-06-19T22:00:00.000Z	34 \| good	6.487 \| good	11.17 \| good	37.086 \| good	0.299 \| good	5.869 \| good	0.139 \| good
2025-06-19T23:00:00.000Z	33 \| good	6.371 \| good	10.628 \| good	35.707 \| good	0.255 \| good	5.681 \| good	0.138 \| good
2025-06-20T00:00:00.000Z	38 \| good	6.634 \| good	10.674 \| good	33.583 \| good	0.218 \| good	5.739 \| good	0.136 \| good
2025-06-20T01:00:00.000Z	38 \| good	7.365 \| good	10.514 \| good	31.044 \| good	0.19 \| good	5.751 \| good	0.134 \| good
2025-06-20T02:00:00.000Z	38 \| good	7.465 \| good	10.647 \| good	29.821 \| good	0.171 \| good	5.182 \| good	0.133 \| good
2025-06-20T03:00:00.000Z	38 \| good	7.445 \| good	11.207 \| good	28.106 \| good	0.187 \| good	4.94 \| good	0.133 \| good
2025-06-20T04:00:00.000Z	44 \| good	7.663 \| good	12.177 \| good	26.757 \| good	0.216 \| good	5.305 \| good	0.135 \| good
2025-06-20T05:00:00.000Z	52 \| moderate	9.808 \| good	13.2 \| good	25.288 \| good	0.382 \| good	6.022 \| good	0.147 \| good
2025-06-20T06:00:00.000Z	52 \| moderate	10.176 \| good	14.881 \| good	23.823 \| good	0.479 \| good	6.496 \| good	0.155 \| good
2025-06-20T07:00:00.000Z	52 \| moderate	10.385 \| good	15.02 \| good	23.91 \| good	0.579 \| good	8.168 \| good	0.16 \| good
2025-06-20T08:00:00.000Z	49 \| good	8.655 \| good	12.989 \| good	27.778 \| good	0.604 \| good	7.921 \| good	0.161 \| good
2025-06-20T09:00:00.000Z	44 \| good	7.868 \| good	11.154 \| good	32.054 \| good	0.614 \| good	7.08 \| good	0.157 \| good
2025-06-20T10:00:00.000Z	38 \| good	7.002 \| good	9.717 \| good	35.326 \| good	0.577 \| good	5.741 \| good	0.155 \| good
2025-06-20T11:00:00.000Z	38 \| good	6.502 \| good	9.735 \| good	39.65 \| good	0.515 \| good	4.521 \| good	0.152 \| good
2025-06-20T12:00:00.000Z	41 \| good	6.725 \| good	9.47 \| good	43.807 \| good	0.463 \| good	3.614 \| good	0.148 \| good
2025-06-20T13:00:00.000Z	43 \| good	6.541 \| good	9.115 \| good	45.661 \| good	0.416 \| good	2.835 \| good	0.149 \| good
2025-06-20T14:00:00.000Z	44 \| good	6.507 \| good	8.677 \| good	47.275 \| good	0.416 \| good	2.441 \| good	0.149 \| good
2025-06-20T15:00:00.000Z	44 \| good	6.204 \| good	8.599 \| good	47.606 \| good	0.44 \| good	2.384 \| good	0.148 \| good
2025-06-20T16:00:00.000Z	44 \| good	6.178 \| good	8.939 \| good	47.776 \| good	0.427 \| good	2.856 \| good	0.147 \| good
2025-06-20T17:00:00.000Z	44 \| good	6.614 \| good	8.766 \| good	47.222 \| good	0.465 \| good	3.19 \| good	0.148 \| good
2025-06-20T18:00:00.000Z	43 \| good	6.786 \| good	8.501 \| good	46.486 \| good	0.577 \| good	3.551 \| good	0.151 \| good
2025-06-20T19:00:00.000Z	40 \| good	6.827 \| good	8.88 \| good	43.406 \| good	0.573 \| good	3.452 \| good	0.149 \| good
2025-06-20T20:00:00.000Z	44 \| good	7.626 \| good	10.007 \| good	40.517 \| good	0.601 \| good	4.701 \| good	0.149 \| good
2025-06-20T21:00:00.000Z	44 \| good	8.416 \| good	12.647 \| good	38.744 \| good	0.616 \| good	7.374 \| good	0.155 \| good
2025-06-20T22:00:00.000Z	49 \| good	9.272 \| good	13.474 \| good	34.083 \| good	0.582 \| good	7.918 \| good	0.155 \| good
2025-06-20T23:00:00.000Z	52 \| moderate	10.274 \| good	14.993 \| good	33.191 \| good	0.503 \| good	8.586 \| good	0.155 \| good
2025-06-21T00:00:00.000Z	54 \| moderate	11.227 \| good	15.664 \| good	33.449 \| good	0.418 \| good	8.191 \| good	0.159 \| good
2025-06-21T01:00:00.000Z	58 \| moderate	12.704 \| fine	17.212 \| good	31.511 \| good	0.359 \| good	8.599 \| good	0.164 \| good
2025-06-21T02:00:00.000Z	58 \| moderate	13.161 \| fine	18.418 \| good	27.592 \| good	0.346 \| good	8.142 \| good	0.17 \| good
2025-06-21T03:00:00.000Z	58 \| moderate	13.055 \| fine	17.704 \| good	22.125 \| good	0.35 \| good	8.991 \| good	0.174 \| good
2025-06-21T04:00:00.000Z	58 \| moderate	13.353 \| fine	17.16 \| good	19.914 \| good	0.407 \| good	9.105 \| good	0.174 \| good
2025-06-21T05:00:00.000Z	56 \| moderate	12.447 \| fine	17.068 \| good	23.704 \| good	0.525 \| good	8.489 \| good	0.172 \| good

Real-time 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?