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

Currently, Hertford, Hertfordshire has a sulfur dioxide (SO2) concentration of 0.456 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 36.708 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 7.484 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 3.684 μg/m3.

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

The PM10 concentration in Hertford, Hertfordshire is 10.567 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)

4.52 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

13.80 μg/m³

155

255

425

605+

Ozone (O₃)

35.81 ppb

201

201+

Sulfur Dioxide (SO₂)

0.54 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.44 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.18 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
2026-06-27T20:00:00.000Z	38 \| good	6.59 \| good	15.4 \| good	37.557 \| good	0.628 \| good	5.981 \| good	0.2 \| good
2026-06-27T21:00:00.000Z	36 \| good	5.275 \| good	15.352 \| good	39.224 \| good	0.625 \| good	7.125 \| good	0.217 \| good
2026-06-27T22:00:00.000Z	40 \| good	7.28 \| good	14.867 \| good	43.114 \| good	0.525 \| good	7.49 \| good	0.181 \| good
2026-06-27T23:00:00.000Z	34 \| good	5.277 \| good	14.517 \| good	37.305 \| good	0.527 \| good	9.862 \| good	0.17 \| good
2026-06-28T00:00:00.000Z	39 \| good	6.755 \| good	11.947 \| good	41.604 \| good	0.734 \| good	5.161 \| good	0.151 \| good
2026-06-28T01:00:00.000Z	42 \| good	4.175 \| good	13.329 \| good	45.055 \| good	0.593 \| good	9.138 \| good	0.144 \| good
2026-06-28T02:00:00.000Z	38 \| good	6.541 \| good	23.543 \| good	40.052 \| good	0.783 \| good	6.925 \| good	0.13 \| good
2026-06-28T03:00:00.000Z	35 \| good	4.851 \| good	25.364 \| good	38.021 \| good	0.87 \| good	6.897 \| good	0.127 \| good
2026-06-28T04:00:00.000Z	38 \| good	6.721 \| good	11.323 \| good	35.691 \| good	0.87 \| good	5.008 \| good	0.123 \| good
2026-06-28T05:00:00.000Z	38 \| good	6.776 \| good	10.514 \| good	30.262 \| good	0.589 \| good	4.242 \| good	0.13 \| good
2026-06-28T06:00:00.000Z	26 \| good	4.324 \| good	10.381 \| good	27.504 \| good	0.46 \| good	6.777 \| good	0.144 \| good
2026-06-28T07:00:00.000Z	28 \| good	3.701 \| good	8.76 \| good	30.41 \| good	0.597 \| good	4.362 \| good	0.146 \| good
2026-06-28T08:00:00.000Z	28 \| good	3.626 \| good	11.598 \| good	29.518 \| good	0.503 \| good	3.763 \| good	0.151 \| good
2026-06-28T09:00:00.000Z	27 \| good	4.502 \| good	11.447 \| good	28.935 \| good	0.502 \| good	4.142 \| good	0.139 \| good
2026-06-28T10:00:00.000Z	27 \| good	4.467 \| good	11.837 \| good	28.818 \| good	0.502 \| good	5.255 \| good	0.132 \| good
2026-06-28T11:00:00.000Z	33 \| good	5.566 \| good	12.414 \| good	29.05 \| good	0.408 \| good	3.879 \| good	0.13 \| good
2026-06-28T12:00:00.000Z	27 \| good	3.928 \| good	8.06 \| good	29.364 \| good	0.409 \| good	3.474 \| good	0.129 \| good
2026-06-28T13:00:00.000Z	26 \| good	3.552 \| good	13 \| good	28.142 \| good	0.543 \| good	3.76 \| good	0.13 \| good
2026-06-28T14:00:00.000Z	33 \| good	6.382 \| good	13.604 \| good	29.04 \| good	0.409 \| good	4.061 \| good	0.006 \| good
2026-06-28T15:00:00.000Z	31 \| good	3.77 \| good	11.261 \| good	33.59 \| good	0.408 \| good	5.086 \| good	0.006 \| good
2026-06-28T16:00:00.000Z	33 \| good	5.933 \| good	10.895 \| good	31.882 \| good	0.408 \| good	5.737 \| good	0.006 \| good
2026-06-28T17:00:00.000Z	29 \| good	5.261 \| good	11.3 \| good	30.588 \| good	0.453 \| good	3.682 \| good	0.006 \| good
2026-06-28T18:00:00.000Z	30 \| good	3.436 \| good	11.92 \| good	32.275 \| good	0.454 \| good	5.264 \| good	0.007 \| good
2026-06-28T19:00:00.000Z	27 \| good	5.107 \| good	10.9 \| good	27.858 \| good	0.454 \| good	4.303 \| good	0.007 \| good
2026-06-28T20:00:00.000Z	31 \| good	3.247 \| good	10.241 \| good	33.187 \| good	0.5 \| good	4.462 \| good	0.007 \| good
2026-06-28T21:00:00.000Z	30 \| good	4.154 \| good	8.488 \| good	32.063 \| good	0.499 \| good	5.236 \| good	0.008 \| good
2026-06-28T22:00:00.000Z	32 \| good	4.576 \| good	9.505 \| good	34.827 \| good	0.409 \| good	5.211 \| good	0.007 \| good
2026-06-28T23:00:00.000Z	31 \| good	4.127 \| good	9.543 \| good	34.443 \| good	0.453 \| good	4.422 \| good	0.007 \| good
2026-06-29T00:00:00.000Z	31 \| good	4.073 \| good	12.58 \| good	33.587 \| good	0.539 \| good	3.761 \| good	0.153 \| good
2026-06-29T01:00:00.000Z	31 \| good	3.938 \| good	7.788 \| good	32.939 \| good	0.434 \| good	3.911 \| good	0.148 \| good
2026-06-29T02:00:00.000Z	31 \| good	3.889 \| good	9.446 \| good	33.865 \| good	0.435 \| good	4.431 \| good	0.134 \| good
2026-06-29T03:00:00.000Z	31 \| good	4.577 \| good	8.427 \| good	33.131 \| good	0.674 \| good	4.466 \| good	0.132 \| good
2026-06-29T04:00:00.000Z	29 \| good	2.79 \| good	9.594 \| good	31.287 \| good	0.631 \| good	5.206 \| good	0.132 \| good
2026-06-29T05:00:00.000Z	28 \| good	2.926 \| good	9.156 \| good	30.048 \| good	0.547 \| good	3.811 \| good	0.136 \| good
2026-06-29T06:00:00.000Z	27 \| good	2.627 \| good	11.215 \| good	29.319 \| good	0.424 \| good	4.972 \| good	0.153 \| good
2026-06-29T07:00:00.000Z	30 \| good	2.934 \| good	7.697 \| good	32.271 \| good	0.422 \| good	6.997 \| good	0.172 \| good
2026-06-29T08:00:00.000Z	27 \| good	3.229 \| good	9.509 \| good	28.533 \| good	0.512 \| good	6.376 \| good	0.167 \| good
2026-06-29T09:00:00.000Z	22 \| good	3.52 \| good	9.548 \| good	23.283 \| good	0.432 \| good	5.807 \| good	0.153 \| good
2026-06-29T10:00:00.000Z	23 \| good	3.864 \| good	14.06 \| good	24.673 \| good	0.434 \| good	6.472 \| good	0.132 \| good
2026-06-29T11:00:00.000Z	26 \| good	3.547 \| good	13.982 \| good	28.294 \| good	0.434 \| good	6.796 \| good	0.124 \| good
2026-06-29T12:00:00.000Z	25 \| good	2.735 \| good	12.567 \| good	26.679 \| good	0.431 \| good	5.997 \| good	0.124 \| good
2026-06-29T13:00:00.000Z	28 \| good	3.442 \| good	10.34 \| good	30.399 \| good	0.43 \| good	4.516 \| good	0.122 \| good
2026-06-29T14:00:00.000Z	31 \| good	3.458 \| good	10.079 \| good	32.526 \| good	0.604 \| good	5.164 \| good	0.136 \| good
2026-06-29T15:00:00.000Z	31 \| good	3.719 \| good	10.177 \| good	32.551 \| good	0.604 \| good	5.02 \| good	0.139 \| good
2026-06-29T16:00:00.000Z	31 \| good	3.764 \| good	10.586 \| good	33.185 \| good	0.598 \| good	6.248 \| good	0.124 \| good
2026-06-29T17:00:00.000Z	32 \| good	4.843 \| good	10.486 \| good	34.923 \| good	0.428 \| good	7.951 \| good	0.173 \| good
2026-06-29T18:00:00.000Z	34 \| good	3.684 \| good	10.567 \| good	36.708 \| good	0.456 \| good	7.484 \| good	0.174 \| good
2026-06-29T19:00:00.000Z	33 \| good	4.518 \| good	13.801 \| good	35.815 \| good	0.542 \| good	5.444 \| good	0.182 \| good
2026-06-29T19:00:00.000Z	33 \| good	4.518 \| good	13.801 \| good	35.815 \| good	0.542 \| good	5.444 \| good	0.182 \| good
2026-06-29T19:00:00.000Z	37 \| good	5.115 \| good	9.257 \| good	40.091 \| good	0.126 \| good	1.751 \| good	0.093 \| good
2026-06-29T20:00:00.000Z	35 \| good	4.921 \| good	9.566 \| good	38.133 \| good	0.144 \| good	2.766 \| good	0.094 \| good
2026-06-29T21:00:00.000Z	32 \| good	4.923 \| good	9.93 \| good	35.208 \| good	0.2 \| good	3.961 \| good	0.094 \| good
2026-06-29T22:00:00.000Z	29 \| good	4.988 \| good	10.235 \| good	30.64 \| good	0.249 \| good	4.772 \| good	0.097 \| good
2026-06-29T23:00:00.000Z	27 \| good	5.068 \| good	10.348 \| good	28.62 \| good	0.241 \| good	4.866 \| good	0.096 \| good
2026-06-30T00:00:00.000Z	33 \| good	5.527 \| good	10.555 \| good	26.87 \| good	0.207 \| good	3.978 \| good	0.096 \| good
2026-06-30T01:00:00.000Z	33 \| good	6.072 \| good	11.017 \| good	25.041 \| good	0.193 \| good	3.811 \| good	0.095 \| good
2026-06-30T02:00:00.000Z	33 \| good	6.422 \| good	11.505 \| good	23.011 \| good	0.199 \| good	4.074 \| good	0.094 \| good
2026-06-30T03:00:00.000Z	38 \| good	6.671 \| good	11.954 \| good	21.804 \| good	0.211 \| good	3.99 \| good	0.094 \| good
2026-06-30T04:00:00.000Z	38 \| good	6.715 \| good	12.054 \| good	21.621 \| good	0.218 \| good	3.917 \| good	0.094 \| good
2026-06-30T05:00:00.000Z	38 \| good	6.734 \| good	12.06 \| good	21.866 \| good	0.221 \| good	3.884 \| good	0.094 \| good
2026-06-30T06:00:00.000Z	38 \| good	6.897 \| good	11.658 \| good	22.338 \| good	0.242 \| good	3.946 \| good	0.091 \| good
2026-06-30T07:00:00.000Z	38 \| good	6.8 \| good	11.481 \| good	24.022 \| good	0.275 \| good	3.843 \| good	0.093 \| good
2026-06-30T08:00:00.000Z	33 \| good	6.354 \| good	10.813 \| good	27.179 \| good	0.273 \| good	4.161 \| good	0.096 \| good
2026-06-30T09:00:00.000Z	33 \| good	5.903 \| good	9.954 \| good	29.387 \| good	0.265 \| good	4.097 \| good	0.098 \| good
2026-06-30T10:00:00.000Z	33 \| good	5.652 \| good	9.582 \| good	31.631 \| good	0.244 \| good	3.228 \| good	0.098 \| good
2026-06-30T11:00:00.000Z	33 \| good	5.435 \| good	8.648 \| good	35.851 \| good	0.212 \| good	2.414 \| good	0.096 \| good
2026-06-30T12:00:00.000Z	38 \| good	5.088 \| good	8.319 \| good	40.677 \| good	0.154 \| good	1.698 \| good	0.093 \| good
2026-06-30T13:00:00.000Z	41 \| good	4.898 \| good	8.191 \| good	43.741 \| good	0.132 \| good	1.515 \| good	0.09 \| good
2026-06-30T14:00:00.000Z	41 \| good	4.673 \| good	7.165 \| good	43.764 \| good	0.14 \| good	1.464 \| good	0.088 \| good
2026-06-30T15:00:00.000Z	40 \| good	4.542 \| good	7.147 \| good	42.925 \| good	0.14 \| good	1.478 \| good	0.086 \| good
2026-06-30T16:00:00.000Z	38 \| good	4.007 \| good	6.874 \| good	41.189 \| good	0.133 \| good	1.648 \| good	0.086 \| good
2026-06-30T17:00:00.000Z	36 \| good	3.972 \| good	6.494 \| good	39.416 \| good	0.129 \| good	2.116 \| good	0.086 \| good
2026-06-30T18:00:00.000Z	32 \| good	4.007 \| good	7.36 \| good	35.215 \| good	0.132 \| good	2.66 \| good	0.086 \| good
2026-06-30T19:00:00.000Z	30 \| good	3.92 \| good	7.161 \| good	32.459 \| good	0.13 \| good	2.792 \| good	0.086 \| good
2026-06-30T20:00:00.000Z	29 \| good	4.281 \| good	7.299 \| good	30.856 \| good	0.126 \| good	2.503 \| good	0.086 \| good
2026-06-30T21:00:00.000Z	27 \| good	4.419 \| good	7.584 \| good	29.224 \| good	0.149 \| good	2.718 \| good	0.086 \| good
2026-06-30T22:00:00.000Z	25 \| good	4.232 \| good	8.04 \| good	26.805 \| good	0.172 \| good	3.133 \| good	0.088 \| good
2026-06-30T23:00:00.000Z	23 \| good	4.068 \| good	7.888 \| good	24.952 \| good	0.187 \| good	3.346 \| good	0.091 \| good
2026-07-01T00:00:00.000Z	22 \| good	4.137 \| good	7.929 \| good	23.175 \| good	0.19 \| good	3.538 \| good	0.093 \| good
2026-07-01T01:00:00.000Z	22 \| good	4.285 \| good	7.625 \| good	20.871 \| good	0.194 \| good	3.529 \| good	0.095 \| good
2026-07-01T02:00:00.000Z	22 \| good	4.3 \| good	7.264 \| good	18.662 \| good	0.197 \| good	3.324 \| good	0.095 \| good
2026-07-01T03:00:00.000Z	22 \| good	4.166 \| good	6.866 \| good	17.195 \| good	0.173 \| good	3.143 \| good	0.094 \| good
2026-07-01T04:00:00.000Z	22 \| good	3.89 \| good	6.326 \| good	16.974 \| good	0.137 \| good	3.053 \| good	0.091 \| good
2026-07-01T05:00:00.000Z	22 \| good	3.696 \| good	5.905 \| good	17.536 \| good	0.121 \| good	2.664 \| good	0.088 \| good
2026-07-01T06:00:00.000Z	22 \| good	3.793 \| good	5.732 \| good	17.955 \| good	0.159 \| good	2.291 \| good	0.088 \| good
2026-07-01T07:00:00.000Z	22 \| good	3.724 \| good	5.874 \| good	20.848 \| good	0.158 \| good	2.44 \| good	0.09 \| good
2026-07-01T08:00:00.000Z	23 \| good	3.437 \| good	5.608 \| good	24.892 \| good	0.163 \| good	2.456 \| good	0.09 \| good
2026-07-01T09:00:00.000Z	27 \| good	3.588 \| good	5.786 \| good	28.577 \| good	0.156 \| good	2.284 \| good	0.09 \| good
2026-07-01T10:00:00.000Z	29 \| good	3.376 \| good	5.648 \| good	31.231 \| good	0.13 \| good	1.804 \| good	0.089 \| good
2026-07-01T11:00:00.000Z	31 \| good	3.034 \| good	4.928 \| good	33.601 \| good	0.118 \| good	1.44 \| good	0.089 \| good
2026-07-01T12:00:00.000Z	33 \| good	3.19 \| good	4.716 \| good	35.593 \| good	0.115 \| good	1.295 \| good	0.089 \| good
2026-07-01T13:00:00.000Z	35 \| good	3.059 \| good	4.354 \| good	38.465 \| good	0.106 \| good	1.14 \| good	0.089 \| good
2026-07-01T14:00:00.000Z	38 \| good	2.829 \| good	4.032 \| good	41.265 \| good	0.096 \| good	1.044 \| good	0.088 \| good
2026-07-01T15:00:00.000Z	39 \| good	2.764 \| good	3.96 \| good	42.266 \| good	0.091 \| good	1.081 \| good	0.088 \| good
2026-07-01T16:00:00.000Z	40 \| good	2.727 \| good	4.034 \| good	42.532 \| good	0.084 \| good	1.197 \| good	0.089 \| good
2026-07-01T17:00:00.000Z	39 \| good	2.651 \| good	4.021 \| good	41.696 \| good	0.081 \| good	1.342 \| good	0.088 \| good
2026-07-01T18:00:00.000Z	37 \| good	2.558 \| good	3.971 \| good	40.487 \| good	0.083 \| good	1.448 \| good	0.089 \| good

Hertford

Get reliable air quality data to drive your business

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

0.17ppm

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 10:00:00 on 2026-06-28.

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 09:00:00 on 2026-06-29.

What is the AQI in Hertford, Hertfordshire right now?

As of now, the AQI in Hertford, Hertfordshire is 34, indicating Good conditions.

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

Hertford, Hertfordshire air has the highest levels of O3.

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 3.684 μg/m³.

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

The PM₁₀ concentration in Hertford, Hertfordshire is 10.567 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 0.174 ppm.

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

Currently, Hertford, Hertfordshire has a sulfur dioxide (SO₂) concentration of 0.456 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 36.708 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 7.484 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-06-27T20:00:00.000Z	38 \| good	6.59 \| good	15.4 \| good	37.557 \| good	0.628 \| good	5.981 \| good	0.2 \| good
2026-06-27T21:00:00.000Z	36 \| good	5.275 \| good	15.352 \| good	39.224 \| good	0.625 \| good	7.125 \| good	0.217 \| good
2026-06-27T22:00:00.000Z	40 \| good	7.28 \| good	14.867 \| good	43.114 \| good	0.525 \| good	7.49 \| good	0.181 \| good
2026-06-27T23:00:00.000Z	34 \| good	5.277 \| good	14.517 \| good	37.305 \| good	0.527 \| good	9.862 \| good	0.17 \| good
2026-06-28T00:00:00.000Z	39 \| good	6.755 \| good	11.947 \| good	41.604 \| good	0.734 \| good	5.161 \| good	0.151 \| good
2026-06-28T01:00:00.000Z	42 \| good	4.175 \| good	13.329 \| good	45.055 \| good	0.593 \| good	9.138 \| good	0.144 \| good
2026-06-28T02:00:00.000Z	38 \| good	6.541 \| good	23.543 \| good	40.052 \| good	0.783 \| good	6.925 \| good	0.13 \| good
2026-06-28T03:00:00.000Z	35 \| good	4.851 \| good	25.364 \| good	38.021 \| good	0.87 \| good	6.897 \| good	0.127 \| good
2026-06-28T04:00:00.000Z	38 \| good	6.721 \| good	11.323 \| good	35.691 \| good	0.87 \| good	5.008 \| good	0.123 \| good
2026-06-28T05:00:00.000Z	38 \| good	6.776 \| good	10.514 \| good	30.262 \| good	0.589 \| good	4.242 \| good	0.13 \| good
2026-06-28T06:00:00.000Z	26 \| good	4.324 \| good	10.381 \| good	27.504 \| good	0.46 \| good	6.777 \| good	0.144 \| good
2026-06-28T07:00:00.000Z	28 \| good	3.701 \| good	8.76 \| good	30.41 \| good	0.597 \| good	4.362 \| good	0.146 \| good
2026-06-28T08:00:00.000Z	28 \| good	3.626 \| good	11.598 \| good	29.518 \| good	0.503 \| good	3.763 \| good	0.151 \| good
2026-06-28T09:00:00.000Z	27 \| good	4.502 \| good	11.447 \| good	28.935 \| good	0.502 \| good	4.142 \| good	0.139 \| good
2026-06-28T10:00:00.000Z	27 \| good	4.467 \| good	11.837 \| good	28.818 \| good	0.502 \| good	5.255 \| good	0.132 \| good
2026-06-28T11:00:00.000Z	33 \| good	5.566 \| good	12.414 \| good	29.05 \| good	0.408 \| good	3.879 \| good	0.13 \| good
2026-06-28T12:00:00.000Z	27 \| good	3.928 \| good	8.06 \| good	29.364 \| good	0.409 \| good	3.474 \| good	0.129 \| good
2026-06-28T13:00:00.000Z	26 \| good	3.552 \| good	13 \| good	28.142 \| good	0.543 \| good	3.76 \| good	0.13 \| good
2026-06-28T14:00:00.000Z	33 \| good	6.382 \| good	13.604 \| good	29.04 \| good	0.409 \| good	4.061 \| good	0.006 \| good
2026-06-28T15:00:00.000Z	31 \| good	3.77 \| good	11.261 \| good	33.59 \| good	0.408 \| good	5.086 \| good	0.006 \| good
2026-06-28T16:00:00.000Z	33 \| good	5.933 \| good	10.895 \| good	31.882 \| good	0.408 \| good	5.737 \| good	0.006 \| good
2026-06-28T17:00:00.000Z	29 \| good	5.261 \| good	11.3 \| good	30.588 \| good	0.453 \| good	3.682 \| good	0.006 \| good
2026-06-28T18:00:00.000Z	30 \| good	3.436 \| good	11.92 \| good	32.275 \| good	0.454 \| good	5.264 \| good	0.007 \| good
2026-06-28T19:00:00.000Z	27 \| good	5.107 \| good	10.9 \| good	27.858 \| good	0.454 \| good	4.303 \| good	0.007 \| good
2026-06-28T20:00:00.000Z	31 \| good	3.247 \| good	10.241 \| good	33.187 \| good	0.5 \| good	4.462 \| good	0.007 \| good
2026-06-28T21:00:00.000Z	30 \| good	4.154 \| good	8.488 \| good	32.063 \| good	0.499 \| good	5.236 \| good	0.008 \| good
2026-06-28T22:00:00.000Z	32 \| good	4.576 \| good	9.505 \| good	34.827 \| good	0.409 \| good	5.211 \| good	0.007 \| good
2026-06-28T23:00:00.000Z	31 \| good	4.127 \| good	9.543 \| good	34.443 \| good	0.453 \| good	4.422 \| good	0.007 \| good
2026-06-29T00:00:00.000Z	31 \| good	4.073 \| good	12.58 \| good	33.587 \| good	0.539 \| good	3.761 \| good	0.153 \| good
2026-06-29T01:00:00.000Z	31 \| good	3.938 \| good	7.788 \| good	32.939 \| good	0.434 \| good	3.911 \| good	0.148 \| good
2026-06-29T02:00:00.000Z	31 \| good	3.889 \| good	9.446 \| good	33.865 \| good	0.435 \| good	4.431 \| good	0.134 \| good
2026-06-29T03:00:00.000Z	31 \| good	4.577 \| good	8.427 \| good	33.131 \| good	0.674 \| good	4.466 \| good	0.132 \| good
2026-06-29T04:00:00.000Z	29 \| good	2.79 \| good	9.594 \| good	31.287 \| good	0.631 \| good	5.206 \| good	0.132 \| good
2026-06-29T05:00:00.000Z	28 \| good	2.926 \| good	9.156 \| good	30.048 \| good	0.547 \| good	3.811 \| good	0.136 \| good
2026-06-29T06:00:00.000Z	27 \| good	2.627 \| good	11.215 \| good	29.319 \| good	0.424 \| good	4.972 \| good	0.153 \| good
2026-06-29T07:00:00.000Z	30 \| good	2.934 \| good	7.697 \| good	32.271 \| good	0.422 \| good	6.997 \| good	0.172 \| good
2026-06-29T08:00:00.000Z	27 \| good	3.229 \| good	9.509 \| good	28.533 \| good	0.512 \| good	6.376 \| good	0.167 \| good
2026-06-29T09:00:00.000Z	22 \| good	3.52 \| good	9.548 \| good	23.283 \| good	0.432 \| good	5.807 \| good	0.153 \| good
2026-06-29T10:00:00.000Z	23 \| good	3.864 \| good	14.06 \| good	24.673 \| good	0.434 \| good	6.472 \| good	0.132 \| good
2026-06-29T11:00:00.000Z	26 \| good	3.547 \| good	13.982 \| good	28.294 \| good	0.434 \| good	6.796 \| good	0.124 \| good
2026-06-29T12:00:00.000Z	25 \| good	2.735 \| good	12.567 \| good	26.679 \| good	0.431 \| good	5.997 \| good	0.124 \| good
2026-06-29T13:00:00.000Z	28 \| good	3.442 \| good	10.34 \| good	30.399 \| good	0.43 \| good	4.516 \| good	0.122 \| good
2026-06-29T14:00:00.000Z	31 \| good	3.458 \| good	10.079 \| good	32.526 \| good	0.604 \| good	5.164 \| good	0.136 \| good
2026-06-29T15:00:00.000Z	31 \| good	3.719 \| good	10.177 \| good	32.551 \| good	0.604 \| good	5.02 \| good	0.139 \| good
2026-06-29T16:00:00.000Z	31 \| good	3.764 \| good	10.586 \| good	33.185 \| good	0.598 \| good	6.248 \| good	0.124 \| good
2026-06-29T17:00:00.000Z	32 \| good	4.843 \| good	10.486 \| good	34.923 \| good	0.428 \| good	7.951 \| good	0.173 \| good
2026-06-29T18:00:00.000Z	34 \| good	3.684 \| good	10.567 \| good	36.708 \| good	0.456 \| good	7.484 \| good	0.174 \| good
2026-06-29T19:00:00.000Z	33 \| good	4.518 \| good	13.801 \| good	35.815 \| good	0.542 \| good	5.444 \| good	0.182 \| good
2026-06-29T19:00:00.000Z	33 \| good	4.518 \| good	13.801 \| good	35.815 \| good	0.542 \| good	5.444 \| good	0.182 \| good
2026-06-29T19:00:00.000Z	37 \| good	5.115 \| good	9.257 \| good	40.091 \| good	0.126 \| good	1.751 \| good	0.093 \| good
2026-06-29T20:00:00.000Z	35 \| good	4.921 \| good	9.566 \| good	38.133 \| good	0.144 \| good	2.766 \| good	0.094 \| good
2026-06-29T21:00:00.000Z	32 \| good	4.923 \| good	9.93 \| good	35.208 \| good	0.2 \| good	3.961 \| good	0.094 \| good
2026-06-29T22:00:00.000Z	29 \| good	4.988 \| good	10.235 \| good	30.64 \| good	0.249 \| good	4.772 \| good	0.097 \| good
2026-06-29T23:00:00.000Z	27 \| good	5.068 \| good	10.348 \| good	28.62 \| good	0.241 \| good	4.866 \| good	0.096 \| good
2026-06-30T00:00:00.000Z	33 \| good	5.527 \| good	10.555 \| good	26.87 \| good	0.207 \| good	3.978 \| good	0.096 \| good
2026-06-30T01:00:00.000Z	33 \| good	6.072 \| good	11.017 \| good	25.041 \| good	0.193 \| good	3.811 \| good	0.095 \| good
2026-06-30T02:00:00.000Z	33 \| good	6.422 \| good	11.505 \| good	23.011 \| good	0.199 \| good	4.074 \| good	0.094 \| good
2026-06-30T03:00:00.000Z	38 \| good	6.671 \| good	11.954 \| good	21.804 \| good	0.211 \| good	3.99 \| good	0.094 \| good
2026-06-30T04:00:00.000Z	38 \| good	6.715 \| good	12.054 \| good	21.621 \| good	0.218 \| good	3.917 \| good	0.094 \| good
2026-06-30T05:00:00.000Z	38 \| good	6.734 \| good	12.06 \| good	21.866 \| good	0.221 \| good	3.884 \| good	0.094 \| good
2026-06-30T06:00:00.000Z	38 \| good	6.897 \| good	11.658 \| good	22.338 \| good	0.242 \| good	3.946 \| good	0.091 \| good
2026-06-30T07:00:00.000Z	38 \| good	6.8 \| good	11.481 \| good	24.022 \| good	0.275 \| good	3.843 \| good	0.093 \| good
2026-06-30T08:00:00.000Z	33 \| good	6.354 \| good	10.813 \| good	27.179 \| good	0.273 \| good	4.161 \| good	0.096 \| good
2026-06-30T09:00:00.000Z	33 \| good	5.903 \| good	9.954 \| good	29.387 \| good	0.265 \| good	4.097 \| good	0.098 \| good
2026-06-30T10:00:00.000Z	33 \| good	5.652 \| good	9.582 \| good	31.631 \| good	0.244 \| good	3.228 \| good	0.098 \| good
2026-06-30T11:00:00.000Z	33 \| good	5.435 \| good	8.648 \| good	35.851 \| good	0.212 \| good	2.414 \| good	0.096 \| good
2026-06-30T12:00:00.000Z	38 \| good	5.088 \| good	8.319 \| good	40.677 \| good	0.154 \| good	1.698 \| good	0.093 \| good
2026-06-30T13:00:00.000Z	41 \| good	4.898 \| good	8.191 \| good	43.741 \| good	0.132 \| good	1.515 \| good	0.09 \| good
2026-06-30T14:00:00.000Z	41 \| good	4.673 \| good	7.165 \| good	43.764 \| good	0.14 \| good	1.464 \| good	0.088 \| good
2026-06-30T15:00:00.000Z	40 \| good	4.542 \| good	7.147 \| good	42.925 \| good	0.14 \| good	1.478 \| good	0.086 \| good
2026-06-30T16:00:00.000Z	38 \| good	4.007 \| good	6.874 \| good	41.189 \| good	0.133 \| good	1.648 \| good	0.086 \| good
2026-06-30T17:00:00.000Z	36 \| good	3.972 \| good	6.494 \| good	39.416 \| good	0.129 \| good	2.116 \| good	0.086 \| good
2026-06-30T18:00:00.000Z	32 \| good	4.007 \| good	7.36 \| good	35.215 \| good	0.132 \| good	2.66 \| good	0.086 \| good
2026-06-30T19:00:00.000Z	30 \| good	3.92 \| good	7.161 \| good	32.459 \| good	0.13 \| good	2.792 \| good	0.086 \| good
2026-06-30T20:00:00.000Z	29 \| good	4.281 \| good	7.299 \| good	30.856 \| good	0.126 \| good	2.503 \| good	0.086 \| good
2026-06-30T21:00:00.000Z	27 \| good	4.419 \| good	7.584 \| good	29.224 \| good	0.149 \| good	2.718 \| good	0.086 \| good
2026-06-30T22:00:00.000Z	25 \| good	4.232 \| good	8.04 \| good	26.805 \| good	0.172 \| good	3.133 \| good	0.088 \| good
2026-06-30T23:00:00.000Z	23 \| good	4.068 \| good	7.888 \| good	24.952 \| good	0.187 \| good	3.346 \| good	0.091 \| good
2026-07-01T00:00:00.000Z	22 \| good	4.137 \| good	7.929 \| good	23.175 \| good	0.19 \| good	3.538 \| good	0.093 \| good
2026-07-01T01:00:00.000Z	22 \| good	4.285 \| good	7.625 \| good	20.871 \| good	0.194 \| good	3.529 \| good	0.095 \| good
2026-07-01T02:00:00.000Z	22 \| good	4.3 \| good	7.264 \| good	18.662 \| good	0.197 \| good	3.324 \| good	0.095 \| good
2026-07-01T03:00:00.000Z	22 \| good	4.166 \| good	6.866 \| good	17.195 \| good	0.173 \| good	3.143 \| good	0.094 \| good
2026-07-01T04:00:00.000Z	22 \| good	3.89 \| good	6.326 \| good	16.974 \| good	0.137 \| good	3.053 \| good	0.091 \| good
2026-07-01T05:00:00.000Z	22 \| good	3.696 \| good	5.905 \| good	17.536 \| good	0.121 \| good	2.664 \| good	0.088 \| good
2026-07-01T06:00:00.000Z	22 \| good	3.793 \| good	5.732 \| good	17.955 \| good	0.159 \| good	2.291 \| good	0.088 \| good
2026-07-01T07:00:00.000Z	22 \| good	3.724 \| good	5.874 \| good	20.848 \| good	0.158 \| good	2.44 \| good	0.09 \| good
2026-07-01T08:00:00.000Z	23 \| good	3.437 \| good	5.608 \| good	24.892 \| good	0.163 \| good	2.456 \| good	0.09 \| good
2026-07-01T09:00:00.000Z	27 \| good	3.588 \| good	5.786 \| good	28.577 \| good	0.156 \| good	2.284 \| good	0.09 \| good
2026-07-01T10:00:00.000Z	29 \| good	3.376 \| good	5.648 \| good	31.231 \| good	0.13 \| good	1.804 \| good	0.089 \| good
2026-07-01T11:00:00.000Z	31 \| good	3.034 \| good	4.928 \| good	33.601 \| good	0.118 \| good	1.44 \| good	0.089 \| good
2026-07-01T12:00:00.000Z	33 \| good	3.19 \| good	4.716 \| good	35.593 \| good	0.115 \| good	1.295 \| good	0.089 \| good
2026-07-01T13:00:00.000Z	35 \| good	3.059 \| good	4.354 \| good	38.465 \| good	0.106 \| good	1.14 \| good	0.089 \| good
2026-07-01T14:00:00.000Z	38 \| good	2.829 \| good	4.032 \| good	41.265 \| good	0.096 \| good	1.044 \| good	0.088 \| good
2026-07-01T15:00:00.000Z	39 \| good	2.764 \| good	3.96 \| good	42.266 \| good	0.091 \| good	1.081 \| good	0.088 \| good
2026-07-01T16:00:00.000Z	40 \| good	2.727 \| good	4.034 \| good	42.532 \| good	0.084 \| good	1.197 \| good	0.089 \| good
2026-07-01T17:00:00.000Z	39 \| good	2.651 \| good	4.021 \| good	41.696 \| good	0.081 \| good	1.342 \| good	0.088 \| good
2026-07-01T18:00:00.000Z	37 \| good	2.558 \| good	3.971 \| good	40.487 \| good	0.083 \| good	1.448 \| good	0.089 \| 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

How accurate is Hertfordshire, UK air quality data?

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?