What is the current level of PM10 in Waltham Cross, Hertfordshire?

Waltham Cross, Hertfordshire currently has a PM10 concentration of 26.459 μg/m3.

What is the current level of sulfur dioxide (SO2) in Waltham Cross, Hertfordshire?

The current sulfur dioxide (SO2) concentration in Waltham Cross, Hertfordshire is 0.835 ppb.

What is the current level of ozone (O3) in Waltham Cross, Hertfordshire?

Waltham Cross, Hertfordshire currently has an ozone (O3) concentration of 29.963 ppm.

What is the current level of nitrogen dioxide (NO2) in Waltham Cross, Hertfordshire?

The current level of nitrogen dioxide (NO2) in Waltham Cross, Hertfordshire is 2.716 ppb.

Current air quality index in Waltham Cross, Hertfordshire today

Q: What is the PM2.5 concentration in Waltham Cross, Hertfordshire right now?

Waltham Cross, Hertfordshire currently has a PM2.5 concentration of 6.322 μg/m3.

Stay updated with real-time air quality in Waltham Cross, 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

Waltham Cross, Hertfordshire

Last updated: ... (Local time)

Common air pollutants in Waltham Cross, Hertfordshire

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

6.32 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

26.46 μg/m³

155

255

425

605+

Ozone (O₃)

29.96 ppb

201

201+

Sulfur Dioxide (SO₂)

0.83 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

2.72 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.02 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

Waltham Cross, Hertfordshire

Get Live Pollen Counts

Waltham Cross, Hertfordshire

Scroll To Air Quality Map

Track live Waltham Cross, Hertfordshire air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-14T10:00:00.000Z	38 \| good	6.747 \| good	14.21 \| good	18.148 \| good	0.931 \| good	9.953 \| good	0.311 \| good
2026-03-14T11:00:00.000Z	33 \| good	6.456 \| good	15.747 \| good	18.482 \| good	1.063 \| good	6.441 \| good	0.297 \| good
2026-03-14T12:00:00.000Z	33 \| good	6.115 \| good	10.37 \| good	20.957 \| good	0.918 \| good	5.053 \| good	0.197 \| good
2026-03-14T13:00:00.000Z	33 \| good	6.266 \| good	12.106 \| good	23.642 \| good	1.091 \| good	4.886 \| good	0.179 \| good
2026-03-14T14:00:00.000Z	33 \| good	6.085 \| good	16.954 \| good	25.661 \| good	0.894 \| good	5.42 \| good	0.181 \| good
2026-03-14T15:00:00.000Z	44 \| good	7.87 \| good	21 \| good	25.217 \| good	0.876 \| good	11.487 \| good	0.008 \| good
2026-03-14T16:00:00.000Z	28 \| good	4.876 \| good	18.128 \| good	30.18 \| good	0.86 \| good	11.487 \| good	0.008 \| good
2026-03-14T17:00:00.000Z	33 \| good	6.119 \| good	15.737 \| good	31.613 \| good	0.859 \| good	11.465 \| good	0.01 \| good
2026-03-14T18:00:00.000Z	28 \| good	4.562 \| good	8.582 \| good	30.136 \| good	0.757 \| good	11.532 \| good	0.011 \| good
2026-03-14T19:00:00.000Z	31 \| good	5.02 \| good	9.952 \| good	33.188 \| good	0.729 \| good	11.622 \| good	0.018 \| good
2026-03-14T20:00:00.000Z	31 \| good	4.936 \| good	11.552 \| good	33.864 \| good	0.849 \| good	11.757 \| good	0.024 \| good
2026-03-14T21:00:00.000Z	44 \| good	7.852 \| good	10.533 \| good	28.98 \| good	0.722 \| good	12.094 \| good	0.025 \| good
2026-03-14T22:00:00.000Z	38 \| good	6.756 \| good	11.93 \| good	24.823 \| good	0.776 \| good	12.611 \| good	0.034 \| good
2026-03-14T23:00:00.000Z	27 \| good	5.087 \| good	12.075 \| good	18.364 \| good	0.974 \| good	12.858 \| good	0.031 \| good
2026-03-15T00:00:00.000Z	52 \| moderate	10.089 \| good	33.675 \| good	21.072 \| good	1.349 \| good	23.387 \| good	0.664 \| good
2026-03-15T01:00:00.000Z	52 \| moderate	10.254 \| good	32.251 \| good	18.42 \| good	1.323 \| good	23.341 \| good	0.557 \| good
2026-03-15T02:00:00.000Z	79 \| moderate	23.542 \| fine	45.346 \| good	10.827 \| good	1.595 \| good	23.318 \| good	0.451 \| good
2026-03-15T03:00:00.000Z	58 \| moderate	13.133 \| fine	56.367 \| fine	9.841 \| good	1.317 \| good	23.296 \| good	0.433 \| good
2026-03-15T04:00:00.000Z	75 \| moderate	21.703 \| fine	24.999 \| good	6.883 \| good	0.992 \| good	23.273 \| good	0.41 \| good
2026-03-15T05:00:00.000Z	56 \| moderate	12.047 \| good	43.91 \| good	8.812 \| good	0.863 \| good	23.136 \| good	0.323 \| good
2026-03-15T06:00:00.000Z	44 \| good	8.37 \| good	15.678 \| good	9.324 \| good	0.916 \| good	14.599 \| good	0.335 \| good
2026-03-15T07:00:00.000Z	49 \| good	8.588 \| good	16.69 \| good	9.122 \| good	0.934 \| good	12.98 \| good	0.405 \| good
2026-03-15T08:00:00.000Z	49 \| good	9.353 \| good	48.299 \| good	4.299 \| good	0.838 \| good	23.357 \| good	0.018 \| good
2026-03-15T09:00:00.000Z	69 \| moderate	19.041 \| fine	44.659 \| good	11.468 \| good	0.803 \| good	23.312 \| good	0.016 \| good
2026-03-15T10:00:00.000Z	64 \| moderate	15.535 \| fine	27.19 \| good	10.84 \| good	1.261 \| good	23.177 \| good	0.012 \| good
2026-03-15T11:00:00.000Z	64 \| moderate	15.718 \| fine	27.237 \| good	11.553 \| good	1.128 \| good	23.065 \| good	0.009 \| good
2026-03-15T12:00:00.000Z	67 \| moderate	17.569 \| fine	61.67 \| fine	5.62 \| good	0.793 \| good	22.975 \| good	0.008 \| good
2026-03-15T13:00:00.000Z	67 \| moderate	18.408 \| fine	61.725 \| fine	15.446 \| good	0.792 \| good	22.953 \| good	0.008 \| good
2026-03-15T14:00:00.000Z	64 \| moderate	15.718 \| fine	21.252 \| good	10.543 \| good	0.881 \| good	22.975 \| good	0.009 \| good
2026-03-15T15:00:00.000Z	64 \| moderate	15.535 \| fine	49.538 \| good	12.557 \| good	1.02 \| good	22.975 \| good	0.008 \| good
2026-03-15T16:00:00.000Z	64 \| moderate	16.255 \| fine	24.514 \| good	16.199 \| good	0.881 \| good	22.998 \| good	0.009 \| good
2026-03-15T17:00:00.000Z	64 \| moderate	15.535 \| fine	62.178 \| fine	19.678 \| good	0.97 \| good	23.043 \| good	0.01 \| good
2026-03-15T18:00:00.000Z	54 \| moderate	11.251 \| good	58.076 \| fine	15.912 \| good	0.883 \| good	23.043 \| good	0.012 \| good
2026-03-15T19:00:00.000Z	56 \| moderate	11.934 \| good	32.266 \| good	23.012 \| good	0.859 \| good	23.065 \| good	0.014 \| good
2026-03-15T20:00:00.000Z	66 \| moderate	17.439 \| fine	48.518 \| good	9.202 \| good	0.96 \| good	23.065 \| good	0.02 \| good
2026-03-15T21:00:00.000Z	64 \| moderate	15.776 \| fine	63.276 \| fine	15.129 \| good	0.747 \| good	23.087 \| good	0.024 \| good
2026-03-15T22:00:00.000Z	73 \| moderate	21.09 \| fine	41.229 \| good	30.157 \| good	0.802 \| good	23.11 \| good	0.024 \| good
2026-03-15T23:00:00.000Z	62 \| moderate	14.97 \| fine	43.025 \| good	24.973 \| good	0.931 \| good	23.177 \| good	0.035 \| good
2026-03-16T00:00:00.000Z	32 \| good	4.558 \| good	22.965 \| good	34.694 \| good	0.846 \| good	2.438 \| good	0.83 \| good
2026-03-16T01:00:00.000Z	38 \| good	6.794 \| good	23.434 \| good	33.338 \| good	0.746 \| good	2.464 \| good	0.622 \| good
2026-03-16T02:00:00.000Z	33 \| good	6.337 \| good	15.004 \| good	33.072 \| good	0.629 \| good	2.418 \| good	0.569 \| good
2026-03-16T03:00:00.000Z	38 \| good	6.845 \| good	19.389 \| good	31.843 \| good	0.731 \| good	2.395 \| good	0.415 \| good
2026-03-16T04:00:00.000Z	31 \| good	4.95 \| good	19.201 \| good	32.972 \| good	0.752 \| good	2.327 \| good	0.442 \| good
2026-03-16T05:00:00.000Z	38 \| good	6.725 \| good	18.575 \| good	27.018 \| good	0.65 \| good	2.395 \| good	0.438 \| good
2026-03-16T06:00:00.000Z	38 \| good	6.701 \| good	14.228 \| good	30.498 \| good	0.733 \| good	2.492 \| good	0.017 \| good
2026-03-16T07:00:00.000Z	33 \| good	6.12 \| good	11.366 \| good	29.858 \| good	0.886 \| good	6.669 \| good	0.5 \| good
2026-03-16T08:00:00.000Z	33 \| good	6.322 \| good	26.459 \| good	29.963 \| good	0.835 \| good	2.716 \| good	0.022 \| good
2026-03-16T09:00:00.000Z	33 \| good	6.322 \| good	26.459 \| good	29.963 \| good	0.835 \| good	2.716 \| good	0.022 \| good
2026-03-16T10:00:00.000Z	36 \| good	4.774 \| good	11.403 \| good	39.35 \| good	0.364 \| good	4.769 \| good	0.137 \| good
2026-03-16T11:00:00.000Z	39 \| good	4.78 \| good	10.691 \| good	42.198 \| good	0.308 \| good	4.1 \| good	0.135 \| good
2026-03-16T12:00:00.000Z	40 \| good	4.778 \| good	10.117 \| good	43.466 \| good	0.278 \| good	3.618 \| good	0.133 \| good
2026-03-16T13:00:00.000Z	41 \| good	4.502 \| good	10.056 \| good	44.121 \| good	0.251 \| good	3.668 \| good	0.133 \| good
2026-03-16T14:00:00.000Z	40 \| good	4.782 \| good	10.234 \| good	43.16 \| good	0.236 \| good	3.841 \| good	0.133 \| good
2026-03-16T15:00:00.000Z	39 \| good	5.326 \| good	11.89 \| good	42.407 \| good	0.24 \| good	4.298 \| good	0.135 \| good
2026-03-16T16:00:00.000Z	38 \| good	5.888 \| good	12.719 \| good	40.886 \| good	0.291 \| good	5.422 \| good	0.14 \| good
2026-03-16T17:00:00.000Z	35 \| good	6.49 \| good	13.451 \| good	38.494 \| good	0.357 \| good	7.568 \| good	0.15 \| good
2026-03-16T18:00:00.000Z	38 \| good	7.203 \| good	14.056 \| good	35.775 \| good	0.484 \| good	10.805 \| good	0.162 \| good
2026-03-16T19:00:00.000Z	44 \| good	7.569 \| good	13.932 \| good	33.669 \| good	0.549 \| good	12.794 \| good	0.166 \| good
2026-03-16T20:00:00.000Z	44 \| good	7.852 \| good	13.292 \| good	33.151 \| good	0.568 \| good	12.486 \| good	0.149 \| good
2026-03-16T21:00:00.000Z	44 \| good	8.141 \| good	14.109 \| good	33.767 \| good	0.551 \| good	11.153 \| good	0.142 \| good
2026-03-16T22:00:00.000Z	44 \| good	7.859 \| good	15.575 \| good	35.491 \| good	0.521 \| good	9.602 \| good	0.137 \| good
2026-03-16T23:00:00.000Z	38 \| good	7.344 \| good	16.977 \| good	37.173 \| good	0.466 \| good	8.638 \| good	0.133 \| good
2026-03-17T00:00:00.000Z	38 \| good	7.06 \| good	16.792 \| good	37.927 \| good	0.393 \| good	7.081 \| good	0.132 \| good
2026-03-17T01:00:00.000Z	38 \| good	6.949 \| good	15.895 \| good	38.805 \| good	0.333 \| good	5.43 \| good	0.128 \| good
2026-03-17T02:00:00.000Z	38 \| good	6.669 \| good	15.461 \| good	38.859 \| good	0.278 \| good	4.343 \| good	0.122 \| good
2026-03-17T03:00:00.000Z	36 \| good	6.301 \| good	14.808 \| good	39.077 \| good	0.267 \| good	3.467 \| good	0.119 \| good
2026-03-17T04:00:00.000Z	36 \| good	6.108 \| good	14.176 \| good	38.851 \| good	0.288 \| good	3.228 \| good	0.116 \| good
2026-03-17T05:00:00.000Z	35 \| good	5.934 \| good	13.679 \| good	38.044 \| good	0.329 \| good	3.418 \| good	0.116 \| good
2026-03-17T06:00:00.000Z	34 \| good	6.005 \| good	13.382 \| good	37.363 \| good	0.383 \| good	4.261 \| good	0.117 \| good
2026-03-17T07:00:00.000Z	34 \| good	6.4 \| good	12.939 \| good	36.562 \| good	0.491 \| good	5.853 \| good	0.125 \| good
2026-03-17T08:00:00.000Z	38 \| good	6.714 \| good	12.256 \| good	35.816 \| good	0.552 \| good	8.562 \| good	0.133 \| good
2026-03-17T09:00:00.000Z	38 \| good	6.73 \| good	11.375 \| good	36.99 \| good	0.521 \| good	9.224 \| good	0.132 \| good
2026-03-17T10:00:00.000Z	38 \| good	6.534 \| good	10.717 \| good	38.284 \| good	0.511 \| good	7.718 \| good	0.131 \| good
2026-03-17T11:00:00.000Z	37 \| good	6.289 \| good	10.009 \| good	40.494 \| good	0.426 \| good	5.751 \| good	0.126 \| good
2026-03-17T12:00:00.000Z	40 \| good	6.137 \| good	9.877 \| good	43.35 \| good	0.406 \| good	4.463 \| good	0.124 \| good
2026-03-17T13:00:00.000Z	41 \| good	6.044 \| good	9.648 \| good	44.398 \| good	0.363 \| good	3.984 \| good	0.124 \| good
2026-03-17T14:00:00.000Z	42 \| good	6.082 \| good	10.242 \| good	45.475 \| good	0.35 \| good	3.978 \| good	0.124 \| good
2026-03-17T15:00:00.000Z	44 \| good	6.103 \| good	11.425 \| good	46.86 \| good	0.358 \| good	4.254 \| good	0.125 \| good
2026-03-17T16:00:00.000Z	44 \| good	6.389 \| good	12.194 \| good	46.981 \| good	0.366 \| good	5.374 \| good	0.127 \| good
2026-03-17T17:00:00.000Z	41 \| good	6.959 \| good	12.661 \| good	43.691 \| good	0.411 \| good	6.97 \| good	0.135 \| good
2026-03-17T18:00:00.000Z	49 \| good	8.559 \| good	14.169 \| good	37.696 \| good	0.549 \| good	11.01 \| good	0.15 \| good
2026-03-17T19:00:00.000Z	52 \| moderate	9.949 \| good	15.943 \| good	31.188 \| good	0.781 \| good	16.258 \| good	0.171 \| good
2026-03-17T20:00:00.000Z	56 \| moderate	11.543 \| good	18.456 \| good	27.295 \| good	0.953 \| good	19.216 \| good	0.171 \| good
2026-03-17T21:00:00.000Z	58 \| moderate	13.096 \| fine	20.101 \| good	22.58 \| good	1.08 \| good	21.209 \| good	0.173 \| good
2026-03-17T22:00:00.000Z	62 \| moderate	14.866 \| fine	20.919 \| good	16.568 \| good	1.329 \| good	24.516 \| good	0.184 \| good
2026-03-17T23:00:00.000Z	64 \| moderate	16.262 \| fine	21.5 \| good	11.89 \| good	1.385 \| good	25.978 \| good	0.185 \| good
2026-03-18T00:00:00.000Z	66 \| moderate	16.623 \| fine	22.001 \| good	10.295 \| good	1.328 \| good	27.794 \| good	0.182 \| good
2026-03-18T01:00:00.000Z	64 \| moderate	16.487 \| fine	21.523 \| good	9.686 \| good	1.182 \| good	23.007 \| good	0.175 \| good
2026-03-18T02:00:00.000Z	64 \| moderate	15.688 \| fine	20.819 \| good	8.499 \| good	1.112 \| good	24.537 \| good	0.163 \| good
2026-03-18T03:00:00.000Z	64 \| moderate	15.862 \| fine	20.704 \| good	9.531 \| good	1.084 \| good	20.392 \| good	0.156 \| good
2026-03-18T04:00:00.000Z	62 \| moderate	15.068 \| fine	19.484 \| good	9.534 \| good	0.978 \| good	18.181 \| good	0.156 \| good
2026-03-18T05:00:00.000Z	62 \| moderate	14.663 \| fine	18.515 \| good	8.003 \| good	1.073 \| good	16.42 \| good	0.161 \| good
2026-03-18T06:00:00.000Z	62 \| moderate	14.725 \| fine	18.292 \| good	5.745 \| good	1.2 \| good	17.724 \| good	0.173 \| good
2026-03-18T07:00:00.000Z	62 \| moderate	15.131 \| fine	19.339 \| good	5.696 \| good	1.336 \| good	18.35 \| good	0.185 \| good
2026-03-18T08:00:00.000Z	62 \| moderate	15.13 \| fine	20.758 \| good	10.181 \| good	1.356 \| good	15.473 \| good	0.202 \| good
2026-03-18T09:00:00.000Z	62 \| moderate	14.535 \| fine	19.254 \| good	12.417 \| good	1.414 \| good	13.687 \| good	0.204 \| good

Waltham Cross

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Waltham Cross, Hertfordshire

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How accurate is Hertfordshire, UK air quality data?

The air quality data for Hertfordshire, UK is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.

Source: Ambee Data Sources

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Frequently asked questions

How frequently does the air quality data for Waltham Cross, Hertfordshire get updated?

Air quality updates for Waltham Cross, Hertfordshire are available every hour.

What time in the past 24 hours saw the poorest air quality in Waltham Cross, Hertfordshire?

Waltham Cross, Hertfordshire experienced its worst air quality at 10:00:00, 2026-03-15.

When was air quality in Waltham Cross, Hertfordshire the best over the past 24 hours?

The best air quality in Waltham Cross, Hertfordshire was observed at 04:00:00 on 2026-03-16.

What is the air quality in Waltham Cross, Hertfordshire right now?

The air quality in Waltham Cross, Hertfordshire right now is Good, with an AQI of 33.

What pollutant is most frequently found in Waltham Cross, Hertfordshire?

In Waltham Cross, Hertfordshire, PM2.5 is the most frequently found pollutant.

What can I do if the air quality in Waltham Cross, Hertfordshire is poor?

When air quality in Waltham Cross, Hertfordshire is compromised, staying indoors and wearing a mask can reduce health risks.

What is the PM_2.5 concentration in Waltham Cross, Hertfordshire right now?

Waltham Cross, Hertfordshire currently has a PM_2.5 concentration of 6.322 μg/m³.

What is the current level of PM₁₀ in Waltham Cross, Hertfordshire?

Waltham Cross, Hertfordshire currently has a PM₁₀ concentration of 26.459 μg/m³.

What is the current level of carbon monoxide (CO) in Waltham Cross, Hertfordshire?

The current carbon monoxide (CO) level in Waltham Cross, Hertfordshire is 0.022 ppm.

What is the current level of sulfur dioxide (SO₂) in Waltham Cross, Hertfordshire?

The current sulfur dioxide (SO₂) concentration in Waltham Cross, Hertfordshire is 0.835 ppb.

What is the current level of ozone (O₃) in Waltham Cross, Hertfordshire?

Waltham Cross, Hertfordshire currently has an ozone (O₃) concentration of 29.963 ppm.

What is the current level of nitrogen dioxide (NO₂) in Waltham Cross, Hertfordshire?

The current level of nitrogen dioxide (NO₂) in Waltham Cross, Hertfordshire is 2.716 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-14T10:00:00.000Z	38 \| good	6.747 \| good	14.21 \| good	18.148 \| good	0.931 \| good	9.953 \| good	0.311 \| good
2026-03-14T11:00:00.000Z	33 \| good	6.456 \| good	15.747 \| good	18.482 \| good	1.063 \| good	6.441 \| good	0.297 \| good
2026-03-14T12:00:00.000Z	33 \| good	6.115 \| good	10.37 \| good	20.957 \| good	0.918 \| good	5.053 \| good	0.197 \| good
2026-03-14T13:00:00.000Z	33 \| good	6.266 \| good	12.106 \| good	23.642 \| good	1.091 \| good	4.886 \| good	0.179 \| good
2026-03-14T14:00:00.000Z	33 \| good	6.085 \| good	16.954 \| good	25.661 \| good	0.894 \| good	5.42 \| good	0.181 \| good
2026-03-14T15:00:00.000Z	44 \| good	7.87 \| good	21 \| good	25.217 \| good	0.876 \| good	11.487 \| good	0.008 \| good
2026-03-14T16:00:00.000Z	28 \| good	4.876 \| good	18.128 \| good	30.18 \| good	0.86 \| good	11.487 \| good	0.008 \| good
2026-03-14T17:00:00.000Z	33 \| good	6.119 \| good	15.737 \| good	31.613 \| good	0.859 \| good	11.465 \| good	0.01 \| good
2026-03-14T18:00:00.000Z	28 \| good	4.562 \| good	8.582 \| good	30.136 \| good	0.757 \| good	11.532 \| good	0.011 \| good
2026-03-14T19:00:00.000Z	31 \| good	5.02 \| good	9.952 \| good	33.188 \| good	0.729 \| good	11.622 \| good	0.018 \| good
2026-03-14T20:00:00.000Z	31 \| good	4.936 \| good	11.552 \| good	33.864 \| good	0.849 \| good	11.757 \| good	0.024 \| good
2026-03-14T21:00:00.000Z	44 \| good	7.852 \| good	10.533 \| good	28.98 \| good	0.722 \| good	12.094 \| good	0.025 \| good
2026-03-14T22:00:00.000Z	38 \| good	6.756 \| good	11.93 \| good	24.823 \| good	0.776 \| good	12.611 \| good	0.034 \| good
2026-03-14T23:00:00.000Z	27 \| good	5.087 \| good	12.075 \| good	18.364 \| good	0.974 \| good	12.858 \| good	0.031 \| good
2026-03-15T00:00:00.000Z	52 \| moderate	10.089 \| good	33.675 \| good	21.072 \| good	1.349 \| good	23.387 \| good	0.664 \| good
2026-03-15T01:00:00.000Z	52 \| moderate	10.254 \| good	32.251 \| good	18.42 \| good	1.323 \| good	23.341 \| good	0.557 \| good
2026-03-15T02:00:00.000Z	79 \| moderate	23.542 \| fine	45.346 \| good	10.827 \| good	1.595 \| good	23.318 \| good	0.451 \| good
2026-03-15T03:00:00.000Z	58 \| moderate	13.133 \| fine	56.367 \| fine	9.841 \| good	1.317 \| good	23.296 \| good	0.433 \| good
2026-03-15T04:00:00.000Z	75 \| moderate	21.703 \| fine	24.999 \| good	6.883 \| good	0.992 \| good	23.273 \| good	0.41 \| good
2026-03-15T05:00:00.000Z	56 \| moderate	12.047 \| good	43.91 \| good	8.812 \| good	0.863 \| good	23.136 \| good	0.323 \| good
2026-03-15T06:00:00.000Z	44 \| good	8.37 \| good	15.678 \| good	9.324 \| good	0.916 \| good	14.599 \| good	0.335 \| good
2026-03-15T07:00:00.000Z	49 \| good	8.588 \| good	16.69 \| good	9.122 \| good	0.934 \| good	12.98 \| good	0.405 \| good
2026-03-15T08:00:00.000Z	49 \| good	9.353 \| good	48.299 \| good	4.299 \| good	0.838 \| good	23.357 \| good	0.018 \| good
2026-03-15T09:00:00.000Z	69 \| moderate	19.041 \| fine	44.659 \| good	11.468 \| good	0.803 \| good	23.312 \| good	0.016 \| good
2026-03-15T10:00:00.000Z	64 \| moderate	15.535 \| fine	27.19 \| good	10.84 \| good	1.261 \| good	23.177 \| good	0.012 \| good
2026-03-15T11:00:00.000Z	64 \| moderate	15.718 \| fine	27.237 \| good	11.553 \| good	1.128 \| good	23.065 \| good	0.009 \| good
2026-03-15T12:00:00.000Z	67 \| moderate	17.569 \| fine	61.67 \| fine	5.62 \| good	0.793 \| good	22.975 \| good	0.008 \| good
2026-03-15T13:00:00.000Z	67 \| moderate	18.408 \| fine	61.725 \| fine	15.446 \| good	0.792 \| good	22.953 \| good	0.008 \| good
2026-03-15T14:00:00.000Z	64 \| moderate	15.718 \| fine	21.252 \| good	10.543 \| good	0.881 \| good	22.975 \| good	0.009 \| good
2026-03-15T15:00:00.000Z	64 \| moderate	15.535 \| fine	49.538 \| good	12.557 \| good	1.02 \| good	22.975 \| good	0.008 \| good
2026-03-15T16:00:00.000Z	64 \| moderate	16.255 \| fine	24.514 \| good	16.199 \| good	0.881 \| good	22.998 \| good	0.009 \| good
2026-03-15T17:00:00.000Z	64 \| moderate	15.535 \| fine	62.178 \| fine	19.678 \| good	0.97 \| good	23.043 \| good	0.01 \| good
2026-03-15T18:00:00.000Z	54 \| moderate	11.251 \| good	58.076 \| fine	15.912 \| good	0.883 \| good	23.043 \| good	0.012 \| good
2026-03-15T19:00:00.000Z	56 \| moderate	11.934 \| good	32.266 \| good	23.012 \| good	0.859 \| good	23.065 \| good	0.014 \| good
2026-03-15T20:00:00.000Z	66 \| moderate	17.439 \| fine	48.518 \| good	9.202 \| good	0.96 \| good	23.065 \| good	0.02 \| good
2026-03-15T21:00:00.000Z	64 \| moderate	15.776 \| fine	63.276 \| fine	15.129 \| good	0.747 \| good	23.087 \| good	0.024 \| good
2026-03-15T22:00:00.000Z	73 \| moderate	21.09 \| fine	41.229 \| good	30.157 \| good	0.802 \| good	23.11 \| good	0.024 \| good
2026-03-15T23:00:00.000Z	62 \| moderate	14.97 \| fine	43.025 \| good	24.973 \| good	0.931 \| good	23.177 \| good	0.035 \| good
2026-03-16T00:00:00.000Z	32 \| good	4.558 \| good	22.965 \| good	34.694 \| good	0.846 \| good	2.438 \| good	0.83 \| good
2026-03-16T01:00:00.000Z	38 \| good	6.794 \| good	23.434 \| good	33.338 \| good	0.746 \| good	2.464 \| good	0.622 \| good
2026-03-16T02:00:00.000Z	33 \| good	6.337 \| good	15.004 \| good	33.072 \| good	0.629 \| good	2.418 \| good	0.569 \| good
2026-03-16T03:00:00.000Z	38 \| good	6.845 \| good	19.389 \| good	31.843 \| good	0.731 \| good	2.395 \| good	0.415 \| good
2026-03-16T04:00:00.000Z	31 \| good	4.95 \| good	19.201 \| good	32.972 \| good	0.752 \| good	2.327 \| good	0.442 \| good
2026-03-16T05:00:00.000Z	38 \| good	6.725 \| good	18.575 \| good	27.018 \| good	0.65 \| good	2.395 \| good	0.438 \| good
2026-03-16T06:00:00.000Z	38 \| good	6.701 \| good	14.228 \| good	30.498 \| good	0.733 \| good	2.492 \| good	0.017 \| good
2026-03-16T07:00:00.000Z	33 \| good	6.12 \| good	11.366 \| good	29.858 \| good	0.886 \| good	6.669 \| good	0.5 \| good
2026-03-16T08:00:00.000Z	33 \| good	6.322 \| good	26.459 \| good	29.963 \| good	0.835 \| good	2.716 \| good	0.022 \| good
2026-03-16T09:00:00.000Z	33 \| good	6.322 \| good	26.459 \| good	29.963 \| good	0.835 \| good	2.716 \| good	0.022 \| good
2026-03-16T10:00:00.000Z	36 \| good	4.774 \| good	11.403 \| good	39.35 \| good	0.364 \| good	4.769 \| good	0.137 \| good
2026-03-16T11:00:00.000Z	39 \| good	4.78 \| good	10.691 \| good	42.198 \| good	0.308 \| good	4.1 \| good	0.135 \| good
2026-03-16T12:00:00.000Z	40 \| good	4.778 \| good	10.117 \| good	43.466 \| good	0.278 \| good	3.618 \| good	0.133 \| good
2026-03-16T13:00:00.000Z	41 \| good	4.502 \| good	10.056 \| good	44.121 \| good	0.251 \| good	3.668 \| good	0.133 \| good
2026-03-16T14:00:00.000Z	40 \| good	4.782 \| good	10.234 \| good	43.16 \| good	0.236 \| good	3.841 \| good	0.133 \| good
2026-03-16T15:00:00.000Z	39 \| good	5.326 \| good	11.89 \| good	42.407 \| good	0.24 \| good	4.298 \| good	0.135 \| good
2026-03-16T16:00:00.000Z	38 \| good	5.888 \| good	12.719 \| good	40.886 \| good	0.291 \| good	5.422 \| good	0.14 \| good
2026-03-16T17:00:00.000Z	35 \| good	6.49 \| good	13.451 \| good	38.494 \| good	0.357 \| good	7.568 \| good	0.15 \| good
2026-03-16T18:00:00.000Z	38 \| good	7.203 \| good	14.056 \| good	35.775 \| good	0.484 \| good	10.805 \| good	0.162 \| good
2026-03-16T19:00:00.000Z	44 \| good	7.569 \| good	13.932 \| good	33.669 \| good	0.549 \| good	12.794 \| good	0.166 \| good
2026-03-16T20:00:00.000Z	44 \| good	7.852 \| good	13.292 \| good	33.151 \| good	0.568 \| good	12.486 \| good	0.149 \| good
2026-03-16T21:00:00.000Z	44 \| good	8.141 \| good	14.109 \| good	33.767 \| good	0.551 \| good	11.153 \| good	0.142 \| good
2026-03-16T22:00:00.000Z	44 \| good	7.859 \| good	15.575 \| good	35.491 \| good	0.521 \| good	9.602 \| good	0.137 \| good
2026-03-16T23:00:00.000Z	38 \| good	7.344 \| good	16.977 \| good	37.173 \| good	0.466 \| good	8.638 \| good	0.133 \| good
2026-03-17T00:00:00.000Z	38 \| good	7.06 \| good	16.792 \| good	37.927 \| good	0.393 \| good	7.081 \| good	0.132 \| good
2026-03-17T01:00:00.000Z	38 \| good	6.949 \| good	15.895 \| good	38.805 \| good	0.333 \| good	5.43 \| good	0.128 \| good
2026-03-17T02:00:00.000Z	38 \| good	6.669 \| good	15.461 \| good	38.859 \| good	0.278 \| good	4.343 \| good	0.122 \| good
2026-03-17T03:00:00.000Z	36 \| good	6.301 \| good	14.808 \| good	39.077 \| good	0.267 \| good	3.467 \| good	0.119 \| good
2026-03-17T04:00:00.000Z	36 \| good	6.108 \| good	14.176 \| good	38.851 \| good	0.288 \| good	3.228 \| good	0.116 \| good
2026-03-17T05:00:00.000Z	35 \| good	5.934 \| good	13.679 \| good	38.044 \| good	0.329 \| good	3.418 \| good	0.116 \| good
2026-03-17T06:00:00.000Z	34 \| good	6.005 \| good	13.382 \| good	37.363 \| good	0.383 \| good	4.261 \| good	0.117 \| good
2026-03-17T07:00:00.000Z	34 \| good	6.4 \| good	12.939 \| good	36.562 \| good	0.491 \| good	5.853 \| good	0.125 \| good
2026-03-17T08:00:00.000Z	38 \| good	6.714 \| good	12.256 \| good	35.816 \| good	0.552 \| good	8.562 \| good	0.133 \| good
2026-03-17T09:00:00.000Z	38 \| good	6.73 \| good	11.375 \| good	36.99 \| good	0.521 \| good	9.224 \| good	0.132 \| good
2026-03-17T10:00:00.000Z	38 \| good	6.534 \| good	10.717 \| good	38.284 \| good	0.511 \| good	7.718 \| good	0.131 \| good
2026-03-17T11:00:00.000Z	37 \| good	6.289 \| good	10.009 \| good	40.494 \| good	0.426 \| good	5.751 \| good	0.126 \| good
2026-03-17T12:00:00.000Z	40 \| good	6.137 \| good	9.877 \| good	43.35 \| good	0.406 \| good	4.463 \| good	0.124 \| good
2026-03-17T13:00:00.000Z	41 \| good	6.044 \| good	9.648 \| good	44.398 \| good	0.363 \| good	3.984 \| good	0.124 \| good
2026-03-17T14:00:00.000Z	42 \| good	6.082 \| good	10.242 \| good	45.475 \| good	0.35 \| good	3.978 \| good	0.124 \| good
2026-03-17T15:00:00.000Z	44 \| good	6.103 \| good	11.425 \| good	46.86 \| good	0.358 \| good	4.254 \| good	0.125 \| good
2026-03-17T16:00:00.000Z	44 \| good	6.389 \| good	12.194 \| good	46.981 \| good	0.366 \| good	5.374 \| good	0.127 \| good
2026-03-17T17:00:00.000Z	41 \| good	6.959 \| good	12.661 \| good	43.691 \| good	0.411 \| good	6.97 \| good	0.135 \| good
2026-03-17T18:00:00.000Z	49 \| good	8.559 \| good	14.169 \| good	37.696 \| good	0.549 \| good	11.01 \| good	0.15 \| good
2026-03-17T19:00:00.000Z	52 \| moderate	9.949 \| good	15.943 \| good	31.188 \| good	0.781 \| good	16.258 \| good	0.171 \| good
2026-03-17T20:00:00.000Z	56 \| moderate	11.543 \| good	18.456 \| good	27.295 \| good	0.953 \| good	19.216 \| good	0.171 \| good
2026-03-17T21:00:00.000Z	58 \| moderate	13.096 \| fine	20.101 \| good	22.58 \| good	1.08 \| good	21.209 \| good	0.173 \| good
2026-03-17T22:00:00.000Z	62 \| moderate	14.866 \| fine	20.919 \| good	16.568 \| good	1.329 \| good	24.516 \| good	0.184 \| good
2026-03-17T23:00:00.000Z	64 \| moderate	16.262 \| fine	21.5 \| good	11.89 \| good	1.385 \| good	25.978 \| good	0.185 \| good
2026-03-18T00:00:00.000Z	66 \| moderate	16.623 \| fine	22.001 \| good	10.295 \| good	1.328 \| good	27.794 \| good	0.182 \| good
2026-03-18T01:00:00.000Z	64 \| moderate	16.487 \| fine	21.523 \| good	9.686 \| good	1.182 \| good	23.007 \| good	0.175 \| good
2026-03-18T02:00:00.000Z	64 \| moderate	15.688 \| fine	20.819 \| good	8.499 \| good	1.112 \| good	24.537 \| good	0.163 \| good
2026-03-18T03:00:00.000Z	64 \| moderate	15.862 \| fine	20.704 \| good	9.531 \| good	1.084 \| good	20.392 \| good	0.156 \| good
2026-03-18T04:00:00.000Z	62 \| moderate	15.068 \| fine	19.484 \| good	9.534 \| good	0.978 \| good	18.181 \| good	0.156 \| good
2026-03-18T05:00:00.000Z	62 \| moderate	14.663 \| fine	18.515 \| good	8.003 \| good	1.073 \| good	16.42 \| good	0.161 \| good
2026-03-18T06:00:00.000Z	62 \| moderate	14.725 \| fine	18.292 \| good	5.745 \| good	1.2 \| good	17.724 \| good	0.173 \| good
2026-03-18T07:00:00.000Z	62 \| moderate	15.131 \| fine	19.339 \| good	5.696 \| good	1.336 \| good	18.35 \| good	0.185 \| good
2026-03-18T08:00:00.000Z	62 \| moderate	15.13 \| fine	20.758 \| good	10.181 \| good	1.356 \| good	15.473 \| good	0.202 \| good
2026-03-18T09:00:00.000Z	62 \| moderate	14.535 \| fine	19.254 \| good	12.417 \| good	1.414 \| good	13.687 \| good	0.204 \| good

Current air quality index in Waltham Cross, Hertfordshire today

Common air pollutants in Waltham Cross, Hertfordshire

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Waltham Cross, Hertfordshire air quality forecast and history

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Waltham Cross, Hertfordshire

Air quality in nearby cities

Cheshunt, Hertfordshire

Waltham Abbey, Essex

Loughton, Essex

Buckhurst Hill, Essex

Hoddesdon, Hertfordshire

Epping, Essex

How accurate is Hertfordshire, UK air quality data?

Air quality levels in UK

Frequently asked questions

How frequently does the air quality data for Waltham Cross, Hertfordshire get updated?

What time in the past 24 hours saw the poorest air quality in Waltham Cross, Hertfordshire?

When was air quality in Waltham Cross, Hertfordshire the best over the past 24 hours?

What is the air quality in Waltham Cross, Hertfordshire right now?

What pollutant is most frequently found in Waltham Cross, Hertfordshire?

What can I do if the air quality in Waltham Cross, Hertfordshire is poor?

What is the PM2.5 concentration in Waltham Cross, Hertfordshire right now?

What is the current level of PM10 in Waltham Cross, Hertfordshire?

What is the current level of carbon monoxide (CO) in Waltham Cross, Hertfordshire?

What is the current level of sulfur dioxide (SO2) in Waltham Cross, Hertfordshire?

What is the current level of ozone (O3) in Waltham Cross, Hertfordshire?

What is the current level of nitrogen dioxide (NO2) in Waltham Cross, Hertfordshire?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 concentration in Waltham Cross, Hertfordshire right now?

What is the current level of PM₁₀ in Waltham Cross, Hertfordshire?

What is the current level of sulfur dioxide (SO₂) in Waltham Cross, Hertfordshire?

What is the current level of ozone (O₃) in Waltham Cross, Hertfordshire?

What is the current level of nitrogen dioxide (NO₂) in Waltham Cross, Hertfordshire?