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

Waltham Cross, Hertfordshire currently has a PM10 concentration of 32.912 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 0.578 ppb.

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

Waltham Cross, Hertfordshire currently has an ozone (O3) concentration of 54.429 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 26.017 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 10.767 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)

Moderate

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)

10.77 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

32.91 μg/m³

155

255

425

605+

Ozone (O₃)

54.43 ppb

201

201+

Sulfur Dioxide (SO₂)

0.58 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

26.02 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.01 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

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
2026-08-12T19:00:00.000Z	42 \| good	6.781 \| good	23.905 \| good	45.191 \| good	0.971 \| good	14.533 \| good	0.008 \| good
2026-08-12T20:00:00.000Z	41 \| good	6.75 \| good	22.665 \| good	44.212 \| good	1.034 \| good	14.533 \| good	0.008 \| good
2026-08-12T21:00:00.000Z	40 \| good	6.357 \| good	25.875 \| good	43.201 \| good	1.052 \| good	14.891 \| good	0.006 \| good
2026-08-12T22:00:00.000Z	43 \| good	6.325 \| good	20.728 \| good	46.293 \| good	1.129 \| good	14.819 \| good	0.006 \| good
2026-08-12T23:00:00.000Z	42 \| good	6.099 \| good	19.029 \| good	45.457 \| good	1.07 \| good	14.462 \| good	0.006 \| good
2026-08-13T00:00:00.000Z	48 \| good	6.45 \| good	31.174 \| good	52.057 \| good	1.305 \| good	17.271 \| good	0.165 \| good
2026-08-13T01:00:00.000Z	50 \| good	8.066 \| good	28.96 \| good	53.854 \| good	0.87 \| good	17.141 \| good	0.153 \| good
2026-08-13T02:00:00.000Z	49 \| good	8.672 \| good	26.128 \| good	44.396 \| good	0.761 \| good	17.792 \| good	0.158 \| good
2026-08-13T03:00:00.000Z	39 \| good	7.09 \| good	25.307 \| good	41.571 \| good	0.756 \| good	17.598 \| good	0.158 \| good
2026-08-13T04:00:00.000Z	38 \| good	6.928 \| good	28.092 \| good	38.516 \| good	0.832 \| good	17.792 \| good	0.165 \| good
2026-08-13T05:00:00.000Z	44 \| good	8.185 \| good	26.86 \| good	38.17 \| good	0.668 \| good	18.667 \| good	0.006 \| good
2026-08-13T06:00:00.000Z	49 \| good	9.122 \| good	24.315 \| good	32.632 \| good	0.693 \| good	19.24 \| good	0.007 \| good
2026-08-13T07:00:00.000Z	49 \| good	9.014 \| good	25.456 \| good	36.949 \| good	0.668 \| good	20.098 \| good	0.007 \| good
2026-08-13T08:00:00.000Z	44 \| good	8.297 \| good	22.908 \| good	33.357 \| good	0.73 \| good	20.384 \| good	0.006 \| good
2026-08-13T09:00:00.000Z	54 \| moderate	11.377 \| good	30.673 \| good	33.875 \| good	0.898 \| good	19.526 \| good	0.007 \| good
2026-08-13T10:00:00.000Z	38 \| good	6.957 \| good	23.361 \| good	37.592 \| good	6.171 \| good	20.241 \| good	0.007 \| good
2026-08-13T11:00:00.000Z	44 \| good	8.097 \| good	31.506 \| good	33.585 \| good	1.044 \| good	20.027 \| good	0.007 \| good
2026-08-13T12:00:00.000Z	52 \| moderate	10.425 \| good	22.649 \| good	31.334 \| good	1.106 \| good	19.24 \| good	0.007 \| good
2026-08-13T13:00:00.000Z	44 \| good	7.973 \| good	23.648 \| good	32.122 \| good	1.157 \| good	18.596 \| good	0.007 \| good
2026-08-13T14:00:00.000Z	38 \| good	7.271 \| good	23.118 \| good	38.95 \| good	1.07 \| good	18.238 \| good	0.007 \| good
2026-08-13T15:00:00.000Z	49 \| good	8.671 \| good	27.138 \| good	38.544 \| good	0.923 \| good	18.31 \| good	0.007 \| good
2026-08-13T16:00:00.000Z	49 \| good	8.747 \| good	25.101 \| good	44.199 \| good	0.939 \| good	18.238 \| good	0.007 \| good
2026-08-13T17:00:00.000Z	49 \| good	8.677 \| good	27.381 \| good	50.793 \| good	1.002 \| good	18.238 \| good	0.007 \| good
2026-08-13T18:00:00.000Z	67 \| moderate	7.879 \| good	30.504 \| good	59.654 \| fine	0.937 \| good	18.095 \| good	0.009 \| good
2026-08-13T19:00:00.000Z	44 \| good	8.263 \| good	27.956 \| good	40.256 \| good	0.802 \| good	18.739 \| good	0.009 \| good
2026-08-13T20:00:00.000Z	45 \| good	8.213 \| good	25.388 \| good	49.334 \| good	0.853 \| good	19.168 \| good	0.009 \| good
2026-08-13T21:00:00.000Z	49 \| good	8.993 \| good	26.983 \| good	47.105 \| good	0.688 \| good	19.597 \| good	0.01 \| good
2026-08-13T22:00:00.000Z	74 \| moderate	8.139 \| good	27.596 \| good	61.842 \| fine	0.854 \| good	20.241 \| good	0.007 \| good
2026-08-13T23:00:00.000Z	49 \| good	8.722 \| good	21.668 \| good	52.992 \| good	0.768 \| good	20.957 \| good	0.005 \| good
2026-08-14T00:00:00.000Z	71 \| moderate	7.891 \| good	31.242 \| good	61.12 \| fine	0.903 \| good	27.296 \| good	0.151 \| good
2026-08-14T01:00:00.000Z	54 \| moderate	7.609 \| good	26.518 \| good	56.442 \| fine	0.81 \| good	24.976 \| good	0.139 \| good
2026-08-14T02:00:00.000Z	52 \| moderate	9.587 \| good	27.894 \| good	55.192 \| fine	0.893 \| good	23.507 \| good	0.142 \| good
2026-08-14T03:00:00.000Z	50 \| good	7.713 \| good	24.755 \| good	53.608 \| good	0.927 \| good	23.541 \| good	0.148 \| good
2026-08-14T04:00:00.000Z	48 \| good	8.399 \| good	25.504 \| good	51.539 \| good	0.921 \| good	24.809 \| good	0.148 \| good
2026-08-14T05:00:00.000Z	47 \| good	8.368 \| good	31.085 \| good	50.539 \| good	0.768 \| good	26.302 \| good	0.006 \| good
2026-08-14T06:00:00.000Z	52 \| moderate	10.134 \| good	28.107 \| good	52.237 \| good	0.713 \| good	26.159 \| good	0.006 \| good
2026-08-14T07:00:00.000Z	52 \| moderate	9.927 \| good	34.772 \| good	49.035 \| good	0.766 \| good	26.66 \| good	0.007 \| good
2026-08-14T08:00:00.000Z	49 \| good	8.651 \| good	25.404 \| good	43.486 \| good	0.745 \| good	26.66 \| good	0.006 \| good
2026-08-14T09:00:00.000Z	54 \| moderate	11.232 \| good	24.861 \| good	48.224 \| good	0.765 \| good	26.159 \| good	0.006 \| good
2026-08-14T10:00:00.000Z	54 \| moderate	10.743 \| good	27.479 \| good	49.77 \| good	0.777 \| good	25.729 \| good	0.007 \| good
2026-08-14T11:00:00.000Z	54 \| moderate	11.232 \| good	31.363 \| good	49.245 \| good	0.666 \| good	25.443 \| good	0.007 \| good
2026-08-14T12:00:00.000Z	49 \| good	9.365 \| good	24.678 \| good	48.907 \| good	0.777 \| good	25.515 \| good	0.007 \| good
2026-08-14T13:00:00.000Z	54 \| moderate	11.356 \| good	22.682 \| good	42.072 \| good	0.616 \| good	25.443 \| good	0.007 \| good
2026-08-14T14:00:00.000Z	54 \| moderate	11.481 \| good	25.586 \| good	44.979 \| good	0.651 \| good	25.443 \| good	0.008 \| good
2026-08-14T15:00:00.000Z	44 \| good	8.455 \| good	27.63 \| good	41.201 \| good	0.652 \| good	25.944 \| good	0.007 \| good
2026-08-14T16:00:00.000Z	49 \| good	9.491 \| good	27.056 \| good	47.358 \| good	0.652 \| good	25.801 \| good	0.007 \| good
2026-08-14T17:00:00.000Z	54 \| moderate	10.715 \| good	32.735 \| good	54.421 \| good	0.578 \| good	26.016 \| good	0.007 \| good
2026-08-14T18:00:00.000Z	54 \| moderate	10.767 \| good	32.912 \| good	54.429 \| good	0.578 \| good	26.017 \| good	0.007 \| good
2026-08-13T21:00:00.000Z	44 \| good	8.499 \| good	15.295 \| good	47.936 \| good	0.569 \| good	10.31 \| good	0.155 \| good
2026-08-13T22:00:00.000Z	49 \| good	8.534 \| good	15.788 \| good	42.168 \| good	0.712 \| good	12.864 \| good	0.161 \| good
2026-08-13T23:00:00.000Z	49 \| good	9.045 \| good	15.845 \| good	40.023 \| good	0.731 \| good	13.321 \| good	0.167 \| good
2026-08-14T00:00:00.000Z	52 \| moderate	10.067 \| good	16.51 \| good	40.111 \| good	0.729 \| good	12.378 \| good	0.173 \| good
2026-08-14T01:00:00.000Z	54 \| moderate	11.123 \| good	17.896 \| good	38.818 \| good	0.744 \| good	12.171 \| good	0.177 \| good
2026-08-14T02:00:00.000Z	56 \| moderate	12.486 \| fine	20.277 \| good	35.387 \| good	0.746 \| good	11.171 \| good	0.179 \| good
2026-08-14T03:00:00.000Z	58 \| moderate	13.245 \| fine	21.62 \| good	30.713 \| good	0.695 \| good	9.202 \| good	0.178 \| good
2026-08-14T04:00:00.000Z	58 \| moderate	12.755 \| fine	21.031 \| good	27.151 \| good	0.574 \| good	7.801 \| good	0.169 \| good
2026-08-14T05:00:00.000Z	58 \| moderate	12.558 \| fine	20.431 \| good	23.873 \| good	0.472 \| good	7.104 \| good	0.16 \| good
2026-08-14T06:00:00.000Z	56 \| moderate	12.307 \| fine	19.946 \| good	23.577 \| good	0.45 \| good	6.982 \| good	0.154 \| good
2026-08-14T07:00:00.000Z	52 \| moderate	9.945 \| good	18.096 \| good	26.704 \| good	0.451 \| good	7.667 \| good	0.145 \| good
2026-08-14T08:00:00.000Z	49 \| good	8.971 \| good	16.201 \| good	27.126 \| good	0.394 \| good	6.233 \| good	0.137 \| good
2026-08-14T09:00:00.000Z	44 \| good	8.313 \| good	14.788 \| good	29.493 \| good	0.346 \| good	4.754 \| good	0.134 \| good
2026-08-14T10:00:00.000Z	44 \| good	7.736 \| good	14.821 \| good	38.027 \| good	0.302 \| good	3.586 \| good	0.133 \| good
2026-08-14T11:00:00.000Z	44 \| good	8.024 \| good	12.297 \| good	44.861 \| good	0.233 \| good	2.655 \| good	0.129 \| good
2026-08-14T12:00:00.000Z	46 \| good	6.994 \| good	12.224 \| good	50.339 \| good	0.199 \| good	1.978 \| good	0.119 \| good
2026-08-14T13:00:00.000Z	44 \| good	5.435 \| good	8.265 \| good	47.03 \| good	0.167 \| good	1.766 \| good	0.111 \| good
2026-08-14T14:00:00.000Z	42 \| good	4.408 \| good	5.99 \| good	44.535 \| good	0.142 \| good	1.722 \| good	0.109 \| good
2026-08-14T15:00:00.000Z	42 \| good	4.003 \| good	5.585 \| good	44.776 \| good	0.136 \| good	1.847 \| good	0.11 \| good
2026-08-14T16:00:00.000Z	41 \| good	4.293 \| good	6.101 \| good	43.953 \| good	0.135 \| good	2.148 \| good	0.111 \| good
2026-08-14T17:00:00.000Z	39 \| good	3.846 \| good	6.002 \| good	41.568 \| good	0.139 \| good	2.598 \| good	0.112 \| good
2026-08-14T18:00:00.000Z	35 \| good	3.697 \| good	5.977 \| good	38.381 \| good	0.152 \| good	3.197 \| good	0.113 \| good
2026-08-14T19:00:00.000Z	31 \| good	3.645 \| good	6.276 \| good	33.987 \| good	0.177 \| good	3.824 \| good	0.111 \| good
2026-08-14T20:00:00.000Z	30 \| good	3.748 \| good	6.666 \| good	31.55 \| good	0.205 \| good	4.365 \| good	0.113 \| good
2026-08-14T21:00:00.000Z	27 \| good	4.157 \| good	6.864 \| good	28.965 \| good	0.228 \| good	4.644 \| good	0.115 \| good
2026-08-14T22:00:00.000Z	25 \| good	4.281 \| good	6.157 \| good	26.931 \| good	0.222 \| good	4.392 \| good	0.117 \| good
2026-08-14T23:00:00.000Z	26 \| good	4.022 \| good	5.651 \| good	28.298 \| good	0.219 \| good	4.44 \| good	0.116 \| good
2026-08-15T00:00:00.000Z	28 \| good	3.899 \| good	6.072 \| good	29.509 \| good	0.236 \| good	4.111 \| good	0.119 \| good
2026-08-15T01:00:00.000Z	26 \| good	3.777 \| good	6.421 \| good	27.928 \| good	0.271 \| good	3.441 \| good	0.12 \| good
2026-08-15T02:00:00.000Z	23 \| good	3.555 \| good	6.052 \| good	25.335 \| good	0.229 \| good	3.216 \| good	0.119 \| good
2026-08-15T03:00:00.000Z	20 \| good	3.318 \| good	5.609 \| good	22.007 \| good	0.177 \| good	3.201 \| good	0.117 \| good
2026-08-15T04:00:00.000Z	19 \| good	3.274 \| good	5.588 \| good	20.671 \| good	0.159 \| good	3.041 \| good	0.113 \| good
2026-08-15T05:00:00.000Z	19 \| good	3.247 \| good	5.608 \| good	20.126 \| good	0.194 \| good	3.052 \| good	0.112 \| good
2026-08-15T06:00:00.000Z	19 \| good	3.469 \| good	5.86 \| good	19.823 \| good	0.214 \| good	3.016 \| good	0.112 \| good
2026-08-15T07:00:00.000Z	19 \| good	3.436 \| good	5.831 \| good	19.576 \| good	0.228 \| good	3.105 \| good	0.117 \| good
2026-08-15T08:00:00.000Z	22 \| good	3.65 \| good	5.634 \| good	20.069 \| good	0.199 \| good	2.821 \| good	0.117 \| good
2026-08-15T09:00:00.000Z	22 \| good	3.891 \| good	5.82 \| good	21.705 \| good	0.2 \| good	2.437 \| good	0.117 \| good
2026-08-15T10:00:00.000Z	24 \| good	4.302 \| good	5.761 \| good	25.616 \| good	0.222 \| good	2.223 \| good	0.117 \| good
2026-08-15T11:00:00.000Z	26 \| good	4.42 \| good	5.988 \| good	28.145 \| good	0.206 \| good	1.977 \| good	0.117 \| good
2026-08-15T12:00:00.000Z	29 \| good	4.422 \| good	5.892 \| good	31.099 \| good	0.244 \| good	1.665 \| good	0.116 \| good
2026-08-15T13:00:00.000Z	30 \| good	4.433 \| good	5.999 \| good	32.177 \| good	0.267 \| good	1.464 \| good	0.116 \| good
2026-08-15T14:00:00.000Z	32 \| good	4.076 \| good	5.937 \| good	34.785 \| good	0.252 \| good	1.308 \| good	0.116 \| good
2026-08-15T15:00:00.000Z	35 \| good	3.879 \| good	5.714 \| good	38.254 \| good	0.217 \| good	1.28 \| good	0.116 \| good
2026-08-15T16:00:00.000Z	36 \| good	3.884 \| good	5.85 \| good	39.288 \| good	0.204 \| good	1.425 \| good	0.116 \| good
2026-08-15T17:00:00.000Z	36 \| good	4.052 \| good	5.977 \| good	39.209 \| good	0.223 \| good	1.581 \| good	0.117 \| good
2026-08-15T18:00:00.000Z	34 \| good	3.963 \| good	5.992 \| good	37.342 \| good	0.235 \| good	1.739 \| good	0.116 \| good
2026-08-15T19:00:00.000Z	33 \| good	4.084 \| good	6.494 \| good	36.344 \| good	0.231 \| good	2.084 \| good	0.116 \| good
2026-08-15T20:00:00.000Z	29 \| good	4.115 \| good	6.579 \| good	31.253 \| good	0.229 \| good	2.952 \| good	0.116 \| good

Waltham Cross

Empower business decisions with accurate air quality data

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

0.02ppm

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

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 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, 2026-08-13.

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

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

The air quality in Waltham Cross, Hertfordshire right now is Moderate, with an AQI of 54.

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 10.767 μg/m³.

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

Waltham Cross, Hertfordshire currently has a PM₁₀ concentration of 32.912 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 0.007 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 0.578 ppb.

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

Waltham Cross, Hertfordshire currently has an ozone (O₃) concentration of 54.429 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 26.017 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	42 \| good	6.781 \| good	23.905 \| good	45.191 \| good	0.971 \| good	14.533 \| good	0.008 \| good
2026-08-12T20:00:00.000Z	41 \| good	6.75 \| good	22.665 \| good	44.212 \| good	1.034 \| good	14.533 \| good	0.008 \| good
2026-08-12T21:00:00.000Z	40 \| good	6.357 \| good	25.875 \| good	43.201 \| good	1.052 \| good	14.891 \| good	0.006 \| good
2026-08-12T22:00:00.000Z	43 \| good	6.325 \| good	20.728 \| good	46.293 \| good	1.129 \| good	14.819 \| good	0.006 \| good
2026-08-12T23:00:00.000Z	42 \| good	6.099 \| good	19.029 \| good	45.457 \| good	1.07 \| good	14.462 \| good	0.006 \| good
2026-08-13T00:00:00.000Z	48 \| good	6.45 \| good	31.174 \| good	52.057 \| good	1.305 \| good	17.271 \| good	0.165 \| good
2026-08-13T01:00:00.000Z	50 \| good	8.066 \| good	28.96 \| good	53.854 \| good	0.87 \| good	17.141 \| good	0.153 \| good
2026-08-13T02:00:00.000Z	49 \| good	8.672 \| good	26.128 \| good	44.396 \| good	0.761 \| good	17.792 \| good	0.158 \| good
2026-08-13T03:00:00.000Z	39 \| good	7.09 \| good	25.307 \| good	41.571 \| good	0.756 \| good	17.598 \| good	0.158 \| good
2026-08-13T04:00:00.000Z	38 \| good	6.928 \| good	28.092 \| good	38.516 \| good	0.832 \| good	17.792 \| good	0.165 \| good
2026-08-13T05:00:00.000Z	44 \| good	8.185 \| good	26.86 \| good	38.17 \| good	0.668 \| good	18.667 \| good	0.006 \| good
2026-08-13T06:00:00.000Z	49 \| good	9.122 \| good	24.315 \| good	32.632 \| good	0.693 \| good	19.24 \| good	0.007 \| good
2026-08-13T07:00:00.000Z	49 \| good	9.014 \| good	25.456 \| good	36.949 \| good	0.668 \| good	20.098 \| good	0.007 \| good
2026-08-13T08:00:00.000Z	44 \| good	8.297 \| good	22.908 \| good	33.357 \| good	0.73 \| good	20.384 \| good	0.006 \| good
2026-08-13T09:00:00.000Z	54 \| moderate	11.377 \| good	30.673 \| good	33.875 \| good	0.898 \| good	19.526 \| good	0.007 \| good
2026-08-13T10:00:00.000Z	38 \| good	6.957 \| good	23.361 \| good	37.592 \| good	6.171 \| good	20.241 \| good	0.007 \| good
2026-08-13T11:00:00.000Z	44 \| good	8.097 \| good	31.506 \| good	33.585 \| good	1.044 \| good	20.027 \| good	0.007 \| good
2026-08-13T12:00:00.000Z	52 \| moderate	10.425 \| good	22.649 \| good	31.334 \| good	1.106 \| good	19.24 \| good	0.007 \| good
2026-08-13T13:00:00.000Z	44 \| good	7.973 \| good	23.648 \| good	32.122 \| good	1.157 \| good	18.596 \| good	0.007 \| good
2026-08-13T14:00:00.000Z	38 \| good	7.271 \| good	23.118 \| good	38.95 \| good	1.07 \| good	18.238 \| good	0.007 \| good
2026-08-13T15:00:00.000Z	49 \| good	8.671 \| good	27.138 \| good	38.544 \| good	0.923 \| good	18.31 \| good	0.007 \| good
2026-08-13T16:00:00.000Z	49 \| good	8.747 \| good	25.101 \| good	44.199 \| good	0.939 \| good	18.238 \| good	0.007 \| good
2026-08-13T17:00:00.000Z	49 \| good	8.677 \| good	27.381 \| good	50.793 \| good	1.002 \| good	18.238 \| good	0.007 \| good
2026-08-13T18:00:00.000Z	67 \| moderate	7.879 \| good	30.504 \| good	59.654 \| fine	0.937 \| good	18.095 \| good	0.009 \| good
2026-08-13T19:00:00.000Z	44 \| good	8.263 \| good	27.956 \| good	40.256 \| good	0.802 \| good	18.739 \| good	0.009 \| good
2026-08-13T20:00:00.000Z	45 \| good	8.213 \| good	25.388 \| good	49.334 \| good	0.853 \| good	19.168 \| good	0.009 \| good
2026-08-13T21:00:00.000Z	49 \| good	8.993 \| good	26.983 \| good	47.105 \| good	0.688 \| good	19.597 \| good	0.01 \| good
2026-08-13T22:00:00.000Z	74 \| moderate	8.139 \| good	27.596 \| good	61.842 \| fine	0.854 \| good	20.241 \| good	0.007 \| good
2026-08-13T23:00:00.000Z	49 \| good	8.722 \| good	21.668 \| good	52.992 \| good	0.768 \| good	20.957 \| good	0.005 \| good
2026-08-14T00:00:00.000Z	71 \| moderate	7.891 \| good	31.242 \| good	61.12 \| fine	0.903 \| good	27.296 \| good	0.151 \| good
2026-08-14T01:00:00.000Z	54 \| moderate	7.609 \| good	26.518 \| good	56.442 \| fine	0.81 \| good	24.976 \| good	0.139 \| good
2026-08-14T02:00:00.000Z	52 \| moderate	9.587 \| good	27.894 \| good	55.192 \| fine	0.893 \| good	23.507 \| good	0.142 \| good
2026-08-14T03:00:00.000Z	50 \| good	7.713 \| good	24.755 \| good	53.608 \| good	0.927 \| good	23.541 \| good	0.148 \| good
2026-08-14T04:00:00.000Z	48 \| good	8.399 \| good	25.504 \| good	51.539 \| good	0.921 \| good	24.809 \| good	0.148 \| good
2026-08-14T05:00:00.000Z	47 \| good	8.368 \| good	31.085 \| good	50.539 \| good	0.768 \| good	26.302 \| good	0.006 \| good
2026-08-14T06:00:00.000Z	52 \| moderate	10.134 \| good	28.107 \| good	52.237 \| good	0.713 \| good	26.159 \| good	0.006 \| good
2026-08-14T07:00:00.000Z	52 \| moderate	9.927 \| good	34.772 \| good	49.035 \| good	0.766 \| good	26.66 \| good	0.007 \| good
2026-08-14T08:00:00.000Z	49 \| good	8.651 \| good	25.404 \| good	43.486 \| good	0.745 \| good	26.66 \| good	0.006 \| good
2026-08-14T09:00:00.000Z	54 \| moderate	11.232 \| good	24.861 \| good	48.224 \| good	0.765 \| good	26.159 \| good	0.006 \| good
2026-08-14T10:00:00.000Z	54 \| moderate	10.743 \| good	27.479 \| good	49.77 \| good	0.777 \| good	25.729 \| good	0.007 \| good
2026-08-14T11:00:00.000Z	54 \| moderate	11.232 \| good	31.363 \| good	49.245 \| good	0.666 \| good	25.443 \| good	0.007 \| good
2026-08-14T12:00:00.000Z	49 \| good	9.365 \| good	24.678 \| good	48.907 \| good	0.777 \| good	25.515 \| good	0.007 \| good
2026-08-14T13:00:00.000Z	54 \| moderate	11.356 \| good	22.682 \| good	42.072 \| good	0.616 \| good	25.443 \| good	0.007 \| good
2026-08-14T14:00:00.000Z	54 \| moderate	11.481 \| good	25.586 \| good	44.979 \| good	0.651 \| good	25.443 \| good	0.008 \| good
2026-08-14T15:00:00.000Z	44 \| good	8.455 \| good	27.63 \| good	41.201 \| good	0.652 \| good	25.944 \| good	0.007 \| good
2026-08-14T16:00:00.000Z	49 \| good	9.491 \| good	27.056 \| good	47.358 \| good	0.652 \| good	25.801 \| good	0.007 \| good
2026-08-14T17:00:00.000Z	54 \| moderate	10.715 \| good	32.735 \| good	54.421 \| good	0.578 \| good	26.016 \| good	0.007 \| good
2026-08-14T18:00:00.000Z	54 \| moderate	10.767 \| good	32.912 \| good	54.429 \| good	0.578 \| good	26.017 \| good	0.007 \| good
2026-08-13T21:00:00.000Z	44 \| good	8.499 \| good	15.295 \| good	47.936 \| good	0.569 \| good	10.31 \| good	0.155 \| good
2026-08-13T22:00:00.000Z	49 \| good	8.534 \| good	15.788 \| good	42.168 \| good	0.712 \| good	12.864 \| good	0.161 \| good
2026-08-13T23:00:00.000Z	49 \| good	9.045 \| good	15.845 \| good	40.023 \| good	0.731 \| good	13.321 \| good	0.167 \| good
2026-08-14T00:00:00.000Z	52 \| moderate	10.067 \| good	16.51 \| good	40.111 \| good	0.729 \| good	12.378 \| good	0.173 \| good
2026-08-14T01:00:00.000Z	54 \| moderate	11.123 \| good	17.896 \| good	38.818 \| good	0.744 \| good	12.171 \| good	0.177 \| good
2026-08-14T02:00:00.000Z	56 \| moderate	12.486 \| fine	20.277 \| good	35.387 \| good	0.746 \| good	11.171 \| good	0.179 \| good
2026-08-14T03:00:00.000Z	58 \| moderate	13.245 \| fine	21.62 \| good	30.713 \| good	0.695 \| good	9.202 \| good	0.178 \| good
2026-08-14T04:00:00.000Z	58 \| moderate	12.755 \| fine	21.031 \| good	27.151 \| good	0.574 \| good	7.801 \| good	0.169 \| good
2026-08-14T05:00:00.000Z	58 \| moderate	12.558 \| fine	20.431 \| good	23.873 \| good	0.472 \| good	7.104 \| good	0.16 \| good
2026-08-14T06:00:00.000Z	56 \| moderate	12.307 \| fine	19.946 \| good	23.577 \| good	0.45 \| good	6.982 \| good	0.154 \| good
2026-08-14T07:00:00.000Z	52 \| moderate	9.945 \| good	18.096 \| good	26.704 \| good	0.451 \| good	7.667 \| good	0.145 \| good
2026-08-14T08:00:00.000Z	49 \| good	8.971 \| good	16.201 \| good	27.126 \| good	0.394 \| good	6.233 \| good	0.137 \| good
2026-08-14T09:00:00.000Z	44 \| good	8.313 \| good	14.788 \| good	29.493 \| good	0.346 \| good	4.754 \| good	0.134 \| good
2026-08-14T10:00:00.000Z	44 \| good	7.736 \| good	14.821 \| good	38.027 \| good	0.302 \| good	3.586 \| good	0.133 \| good
2026-08-14T11:00:00.000Z	44 \| good	8.024 \| good	12.297 \| good	44.861 \| good	0.233 \| good	2.655 \| good	0.129 \| good
2026-08-14T12:00:00.000Z	46 \| good	6.994 \| good	12.224 \| good	50.339 \| good	0.199 \| good	1.978 \| good	0.119 \| good
2026-08-14T13:00:00.000Z	44 \| good	5.435 \| good	8.265 \| good	47.03 \| good	0.167 \| good	1.766 \| good	0.111 \| good
2026-08-14T14:00:00.000Z	42 \| good	4.408 \| good	5.99 \| good	44.535 \| good	0.142 \| good	1.722 \| good	0.109 \| good
2026-08-14T15:00:00.000Z	42 \| good	4.003 \| good	5.585 \| good	44.776 \| good	0.136 \| good	1.847 \| good	0.11 \| good
2026-08-14T16:00:00.000Z	41 \| good	4.293 \| good	6.101 \| good	43.953 \| good	0.135 \| good	2.148 \| good	0.111 \| good
2026-08-14T17:00:00.000Z	39 \| good	3.846 \| good	6.002 \| good	41.568 \| good	0.139 \| good	2.598 \| good	0.112 \| good
2026-08-14T18:00:00.000Z	35 \| good	3.697 \| good	5.977 \| good	38.381 \| good	0.152 \| good	3.197 \| good	0.113 \| good
2026-08-14T19:00:00.000Z	31 \| good	3.645 \| good	6.276 \| good	33.987 \| good	0.177 \| good	3.824 \| good	0.111 \| good
2026-08-14T20:00:00.000Z	30 \| good	3.748 \| good	6.666 \| good	31.55 \| good	0.205 \| good	4.365 \| good	0.113 \| good
2026-08-14T21:00:00.000Z	27 \| good	4.157 \| good	6.864 \| good	28.965 \| good	0.228 \| good	4.644 \| good	0.115 \| good
2026-08-14T22:00:00.000Z	25 \| good	4.281 \| good	6.157 \| good	26.931 \| good	0.222 \| good	4.392 \| good	0.117 \| good
2026-08-14T23:00:00.000Z	26 \| good	4.022 \| good	5.651 \| good	28.298 \| good	0.219 \| good	4.44 \| good	0.116 \| good
2026-08-15T00:00:00.000Z	28 \| good	3.899 \| good	6.072 \| good	29.509 \| good	0.236 \| good	4.111 \| good	0.119 \| good
2026-08-15T01:00:00.000Z	26 \| good	3.777 \| good	6.421 \| good	27.928 \| good	0.271 \| good	3.441 \| good	0.12 \| good
2026-08-15T02:00:00.000Z	23 \| good	3.555 \| good	6.052 \| good	25.335 \| good	0.229 \| good	3.216 \| good	0.119 \| good
2026-08-15T03:00:00.000Z	20 \| good	3.318 \| good	5.609 \| good	22.007 \| good	0.177 \| good	3.201 \| good	0.117 \| good
2026-08-15T04:00:00.000Z	19 \| good	3.274 \| good	5.588 \| good	20.671 \| good	0.159 \| good	3.041 \| good	0.113 \| good
2026-08-15T05:00:00.000Z	19 \| good	3.247 \| good	5.608 \| good	20.126 \| good	0.194 \| good	3.052 \| good	0.112 \| good
2026-08-15T06:00:00.000Z	19 \| good	3.469 \| good	5.86 \| good	19.823 \| good	0.214 \| good	3.016 \| good	0.112 \| good
2026-08-15T07:00:00.000Z	19 \| good	3.436 \| good	5.831 \| good	19.576 \| good	0.228 \| good	3.105 \| good	0.117 \| good
2026-08-15T08:00:00.000Z	22 \| good	3.65 \| good	5.634 \| good	20.069 \| good	0.199 \| good	2.821 \| good	0.117 \| good
2026-08-15T09:00:00.000Z	22 \| good	3.891 \| good	5.82 \| good	21.705 \| good	0.2 \| good	2.437 \| good	0.117 \| good
2026-08-15T10:00:00.000Z	24 \| good	4.302 \| good	5.761 \| good	25.616 \| good	0.222 \| good	2.223 \| good	0.117 \| good
2026-08-15T11:00:00.000Z	26 \| good	4.42 \| good	5.988 \| good	28.145 \| good	0.206 \| good	1.977 \| good	0.117 \| good
2026-08-15T12:00:00.000Z	29 \| good	4.422 \| good	5.892 \| good	31.099 \| good	0.244 \| good	1.665 \| good	0.116 \| good
2026-08-15T13:00:00.000Z	30 \| good	4.433 \| good	5.999 \| good	32.177 \| good	0.267 \| good	1.464 \| good	0.116 \| good
2026-08-15T14:00:00.000Z	32 \| good	4.076 \| good	5.937 \| good	34.785 \| good	0.252 \| good	1.308 \| good	0.116 \| good
2026-08-15T15:00:00.000Z	35 \| good	3.879 \| good	5.714 \| good	38.254 \| good	0.217 \| good	1.28 \| good	0.116 \| good
2026-08-15T16:00:00.000Z	36 \| good	3.884 \| good	5.85 \| good	39.288 \| good	0.204 \| good	1.425 \| good	0.116 \| good
2026-08-15T17:00:00.000Z	36 \| good	4.052 \| good	5.977 \| good	39.209 \| good	0.223 \| good	1.581 \| good	0.117 \| good
2026-08-15T18:00:00.000Z	34 \| good	3.963 \| good	5.992 \| good	37.342 \| good	0.235 \| good	1.739 \| good	0.116 \| good
2026-08-15T19:00:00.000Z	33 \| good	4.084 \| good	6.494 \| good	36.344 \| good	0.231 \| good	2.084 \| good	0.116 \| good
2026-08-15T20:00:00.000Z	29 \| good	4.115 \| good	6.579 \| good	31.253 \| good	0.229 \| good	2.952 \| good	0.116 \| 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?