What are the current PM10 levels at St Albans, Hertfordshire?

The current PM10 levels in St Albans, Hertfordshire are 10.998 μg/m3.

What are the current sulfur dioxide (SO2) levels at St Albans, Hertfordshire?

The current sulfur dioxide (SO2) levels in St Albans, Hertfordshire are 0.378 ppb.

What are the current ozone (O3) levels at St Albans, Hertfordshire?

The current ozone (O3) levels at St Albans, Hertfordshire is 32.115 ppm.

What are the current nitrogen dioxide (NO2) levels at St Albans, Hertfordshire?

The current nitrogen dioxide (NO2) levels at St Albans, Hertfordshire is 5.736 ppb.

Real-time air quality index in St Albans, Hertfordshire today

Q: What are the current PM2.5 levels in St Albans, Hertfordshire?

The measured PM2.5 levels in St Albans, Hertfordshire at present are 5.437 μg/m3.

Stay updated with real-time air quality in St Albans, 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

St Albans, Hertfordshire

Last updated: ... (Local time)

Common air pollutants in St Albans, Hertfordshire

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

5.44 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

11.00 μg/m³

155

255

425

605+

Ozone (O₃)

32.12 ppb

201

201+

Sulfur Dioxide (SO₂)

0.38 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.74 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.01 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

St Albans, Hertfordshire

Get Live Pollen Counts

St Albans, Hertfordshire

Scroll To Air Quality Map

Track live St Albans, Hertfordshire air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-27T23:00:00.000Z	44 \| good	8.433 \| good	21.446 \| good	25.263 \| good	0.537 \| good	19.482 \| good	0.002 \| good
2026-03-28T00:00:00.000Z	38 \| good	6.675 \| good	20.747 \| good	27.287 \| good	0.446 \| good	7.264 \| good	0.273 \| good
2026-03-28T01:00:00.000Z	44 \| good	8.334 \| good	18.527 \| good	27.009 \| good	0.43 \| good	6.332 \| good	0.23 \| good
2026-03-28T02:00:00.000Z	44 \| good	8.334 \| good	18.527 \| good	28.779 \| good	0.391 \| good	5.858 \| good	0.217 \| good
2026-03-28T03:00:00.000Z	44 \| good	8.307 \| good	18.393 \| good	29.083 \| good	0.391 \| good	6.052 \| good	0.209 \| good
2026-03-28T04:00:00.000Z	44 \| good	8.307 \| good	18.393 \| good	30.547 \| good	0.382 \| good	5.886 \| good	0.203 \| good
2026-03-28T05:00:00.000Z	44 \| good	8.307 \| good	18.393 \| good	31.048 \| good	0.382 \| good	5.398 \| good	0.2 \| good
2026-03-28T06:00:00.000Z	33 \| good	6.114 \| good	14.759 \| good	31.587 \| good	0.382 \| good	2.437 \| good	0.198 \| good
2026-03-28T07:00:00.000Z	44 \| good	8.307 \| good	17.866 \| good	32.104 \| good	0.525 \| good	5.769 \| good	0.002 \| good
2026-03-28T08:00:00.000Z	44 \| good	7.848 \| good	17.596 \| good	32.1 \| good	0.346 \| good	6.095 \| good	0.002 \| good
2026-03-28T09:00:00.000Z	44 \| good	7.848 \| good	17.596 \| good	31.467 \| good	0.397 \| good	5.782 \| good	0.002 \| good
2026-03-28T10:00:00.000Z	44 \| good	7.754 \| good	17.192 \| good	31.498 \| good	0.371 \| good	5.711 \| good	0.002 \| good
2026-03-28T11:00:00.000Z	44 \| good	7.727 \| good	17.058 \| good	32.044 \| good	0.346 \| good	5.355 \| good	0.002 \| good
2026-03-28T12:00:00.000Z	44 \| good	7.659 \| good	16.788 \| good	32.28 \| good	0.368 \| good	5.369 \| good	0.002 \| good
2026-03-28T13:00:00.000Z	44 \| good	7.592 \| good	16.519 \| good	32.846 \| good	0.346 \| good	5.46 \| good	0.002 \| good
2026-03-28T14:00:00.000Z	44 \| good	7.525 \| good	15.858 \| good	33.949 \| good	0.346 \| good	5.34 \| good	0.002 \| good
2026-03-28T15:00:00.000Z	38 \| good	7.498 \| good	15.588 \| good	32.904 \| good	0.346 \| good	5.46 \| good	0.002 \| good
2026-03-28T16:00:00.000Z	38 \| good	7.498 \| good	15.588 \| good	36.394 \| good	0.37 \| good	5.502 \| good	0.002 \| good
2026-03-28T17:00:00.000Z	44 \| good	7.525 \| good	15.723 \| good	36.331 \| good	0.371 \| good	5.369 \| good	0.002 \| good
2026-03-28T18:00:00.000Z	44 \| good	7.525 \| good	15.723 \| good	36.489 \| good	0.346 \| good	5.293 \| good	0.002 \| good
2026-03-28T19:00:00.000Z	44 \| good	7.525 \| good	15.723 \| good	37.977 \| good	0.368 \| good	5.711 \| good	0.002 \| good
2026-03-28T20:00:00.000Z	44 \| good	7.525 \| good	15.858 \| good	37.74 \| good	0.346 \| good	6.455 \| good	0.002 \| good
2026-03-28T21:00:00.000Z	44 \| good	7.565 \| good	15.992 \| good	37.132 \| good	0.346 \| good	6.783 \| good	0.002 \| good
2026-03-28T22:00:00.000Z	44 \| good	7.525 \| good	15.858 \| good	37.641 \| good	0.346 \| good	5.815 \| good	0.002 \| good
2026-03-28T23:00:00.000Z	44 \| good	7.525 \| good	15.466 \| good	36.015 \| good	0.346 \| good	6.199 \| good	0.002 \| good
2026-03-29T00:00:00.000Z	35 \| good	5.728 \| good	18.309 \| good	38.242 \| good	0.437 \| good	7.758 \| good	0.266 \| good
2026-03-29T01:00:00.000Z	33 \| good	6.365 \| good	11.918 \| good	35.82 \| good	0.382 \| good	8.627 \| good	0.264 \| good
2026-03-29T02:00:00.000Z	33 \| good	5.973 \| good	11.918 \| good	33.53 \| good	0.382 \| good	8.239 \| good	0.247 \| good
2026-03-29T03:00:00.000Z	33 \| good	6.365 \| good	11.918 \| good	30.683 \| good	0.382 \| good	8.497 \| good	0.299 \| good
2026-03-29T04:00:00.000Z	33 \| good	5.973 \| good	11.918 \| good	28.771 \| good	0.382 \| good	8.31 \| good	0.285 \| good
2026-03-29T05:00:00.000Z	33 \| good	5.973 \| good	11.918 \| good	25.001 \| good	0.339 \| good	7.916 \| good	0.002 \| good
2026-03-29T06:00:00.000Z	33 \| good	5.973 \| good	11.918 \| good	25.576 \| good	0.339 \| good	8.597 \| good	0.002 \| good
2026-03-29T07:00:00.000Z	33 \| good	5.973 \| good	11.526 \| good	24.595 \| good	0.362 \| good	9.67 \| good	0.002 \| good
2026-03-29T08:00:00.000Z	33 \| good	5.973 \| good	11.66 \| good	24.285 \| good	0.363 \| good	10.712 \| good	0.002 \| good
2026-03-29T09:00:00.000Z	33 \| good	5.973 \| good	11.66 \| good	21.782 \| good	0.365 \| good	10 \| good	0.003 \| good
2026-03-29T10:00:00.000Z	33 \| good	5.973 \| good	11.526 \| good	21.398 \| good	0.362 \| good	9.877 \| good	0.002 \| good
2026-03-29T11:00:00.000Z	33 \| good	5.973 \| good	11.526 \| good	23.662 \| good	0.364 \| good	9.043 \| good	0.002 \| good
2026-03-29T12:00:00.000Z	33 \| good	5.946 \| good	11.391 \| good	24.869 \| good	0.338 \| good	8 \| good	0.002 \| good
2026-03-29T13:00:00.000Z	33 \| good	5.946 \| good	11.391 \| good	24.987 \| good	0.338 \| good	8 \| good	0.002 \| good
2026-03-29T14:00:00.000Z	33 \| good	6.338 \| good	11.783 \| good	26.487 \| good	0.49 \| good	7.62 \| good	0.002 \| good
2026-03-29T15:00:00.000Z	33 \| good	6.338 \| good	11.783 \| good	27.577 \| good	0.338 \| good	7.324 \| good	0.002 \| good
2026-03-29T16:00:00.000Z	33 \| good	6.297 \| good	11.256 \| good	29.097 \| good	0.339 \| good	7.532 \| good	0.002 \| good
2026-03-29T17:00:00.000Z	33 \| good	6.297 \| good	11.256 \| good	30.808 \| good	0.338 \| good	7.532 \| good	0.002 \| good
2026-03-29T18:00:00.000Z	33 \| good	5.878 \| good	11.122 \| good	31.705 \| good	0.338 \| good	7.578 \| good	0.002 \| good
2026-03-29T19:00:00.000Z	33 \| good	5.878 \| good	11.122 \| good	32.407 \| good	0.338 \| good	7.792 \| good	0.002 \| good
2026-03-29T20:00:00.000Z	33 \| good	5.851 \| good	10.987 \| good	33.194 \| good	0.365 \| good	8.01 \| good	0.003 \| good
2026-03-29T21:00:00.000Z	33 \| good	5.811 \| good	10.852 \| good	32.039 \| good	0.364 \| good	7.801 \| good	0.002 \| good
2026-03-29T22:00:00.000Z	30 \| good	5.437 \| good	10.998 \| good	32.115 \| good	0.378 \| good	5.736 \| good	0.005 \| good
2026-03-29T23:00:00.000Z	37 \| good	6.055 \| good	9.726 \| good	40.366 \| good	0.279 \| good	3.1 \| good	0.128 \| good
2026-03-30T00:00:00.000Z	37 \| good	5.854 \| good	10.22 \| good	40.27 \| good	0.252 \| good	2.881 \| good	0.123 \| good
2026-03-30T01:00:00.000Z	36 \| good	5.538 \| good	10.251 \| good	38.783 \| good	0.254 \| good	2.489 \| good	0.117 \| good
2026-03-30T02:00:00.000Z	35 \| good	5.476 \| good	10.656 \| good	38.488 \| good	0.252 \| good	2.052 \| good	0.116 \| good
2026-03-30T03:00:00.000Z	35 \| good	5.37 \| good	11.374 \| good	38.087 \| good	0.264 \| good	2.055 \| good	0.116 \| good
2026-03-30T04:00:00.000Z	34 \| good	5.398 \| good	12.366 \| good	37.34 \| good	0.278 \| good	2.129 \| good	0.116 \| good
2026-03-30T05:00:00.000Z	34 \| good	5.864 \| good	13.797 \| good	36.781 \| good	0.306 \| good	2.236 \| good	0.115 \| good
2026-03-30T06:00:00.000Z	38 \| good	6.651 \| good	14.792 \| good	35.853 \| good	0.33 \| good	3.151 \| good	0.118 \| good
2026-03-30T07:00:00.000Z	38 \| good	7.243 \| good	14.796 \| good	36.32 \| good	0.324 \| good	4.144 \| good	0.121 \| good
2026-03-30T08:00:00.000Z	39 \| good	6.348 \| good	11.678 \| good	41.836 \| good	0.375 \| good	3.266 \| good	0.12 \| good
2026-03-30T09:00:00.000Z	39 \| good	5.304 \| good	11.654 \| good	42.294 \| good	0.259 \| good	2.459 \| good	0.119 \| good
2026-03-30T10:00:00.000Z	41 \| good	5.065 \| good	12.775 \| good	44.162 \| good	0.22 \| good	2.125 \| good	0.12 \| good
2026-03-30T11:00:00.000Z	44 \| good	5.198 \| good	12.487 \| good	48.014 \| good	0.194 \| good	1.982 \| good	0.122 \| good
2026-03-30T12:00:00.000Z	43 \| good	5.058 \| good	12.105 \| good	46.194 \| good	0.215 \| good	1.948 \| good	0.121 \| good
2026-03-30T13:00:00.000Z	44 \| good	4.762 \| good	11.498 \| good	48.326 \| good	0.211 \| good	1.819 \| good	0.121 \| good
2026-03-30T14:00:00.000Z	45 \| good	4.567 \| good	10.916 \| good	49.491 \| good	0.215 \| good	1.815 \| good	0.121 \| good
2026-03-30T15:00:00.000Z	47 \| good	4.443 \| good	10.623 \| good	50.828 \| good	0.221 \| good	2.081 \| good	0.122 \| good
2026-03-30T16:00:00.000Z	47 \| good	4.675 \| good	10.463 \| good	51.112 \| good	0.234 \| good	2.604 \| good	0.126 \| good
2026-03-30T17:00:00.000Z	46 \| good	4.957 \| good	10.242 \| good	49.602 \| good	0.271 \| good	3.209 \| good	0.131 \| good
2026-03-30T18:00:00.000Z	44 \| good	5.292 \| good	10.049 \| good	46.553 \| good	0.319 \| good	6.252 \| good	0.134 \| good
2026-03-30T19:00:00.000Z	40 \| good	5.749 \| good	10.014 \| good	42.652 \| good	0.441 \| good	6.299 \| good	0.135 \| good
2026-03-30T20:00:00.000Z	39 \| good	6.288 \| good	10.596 \| good	41.757 \| good	0.546 \| good	6.186 \| good	0.134 \| good
2026-03-30T21:00:00.000Z	38 \| good	6.818 \| good	10.546 \| good	40.826 \| good	0.456 \| good	6.135 \| good	0.135 \| good
2026-03-30T22:00:00.000Z	38 \| good	7.377 \| good	10.945 \| good	39.242 \| good	0.457 \| good	5.628 \| good	0.136 \| good
2026-03-30T23:00:00.000Z	44 \| good	7.687 \| good	11.313 \| good	36.542 \| good	0.458 \| good	6.58 \| good	0.137 \| good
2026-03-31T00:00:00.000Z	44 \| good	8.202 \| good	12.564 \| good	33.517 \| good	0.436 \| good	6.274 \| good	0.135 \| good
2026-03-31T01:00:00.000Z	49 \| good	8.748 \| good	13.597 \| good	31.888 \| good	0.386 \| good	5.653 \| good	0.135 \| good
2026-03-31T02:00:00.000Z	44 \| good	8.145 \| good	13.13 \| good	30.99 \| good	0.351 \| good	4.744 \| good	0.135 \| good
2026-03-31T03:00:00.000Z	38 \| good	7.077 \| good	13.392 \| good	30.705 \| good	0.352 \| good	4.056 \| good	0.132 \| good
2026-03-31T04:00:00.000Z	38 \| good	7.148 \| good	13.469 \| good	30.412 \| good	0.357 \| good	3.852 \| good	0.132 \| good
2026-03-31T05:00:00.000Z	38 \| good	7.373 \| good	13.076 \| good	28.508 \| good	0.402 \| good	4.219 \| good	0.132 \| good
2026-03-31T06:00:00.000Z	38 \| good	7.349 \| good	12.918 \| good	25.657 \| good	0.524 \| good	5.768 \| good	0.135 \| good
2026-03-31T07:00:00.000Z	38 \| good	6.951 \| good	13.041 \| good	22.027 \| good	0.501 \| good	8.274 \| good	0.144 \| good
2026-03-31T08:00:00.000Z	33 \| good	6.142 \| good	11.792 \| good	25.233 \| good	0.581 \| good	9.096 \| good	0.146 \| good
2026-03-31T09:00:00.000Z	33 \| good	6.439 \| good	9.727 \| good	25.461 \| good	0.433 \| good	7.981 \| good	0.141 \| good
2026-03-31T10:00:00.000Z	33 \| good	5.782 \| good	8.41 \| good	25.861 \| good	0.349 \| good	5.5 \| good	0.133 \| good
2026-03-31T11:00:00.000Z	33 \| good	5.761 \| good	7.618 \| good	28.025 \| good	0.292 \| good	4.482 \| good	0.128 \| good
2026-03-31T12:00:00.000Z	28 \| good	5.365 \| good	6.641 \| good	30.114 \| good	0.227 \| good	4.197 \| good	0.126 \| good
2026-03-31T13:00:00.000Z	27 \| good	5.335 \| good	6.483 \| good	29.488 \| good	0.222 \| good	4.423 \| good	0.127 \| good
2026-03-31T14:00:00.000Z	28 \| good	4.242 \| good	6.701 \| good	30.274 \| good	0.21 \| good	4.258 \| good	0.125 \| good
2026-03-31T15:00:00.000Z	29 \| good	4.058 \| good	6.742 \| good	31.052 \| good	0.198 \| good	3.673 \| good	0.124 \| good
2026-03-31T16:00:00.000Z	28 \| good	4.427 \| good	6.622 \| good	30.399 \| good	0.213 \| good	4.028 \| good	0.12 \| good
2026-03-31T17:00:00.000Z	27 \| good	4.647 \| good	7.354 \| good	28.907 \| good	0.271 \| good	5.136 \| good	0.123 \| good
2026-03-31T18:00:00.000Z	33 \| good	6.17 \| good	9.24 \| good	25.654 \| good	0.476 \| good	8.653 \| good	0.138 \| good
2026-03-31T19:00:00.000Z	38 \| good	7.365 \| good	10.711 \| good	18.601 \| good	0.696 \| good	12.358 \| good	0.146 \| good
2026-03-31T20:00:00.000Z	49 \| good	9.066 \| good	13.299 \| good	15.665 \| good	0.807 \| good	14.401 \| good	0.153 \| good
2026-03-31T21:00:00.000Z	52 \| moderate	9.959 \| good	13.658 \| good	14.384 \| good	0.881 \| good	14.163 \| good	0.155 \| good
2026-03-31T22:00:00.000Z	52 \| moderate	9.807 \| good	13.402 \| good	15.517 \| good	0.818 \| good	13.683 \| good	0.159 \| good

St Albans

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St Albans, Hertfordshire air quality map: Real-time AQI near you

0.01ppm

How accurate is Hertfordshire, UK air quality data?

Air quality measurements for Hertfordshire, UK meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.

Source: Ambee Data Sources

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Frequently asked questions

How frequently is the air quality data for St Albans, Hertfordshire updated?

Air quality data for St Albans, Hertfordshire is updated on an hourly basis.

When did St Albans, Hertfordshire experience the worst air quality in the last 24 hours?

The worst air quality in St Albans, Hertfordshire was recorded at 11:00:00 on 2026-03-28.

When did St Albans, Hertfordshire have its best air quality in the last 24 hours?

The best air quality in St Albans, Hertfordshire was recorded at 09:00:00 on 2026-03-29.

What is the real-time air quality index for St Albans, Hertfordshire?

The real-time air quality index in St Albans, Hertfordshire is 30, currently categorized as Good.

Which pollutant is found most often in St Albans, Hertfordshire?

The most common pollutant in St Albans, Hertfordshire is O3.

What can I do if the air quality in St Albans, Hertfordshire is poor?

If the air quality in St Albans, Hertfordshire is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in St Albans, Hertfordshire?

The measured PM_2.5 levels in St Albans, Hertfordshire at present are 5.437 μg/m³.

What are the current PM₁₀ levels at St Albans, Hertfordshire?

The current PM₁₀ levels in St Albans, Hertfordshire are 10.998 μg/m³.

What are the current carbon monoxide (CO) levels at St Albans, Hertfordshire?

The current carbon monoxide (CO) level in St Albans, Hertfordshire is 0.005 ppm.

What are the current sulfur dioxide (SO₂) levels at St Albans, Hertfordshire?

The current sulfur dioxide (SO₂) levels in St Albans, Hertfordshire are 0.378 ppb.

What are the current ozone (O₃) levels at St Albans, Hertfordshire?

The current ozone (O₃) levels at St Albans, Hertfordshire is 32.115 ppm.

What are the current nitrogen dioxide (NO₂) levels at St Albans, Hertfordshire?

The current nitrogen dioxide (NO₂) levels at St Albans, Hertfordshire is 5.736 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-27T23:00:00.000Z	44 \| good	8.433 \| good	21.446 \| good	25.263 \| good	0.537 \| good	19.482 \| good	0.002 \| good
2026-03-28T00:00:00.000Z	38 \| good	6.675 \| good	20.747 \| good	27.287 \| good	0.446 \| good	7.264 \| good	0.273 \| good
2026-03-28T01:00:00.000Z	44 \| good	8.334 \| good	18.527 \| good	27.009 \| good	0.43 \| good	6.332 \| good	0.23 \| good
2026-03-28T02:00:00.000Z	44 \| good	8.334 \| good	18.527 \| good	28.779 \| good	0.391 \| good	5.858 \| good	0.217 \| good
2026-03-28T03:00:00.000Z	44 \| good	8.307 \| good	18.393 \| good	29.083 \| good	0.391 \| good	6.052 \| good	0.209 \| good
2026-03-28T04:00:00.000Z	44 \| good	8.307 \| good	18.393 \| good	30.547 \| good	0.382 \| good	5.886 \| good	0.203 \| good
2026-03-28T05:00:00.000Z	44 \| good	8.307 \| good	18.393 \| good	31.048 \| good	0.382 \| good	5.398 \| good	0.2 \| good
2026-03-28T06:00:00.000Z	33 \| good	6.114 \| good	14.759 \| good	31.587 \| good	0.382 \| good	2.437 \| good	0.198 \| good
2026-03-28T07:00:00.000Z	44 \| good	8.307 \| good	17.866 \| good	32.104 \| good	0.525 \| good	5.769 \| good	0.002 \| good
2026-03-28T08:00:00.000Z	44 \| good	7.848 \| good	17.596 \| good	32.1 \| good	0.346 \| good	6.095 \| good	0.002 \| good
2026-03-28T09:00:00.000Z	44 \| good	7.848 \| good	17.596 \| good	31.467 \| good	0.397 \| good	5.782 \| good	0.002 \| good
2026-03-28T10:00:00.000Z	44 \| good	7.754 \| good	17.192 \| good	31.498 \| good	0.371 \| good	5.711 \| good	0.002 \| good
2026-03-28T11:00:00.000Z	44 \| good	7.727 \| good	17.058 \| good	32.044 \| good	0.346 \| good	5.355 \| good	0.002 \| good
2026-03-28T12:00:00.000Z	44 \| good	7.659 \| good	16.788 \| good	32.28 \| good	0.368 \| good	5.369 \| good	0.002 \| good
2026-03-28T13:00:00.000Z	44 \| good	7.592 \| good	16.519 \| good	32.846 \| good	0.346 \| good	5.46 \| good	0.002 \| good
2026-03-28T14:00:00.000Z	44 \| good	7.525 \| good	15.858 \| good	33.949 \| good	0.346 \| good	5.34 \| good	0.002 \| good
2026-03-28T15:00:00.000Z	38 \| good	7.498 \| good	15.588 \| good	32.904 \| good	0.346 \| good	5.46 \| good	0.002 \| good
2026-03-28T16:00:00.000Z	38 \| good	7.498 \| good	15.588 \| good	36.394 \| good	0.37 \| good	5.502 \| good	0.002 \| good
2026-03-28T17:00:00.000Z	44 \| good	7.525 \| good	15.723 \| good	36.331 \| good	0.371 \| good	5.369 \| good	0.002 \| good
2026-03-28T18:00:00.000Z	44 \| good	7.525 \| good	15.723 \| good	36.489 \| good	0.346 \| good	5.293 \| good	0.002 \| good
2026-03-28T19:00:00.000Z	44 \| good	7.525 \| good	15.723 \| good	37.977 \| good	0.368 \| good	5.711 \| good	0.002 \| good
2026-03-28T20:00:00.000Z	44 \| good	7.525 \| good	15.858 \| good	37.74 \| good	0.346 \| good	6.455 \| good	0.002 \| good
2026-03-28T21:00:00.000Z	44 \| good	7.565 \| good	15.992 \| good	37.132 \| good	0.346 \| good	6.783 \| good	0.002 \| good
2026-03-28T22:00:00.000Z	44 \| good	7.525 \| good	15.858 \| good	37.641 \| good	0.346 \| good	5.815 \| good	0.002 \| good
2026-03-28T23:00:00.000Z	44 \| good	7.525 \| good	15.466 \| good	36.015 \| good	0.346 \| good	6.199 \| good	0.002 \| good
2026-03-29T00:00:00.000Z	35 \| good	5.728 \| good	18.309 \| good	38.242 \| good	0.437 \| good	7.758 \| good	0.266 \| good
2026-03-29T01:00:00.000Z	33 \| good	6.365 \| good	11.918 \| good	35.82 \| good	0.382 \| good	8.627 \| good	0.264 \| good
2026-03-29T02:00:00.000Z	33 \| good	5.973 \| good	11.918 \| good	33.53 \| good	0.382 \| good	8.239 \| good	0.247 \| good
2026-03-29T03:00:00.000Z	33 \| good	6.365 \| good	11.918 \| good	30.683 \| good	0.382 \| good	8.497 \| good	0.299 \| good
2026-03-29T04:00:00.000Z	33 \| good	5.973 \| good	11.918 \| good	28.771 \| good	0.382 \| good	8.31 \| good	0.285 \| good
2026-03-29T05:00:00.000Z	33 \| good	5.973 \| good	11.918 \| good	25.001 \| good	0.339 \| good	7.916 \| good	0.002 \| good
2026-03-29T06:00:00.000Z	33 \| good	5.973 \| good	11.918 \| good	25.576 \| good	0.339 \| good	8.597 \| good	0.002 \| good
2026-03-29T07:00:00.000Z	33 \| good	5.973 \| good	11.526 \| good	24.595 \| good	0.362 \| good	9.67 \| good	0.002 \| good
2026-03-29T08:00:00.000Z	33 \| good	5.973 \| good	11.66 \| good	24.285 \| good	0.363 \| good	10.712 \| good	0.002 \| good
2026-03-29T09:00:00.000Z	33 \| good	5.973 \| good	11.66 \| good	21.782 \| good	0.365 \| good	10 \| good	0.003 \| good
2026-03-29T10:00:00.000Z	33 \| good	5.973 \| good	11.526 \| good	21.398 \| good	0.362 \| good	9.877 \| good	0.002 \| good
2026-03-29T11:00:00.000Z	33 \| good	5.973 \| good	11.526 \| good	23.662 \| good	0.364 \| good	9.043 \| good	0.002 \| good
2026-03-29T12:00:00.000Z	33 \| good	5.946 \| good	11.391 \| good	24.869 \| good	0.338 \| good	8 \| good	0.002 \| good
2026-03-29T13:00:00.000Z	33 \| good	5.946 \| good	11.391 \| good	24.987 \| good	0.338 \| good	8 \| good	0.002 \| good
2026-03-29T14:00:00.000Z	33 \| good	6.338 \| good	11.783 \| good	26.487 \| good	0.49 \| good	7.62 \| good	0.002 \| good
2026-03-29T15:00:00.000Z	33 \| good	6.338 \| good	11.783 \| good	27.577 \| good	0.338 \| good	7.324 \| good	0.002 \| good
2026-03-29T16:00:00.000Z	33 \| good	6.297 \| good	11.256 \| good	29.097 \| good	0.339 \| good	7.532 \| good	0.002 \| good
2026-03-29T17:00:00.000Z	33 \| good	6.297 \| good	11.256 \| good	30.808 \| good	0.338 \| good	7.532 \| good	0.002 \| good
2026-03-29T18:00:00.000Z	33 \| good	5.878 \| good	11.122 \| good	31.705 \| good	0.338 \| good	7.578 \| good	0.002 \| good
2026-03-29T19:00:00.000Z	33 \| good	5.878 \| good	11.122 \| good	32.407 \| good	0.338 \| good	7.792 \| good	0.002 \| good
2026-03-29T20:00:00.000Z	33 \| good	5.851 \| good	10.987 \| good	33.194 \| good	0.365 \| good	8.01 \| good	0.003 \| good
2026-03-29T21:00:00.000Z	33 \| good	5.811 \| good	10.852 \| good	32.039 \| good	0.364 \| good	7.801 \| good	0.002 \| good
2026-03-29T22:00:00.000Z	30 \| good	5.437 \| good	10.998 \| good	32.115 \| good	0.378 \| good	5.736 \| good	0.005 \| good
2026-03-29T23:00:00.000Z	37 \| good	6.055 \| good	9.726 \| good	40.366 \| good	0.279 \| good	3.1 \| good	0.128 \| good
2026-03-30T00:00:00.000Z	37 \| good	5.854 \| good	10.22 \| good	40.27 \| good	0.252 \| good	2.881 \| good	0.123 \| good
2026-03-30T01:00:00.000Z	36 \| good	5.538 \| good	10.251 \| good	38.783 \| good	0.254 \| good	2.489 \| good	0.117 \| good
2026-03-30T02:00:00.000Z	35 \| good	5.476 \| good	10.656 \| good	38.488 \| good	0.252 \| good	2.052 \| good	0.116 \| good
2026-03-30T03:00:00.000Z	35 \| good	5.37 \| good	11.374 \| good	38.087 \| good	0.264 \| good	2.055 \| good	0.116 \| good
2026-03-30T04:00:00.000Z	34 \| good	5.398 \| good	12.366 \| good	37.34 \| good	0.278 \| good	2.129 \| good	0.116 \| good
2026-03-30T05:00:00.000Z	34 \| good	5.864 \| good	13.797 \| good	36.781 \| good	0.306 \| good	2.236 \| good	0.115 \| good
2026-03-30T06:00:00.000Z	38 \| good	6.651 \| good	14.792 \| good	35.853 \| good	0.33 \| good	3.151 \| good	0.118 \| good
2026-03-30T07:00:00.000Z	38 \| good	7.243 \| good	14.796 \| good	36.32 \| good	0.324 \| good	4.144 \| good	0.121 \| good
2026-03-30T08:00:00.000Z	39 \| good	6.348 \| good	11.678 \| good	41.836 \| good	0.375 \| good	3.266 \| good	0.12 \| good
2026-03-30T09:00:00.000Z	39 \| good	5.304 \| good	11.654 \| good	42.294 \| good	0.259 \| good	2.459 \| good	0.119 \| good
2026-03-30T10:00:00.000Z	41 \| good	5.065 \| good	12.775 \| good	44.162 \| good	0.22 \| good	2.125 \| good	0.12 \| good
2026-03-30T11:00:00.000Z	44 \| good	5.198 \| good	12.487 \| good	48.014 \| good	0.194 \| good	1.982 \| good	0.122 \| good
2026-03-30T12:00:00.000Z	43 \| good	5.058 \| good	12.105 \| good	46.194 \| good	0.215 \| good	1.948 \| good	0.121 \| good
2026-03-30T13:00:00.000Z	44 \| good	4.762 \| good	11.498 \| good	48.326 \| good	0.211 \| good	1.819 \| good	0.121 \| good
2026-03-30T14:00:00.000Z	45 \| good	4.567 \| good	10.916 \| good	49.491 \| good	0.215 \| good	1.815 \| good	0.121 \| good
2026-03-30T15:00:00.000Z	47 \| good	4.443 \| good	10.623 \| good	50.828 \| good	0.221 \| good	2.081 \| good	0.122 \| good
2026-03-30T16:00:00.000Z	47 \| good	4.675 \| good	10.463 \| good	51.112 \| good	0.234 \| good	2.604 \| good	0.126 \| good
2026-03-30T17:00:00.000Z	46 \| good	4.957 \| good	10.242 \| good	49.602 \| good	0.271 \| good	3.209 \| good	0.131 \| good
2026-03-30T18:00:00.000Z	44 \| good	5.292 \| good	10.049 \| good	46.553 \| good	0.319 \| good	6.252 \| good	0.134 \| good
2026-03-30T19:00:00.000Z	40 \| good	5.749 \| good	10.014 \| good	42.652 \| good	0.441 \| good	6.299 \| good	0.135 \| good
2026-03-30T20:00:00.000Z	39 \| good	6.288 \| good	10.596 \| good	41.757 \| good	0.546 \| good	6.186 \| good	0.134 \| good
2026-03-30T21:00:00.000Z	38 \| good	6.818 \| good	10.546 \| good	40.826 \| good	0.456 \| good	6.135 \| good	0.135 \| good
2026-03-30T22:00:00.000Z	38 \| good	7.377 \| good	10.945 \| good	39.242 \| good	0.457 \| good	5.628 \| good	0.136 \| good
2026-03-30T23:00:00.000Z	44 \| good	7.687 \| good	11.313 \| good	36.542 \| good	0.458 \| good	6.58 \| good	0.137 \| good
2026-03-31T00:00:00.000Z	44 \| good	8.202 \| good	12.564 \| good	33.517 \| good	0.436 \| good	6.274 \| good	0.135 \| good
2026-03-31T01:00:00.000Z	49 \| good	8.748 \| good	13.597 \| good	31.888 \| good	0.386 \| good	5.653 \| good	0.135 \| good
2026-03-31T02:00:00.000Z	44 \| good	8.145 \| good	13.13 \| good	30.99 \| good	0.351 \| good	4.744 \| good	0.135 \| good
2026-03-31T03:00:00.000Z	38 \| good	7.077 \| good	13.392 \| good	30.705 \| good	0.352 \| good	4.056 \| good	0.132 \| good
2026-03-31T04:00:00.000Z	38 \| good	7.148 \| good	13.469 \| good	30.412 \| good	0.357 \| good	3.852 \| good	0.132 \| good
2026-03-31T05:00:00.000Z	38 \| good	7.373 \| good	13.076 \| good	28.508 \| good	0.402 \| good	4.219 \| good	0.132 \| good
2026-03-31T06:00:00.000Z	38 \| good	7.349 \| good	12.918 \| good	25.657 \| good	0.524 \| good	5.768 \| good	0.135 \| good
2026-03-31T07:00:00.000Z	38 \| good	6.951 \| good	13.041 \| good	22.027 \| good	0.501 \| good	8.274 \| good	0.144 \| good
2026-03-31T08:00:00.000Z	33 \| good	6.142 \| good	11.792 \| good	25.233 \| good	0.581 \| good	9.096 \| good	0.146 \| good
2026-03-31T09:00:00.000Z	33 \| good	6.439 \| good	9.727 \| good	25.461 \| good	0.433 \| good	7.981 \| good	0.141 \| good
2026-03-31T10:00:00.000Z	33 \| good	5.782 \| good	8.41 \| good	25.861 \| good	0.349 \| good	5.5 \| good	0.133 \| good
2026-03-31T11:00:00.000Z	33 \| good	5.761 \| good	7.618 \| good	28.025 \| good	0.292 \| good	4.482 \| good	0.128 \| good
2026-03-31T12:00:00.000Z	28 \| good	5.365 \| good	6.641 \| good	30.114 \| good	0.227 \| good	4.197 \| good	0.126 \| good
2026-03-31T13:00:00.000Z	27 \| good	5.335 \| good	6.483 \| good	29.488 \| good	0.222 \| good	4.423 \| good	0.127 \| good
2026-03-31T14:00:00.000Z	28 \| good	4.242 \| good	6.701 \| good	30.274 \| good	0.21 \| good	4.258 \| good	0.125 \| good
2026-03-31T15:00:00.000Z	29 \| good	4.058 \| good	6.742 \| good	31.052 \| good	0.198 \| good	3.673 \| good	0.124 \| good
2026-03-31T16:00:00.000Z	28 \| good	4.427 \| good	6.622 \| good	30.399 \| good	0.213 \| good	4.028 \| good	0.12 \| good
2026-03-31T17:00:00.000Z	27 \| good	4.647 \| good	7.354 \| good	28.907 \| good	0.271 \| good	5.136 \| good	0.123 \| good
2026-03-31T18:00:00.000Z	33 \| good	6.17 \| good	9.24 \| good	25.654 \| good	0.476 \| good	8.653 \| good	0.138 \| good
2026-03-31T19:00:00.000Z	38 \| good	7.365 \| good	10.711 \| good	18.601 \| good	0.696 \| good	12.358 \| good	0.146 \| good
2026-03-31T20:00:00.000Z	49 \| good	9.066 \| good	13.299 \| good	15.665 \| good	0.807 \| good	14.401 \| good	0.153 \| good
2026-03-31T21:00:00.000Z	52 \| moderate	9.959 \| good	13.658 \| good	14.384 \| good	0.881 \| good	14.163 \| good	0.155 \| good
2026-03-31T22:00:00.000Z	52 \| moderate	9.807 \| good	13.402 \| good	15.517 \| good	0.818 \| good	13.683 \| good	0.159 \| good

Real-time air quality index in St Albans, Hertfordshire today

Common air pollutants in St Albans, Hertfordshire

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live St Albans, Hertfordshire air quality forecast and history

Empower business decisions with accurate air quality data

St Albans, Hertfordshire air quality map: Real-time AQI near you

Air quality in nearby cities

Abbots Langley, Hertfordshire

Hemel Hempstead, Hertfordshire

Harpenden, Hertfordshire

Hatfield, Hertfordshire

Watford, Hertfordshire

Welwyn Garden City, Hertfordshire

How accurate is Hertfordshire, UK air quality data?

Air quality levels in UK

Frequently asked questions

How frequently is the air quality data for St Albans, Hertfordshire updated?

When did St Albans, Hertfordshire experience the worst air quality in the last 24 hours?

When did St Albans, Hertfordshire have its best air quality in the last 24 hours?

What is the real-time air quality index for St Albans, Hertfordshire?

Which pollutant is found most often in St Albans, Hertfordshire?

What can I do if the air quality in St Albans, Hertfordshire is poor?

What are the current PM2.5 levels in St Albans, Hertfordshire?

What are the current PM10 levels at St Albans, Hertfordshire?

What are the current carbon monoxide (CO) levels at St Albans, Hertfordshire?

What are the current sulfur dioxide (SO2) levels at St Albans, Hertfordshire?

What are the current ozone (O3) levels at St Albans, Hertfordshire?

What are the current nitrogen dioxide (NO2) levels at St Albans, Hertfordshire?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What are the current PM_2.5 levels in St Albans, Hertfordshire?

What are the current PM₁₀ levels at St Albans, Hertfordshire?

What are the current sulfur dioxide (SO₂) levels at St Albans, Hertfordshire?

What are the current ozone (O₃) levels at St Albans, Hertfordshire?

What are the current nitrogen dioxide (NO₂) levels at St Albans, Hertfordshire?