What is the current concentration of PM10 in St Helens, Merseyside?

The current PM10 concentration at St Helens, Merseyside is 16.703 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in St Helens, Merseyside?

The current sulfur dioxide (SO2) concentration at St Helens, Merseyside is 1.172 ppb.

What is the current concentration of ozone (O3) in St Helens, Merseyside?

The current ozone (O3) concentration at St Helens, Merseyside is 21.52 ppm.

What is the current concentration of nitrogen dioxide (NO2) in St Helens, Merseyside?

The current nitrogen dioxide (NO2) concentration at St Helens, Merseyside is 12.694 ppb.

St Helens, Merseyside live air quality index now

Q: What is the current concentration of PM2.5 in St Helens, Merseyside?

The current PM2.5 concentration at St Helens, Merseyside is 9.817 μg/m3.

Stay updated with real-time air quality in St Helens, Merseyside 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

St Helens, Merseyside

Last updated: ... (Local time)

Major air pollutants in St Helens, Merseyside

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

9.82 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

16.70 μg/m³

155

255

425

605+

Ozone (O₃)

21.52 ppb

201

201+

Sulfur Dioxide (SO₂)

1.17 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

12.69 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.17 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

St Helens, Merseyside

Get Live Pollen Counts

St Helens, Merseyside

Scroll To Air Quality Map

Track live St Helens, Merseyside air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-27T00:00:00.000Z	26 \| good	2.6 \| good	12 \| good	28.034 \| good	0.451 \| good	7.103 \| good	0.305 \| good
2025-12-27T01:00:00.000Z	24 \| good	2.6 \| good	12 \| good	25.705 \| good	0.382 \| good	11.35 \| good	0.581 \| good
2025-12-27T02:00:00.000Z	23 \| good	2.6 \| good	12 \| good	25.204 \| good	0.382 \| good	6.305 \| good	0.228 \| good
2025-12-27T03:00:00.000Z	25 \| good	2.6 \| good	12 \| good	26.513 \| good	0.42 \| good	6.509 \| good	0.241 \| good
2025-12-27T04:00:00.000Z	25 \| good	2.6 \| good	12 \| good	26.885 \| good	0.399 \| good	4.451 \| good	0.188 \| good
2025-12-27T05:00:00.000Z	24 \| good	2.4 \| good	11 \| good	26 \| good	0.399 \| good	4.973 \| good	0.169 \| good
2025-12-27T06:00:00.000Z	26 \| good	2.4 \| good	11 \| good	28.125 \| good	0.399 \| good	5.84 \| good	0.03 \| good
2025-12-27T07:00:00.000Z	25 \| good	2.1 \| good	10 \| good	27.421 \| good	0.382 \| good	6.052 \| good	0.043 \| good
2025-12-27T08:00:00.000Z	23 \| good	2.1 \| good	10 \| good	24.986 \| good	0.401 \| good	10.295 \| good	0.054 \| good
2025-12-27T09:00:00.000Z	26 \| good	2.1 \| good	10 \| good	27.537 \| good	0.4 \| good	11.286 \| good	0.041 \| good
2025-12-27T10:00:00.000Z	26 \| good	1.9 \| good	9 \| good	27.633 \| good	0.401 \| good	15.021 \| good	0.031 \| good
2025-12-27T11:00:00.000Z	27 \| good	1.9 \| good	9 \| good	29.157 \| good	0.4 \| good	14.053 \| good	0.038 \| good
2025-12-27T12:00:00.000Z	28 \| good	1.9 \| good	9 \| good	30.305 \| good	0.44 \| good	10.15 \| good	0.039 \| good
2025-12-27T13:00:00.000Z	26 \| good	1.9 \| good	9 \| good	27.787 \| good	0.603 \| good	16.73 \| good	0.039 \| good
2025-12-27T14:00:00.000Z	27 \| good	1.6 \| good	8 \| good	28.564 \| good	0.447 \| good	5.026 \| good	0.054 \| good
2025-12-27T15:00:00.000Z	24 \| good	1.4 \| good	7 \| good	26.431 \| good	0.459 \| good	8.312 \| good	0.058 \| good
2025-12-27T16:00:00.000Z	29 \| good	1.4 \| good	7 \| good	31.033 \| good	0.4 \| good	11.029 \| good	0.073 \| good
2025-12-27T17:00:00.000Z	25 \| good	1.4 \| good	7 \| good	27.122 \| good	0.382 \| good	8.661 \| good	0.109 \| good
2025-12-27T18:00:00.000Z	26 \| good	1.4 \| good	7 \| good	28.259 \| good	0.4 \| good	13.844 \| good	0.141 \| good
2025-12-27T19:00:00.000Z	28 \| good	1.4 \| good	7 \| good	29.712 \| good	0.431 \| good	20.086 \| good	0.21 \| good
2025-12-27T20:00:00.000Z	28 \| good	1.4 \| good	6 \| good	30.219 \| good	0.401 \| good	14.392 \| good	0.283 \| good
2025-12-27T21:00:00.000Z	31 \| good	1.4 \| good	6 \| good	32.511 \| good	0.405 \| good	14.519 \| good	0.212 \| good
2025-12-27T22:00:00.000Z	31 \| good	1.4 \| good	6 \| good	33.205 \| good	0.406 \| good	14.967 \| good	0.249 \| good
2025-12-27T23:00:00.000Z	31 \| good	1.2 \| good	5 \| good	32.888 \| good	0.405 \| good	19.479 \| good	0.187 \| good
2025-12-28T00:00:00.000Z	30 \| good	1.2 \| good	5 \| good	32.387 \| good	0.401 \| good	4.105 \| good	1.101 \| good
2025-12-28T01:00:00.000Z	31 \| good	1.2 \| good	5 \| good	33.553 \| good	0.641 \| good	3.601 \| good	1.079 \| good
2025-12-28T02:00:00.000Z	32 \| good	1.2 \| good	5 \| good	34.701 \| good	0.433 \| good	4.19 \| good	1.237 \| good
2025-12-28T03:00:00.000Z	31 \| good	1.4 \| good	6 \| good	34.497 \| good	0.4 \| good	4.4 \| good	0.638 \| good
2025-12-28T04:00:00.000Z	29 \| good	1.4 \| good	6 \| good	31.38 \| good	0.4 \| good	3.703 \| good	0.678 \| good
2025-12-28T05:00:00.000Z	28 \| good	1.4 \| good	6 \| good	30.008 \| good	0.4 \| good	3.878 \| good	0.432 \| good
2025-12-28T06:00:00.000Z	27 \| good	1.4 \| good	6 \| good	29.415 \| good	0.401 \| good	3.278 \| good	0.058 \| good
2025-12-28T07:00:00.000Z	32 \| good	1.4 \| good	6 \| good	35.285 \| good	0.404 \| good	3.483 \| good	0.075 \| good
2025-12-28T08:00:00.000Z	33 \| good	5.678 \| good	15.879 \| good	20.209 \| good	0.85 \| good	10.449 \| good	0.15 \| good
2025-12-28T09:00:00.000Z	38 \| good	6.643 \| good	16.235 \| good	18.871 \| good	0.974 \| good	14.111 \| good	0.169 \| good
2025-12-28T10:00:00.000Z	33 \| good	6.06 \| good	15.915 \| good	19.317 \| good	1.117 \| good	15.639 \| good	0.175 \| good
2025-12-28T11:00:00.000Z	33 \| good	6.179 \| good	16.912 \| good	24.789 \| good	0.916 \| good	13.103 \| good	0.163 \| good
2025-12-28T12:00:00.000Z	29 \| good	4.588 \| good	13.816 \| good	30.929 \| good	0.734 \| good	9.887 \| good	0.14 \| good
2025-12-28T13:00:00.000Z	30 \| good	4.445 \| good	13.132 \| good	31.694 \| good	0.6 \| good	7.337 \| good	0.135 \| good
2025-12-28T14:00:00.000Z	28 \| good	4.254 \| good	11.95 \| good	29.86 \| good	0.561 \| good	7.756 \| good	0.138 \| good
2025-12-28T15:00:00.000Z	29 \| good	4.575 \| good	12.842 \| good	30.6 \| good	0.581 \| good	8.375 \| good	0.144 \| good
2025-12-28T16:00:00.000Z	27 \| good	5.087 \| good	15.808 \| good	27.739 \| good	0.637 \| good	9.472 \| good	0.146 \| good
2025-12-28T17:00:00.000Z	33 \| good	6.462 \| good	14.97 \| good	24.822 \| good	0.706 \| good	11.175 \| good	0.155 \| good
2025-12-28T18:00:00.000Z	38 \| good	7.181 \| good	13.146 \| good	26.659 \| good	0.975 \| good	12.164 \| good	0.168 \| good
2025-12-28T19:00:00.000Z	49 \| good	8.575 \| good	16.582 \| good	25.2 \| good	1.068 \| good	13.714 \| good	0.177 \| good
2025-12-28T20:00:00.000Z	52 \| moderate	9.775 \| good	16.492 \| good	23.532 \| good	1.101 \| good	14.258 \| good	0.172 \| good
2025-12-28T21:00:00.000Z	52 \| moderate	10.244 \| good	16.512 \| good	22.157 \| good	1.166 \| good	13.491 \| good	0.171 \| good
2025-12-28T22:00:00.000Z	52 \| moderate	9.846 \| good	16.731 \| good	21.548 \| good	1.167 \| good	12.689 \| good	0.169 \| good
2025-12-28T23:00:00.000Z	52 \| moderate	9.817 \| good	16.703 \| good	21.52 \| good	1.172 \| good	12.694 \| good	0.169 \| good
2025-12-29T00:00:00.000Z	49 \| good	9.486 \| good	16.818 \| good	24.938 \| good	1.016 \| good	11.325 \| good	0.158 \| good
2025-12-29T01:00:00.000Z	49 \| good	9.477 \| good	17.14 \| good	21.093 \| good	1.029 \| good	11.669 \| good	0.154 \| good
2025-12-29T02:00:00.000Z	49 \| good	9.411 \| good	17.306 \| good	19.834 \| good	1 \| good	11.848 \| good	0.151 \| good
2025-12-29T03:00:00.000Z	52 \| moderate	9.715 \| good	15.364 \| good	18.798 \| good	0.894 \| good	10.556 \| good	0.149 \| good
2025-12-29T04:00:00.000Z	52 \| moderate	10.258 \| good	15.069 \| good	18.142 \| good	0.815 \| good	9.5 \| good	0.149 \| good
2025-12-29T05:00:00.000Z	49 \| good	8.86 \| good	15.375 \| good	18.603 \| good	0.738 \| good	9.166 \| good	0.139 \| good
2025-12-29T06:00:00.000Z	44 \| good	8.235 \| good	14.979 \| good	17.642 \| good	0.885 \| good	9.801 \| good	0.143 \| good
2025-12-29T07:00:00.000Z	38 \| good	7.155 \| good	13.973 \| good	18.775 \| good	0.999 \| good	11.849 \| good	0.15 \| good
2025-12-29T08:00:00.000Z	49 \| good	8.763 \| good	13.282 \| good	16.17 \| good	1.316 \| good	16.978 \| good	0.164 \| good
2025-12-29T09:00:00.000Z	49 \| good	8.949 \| good	13.164 \| good	14.541 \| good	1.613 \| good	20.163 \| good	0.177 \| good
2025-12-29T10:00:00.000Z	44 \| good	8.36 \| good	12.802 \| good	15.66 \| good	1.594 \| good	19.025 \| good	0.179 \| good
2025-12-29T11:00:00.000Z	38 \| good	7.015 \| good	11.61 \| good	21.451 \| good	1.073 \| good	14.531 \| good	0.148 \| good
2025-12-29T12:00:00.000Z	33 \| good	5.709 \| good	9.181 \| good	28.575 \| good	0.718 \| good	8.038 \| good	0.135 \| good
2025-12-29T13:00:00.000Z	28 \| good	4.816 \| good	9.02 \| good	29.546 \| good	0.56 \| good	5.835 \| good	0.134 \| good
2025-12-29T14:00:00.000Z	27 \| good	4.203 \| good	10.612 \| good	29.139 \| good	0.54 \| good	7.774 \| good	0.146 \| good
2025-12-29T15:00:00.000Z	27 \| good	5.013 \| good	10.946 \| good	27.372 \| good	0.547 \| good	8.983 \| good	0.145 \| good
2025-12-29T16:00:00.000Z	33 \| good	6.145 \| good	12.934 \| good	20.949 \| good	0.762 \| good	14.174 \| good	0.156 \| good
2025-12-29T17:00:00.000Z	38 \| good	7.492 \| good	13.687 \| good	16.034 \| good	1.055 \| good	19.165 \| good	0.178 \| good
2025-12-29T18:00:00.000Z	52 \| moderate	10.412 \| good	15.702 \| good	14.268 \| good	1.237 \| good	20.976 \| good	0.198 \| good
2025-12-29T19:00:00.000Z	56 \| moderate	11.9 \| good	16.883 \| good	12.646 \| good	1.359 \| good	20.603 \| good	0.216 \| good
2025-12-29T20:00:00.000Z	60 \| moderate	13.548 \| fine	18.598 \| good	8.823 \| good	1.33 \| good	19.885 \| good	0.214 \| good
2025-12-29T21:00:00.000Z	58 \| moderate	12.655 \| fine	18.667 \| good	11.797 \| good	1.435 \| good	19.116 \| good	0.19 \| good
2025-12-29T22:00:00.000Z	52 \| moderate	10.174 \| good	18.186 \| good	15.214 \| good	1.238 \| good	15.229 \| good	0.17 \| good
2025-12-29T23:00:00.000Z	49 \| good	8.693 \| good	14.097 \| good	17.637 \| good	1.021 \| good	12.519 \| good	0.161 \| good
2025-12-30T00:00:00.000Z	38 \| good	7.029 \| good	11.704 \| good	22.457 \| good	0.777 \| good	9.138 \| good	0.148 \| good
2025-12-30T01:00:00.000Z	33 \| good	5.878 \| good	10.64 \| good	25.118 \| good	0.58 \| good	7.136 \| good	0.142 \| good
2025-12-30T02:00:00.000Z	27 \| good	5.354 \| good	10.138 \| good	25.088 \| good	0.484 \| good	6.608 \| good	0.136 \| good
2025-12-30T03:00:00.000Z	27 \| good	4.622 \| good	10.523 \| good	24.338 \| good	0.435 \| good	5.723 \| good	0.135 \| good
2025-12-30T04:00:00.000Z	22 \| good	4.233 \| good	10.582 \| good	23.935 \| good	0.435 \| good	5.226 \| good	0.132 \| good
2025-12-30T05:00:00.000Z	22 \| good	4.457 \| good	10.916 \| good	24.065 \| good	0.496 \| good	5.676 \| good	0.131 \| good
2025-12-30T06:00:00.000Z	27 \| good	4.754 \| good	11.685 \| good	22.358 \| good	0.658 \| good	7.157 \| good	0.132 \| good
2025-12-30T07:00:00.000Z	27 \| good	5.372 \| good	12.513 \| good	20.006 \| good	0.808 \| good	9.5 \| good	0.141 \| good
2025-12-30T08:00:00.000Z	33 \| good	6.478 \| good	13.24 \| good	12.659 \| good	1.201 \| good	16.335 \| good	0.168 \| good
2025-12-30T09:00:00.000Z	38 \| good	6.744 \| good	13.637 \| good	8.45 \| good	1.566 \| good	22.228 \| good	0.182 \| good
2025-12-30T10:00:00.000Z	38 \| good	7.096 \| good	14.287 \| good	8.458 \| good	1.684 \| good	23.112 \| good	0.19 \| good
2025-12-30T11:00:00.000Z	38 \| good	6.657 \| good	14.147 \| good	19.013 \| good	1.288 \| good	19.756 \| good	0.182 \| good
2025-12-30T12:00:00.000Z	27 \| good	5.363 \| good	13.888 \| good	23.918 \| good	1.04 \| good	14.608 \| good	0.158 \| good
2025-12-30T13:00:00.000Z	27 \| good	5.181 \| good	12.926 \| good	26.302 \| good	0.979 \| good	10.342 \| good	0.153 \| good
2025-12-30T14:00:00.000Z	33 \| good	5.663 \| good	12.433 \| good	27.365 \| good	0.788 \| good	12.194 \| good	0.154 \| good
2025-12-30T15:00:00.000Z	38 \| good	6.587 \| good	13.298 \| good	25.843 \| good	0.721 \| good	13.643 \| good	0.171 \| good
2025-12-30T16:00:00.000Z	38 \| good	6.873 \| good	15.17 \| good	19.24 \| good	0.896 \| good	15.939 \| good	0.172 \| good
2025-12-30T17:00:00.000Z	44 \| good	7.962 \| good	16.982 \| good	16.348 \| good	1.149 \| good	21.361 \| good	0.191 \| good
2025-12-30T18:00:00.000Z	52 \| moderate	9.693 \| good	21.073 \| good	6.659 \| good	1.332 \| good	24.348 \| good	0.22 \| good
2025-12-30T19:00:00.000Z	58 \| moderate	12.964 \| fine	23.372 \| good	3.797 \| good	1.324 \| good	25.699 \| good	0.236 \| good
2025-12-30T20:00:00.000Z	66 \| moderate	16.567 \| fine	23.201 \| good	3.998 \| good	1.385 \| good	26.888 \| good	0.257 \| good
2025-12-30T21:00:00.000Z	69 \| moderate	18.808 \| fine	23.569 \| good	4.187 \| good	1.563 \| good	27.036 \| good	0.264 \| good
2025-12-30T22:00:00.000Z	66 \| moderate	16.544 \| fine	22.718 \| good	6.162 \| good	1.724 \| good	26.665 \| good	0.256 \| good
2025-12-30T23:00:00.000Z	64 \| moderate	16.302 \| fine	21.861 \| good	5.058 \| good	1.728 \| good	26.197 \| good	0.256 \| good

St Helens

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St Helens, Merseyside air quality map: Track AQI near you

0.16ppm

How accurate is Merseyside, UK air quality data?

Air quality data and pollutant measurements for Merseyside, UK adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.

Source: Ambee Data Sources

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Frequently asked questions

How often is the air quality data for St Helens, Merseyside updated?

The air quality for St Helens, Merseyside is updated every hour.

When was the worst air quality at St Helens, Merseyside in the last 24 hrs?

The worst air quality in St Helens, Merseyside in the last 24 hours was observed at 10:00:00 on 2025-12-28.

When was the best air quality at St Helens, Merseyside in the last 24 hrs?

In the last 24 hrs, the best air quality in St Helens, Merseyside was observed at 04:00:00 on 2025-12-28.

What is the current air quality in St Helens, Merseyside?

The current air quality in St Helens, Merseyside is 52, categorized as Moderate based on real-time data.

What pollutant is the most common in St Helens, Merseyside?

The most common pollutant in St Helens, Merseyside is PM2.5.

What should I do if the air quality in St Helens, Merseyside is poor?

If the air quality in St Helens, Merseyside is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in St Helens, Merseyside?

The current PM_2.5 concentration at St Helens, Merseyside is 9.817 μg/m³.

What is the current concentration of PM₁₀ in St Helens, Merseyside?

The current PM₁₀ concentration at St Helens, Merseyside is 16.703 μg/m³.

What is the current concentration of carbon monoxide (CO) in St Helens, Merseyside?

The current carbon monoxide (CO) concentration at St Helens, Merseyside is 0.169 ppm.

What is the current concentration of sulfur dioxide (SO₂) in St Helens, Merseyside?

The current sulfur dioxide (SO₂) concentration at St Helens, Merseyside is 1.172 ppb.

What is the current concentration of ozone (O₃) in St Helens, Merseyside?

The current ozone (O₃) concentration at St Helens, Merseyside is 21.52 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in St Helens, Merseyside?

The current nitrogen dioxide (NO₂) concentration at St Helens, Merseyside is 12.694 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-27T00:00:00.000Z	26 \| good	2.6 \| good	12 \| good	28.034 \| good	0.451 \| good	7.103 \| good	0.305 \| good
2025-12-27T01:00:00.000Z	24 \| good	2.6 \| good	12 \| good	25.705 \| good	0.382 \| good	11.35 \| good	0.581 \| good
2025-12-27T02:00:00.000Z	23 \| good	2.6 \| good	12 \| good	25.204 \| good	0.382 \| good	6.305 \| good	0.228 \| good
2025-12-27T03:00:00.000Z	25 \| good	2.6 \| good	12 \| good	26.513 \| good	0.42 \| good	6.509 \| good	0.241 \| good
2025-12-27T04:00:00.000Z	25 \| good	2.6 \| good	12 \| good	26.885 \| good	0.399 \| good	4.451 \| good	0.188 \| good
2025-12-27T05:00:00.000Z	24 \| good	2.4 \| good	11 \| good	26 \| good	0.399 \| good	4.973 \| good	0.169 \| good
2025-12-27T06:00:00.000Z	26 \| good	2.4 \| good	11 \| good	28.125 \| good	0.399 \| good	5.84 \| good	0.03 \| good
2025-12-27T07:00:00.000Z	25 \| good	2.1 \| good	10 \| good	27.421 \| good	0.382 \| good	6.052 \| good	0.043 \| good
2025-12-27T08:00:00.000Z	23 \| good	2.1 \| good	10 \| good	24.986 \| good	0.401 \| good	10.295 \| good	0.054 \| good
2025-12-27T09:00:00.000Z	26 \| good	2.1 \| good	10 \| good	27.537 \| good	0.4 \| good	11.286 \| good	0.041 \| good
2025-12-27T10:00:00.000Z	26 \| good	1.9 \| good	9 \| good	27.633 \| good	0.401 \| good	15.021 \| good	0.031 \| good
2025-12-27T11:00:00.000Z	27 \| good	1.9 \| good	9 \| good	29.157 \| good	0.4 \| good	14.053 \| good	0.038 \| good
2025-12-27T12:00:00.000Z	28 \| good	1.9 \| good	9 \| good	30.305 \| good	0.44 \| good	10.15 \| good	0.039 \| good
2025-12-27T13:00:00.000Z	26 \| good	1.9 \| good	9 \| good	27.787 \| good	0.603 \| good	16.73 \| good	0.039 \| good
2025-12-27T14:00:00.000Z	27 \| good	1.6 \| good	8 \| good	28.564 \| good	0.447 \| good	5.026 \| good	0.054 \| good
2025-12-27T15:00:00.000Z	24 \| good	1.4 \| good	7 \| good	26.431 \| good	0.459 \| good	8.312 \| good	0.058 \| good
2025-12-27T16:00:00.000Z	29 \| good	1.4 \| good	7 \| good	31.033 \| good	0.4 \| good	11.029 \| good	0.073 \| good
2025-12-27T17:00:00.000Z	25 \| good	1.4 \| good	7 \| good	27.122 \| good	0.382 \| good	8.661 \| good	0.109 \| good
2025-12-27T18:00:00.000Z	26 \| good	1.4 \| good	7 \| good	28.259 \| good	0.4 \| good	13.844 \| good	0.141 \| good
2025-12-27T19:00:00.000Z	28 \| good	1.4 \| good	7 \| good	29.712 \| good	0.431 \| good	20.086 \| good	0.21 \| good
2025-12-27T20:00:00.000Z	28 \| good	1.4 \| good	6 \| good	30.219 \| good	0.401 \| good	14.392 \| good	0.283 \| good
2025-12-27T21:00:00.000Z	31 \| good	1.4 \| good	6 \| good	32.511 \| good	0.405 \| good	14.519 \| good	0.212 \| good
2025-12-27T22:00:00.000Z	31 \| good	1.4 \| good	6 \| good	33.205 \| good	0.406 \| good	14.967 \| good	0.249 \| good
2025-12-27T23:00:00.000Z	31 \| good	1.2 \| good	5 \| good	32.888 \| good	0.405 \| good	19.479 \| good	0.187 \| good
2025-12-28T00:00:00.000Z	30 \| good	1.2 \| good	5 \| good	32.387 \| good	0.401 \| good	4.105 \| good	1.101 \| good
2025-12-28T01:00:00.000Z	31 \| good	1.2 \| good	5 \| good	33.553 \| good	0.641 \| good	3.601 \| good	1.079 \| good
2025-12-28T02:00:00.000Z	32 \| good	1.2 \| good	5 \| good	34.701 \| good	0.433 \| good	4.19 \| good	1.237 \| good
2025-12-28T03:00:00.000Z	31 \| good	1.4 \| good	6 \| good	34.497 \| good	0.4 \| good	4.4 \| good	0.638 \| good
2025-12-28T04:00:00.000Z	29 \| good	1.4 \| good	6 \| good	31.38 \| good	0.4 \| good	3.703 \| good	0.678 \| good
2025-12-28T05:00:00.000Z	28 \| good	1.4 \| good	6 \| good	30.008 \| good	0.4 \| good	3.878 \| good	0.432 \| good
2025-12-28T06:00:00.000Z	27 \| good	1.4 \| good	6 \| good	29.415 \| good	0.401 \| good	3.278 \| good	0.058 \| good
2025-12-28T07:00:00.000Z	32 \| good	1.4 \| good	6 \| good	35.285 \| good	0.404 \| good	3.483 \| good	0.075 \| good
2025-12-28T08:00:00.000Z	33 \| good	5.678 \| good	15.879 \| good	20.209 \| good	0.85 \| good	10.449 \| good	0.15 \| good
2025-12-28T09:00:00.000Z	38 \| good	6.643 \| good	16.235 \| good	18.871 \| good	0.974 \| good	14.111 \| good	0.169 \| good
2025-12-28T10:00:00.000Z	33 \| good	6.06 \| good	15.915 \| good	19.317 \| good	1.117 \| good	15.639 \| good	0.175 \| good
2025-12-28T11:00:00.000Z	33 \| good	6.179 \| good	16.912 \| good	24.789 \| good	0.916 \| good	13.103 \| good	0.163 \| good
2025-12-28T12:00:00.000Z	29 \| good	4.588 \| good	13.816 \| good	30.929 \| good	0.734 \| good	9.887 \| good	0.14 \| good
2025-12-28T13:00:00.000Z	30 \| good	4.445 \| good	13.132 \| good	31.694 \| good	0.6 \| good	7.337 \| good	0.135 \| good
2025-12-28T14:00:00.000Z	28 \| good	4.254 \| good	11.95 \| good	29.86 \| good	0.561 \| good	7.756 \| good	0.138 \| good
2025-12-28T15:00:00.000Z	29 \| good	4.575 \| good	12.842 \| good	30.6 \| good	0.581 \| good	8.375 \| good	0.144 \| good
2025-12-28T16:00:00.000Z	27 \| good	5.087 \| good	15.808 \| good	27.739 \| good	0.637 \| good	9.472 \| good	0.146 \| good
2025-12-28T17:00:00.000Z	33 \| good	6.462 \| good	14.97 \| good	24.822 \| good	0.706 \| good	11.175 \| good	0.155 \| good
2025-12-28T18:00:00.000Z	38 \| good	7.181 \| good	13.146 \| good	26.659 \| good	0.975 \| good	12.164 \| good	0.168 \| good
2025-12-28T19:00:00.000Z	49 \| good	8.575 \| good	16.582 \| good	25.2 \| good	1.068 \| good	13.714 \| good	0.177 \| good
2025-12-28T20:00:00.000Z	52 \| moderate	9.775 \| good	16.492 \| good	23.532 \| good	1.101 \| good	14.258 \| good	0.172 \| good
2025-12-28T21:00:00.000Z	52 \| moderate	10.244 \| good	16.512 \| good	22.157 \| good	1.166 \| good	13.491 \| good	0.171 \| good
2025-12-28T22:00:00.000Z	52 \| moderate	9.846 \| good	16.731 \| good	21.548 \| good	1.167 \| good	12.689 \| good	0.169 \| good
2025-12-28T23:00:00.000Z	52 \| moderate	9.817 \| good	16.703 \| good	21.52 \| good	1.172 \| good	12.694 \| good	0.169 \| good
2025-12-29T00:00:00.000Z	49 \| good	9.486 \| good	16.818 \| good	24.938 \| good	1.016 \| good	11.325 \| good	0.158 \| good
2025-12-29T01:00:00.000Z	49 \| good	9.477 \| good	17.14 \| good	21.093 \| good	1.029 \| good	11.669 \| good	0.154 \| good
2025-12-29T02:00:00.000Z	49 \| good	9.411 \| good	17.306 \| good	19.834 \| good	1 \| good	11.848 \| good	0.151 \| good
2025-12-29T03:00:00.000Z	52 \| moderate	9.715 \| good	15.364 \| good	18.798 \| good	0.894 \| good	10.556 \| good	0.149 \| good
2025-12-29T04:00:00.000Z	52 \| moderate	10.258 \| good	15.069 \| good	18.142 \| good	0.815 \| good	9.5 \| good	0.149 \| good
2025-12-29T05:00:00.000Z	49 \| good	8.86 \| good	15.375 \| good	18.603 \| good	0.738 \| good	9.166 \| good	0.139 \| good
2025-12-29T06:00:00.000Z	44 \| good	8.235 \| good	14.979 \| good	17.642 \| good	0.885 \| good	9.801 \| good	0.143 \| good
2025-12-29T07:00:00.000Z	38 \| good	7.155 \| good	13.973 \| good	18.775 \| good	0.999 \| good	11.849 \| good	0.15 \| good
2025-12-29T08:00:00.000Z	49 \| good	8.763 \| good	13.282 \| good	16.17 \| good	1.316 \| good	16.978 \| good	0.164 \| good
2025-12-29T09:00:00.000Z	49 \| good	8.949 \| good	13.164 \| good	14.541 \| good	1.613 \| good	20.163 \| good	0.177 \| good
2025-12-29T10:00:00.000Z	44 \| good	8.36 \| good	12.802 \| good	15.66 \| good	1.594 \| good	19.025 \| good	0.179 \| good
2025-12-29T11:00:00.000Z	38 \| good	7.015 \| good	11.61 \| good	21.451 \| good	1.073 \| good	14.531 \| good	0.148 \| good
2025-12-29T12:00:00.000Z	33 \| good	5.709 \| good	9.181 \| good	28.575 \| good	0.718 \| good	8.038 \| good	0.135 \| good
2025-12-29T13:00:00.000Z	28 \| good	4.816 \| good	9.02 \| good	29.546 \| good	0.56 \| good	5.835 \| good	0.134 \| good
2025-12-29T14:00:00.000Z	27 \| good	4.203 \| good	10.612 \| good	29.139 \| good	0.54 \| good	7.774 \| good	0.146 \| good
2025-12-29T15:00:00.000Z	27 \| good	5.013 \| good	10.946 \| good	27.372 \| good	0.547 \| good	8.983 \| good	0.145 \| good
2025-12-29T16:00:00.000Z	33 \| good	6.145 \| good	12.934 \| good	20.949 \| good	0.762 \| good	14.174 \| good	0.156 \| good
2025-12-29T17:00:00.000Z	38 \| good	7.492 \| good	13.687 \| good	16.034 \| good	1.055 \| good	19.165 \| good	0.178 \| good
2025-12-29T18:00:00.000Z	52 \| moderate	10.412 \| good	15.702 \| good	14.268 \| good	1.237 \| good	20.976 \| good	0.198 \| good
2025-12-29T19:00:00.000Z	56 \| moderate	11.9 \| good	16.883 \| good	12.646 \| good	1.359 \| good	20.603 \| good	0.216 \| good
2025-12-29T20:00:00.000Z	60 \| moderate	13.548 \| fine	18.598 \| good	8.823 \| good	1.33 \| good	19.885 \| good	0.214 \| good
2025-12-29T21:00:00.000Z	58 \| moderate	12.655 \| fine	18.667 \| good	11.797 \| good	1.435 \| good	19.116 \| good	0.19 \| good
2025-12-29T22:00:00.000Z	52 \| moderate	10.174 \| good	18.186 \| good	15.214 \| good	1.238 \| good	15.229 \| good	0.17 \| good
2025-12-29T23:00:00.000Z	49 \| good	8.693 \| good	14.097 \| good	17.637 \| good	1.021 \| good	12.519 \| good	0.161 \| good
2025-12-30T00:00:00.000Z	38 \| good	7.029 \| good	11.704 \| good	22.457 \| good	0.777 \| good	9.138 \| good	0.148 \| good
2025-12-30T01:00:00.000Z	33 \| good	5.878 \| good	10.64 \| good	25.118 \| good	0.58 \| good	7.136 \| good	0.142 \| good
2025-12-30T02:00:00.000Z	27 \| good	5.354 \| good	10.138 \| good	25.088 \| good	0.484 \| good	6.608 \| good	0.136 \| good
2025-12-30T03:00:00.000Z	27 \| good	4.622 \| good	10.523 \| good	24.338 \| good	0.435 \| good	5.723 \| good	0.135 \| good
2025-12-30T04:00:00.000Z	22 \| good	4.233 \| good	10.582 \| good	23.935 \| good	0.435 \| good	5.226 \| good	0.132 \| good
2025-12-30T05:00:00.000Z	22 \| good	4.457 \| good	10.916 \| good	24.065 \| good	0.496 \| good	5.676 \| good	0.131 \| good
2025-12-30T06:00:00.000Z	27 \| good	4.754 \| good	11.685 \| good	22.358 \| good	0.658 \| good	7.157 \| good	0.132 \| good
2025-12-30T07:00:00.000Z	27 \| good	5.372 \| good	12.513 \| good	20.006 \| good	0.808 \| good	9.5 \| good	0.141 \| good
2025-12-30T08:00:00.000Z	33 \| good	6.478 \| good	13.24 \| good	12.659 \| good	1.201 \| good	16.335 \| good	0.168 \| good
2025-12-30T09:00:00.000Z	38 \| good	6.744 \| good	13.637 \| good	8.45 \| good	1.566 \| good	22.228 \| good	0.182 \| good
2025-12-30T10:00:00.000Z	38 \| good	7.096 \| good	14.287 \| good	8.458 \| good	1.684 \| good	23.112 \| good	0.19 \| good
2025-12-30T11:00:00.000Z	38 \| good	6.657 \| good	14.147 \| good	19.013 \| good	1.288 \| good	19.756 \| good	0.182 \| good
2025-12-30T12:00:00.000Z	27 \| good	5.363 \| good	13.888 \| good	23.918 \| good	1.04 \| good	14.608 \| good	0.158 \| good
2025-12-30T13:00:00.000Z	27 \| good	5.181 \| good	12.926 \| good	26.302 \| good	0.979 \| good	10.342 \| good	0.153 \| good
2025-12-30T14:00:00.000Z	33 \| good	5.663 \| good	12.433 \| good	27.365 \| good	0.788 \| good	12.194 \| good	0.154 \| good
2025-12-30T15:00:00.000Z	38 \| good	6.587 \| good	13.298 \| good	25.843 \| good	0.721 \| good	13.643 \| good	0.171 \| good
2025-12-30T16:00:00.000Z	38 \| good	6.873 \| good	15.17 \| good	19.24 \| good	0.896 \| good	15.939 \| good	0.172 \| good
2025-12-30T17:00:00.000Z	44 \| good	7.962 \| good	16.982 \| good	16.348 \| good	1.149 \| good	21.361 \| good	0.191 \| good
2025-12-30T18:00:00.000Z	52 \| moderate	9.693 \| good	21.073 \| good	6.659 \| good	1.332 \| good	24.348 \| good	0.22 \| good
2025-12-30T19:00:00.000Z	58 \| moderate	12.964 \| fine	23.372 \| good	3.797 \| good	1.324 \| good	25.699 \| good	0.236 \| good
2025-12-30T20:00:00.000Z	66 \| moderate	16.567 \| fine	23.201 \| good	3.998 \| good	1.385 \| good	26.888 \| good	0.257 \| good
2025-12-30T21:00:00.000Z	69 \| moderate	18.808 \| fine	23.569 \| good	4.187 \| good	1.563 \| good	27.036 \| good	0.264 \| good
2025-12-30T22:00:00.000Z	66 \| moderate	16.544 \| fine	22.718 \| good	6.162 \| good	1.724 \| good	26.665 \| good	0.256 \| good
2025-12-30T23:00:00.000Z	64 \| moderate	16.302 \| fine	21.861 \| good	5.058 \| good	1.728 \| good	26.197 \| good	0.256 \| good

St Helens, Merseyside live air quality index now

Major air pollutants in St Helens, Merseyside

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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St Helens, Merseyside air quality map: Track AQI near you

Air quality in nearby cities

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How accurate is Merseyside, UK air quality data?

Air quality levels in UK

Frequently asked questions

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When was the worst air quality at St Helens, Merseyside in the last 24 hrs?

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What should I do if the air quality in St Helens, Merseyside is poor?

What is the current concentration of PM2.5 in St Helens, Merseyside?

What is the current concentration of PM10 in St Helens, Merseyside?

What is the current concentration of carbon monoxide (CO) in St Helens, Merseyside?

What is the current concentration of sulfur dioxide (SO2) in St Helens, Merseyside?

What is the current concentration of ozone (O3) in St Helens, Merseyside?

What is the current concentration of nitrogen dioxide (NO2) in St Helens, Merseyside?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the current concentration of PM_2.5 in St Helens, Merseyside?

What is the current concentration of PM₁₀ in St Helens, Merseyside?

What is the current concentration of sulfur dioxide (SO₂) in St Helens, Merseyside?

What is the current concentration of ozone (O₃) in St Helens, Merseyside?

What is the current concentration of nitrogen dioxide (NO₂) in St Helens, Merseyside?