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

The current PM10 concentration at St Helens, Merseyside is 13.975 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 0.722 ppb.

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

The current ozone (O3) concentration at St Helens, Merseyside is 25.505 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 26.243 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 3.128 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)

Good

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)

3.13 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

13.97 μg/m³

155

255

425

605+

Ozone (O₃)

25.50 ppb

201

201+

Sulfur Dioxide (SO₂)

0.72 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

26.24 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.31 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
2026-09-26T23:00:00.000Z	27 \| good	4.663 \| good	13.816 \| good	20.407 \| good	0.703 \| good	18.339 \| good	0.297 \| good
2026-09-27T00:00:00.000Z	27 \| good	4.909 \| good	14.19 \| good	17.077 \| good	0.504 \| good	16.45 \| good	0.227 \| good
2026-09-27T01:00:00.000Z	27 \| good	4.931 \| good	14.315 \| good	13.585 \| good	0.386 \| good	15.228 \| good	0.229 \| good
2026-09-27T02:00:00.000Z	27 \| good	5.056 \| good	14.193 \| good	11.861 \| good	0.909 \| good	10.784 \| good	0.212 \| good
2026-09-27T03:00:00.000Z	27 \| good	4.906 \| good	14.203 \| good	10.551 \| good	0.588 \| good	7.919 \| good	0.217 \| good
2026-09-27T04:00:00.000Z	38 \| good	6.792 \| good	13.419 \| good	11.784 \| good	0.578 \| good	8.653 \| good	0.205 \| good
2026-09-27T05:00:00.000Z	38 \| good	6.787 \| good	13.245 \| good	11.693 \| good	0.58 \| good	7.772 \| good	0.061 \| good
2026-09-27T06:00:00.000Z	38 \| good	6.86 \| good	12.759 \| good	13.064 \| good	0.382 \| good	7.74 \| good	0.058 \| good
2026-09-27T07:00:00.000Z	38 \| good	6.934 \| good	14.27 \| good	14.691 \| good	0.579 \| good	6.658 \| good	0.059 \| good
2026-09-27T08:00:00.000Z	33 \| good	6.393 \| good	14.181 \| good	16.277 \| good	0.583 \| good	4.953 \| good	0.062 \| good
2026-09-27T09:00:00.000Z	38 \| good	6.787 \| good	13.037 \| good	17.663 \| good	0.44 \| good	4.542 \| good	0.06 \| good
2026-09-27T10:00:00.000Z	38 \| good	6.558 \| good	12.44 \| good	18.924 \| good	0.465 \| good	5.094 \| good	0.072 \| good
2026-09-27T11:00:00.000Z	38 \| good	6.522 \| good	12.152 \| good	20.179 \| good	0.661 \| good	5.515 \| good	0.058 \| good
2026-09-27T12:00:00.000Z	33 \| good	6.477 \| good	14.641 \| good	21.606 \| good	1.449 \| good	5.304 \| good	0.055 \| good
2026-09-27T13:00:00.000Z	38 \| good	6.801 \| good	12.22 \| good	23.99 \| good	1.238 \| good	4.562 \| good	0.052 \| good
2026-09-27T14:00:00.000Z	38 \| good	6.967 \| good	15.037 \| good	26.229 \| good	1.317 \| good	4.77 \| good	0.053 \| good
2026-09-27T15:00:00.000Z	27 \| good	5.175 \| good	14.409 \| good	28.101 \| good	1.317 \| good	10.476 \| good	0.056 \| good
2026-09-27T16:00:00.000Z	27 \| good	5.063 \| good	13.995 \| good	29.046 \| good	0.894 \| good	11.385 \| good	0.055 \| good
2026-09-27T17:00:00.000Z	28 \| good	5.032 \| good	13.563 \| good	30.139 \| good	0.663 \| good	9.517 \| good	0.055 \| good
2026-09-27T18:00:00.000Z	30 \| good	5.016 \| good	13.679 \| good	31.678 \| good	0.608 \| good	3.472 \| good	0.066 \| good
2026-09-27T19:00:00.000Z	31 \| good	5.077 \| good	13.708 \| good	33.151 \| good	0.605 \| good	5.285 \| good	0.077 \| good
2026-09-27T20:00:00.000Z	31 \| good	4.693 \| good	13.798 \| good	33.573 \| good	0.609 \| good	6.382 \| good	0.087 \| good
2026-09-27T21:00:00.000Z	31 \| good	4.502 \| good	12.772 \| good	32.947 \| good	0.613 \| good	7.75 \| good	0.107 \| good
2026-09-27T22:00:00.000Z	30 \| good	4.541 \| good	12.637 \| good	31.97 \| good	0.712 \| good	8.063 \| good	0.09 \| good
2026-09-27T23:00:00.000Z	29 \| good	4.347 \| good	12.47 \| good	30.858 \| good	0.588 \| good	9.091 \| good	0.098 \| good
2026-09-28T00:00:00.000Z	27 \| good	4.285 \| good	12.242 \| good	29.131 \| good	0.581 \| good	8.897 \| good	0.255 \| good
2026-09-28T01:00:00.000Z	25 \| good	4.066 \| good	11.635 \| good	26.623 \| good	0.607 \| good	6.488 \| good	0.18 \| good
2026-09-28T02:00:00.000Z	22 \| good	3.835 \| good	11.51 \| good	23.985 \| good	0.576 \| good	6.059 \| good	0.226 \| good
2026-09-28T03:00:00.000Z	22 \| good	3.767 \| good	11.185 \| good	22.342 \| good	0.792 \| good	7.286 \| good	0.214 \| good
2026-09-28T04:00:00.000Z	27 \| good	5.01 \| good	10.343 \| good	18.195 \| good	0.793 \| good	6.982 \| good	0.218 \| good
2026-09-28T05:00:00.000Z	27 \| good	5.05 \| good	11.68 \| good	16.656 \| good	0.575 \| good	7.799 \| good	0.197 \| good
2026-09-28T06:00:00.000Z	27 \| good	5.024 \| good	12.26 \| good	15.527 \| good	0.657 \| good	10.188 \| good	0.21 \| good
2026-09-28T07:00:00.000Z	27 \| good	5.015 \| good	10.382 \| good	11.833 \| good	1.439 \| good	16.926 \| good	0.279 \| good
2026-09-28T08:00:00.000Z	22 \| good	3.813 \| good	10.436 \| good	8.094 \| good	0.936 \| good	12.95 \| good	0.264 \| good
2026-09-28T09:00:00.000Z	22 \| good	4.037 \| good	10.927 \| good	7.832 \| good	0.699 \| good	14.421 \| good	0.235 \| good
2026-09-28T10:00:00.000Z	22 \| good	4.014 \| good	11.224 \| good	5.932 \| good	0.704 \| good	13.624 \| good	0.221 \| good
2026-09-28T11:00:00.000Z	22 \| good	3.965 \| good	11.605 \| good	7.834 \| good	0.744 \| good	13.897 \| good	0.212 \| good
2026-09-28T12:00:00.000Z	22 \| good	3.846 \| good	10.943 \| good	7.481 \| good	2.606 \| good	12.04 \| good	0.188 \| good
2026-09-28T13:00:00.000Z	22 \| good	4.067 \| good	12.033 \| good	8.576 \| good	1.869 \| good	13.399 \| good	0.165 \| good
2026-09-28T14:00:00.000Z	22 \| good	3.737 \| good	12.146 \| good	12.144 \| good	1.737 \| good	12.471 \| good	0.162 \| good
2026-09-28T15:00:00.000Z	22 \| good	3.693 \| good	12.023 \| good	16.583 \| good	1.646 \| good	6.555 \| good	0.156 \| good
2026-09-28T16:00:00.000Z	22 \| good	3.749 \| good	12.054 \| good	19.494 \| good	0.73 \| good	7.006 \| good	0.153 \| good
2026-09-28T17:00:00.000Z	22 \| good	3.733 \| good	12.153 \| good	21.7 \| good	0.437 \| good	11.372 \| good	0.169 \| good
2026-09-28T18:00:00.000Z	23 \| good	3.848 \| good	12.068 \| good	25.372 \| good	0.458 \| good	10.533 \| good	0.217 \| good
2026-09-28T19:00:00.000Z	24 \| good	4.279 \| good	12.853 \| good	25.666 \| good	0.469 \| good	15.129 \| good	0.253 \| good
2026-09-28T20:00:00.000Z	27 \| good	4.255 \| good	12.804 \| good	29.043 \| good	0.87 \| good	22.412 \| good	0.324 \| good
2026-09-28T21:00:00.000Z	24 \| good	4.124 \| good	13.184 \| good	25.84 \| good	0.744 \| good	23.743 \| good	0.312 \| good
2026-09-28T22:00:00.000Z	33 \| good	5.788 \| good	12.301 \| good	26.085 \| good	0.983 \| good	18.141 \| good	0.352 \| good
2026-09-28T22:00:00.000Z	25 \| good	3.128 \| good	13.975 \| good	25.505 \| good	0.722 \| good	26.243 \| good	0.312 \| good
2026-09-28T23:00:00.000Z	52 \| moderate	9.56 \| good	16.2 \| good	14.289 \| good	0.735 \| good	15.669 \| good	0.188 \| good
2026-09-29T00:00:00.000Z	49 \| good	8.73 \| good	14.736 \| good	19.468 \| good	0.608 \| good	11.385 \| good	0.174 \| good
2026-09-29T01:00:00.000Z	38 \| good	7.258 \| good	12.484 \| good	22.376 \| good	0.54 \| good	7.758 \| good	0.164 \| good
2026-09-29T02:00:00.000Z	33 \| good	6.324 \| good	10.182 \| good	25.6 \| good	0.424 \| good	5.674 \| good	0.154 \| good
2026-09-29T03:00:00.000Z	33 \| good	5.916 \| good	8.1 \| good	26.003 \| good	0.31 \| good	4.378 \| good	0.145 \| good
2026-09-29T04:00:00.000Z	27 \| good	4.941 \| good	6.971 \| good	25.638 \| good	0.266 \| good	3.955 \| good	0.142 \| good
2026-09-29T05:00:00.000Z	24 \| good	4.39 \| good	6.622 \| good	25.986 \| good	0.255 \| good	4.079 \| good	0.141 \| good
2026-09-29T06:00:00.000Z	25 \| good	4.371 \| good	7.407 \| good	26.692 \| good	0.286 \| good	4.829 \| good	0.143 \| good
2026-09-29T07:00:00.000Z	27 \| good	5.08 \| good	7.795 \| good	27.249 \| good	0.316 \| good	6.643 \| good	0.148 \| good
2026-09-29T08:00:00.000Z	25 \| good	4.345 \| good	7.621 \| good	27.268 \| good	0.322 \| good	6.892 \| good	0.147 \| good
2026-09-29T09:00:00.000Z	26 \| good	3.898 \| good	6.673 \| good	27.792 \| good	0.276 \| good	5.929 \| good	0.141 \| good
2026-09-29T10:00:00.000Z	27 \| good	3.464 \| good	6.569 \| good	28.525 \| good	0.247 \| good	4.944 \| good	0.137 \| good
2026-09-29T11:00:00.000Z	29 \| good	3.619 \| good	5.731 \| good	30.715 \| good	0.198 \| good	4.599 \| good	0.134 \| good
2026-09-29T12:00:00.000Z	30 \| good	3.669 \| good	5.762 \| good	31.873 \| good	0.188 \| good	3.593 \| good	0.134 \| good
2026-09-29T13:00:00.000Z	31 \| good	4.08 \| good	6.086 \| good	32.628 \| good	0.2 \| good	3.538 \| good	0.136 \| good
2026-09-29T14:00:00.000Z	31 \| good	4.726 \| good	7.278 \| good	34.174 \| good	0.191 \| good	4.03 \| good	0.141 \| good
2026-09-29T15:00:00.000Z	31 \| good	5.463 \| good	8.33 \| good	34.368 \| good	0.218 \| good	4.651 \| good	0.144 \| good
2026-09-29T16:00:00.000Z	33 \| good	6.179 \| good	9.694 \| good	35.335 \| good	0.268 \| good	4.709 \| good	0.149 \| good
2026-09-29T17:00:00.000Z	38 \| good	7.467 \| good	11.045 \| good	36.68 \| good	0.293 \| good	5.39 \| good	0.152 \| good
2026-09-29T18:00:00.000Z	44 \| good	8.188 \| good	11.822 \| good	37.641 \| good	0.324 \| good	6.2 \| good	0.154 \| good
2026-09-29T19:00:00.000Z	44 \| good	7.889 \| good	12.318 \| good	38.053 \| good	0.359 \| good	6.084 \| good	0.155 \| good
2026-09-29T20:00:00.000Z	44 \| good	8.105 \| good	12.652 \| good	37.312 \| good	0.373 \| good	5.537 \| good	0.156 \| good
2026-09-29T21:00:00.000Z	44 \| good	8.392 \| good	13.137 \| good	36.592 \| good	0.377 \| good	5.352 \| good	0.156 \| good
2026-09-29T22:00:00.000Z	49 \| good	8.791 \| good	13.431 \| good	35.598 \| good	0.365 \| good	5.098 \| good	0.152 \| good
2026-09-29T23:00:00.000Z	52 \| moderate	9.696 \| good	13.165 \| good	34.564 \| good	0.318 \| good	4.631 \| good	0.147 \| good
2026-09-30T00:00:00.000Z	44 \| good	8.451 \| good	11.548 \| good	34.675 \| good	0.304 \| good	4.093 \| good	0.144 \| good
2026-09-30T01:00:00.000Z	38 \| good	6.977 \| good	10.271 \| good	35.78 \| good	0.271 \| good	3.227 \| good	0.137 \| good
2026-09-30T02:00:00.000Z	33 \| good	6.469 \| good	9.092 \| good	36.134 \| good	0.245 \| good	2.616 \| good	0.132 \| good
2026-09-30T03:00:00.000Z	33 \| good	6.293 \| good	9.178 \| good	35.408 \| good	0.235 \| good	2.408 \| good	0.13 \| good
2026-09-30T04:00:00.000Z	33 \| good	6.428 \| good	9.937 \| good	34.365 \| good	0.222 \| good	2.409 \| good	0.128 \| good
2026-09-30T05:00:00.000Z	38 \| good	6.595 \| good	8.944 \| good	33.161 \| good	0.203 \| good	2.624 \| good	0.126 \| good
2026-09-30T06:00:00.000Z	33 \| good	6.241 \| good	8.632 \| good	31.68 \| good	0.197 \| good	3.045 \| good	0.125 \| good
2026-09-30T07:00:00.000Z	33 \| good	6.086 \| good	7.256 \| good	29.685 \| good	0.211 \| good	3.801 \| good	0.127 \| good
2026-09-30T08:00:00.000Z	27 \| good	5.433 \| good	6.436 \| good	28.543 \| good	0.208 \| good	4.899 \| good	0.128 \| good
2026-09-30T09:00:00.000Z	27 \| good	4.302 \| good	6.335 \| good	29.159 \| good	0.205 \| good	4.184 \| good	0.119 \| good
2026-09-30T10:00:00.000Z	28 \| good	4.55 \| good	6.532 \| good	30.447 \| good	0.203 \| good	3.048 \| good	0.116 \| good
2026-09-30T11:00:00.000Z	30 \| good	4.006 \| good	7.197 \| good	31.743 \| good	0.205 \| good	2.462 \| good	0.119 \| good
2026-09-30T12:00:00.000Z	31 \| good	4.271 \| good	8.12 \| good	33.176 \| good	0.22 \| good	2.135 \| good	0.125 \| good
2026-09-30T13:00:00.000Z	32 \| good	4.203 \| good	8.893 \| good	34.863 \| good	0.236 \| good	2.023 \| good	0.13 \| good
2026-09-30T14:00:00.000Z	33 \| good	4.249 \| good	9.079 \| good	36.031 \| good	0.235 \| good	2.103 \| good	0.133 \| good
2026-09-30T15:00:00.000Z	34 \| good	4.301 \| good	9.675 \| good	36.672 \| good	0.246 \| good	2.59 \| good	0.137 \| good
2026-09-30T16:00:00.000Z	32 \| good	4.499 \| good	9.98 \| good	35.286 \| good	0.272 \| good	3.262 \| good	0.14 \| good
2026-09-30T17:00:00.000Z	31 \| good	5.166 \| good	11.614 \| good	33.741 \| good	0.302 \| good	4.25 \| good	0.145 \| good
2026-09-30T18:00:00.000Z	30 \| good	5.41 \| good	12.381 \| good	31.635 \| good	0.384 \| good	5.87 \| good	0.151 \| good
2026-09-30T19:00:00.000Z	33 \| good	5.643 \| good	11.92 \| good	27.13 \| good	0.493 \| good	7.401 \| good	0.145 \| good
2026-09-30T20:00:00.000Z	33 \| good	5.646 \| good	13.063 \| good	24.544 \| good	0.559 \| good	7.745 \| good	0.141 \| good
2026-09-30T21:00:00.000Z	33 \| good	5.634 \| good	13.859 \| good	23.391 \| good	0.569 \| good	7.774 \| good	0.142 \| good
2026-09-30T22:00:00.000Z	33 \| good	5.618 \| good	13.631 \| good	22.625 \| good	0.52 \| good	7.746 \| good	0.146 \| good

St Helens

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

0.31ppm

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 2026-09-27.

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 05:00:00 on 2026-09-28.

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

The current air quality in St Helens, Merseyside is 25, categorized as Good based on real-time data.

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

The most common pollutant in St Helens, Merseyside is NO2.

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 3.128 μg/m³.

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

The current PM₁₀ concentration at St Helens, Merseyside is 13.975 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 0.312 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 0.722 ppb.

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

The current ozone (O₃) concentration at St Helens, Merseyside is 25.505 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 26.243 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-26T23:00:00.000Z	27 \| good	4.663 \| good	13.816 \| good	20.407 \| good	0.703 \| good	18.339 \| good	0.297 \| good
2026-09-27T00:00:00.000Z	27 \| good	4.909 \| good	14.19 \| good	17.077 \| good	0.504 \| good	16.45 \| good	0.227 \| good
2026-09-27T01:00:00.000Z	27 \| good	4.931 \| good	14.315 \| good	13.585 \| good	0.386 \| good	15.228 \| good	0.229 \| good
2026-09-27T02:00:00.000Z	27 \| good	5.056 \| good	14.193 \| good	11.861 \| good	0.909 \| good	10.784 \| good	0.212 \| good
2026-09-27T03:00:00.000Z	27 \| good	4.906 \| good	14.203 \| good	10.551 \| good	0.588 \| good	7.919 \| good	0.217 \| good
2026-09-27T04:00:00.000Z	38 \| good	6.792 \| good	13.419 \| good	11.784 \| good	0.578 \| good	8.653 \| good	0.205 \| good
2026-09-27T05:00:00.000Z	38 \| good	6.787 \| good	13.245 \| good	11.693 \| good	0.58 \| good	7.772 \| good	0.061 \| good
2026-09-27T06:00:00.000Z	38 \| good	6.86 \| good	12.759 \| good	13.064 \| good	0.382 \| good	7.74 \| good	0.058 \| good
2026-09-27T07:00:00.000Z	38 \| good	6.934 \| good	14.27 \| good	14.691 \| good	0.579 \| good	6.658 \| good	0.059 \| good
2026-09-27T08:00:00.000Z	33 \| good	6.393 \| good	14.181 \| good	16.277 \| good	0.583 \| good	4.953 \| good	0.062 \| good
2026-09-27T09:00:00.000Z	38 \| good	6.787 \| good	13.037 \| good	17.663 \| good	0.44 \| good	4.542 \| good	0.06 \| good
2026-09-27T10:00:00.000Z	38 \| good	6.558 \| good	12.44 \| good	18.924 \| good	0.465 \| good	5.094 \| good	0.072 \| good
2026-09-27T11:00:00.000Z	38 \| good	6.522 \| good	12.152 \| good	20.179 \| good	0.661 \| good	5.515 \| good	0.058 \| good
2026-09-27T12:00:00.000Z	33 \| good	6.477 \| good	14.641 \| good	21.606 \| good	1.449 \| good	5.304 \| good	0.055 \| good
2026-09-27T13:00:00.000Z	38 \| good	6.801 \| good	12.22 \| good	23.99 \| good	1.238 \| good	4.562 \| good	0.052 \| good
2026-09-27T14:00:00.000Z	38 \| good	6.967 \| good	15.037 \| good	26.229 \| good	1.317 \| good	4.77 \| good	0.053 \| good
2026-09-27T15:00:00.000Z	27 \| good	5.175 \| good	14.409 \| good	28.101 \| good	1.317 \| good	10.476 \| good	0.056 \| good
2026-09-27T16:00:00.000Z	27 \| good	5.063 \| good	13.995 \| good	29.046 \| good	0.894 \| good	11.385 \| good	0.055 \| good
2026-09-27T17:00:00.000Z	28 \| good	5.032 \| good	13.563 \| good	30.139 \| good	0.663 \| good	9.517 \| good	0.055 \| good
2026-09-27T18:00:00.000Z	30 \| good	5.016 \| good	13.679 \| good	31.678 \| good	0.608 \| good	3.472 \| good	0.066 \| good
2026-09-27T19:00:00.000Z	31 \| good	5.077 \| good	13.708 \| good	33.151 \| good	0.605 \| good	5.285 \| good	0.077 \| good
2026-09-27T20:00:00.000Z	31 \| good	4.693 \| good	13.798 \| good	33.573 \| good	0.609 \| good	6.382 \| good	0.087 \| good
2026-09-27T21:00:00.000Z	31 \| good	4.502 \| good	12.772 \| good	32.947 \| good	0.613 \| good	7.75 \| good	0.107 \| good
2026-09-27T22:00:00.000Z	30 \| good	4.541 \| good	12.637 \| good	31.97 \| good	0.712 \| good	8.063 \| good	0.09 \| good
2026-09-27T23:00:00.000Z	29 \| good	4.347 \| good	12.47 \| good	30.858 \| good	0.588 \| good	9.091 \| good	0.098 \| good
2026-09-28T00:00:00.000Z	27 \| good	4.285 \| good	12.242 \| good	29.131 \| good	0.581 \| good	8.897 \| good	0.255 \| good
2026-09-28T01:00:00.000Z	25 \| good	4.066 \| good	11.635 \| good	26.623 \| good	0.607 \| good	6.488 \| good	0.18 \| good
2026-09-28T02:00:00.000Z	22 \| good	3.835 \| good	11.51 \| good	23.985 \| good	0.576 \| good	6.059 \| good	0.226 \| good
2026-09-28T03:00:00.000Z	22 \| good	3.767 \| good	11.185 \| good	22.342 \| good	0.792 \| good	7.286 \| good	0.214 \| good
2026-09-28T04:00:00.000Z	27 \| good	5.01 \| good	10.343 \| good	18.195 \| good	0.793 \| good	6.982 \| good	0.218 \| good
2026-09-28T05:00:00.000Z	27 \| good	5.05 \| good	11.68 \| good	16.656 \| good	0.575 \| good	7.799 \| good	0.197 \| good
2026-09-28T06:00:00.000Z	27 \| good	5.024 \| good	12.26 \| good	15.527 \| good	0.657 \| good	10.188 \| good	0.21 \| good
2026-09-28T07:00:00.000Z	27 \| good	5.015 \| good	10.382 \| good	11.833 \| good	1.439 \| good	16.926 \| good	0.279 \| good
2026-09-28T08:00:00.000Z	22 \| good	3.813 \| good	10.436 \| good	8.094 \| good	0.936 \| good	12.95 \| good	0.264 \| good
2026-09-28T09:00:00.000Z	22 \| good	4.037 \| good	10.927 \| good	7.832 \| good	0.699 \| good	14.421 \| good	0.235 \| good
2026-09-28T10:00:00.000Z	22 \| good	4.014 \| good	11.224 \| good	5.932 \| good	0.704 \| good	13.624 \| good	0.221 \| good
2026-09-28T11:00:00.000Z	22 \| good	3.965 \| good	11.605 \| good	7.834 \| good	0.744 \| good	13.897 \| good	0.212 \| good
2026-09-28T12:00:00.000Z	22 \| good	3.846 \| good	10.943 \| good	7.481 \| good	2.606 \| good	12.04 \| good	0.188 \| good
2026-09-28T13:00:00.000Z	22 \| good	4.067 \| good	12.033 \| good	8.576 \| good	1.869 \| good	13.399 \| good	0.165 \| good
2026-09-28T14:00:00.000Z	22 \| good	3.737 \| good	12.146 \| good	12.144 \| good	1.737 \| good	12.471 \| good	0.162 \| good
2026-09-28T15:00:00.000Z	22 \| good	3.693 \| good	12.023 \| good	16.583 \| good	1.646 \| good	6.555 \| good	0.156 \| good
2026-09-28T16:00:00.000Z	22 \| good	3.749 \| good	12.054 \| good	19.494 \| good	0.73 \| good	7.006 \| good	0.153 \| good
2026-09-28T17:00:00.000Z	22 \| good	3.733 \| good	12.153 \| good	21.7 \| good	0.437 \| good	11.372 \| good	0.169 \| good
2026-09-28T18:00:00.000Z	23 \| good	3.848 \| good	12.068 \| good	25.372 \| good	0.458 \| good	10.533 \| good	0.217 \| good
2026-09-28T19:00:00.000Z	24 \| good	4.279 \| good	12.853 \| good	25.666 \| good	0.469 \| good	15.129 \| good	0.253 \| good
2026-09-28T20:00:00.000Z	27 \| good	4.255 \| good	12.804 \| good	29.043 \| good	0.87 \| good	22.412 \| good	0.324 \| good
2026-09-28T21:00:00.000Z	24 \| good	4.124 \| good	13.184 \| good	25.84 \| good	0.744 \| good	23.743 \| good	0.312 \| good
2026-09-28T22:00:00.000Z	33 \| good	5.788 \| good	12.301 \| good	26.085 \| good	0.983 \| good	18.141 \| good	0.352 \| good
2026-09-28T22:00:00.000Z	25 \| good	3.128 \| good	13.975 \| good	25.505 \| good	0.722 \| good	26.243 \| good	0.312 \| good
2026-09-28T23:00:00.000Z	52 \| moderate	9.56 \| good	16.2 \| good	14.289 \| good	0.735 \| good	15.669 \| good	0.188 \| good
2026-09-29T00:00:00.000Z	49 \| good	8.73 \| good	14.736 \| good	19.468 \| good	0.608 \| good	11.385 \| good	0.174 \| good
2026-09-29T01:00:00.000Z	38 \| good	7.258 \| good	12.484 \| good	22.376 \| good	0.54 \| good	7.758 \| good	0.164 \| good
2026-09-29T02:00:00.000Z	33 \| good	6.324 \| good	10.182 \| good	25.6 \| good	0.424 \| good	5.674 \| good	0.154 \| good
2026-09-29T03:00:00.000Z	33 \| good	5.916 \| good	8.1 \| good	26.003 \| good	0.31 \| good	4.378 \| good	0.145 \| good
2026-09-29T04:00:00.000Z	27 \| good	4.941 \| good	6.971 \| good	25.638 \| good	0.266 \| good	3.955 \| good	0.142 \| good
2026-09-29T05:00:00.000Z	24 \| good	4.39 \| good	6.622 \| good	25.986 \| good	0.255 \| good	4.079 \| good	0.141 \| good
2026-09-29T06:00:00.000Z	25 \| good	4.371 \| good	7.407 \| good	26.692 \| good	0.286 \| good	4.829 \| good	0.143 \| good
2026-09-29T07:00:00.000Z	27 \| good	5.08 \| good	7.795 \| good	27.249 \| good	0.316 \| good	6.643 \| good	0.148 \| good
2026-09-29T08:00:00.000Z	25 \| good	4.345 \| good	7.621 \| good	27.268 \| good	0.322 \| good	6.892 \| good	0.147 \| good
2026-09-29T09:00:00.000Z	26 \| good	3.898 \| good	6.673 \| good	27.792 \| good	0.276 \| good	5.929 \| good	0.141 \| good
2026-09-29T10:00:00.000Z	27 \| good	3.464 \| good	6.569 \| good	28.525 \| good	0.247 \| good	4.944 \| good	0.137 \| good
2026-09-29T11:00:00.000Z	29 \| good	3.619 \| good	5.731 \| good	30.715 \| good	0.198 \| good	4.599 \| good	0.134 \| good
2026-09-29T12:00:00.000Z	30 \| good	3.669 \| good	5.762 \| good	31.873 \| good	0.188 \| good	3.593 \| good	0.134 \| good
2026-09-29T13:00:00.000Z	31 \| good	4.08 \| good	6.086 \| good	32.628 \| good	0.2 \| good	3.538 \| good	0.136 \| good
2026-09-29T14:00:00.000Z	31 \| good	4.726 \| good	7.278 \| good	34.174 \| good	0.191 \| good	4.03 \| good	0.141 \| good
2026-09-29T15:00:00.000Z	31 \| good	5.463 \| good	8.33 \| good	34.368 \| good	0.218 \| good	4.651 \| good	0.144 \| good
2026-09-29T16:00:00.000Z	33 \| good	6.179 \| good	9.694 \| good	35.335 \| good	0.268 \| good	4.709 \| good	0.149 \| good
2026-09-29T17:00:00.000Z	38 \| good	7.467 \| good	11.045 \| good	36.68 \| good	0.293 \| good	5.39 \| good	0.152 \| good
2026-09-29T18:00:00.000Z	44 \| good	8.188 \| good	11.822 \| good	37.641 \| good	0.324 \| good	6.2 \| good	0.154 \| good
2026-09-29T19:00:00.000Z	44 \| good	7.889 \| good	12.318 \| good	38.053 \| good	0.359 \| good	6.084 \| good	0.155 \| good
2026-09-29T20:00:00.000Z	44 \| good	8.105 \| good	12.652 \| good	37.312 \| good	0.373 \| good	5.537 \| good	0.156 \| good
2026-09-29T21:00:00.000Z	44 \| good	8.392 \| good	13.137 \| good	36.592 \| good	0.377 \| good	5.352 \| good	0.156 \| good
2026-09-29T22:00:00.000Z	49 \| good	8.791 \| good	13.431 \| good	35.598 \| good	0.365 \| good	5.098 \| good	0.152 \| good
2026-09-29T23:00:00.000Z	52 \| moderate	9.696 \| good	13.165 \| good	34.564 \| good	0.318 \| good	4.631 \| good	0.147 \| good
2026-09-30T00:00:00.000Z	44 \| good	8.451 \| good	11.548 \| good	34.675 \| good	0.304 \| good	4.093 \| good	0.144 \| good
2026-09-30T01:00:00.000Z	38 \| good	6.977 \| good	10.271 \| good	35.78 \| good	0.271 \| good	3.227 \| good	0.137 \| good
2026-09-30T02:00:00.000Z	33 \| good	6.469 \| good	9.092 \| good	36.134 \| good	0.245 \| good	2.616 \| good	0.132 \| good
2026-09-30T03:00:00.000Z	33 \| good	6.293 \| good	9.178 \| good	35.408 \| good	0.235 \| good	2.408 \| good	0.13 \| good
2026-09-30T04:00:00.000Z	33 \| good	6.428 \| good	9.937 \| good	34.365 \| good	0.222 \| good	2.409 \| good	0.128 \| good
2026-09-30T05:00:00.000Z	38 \| good	6.595 \| good	8.944 \| good	33.161 \| good	0.203 \| good	2.624 \| good	0.126 \| good
2026-09-30T06:00:00.000Z	33 \| good	6.241 \| good	8.632 \| good	31.68 \| good	0.197 \| good	3.045 \| good	0.125 \| good
2026-09-30T07:00:00.000Z	33 \| good	6.086 \| good	7.256 \| good	29.685 \| good	0.211 \| good	3.801 \| good	0.127 \| good
2026-09-30T08:00:00.000Z	27 \| good	5.433 \| good	6.436 \| good	28.543 \| good	0.208 \| good	4.899 \| good	0.128 \| good
2026-09-30T09:00:00.000Z	27 \| good	4.302 \| good	6.335 \| good	29.159 \| good	0.205 \| good	4.184 \| good	0.119 \| good
2026-09-30T10:00:00.000Z	28 \| good	4.55 \| good	6.532 \| good	30.447 \| good	0.203 \| good	3.048 \| good	0.116 \| good
2026-09-30T11:00:00.000Z	30 \| good	4.006 \| good	7.197 \| good	31.743 \| good	0.205 \| good	2.462 \| good	0.119 \| good
2026-09-30T12:00:00.000Z	31 \| good	4.271 \| good	8.12 \| good	33.176 \| good	0.22 \| good	2.135 \| good	0.125 \| good
2026-09-30T13:00:00.000Z	32 \| good	4.203 \| good	8.893 \| good	34.863 \| good	0.236 \| good	2.023 \| good	0.13 \| good
2026-09-30T14:00:00.000Z	33 \| good	4.249 \| good	9.079 \| good	36.031 \| good	0.235 \| good	2.103 \| good	0.133 \| good
2026-09-30T15:00:00.000Z	34 \| good	4.301 \| good	9.675 \| good	36.672 \| good	0.246 \| good	2.59 \| good	0.137 \| good
2026-09-30T16:00:00.000Z	32 \| good	4.499 \| good	9.98 \| good	35.286 \| good	0.272 \| good	3.262 \| good	0.14 \| good
2026-09-30T17:00:00.000Z	31 \| good	5.166 \| good	11.614 \| good	33.741 \| good	0.302 \| good	4.25 \| good	0.145 \| good
2026-09-30T18:00:00.000Z	30 \| good	5.41 \| good	12.381 \| good	31.635 \| good	0.384 \| good	5.87 \| good	0.151 \| good
2026-09-30T19:00:00.000Z	33 \| good	5.643 \| good	11.92 \| good	27.13 \| good	0.493 \| good	7.401 \| good	0.145 \| good
2026-09-30T20:00:00.000Z	33 \| good	5.646 \| good	13.063 \| good	24.544 \| good	0.559 \| good	7.745 \| good	0.141 \| good
2026-09-30T21:00:00.000Z	33 \| good	5.634 \| good	13.859 \| good	23.391 \| good	0.569 \| good	7.774 \| good	0.142 \| good
2026-09-30T22:00:00.000Z	33 \| good	5.618 \| good	13.631 \| good	22.625 \| good	0.52 \| good	7.746 \| good	0.146 \| 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

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

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

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

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?