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

The current PM10 concentration at St Helens, Merseyside is 9.984 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 0.412 ppb.

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

The current ozone (O3) concentration at St Helens, Merseyside is 25.363 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 11.443 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 2.126 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)

2.13 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

9.98 μg/m³

155

255

425

605+

Ozone (O₃)

25.36 ppb

201

201+

Sulfur Dioxide (SO₂)

0.41 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

11.44 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.74 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

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
2026-03-05T03:00:00.000Z	62 \| moderate	15.332 \| fine	24.271 \| good	17.415 \| good	0.408 \| good	9.991 \| good	0.44 \| good
2026-03-05T04:00:00.000Z	38 \| good	6.7 \| good	30 \| good	15.892 \| good	0.469 \| good	8.511 \| good	0.51 \| good
2026-03-05T05:00:00.000Z	38 \| good	6.7 \| good	30 \| good	15.169 \| good	0.624 \| good	8.511 \| good	0.593 \| good
2026-03-05T06:00:00.000Z	38 \| good	6.9 \| good	31 \| good	14.403 \| good	0.652 \| good	7.979 \| good	0.501 \| good
2026-03-05T07:00:00.000Z	38 \| good	7.2 \| good	32 \| good	14.203 \| good	0.469 \| good	7.979 \| good	0.177 \| good
2026-03-05T08:00:00.000Z	38 \| good	7.4 \| good	34 \| good	13.043 \| good	0.516 \| good	20.213 \| good	0.146 \| good
2026-03-05T09:00:00.000Z	38 \| good	7.4 \| good	34 \| good	11.376 \| good	0.794 \| good	20.213 \| good	0.158 \| good
2026-03-05T10:00:00.000Z	44 \| good	7.9 \| good	36 \| good	9.702 \| good	0.858 \| good	19.149 \| good	0.105 \| good
2026-03-05T11:00:00.000Z	44 \| good	8.1 \| good	37 \| good	9.515 \| good	1.561 \| good	16.489 \| good	0.083 \| good
2026-03-05T12:00:00.000Z	44 \| good	8.4 \| good	38 \| good	10.288 \| good	1.545 \| good	14.894 \| good	0.068 \| good
2026-03-05T13:00:00.000Z	44 \| good	8.4 \| good	38 \| good	12.53 \| good	1.286 \| good	14.894 \| good	0.065 \| good
2026-03-05T14:00:00.000Z	49 \| good	8.6 \| good	39 \| good	13.579 \| good	0.918 \| good	13.298 \| good	0.488 \| good
2026-03-05T15:00:00.000Z	49 \| good	9.1 \| good	41 \| good	16.691 \| good	1.858 \| good	18.617 \| good	0.181 \| good
2026-03-05T16:00:00.000Z	49 \| good	9.3 \| good	42 \| good	17.539 \| good	1.611 \| good	18.617 \| good	0.188 \| good
2026-03-05T17:00:00.000Z	49 \| good	9.3 \| good	42 \| good	19.146 \| good	1.058 \| good	18.617 \| good	0.196 \| good
2026-03-05T18:00:00.000Z	49 \| good	9.3 \| good	42 \| good	18.133 \| good	1.084 \| good	20.385 \| good	0.265 \| good
2026-03-05T19:00:00.000Z	69 \| moderate	19.465 \| fine	26.041 \| good	22.811 \| good	0.676 \| good	12.774 \| good	0.192 \| good
2026-03-05T20:00:00.000Z	52 \| moderate	10 \| good	45 \| good	22.484 \| good	0.951 \| good	32.979 \| good	0.597 \| good
2026-03-05T21:00:00.000Z	52 \| moderate	9.8 \| good	44 \| good	27.245 \| good	0.777 \| good	15.957 \| good	0.275 \| good
2026-03-05T22:00:00.000Z	52 \| moderate	9.8 \| good	44 \| good	31.619 \| good	0.6 \| good	4.255 \| good	0.303 \| good
2026-03-05T23:00:00.000Z	52 \| moderate	9.6 \| good	43 \| good	18.761 \| good	0.573 \| good	3.191 \| good	0.315 \| good
2026-03-06T00:00:00.000Z	52 \| moderate	9.6 \| good	43 \| good	18.643 \| good	0.543 \| good	3.191 \| good	0.763 \| good
2026-03-06T01:00:00.000Z	52 \| moderate	9.8 \| good	44 \| good	20.35 \| good	0.441 \| good	3.191 \| good	0.666 \| good
2026-03-06T02:00:00.000Z	49 \| good	8.8 \| good	40 \| good	20.268 \| good	0.435 \| good	4.207 \| good	0.555 \| good
2026-03-06T03:00:00.000Z	49 \| good	8.8 \| good	40 \| good	19.321 \| good	0.442 \| good	2.191 \| good	0.553 \| good
2026-03-06T04:00:00.000Z	49 \| good	8.6 \| good	39 \| good	26.88 \| good	0.443 \| good	2.35 \| good	0.459 \| good
2026-03-06T05:00:00.000Z	44 \| good	8.1 \| good	37 \| good	26.279 \| good	0.476 \| good	2.13 \| good	0.481 \| good
2026-03-06T06:00:00.000Z	44 \| good	7.9 \| good	36 \| good	32.925 \| good	0.447 \| good	3.598 \| good	0.483 \| good
2026-03-06T07:00:00.000Z	44 \| good	7.9 \| good	36 \| good	30.845 \| good	0.382 \| good	5.731 \| good	0.138 \| good
2026-03-06T08:00:00.000Z	44 \| good	7.6 \| good	35 \| good	31.039 \| good	0.422 \| good	6.154 \| good	0.175 \| good
2026-03-06T09:00:00.000Z	38 \| good	6.7 \| good	30 \| good	32.074 \| good	0.415 \| good	14.894 \| good	0.18 \| good
2026-03-06T10:00:00.000Z	33 \| good	6.4 \| good	29 \| good	29.407 \| good	0.666 \| good	14.894 \| good	0.154 \| good
2026-03-06T11:00:00.000Z	33 \| good	5.5 \| good	25 \| good	29.19 \| good	0.662 \| good	9.574 \| good	0.124 \| good
2026-03-06T12:00:00.000Z	27 \| good	5 \| good	23 \| good	27.891 \| good	0.414 \| good	15.957 \| good	0.1 \| good
2026-03-06T13:00:00.000Z	27 \| good	4.5 \| good	21 \| good	28.712 \| good	0.411 \| good	13.298 \| good	0.077 \| good
2026-03-06T14:00:00.000Z	27 \| good	4.5 \| good	20 \| good	29.164 \| good	0.382 \| good	13.298 \| good	0.066 \| good
2026-03-06T15:00:00.000Z	27 \| good	4 \| good	18 \| good	29 \| good	0.408 \| good	7.216 \| good	0.062 \| good
2026-03-06T16:00:00.000Z	31 \| good	3.8 \| good	17 \| good	33.164 \| good	0.408 \| good	12.234 \| good	0.07 \| good
2026-03-06T17:00:00.000Z	29 \| good	3.3 \| good	15 \| good	31.39 \| good	0.408 \| good	16.489 \| good	0.083 \| good
2026-03-06T18:00:00.000Z	29 \| good	2.8 \| good	13 \| good	31.136 \| good	0.477 \| good	16.489 \| good	0.089 \| good
2026-03-06T19:00:00.000Z	27 \| good	2.6 \| good	12 \| good	29.424 \| good	0.382 \| good	16.489 \| good	0.125 \| good
2026-03-06T20:00:00.000Z	22 \| good	2.4 \| good	11 \| good	24.198 \| good	0.43 \| good	15.791 \| good	0.299 \| good
2026-03-06T21:00:00.000Z	22 \| good	2.1 \| good	10 \| good	24.295 \| good	0.554 \| good	12.349 \| good	0.395 \| good
2026-03-06T22:00:00.000Z	22 \| good	2.1 \| good	10 \| good	23.871 \| good	0.547 \| good	16.379 \| good	0.259 \| good
2026-03-06T23:00:00.000Z	28 \| good	2.1 \| good	10 \| good	29.788 \| good	0.426 \| good	19.149 \| good	0.321 \| good
2026-03-07T00:00:00.000Z	25 \| good	2.1 \| good	10 \| good	27.065 \| good	0.453 \| good	18.085 \| good	0.934 \| good
2026-03-07T01:00:00.000Z	23 \| good	2.1 \| good	10 \| good	24.981 \| good	0.412 \| good	18.085 \| good	0.792 \| good
2026-03-07T02:00:00.000Z	23 \| good	2.1 \| good	10 \| good	25.383 \| good	0.411 \| good	11.491 \| good	0.741 \| good
2026-03-07T02:00:00.000Z	23 \| good	2.126 \| good	9.984 \| good	25.363 \| good	0.412 \| good	11.443 \| good	0.741 \| good
2026-03-07T03:00:00.000Z	54 \| moderate	10.879 \| good	13.47 \| good	13.622 \| good	0.888 \| good	15.531 \| good	0.183 \| good
2026-03-07T04:00:00.000Z	58 \| moderate	12.577 \| fine	14.319 \| good	11.902 \| good	0.923 \| good	16.628 \| good	0.183 \| good
2026-03-07T05:00:00.000Z	60 \| moderate	13.776 \| fine	15.562 \| good	9.227 \| good	1.025 \| good	18.311 \| good	0.187 \| good
2026-03-07T06:00:00.000Z	62 \| moderate	15.252 \| fine	17.125 \| good	7.205 \| good	1.314 \| good	20.059 \| good	0.19 \| good
2026-03-07T07:00:00.000Z	64 \| moderate	16.026 \| fine	19.093 \| good	5.215 \| good	1.696 \| good	23.486 \| good	0.199 \| good
2026-03-07T08:00:00.000Z	66 \| moderate	17.034 \| fine	21.096 \| good	4.94 \| good	1.998 \| good	21.205 \| good	0.24 \| good
2026-03-07T09:00:00.000Z	66 \| moderate	17.027 \| fine	21.382 \| good	11.778 \| good	2.31 \| good	20.677 \| good	0.235 \| good
2026-03-07T10:00:00.000Z	66 \| moderate	17.401 \| fine	21.18 \| good	17.042 \| good	2.197 \| good	19.712 \| good	0.226 \| good
2026-03-07T11:00:00.000Z	60 \| moderate	13.951 \| fine	19.887 \| good	21.842 \| good	1.644 \| good	13.071 \| good	0.205 \| good
2026-03-07T12:00:00.000Z	58 \| moderate	12.809 \| fine	17.679 \| good	24.381 \| good	1.201 \| good	9.124 \| good	0.189 \| good
2026-03-07T13:00:00.000Z	56 \| moderate	11.835 \| good	17.67 \| good	25.985 \| good	0.891 \| good	8.317 \| good	0.182 \| good
2026-03-07T14:00:00.000Z	56 \| moderate	12.238 \| fine	18.73 \| good	25.609 \| good	0.716 \| good	8.171 \| good	0.181 \| good
2026-03-07T15:00:00.000Z	56 \| moderate	12.177 \| fine	17.461 \| good	24.557 \| good	0.721 \| good	8.703 \| good	0.185 \| good
2026-03-07T16:00:00.000Z	56 \| moderate	12.001 \| good	17.494 \| good	24.236 \| good	0.671 \| good	9.203 \| good	0.19 \| good
2026-03-07T17:00:00.000Z	56 \| moderate	11.739 \| good	17.501 \| good	24.78 \| good	0.669 \| good	11.256 \| good	0.206 \| good
2026-03-07T18:00:00.000Z	58 \| moderate	12.829 \| fine	18.77 \| good	21.54 \| good	0.75 \| good	13.914 \| good	0.215 \| good
2026-03-07T19:00:00.000Z	60 \| moderate	14.073 \| fine	20.412 \| good	19.048 \| good	0.972 \| good	15.629 \| good	0.24 \| good
2026-03-07T20:00:00.000Z	62 \| moderate	15.344 \| fine	21.919 \| good	15.769 \| good	1.131 \| good	17.964 \| good	0.227 \| good
2026-03-07T21:00:00.000Z	66 \| moderate	16.634 \| fine	23.366 \| good	12.994 \| good	1.238 \| good	18.194 \| good	0.232 \| good
2026-03-07T22:00:00.000Z	67 \| moderate	17.783 \| fine	24.203 \| good	13.97 \| good	1.24 \| good	18.112 \| good	0.234 \| good
2026-03-07T23:00:00.000Z	69 \| moderate	18.94 \| fine	25.602 \| good	11.932 \| good	1.08 \| good	16.902 \| good	0.232 \| good
2026-03-08T00:00:00.000Z	69 \| moderate	18.818 \| fine	26.337 \| good	11.786 \| good	0.959 \| good	14.758 \| good	0.22 \| good
2026-03-08T01:00:00.000Z	69 \| moderate	19.23 \| fine	26.085 \| good	12.123 \| good	0.891 \| good	13.492 \| good	0.205 \| good
2026-03-08T02:00:00.000Z	69 \| moderate	19.069 \| fine	24.749 \| good	12.719 \| good	0.862 \| good	13.643 \| good	0.192 \| good
2026-03-08T03:00:00.000Z	69 \| moderate	18.666 \| fine	26.725 \| good	14.36 \| good	0.85 \| good	10.73 \| good	0.182 \| good
2026-03-08T04:00:00.000Z	69 \| moderate	18.546 \| fine	26.741 \| good	15.408 \| good	0.739 \| good	9.276 \| good	0.179 \| good
2026-03-08T05:00:00.000Z	69 \| moderate	18.537 \| fine	28.11 \| good	15.62 \| good	0.643 \| good	8.476 \| good	0.176 \| good
2026-03-08T06:00:00.000Z	69 \| moderate	19.495 \| fine	26.889 \| good	14.539 \| good	0.617 \| good	9.404 \| good	0.171 \| good
2026-03-08T07:00:00.000Z	73 \| moderate	20.738 \| fine	27.922 \| good	12.717 \| good	0.667 \| good	9.869 \| good	0.17 \| good
2026-03-08T08:00:00.000Z	73 \| moderate	20.564 \| fine	28.293 \| good	15.758 \| good	0.657 \| good	8.758 \| good	0.187 \| good
2026-03-08T09:00:00.000Z	71 \| moderate	20.347 \| fine	29.565 \| good	23.005 \| good	0.621 \| good	6.896 \| good	0.179 \| good
2026-03-08T10:00:00.000Z	67 \| moderate	18.205 \| fine	26.541 \| good	23.028 \| good	0.533 \| good	6.7 \| good	0.168 \| good
2026-03-08T11:00:00.000Z	66 \| moderate	17.387 \| fine	30.114 \| good	29.677 \| good	0.444 \| good	5.238 \| good	0.168 \| good
2026-03-08T12:00:00.000Z	69 \| moderate	18.509 \| fine	30.078 \| good	30.235 \| good	0.365 \| good	5.34 \| good	0.159 \| good
2026-03-08T13:00:00.000Z	71 \| moderate	19.724 \| fine	29.718 \| good	28.992 \| good	0.36 \| good	5.655 \| good	0.171 \| good
2026-03-08T14:00:00.000Z	71 \| moderate	20.279 \| fine	32.738 \| good	29.102 \| good	0.363 \| good	6.249 \| good	0.175 \| good
2026-03-08T15:00:00.000Z	79 \| moderate	24.421 \| fine	36.617 \| good	28.455 \| good	0.346 \| good	6.756 \| good	0.185 \| good
2026-03-08T16:00:00.000Z	90 \| moderate	29.55 \| fine	41.851 \| good	25.385 \| good	0.375 \| good	7.657 \| good	0.2 \| good
2026-03-08T17:00:00.000Z	96 \| moderate	32.722 \| fine	46.649 \| good	23.556 \| good	0.468 \| good	9.059 \| good	0.217 \| good
2026-03-08T18:00:00.000Z	105 \| sensitive	36.582 \| moderate	48.11 \| good	19.847 \| good	0.627 \| good	10.553 \| good	0.234 \| good
2026-03-08T19:00:00.000Z	105 \| sensitive	37.227 \| moderate	48.909 \| good	18.066 \| good	0.75 \| good	12.84 \| good	0.246 \| good
2026-03-08T20:00:00.000Z	110 \| sensitive	38.709 \| moderate	50.81 \| good	13.442 \| good	0.884 \| good	14.027 \| good	0.236 \| good
2026-03-08T21:00:00.000Z	119 \| sensitive	42.55 \| moderate	53.51 \| good	12.873 \| good	0.958 \| good	14.21 \| good	0.239 \| good
2026-03-08T22:00:00.000Z	124 \| sensitive	45.233 \| moderate	55.672 \| fine	14.328 \| good	0.685 \| good	13.871 \| good	0.252 \| good
2026-03-08T23:00:00.000Z	124 \| sensitive	45.293 \| moderate	56.919 \| fine	14.062 \| good	0.681 \| good	13.362 \| good	0.241 \| good
2026-03-09T00:00:00.000Z	127 \| sensitive	45.704 \| moderate	59.923 \| fine	14.108 \| good	0.65 \| good	12.808 \| good	0.24 \| good
2026-03-09T01:00:00.000Z	129 \| sensitive	46.878 \| moderate	50.818 \| good	13.242 \| good	0.645 \| good	12.601 \| good	0.235 \| good
2026-03-09T02:00:00.000Z	129 \| sensitive	46.819 \| moderate	52.417 \| good	13.717 \| good	0.561 \| good	12.413 \| good	0.23 \| good

St Helens

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

0.79ppm

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 04:00:00 on 2026-03-06.

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 10:00:00 on 2026-03-06.

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

The current air quality in St Helens, Merseyside is 23, 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 O3.

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 2.126 μg/m³.

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

The current PM₁₀ concentration at St Helens, Merseyside is 9.984 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 0.741 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 0.412 ppb.

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

The current ozone (O₃) concentration at St Helens, Merseyside is 25.363 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 11.443 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-05T03:00:00.000Z	62 \| moderate	15.332 \| fine	24.271 \| good	17.415 \| good	0.408 \| good	9.991 \| good	0.44 \| good
2026-03-05T04:00:00.000Z	38 \| good	6.7 \| good	30 \| good	15.892 \| good	0.469 \| good	8.511 \| good	0.51 \| good
2026-03-05T05:00:00.000Z	38 \| good	6.7 \| good	30 \| good	15.169 \| good	0.624 \| good	8.511 \| good	0.593 \| good
2026-03-05T06:00:00.000Z	38 \| good	6.9 \| good	31 \| good	14.403 \| good	0.652 \| good	7.979 \| good	0.501 \| good
2026-03-05T07:00:00.000Z	38 \| good	7.2 \| good	32 \| good	14.203 \| good	0.469 \| good	7.979 \| good	0.177 \| good
2026-03-05T08:00:00.000Z	38 \| good	7.4 \| good	34 \| good	13.043 \| good	0.516 \| good	20.213 \| good	0.146 \| good
2026-03-05T09:00:00.000Z	38 \| good	7.4 \| good	34 \| good	11.376 \| good	0.794 \| good	20.213 \| good	0.158 \| good
2026-03-05T10:00:00.000Z	44 \| good	7.9 \| good	36 \| good	9.702 \| good	0.858 \| good	19.149 \| good	0.105 \| good
2026-03-05T11:00:00.000Z	44 \| good	8.1 \| good	37 \| good	9.515 \| good	1.561 \| good	16.489 \| good	0.083 \| good
2026-03-05T12:00:00.000Z	44 \| good	8.4 \| good	38 \| good	10.288 \| good	1.545 \| good	14.894 \| good	0.068 \| good
2026-03-05T13:00:00.000Z	44 \| good	8.4 \| good	38 \| good	12.53 \| good	1.286 \| good	14.894 \| good	0.065 \| good
2026-03-05T14:00:00.000Z	49 \| good	8.6 \| good	39 \| good	13.579 \| good	0.918 \| good	13.298 \| good	0.488 \| good
2026-03-05T15:00:00.000Z	49 \| good	9.1 \| good	41 \| good	16.691 \| good	1.858 \| good	18.617 \| good	0.181 \| good
2026-03-05T16:00:00.000Z	49 \| good	9.3 \| good	42 \| good	17.539 \| good	1.611 \| good	18.617 \| good	0.188 \| good
2026-03-05T17:00:00.000Z	49 \| good	9.3 \| good	42 \| good	19.146 \| good	1.058 \| good	18.617 \| good	0.196 \| good
2026-03-05T18:00:00.000Z	49 \| good	9.3 \| good	42 \| good	18.133 \| good	1.084 \| good	20.385 \| good	0.265 \| good
2026-03-05T19:00:00.000Z	69 \| moderate	19.465 \| fine	26.041 \| good	22.811 \| good	0.676 \| good	12.774 \| good	0.192 \| good
2026-03-05T20:00:00.000Z	52 \| moderate	10 \| good	45 \| good	22.484 \| good	0.951 \| good	32.979 \| good	0.597 \| good
2026-03-05T21:00:00.000Z	52 \| moderate	9.8 \| good	44 \| good	27.245 \| good	0.777 \| good	15.957 \| good	0.275 \| good
2026-03-05T22:00:00.000Z	52 \| moderate	9.8 \| good	44 \| good	31.619 \| good	0.6 \| good	4.255 \| good	0.303 \| good
2026-03-05T23:00:00.000Z	52 \| moderate	9.6 \| good	43 \| good	18.761 \| good	0.573 \| good	3.191 \| good	0.315 \| good
2026-03-06T00:00:00.000Z	52 \| moderate	9.6 \| good	43 \| good	18.643 \| good	0.543 \| good	3.191 \| good	0.763 \| good
2026-03-06T01:00:00.000Z	52 \| moderate	9.8 \| good	44 \| good	20.35 \| good	0.441 \| good	3.191 \| good	0.666 \| good
2026-03-06T02:00:00.000Z	49 \| good	8.8 \| good	40 \| good	20.268 \| good	0.435 \| good	4.207 \| good	0.555 \| good
2026-03-06T03:00:00.000Z	49 \| good	8.8 \| good	40 \| good	19.321 \| good	0.442 \| good	2.191 \| good	0.553 \| good
2026-03-06T04:00:00.000Z	49 \| good	8.6 \| good	39 \| good	26.88 \| good	0.443 \| good	2.35 \| good	0.459 \| good
2026-03-06T05:00:00.000Z	44 \| good	8.1 \| good	37 \| good	26.279 \| good	0.476 \| good	2.13 \| good	0.481 \| good
2026-03-06T06:00:00.000Z	44 \| good	7.9 \| good	36 \| good	32.925 \| good	0.447 \| good	3.598 \| good	0.483 \| good
2026-03-06T07:00:00.000Z	44 \| good	7.9 \| good	36 \| good	30.845 \| good	0.382 \| good	5.731 \| good	0.138 \| good
2026-03-06T08:00:00.000Z	44 \| good	7.6 \| good	35 \| good	31.039 \| good	0.422 \| good	6.154 \| good	0.175 \| good
2026-03-06T09:00:00.000Z	38 \| good	6.7 \| good	30 \| good	32.074 \| good	0.415 \| good	14.894 \| good	0.18 \| good
2026-03-06T10:00:00.000Z	33 \| good	6.4 \| good	29 \| good	29.407 \| good	0.666 \| good	14.894 \| good	0.154 \| good
2026-03-06T11:00:00.000Z	33 \| good	5.5 \| good	25 \| good	29.19 \| good	0.662 \| good	9.574 \| good	0.124 \| good
2026-03-06T12:00:00.000Z	27 \| good	5 \| good	23 \| good	27.891 \| good	0.414 \| good	15.957 \| good	0.1 \| good
2026-03-06T13:00:00.000Z	27 \| good	4.5 \| good	21 \| good	28.712 \| good	0.411 \| good	13.298 \| good	0.077 \| good
2026-03-06T14:00:00.000Z	27 \| good	4.5 \| good	20 \| good	29.164 \| good	0.382 \| good	13.298 \| good	0.066 \| good
2026-03-06T15:00:00.000Z	27 \| good	4 \| good	18 \| good	29 \| good	0.408 \| good	7.216 \| good	0.062 \| good
2026-03-06T16:00:00.000Z	31 \| good	3.8 \| good	17 \| good	33.164 \| good	0.408 \| good	12.234 \| good	0.07 \| good
2026-03-06T17:00:00.000Z	29 \| good	3.3 \| good	15 \| good	31.39 \| good	0.408 \| good	16.489 \| good	0.083 \| good
2026-03-06T18:00:00.000Z	29 \| good	2.8 \| good	13 \| good	31.136 \| good	0.477 \| good	16.489 \| good	0.089 \| good
2026-03-06T19:00:00.000Z	27 \| good	2.6 \| good	12 \| good	29.424 \| good	0.382 \| good	16.489 \| good	0.125 \| good
2026-03-06T20:00:00.000Z	22 \| good	2.4 \| good	11 \| good	24.198 \| good	0.43 \| good	15.791 \| good	0.299 \| good
2026-03-06T21:00:00.000Z	22 \| good	2.1 \| good	10 \| good	24.295 \| good	0.554 \| good	12.349 \| good	0.395 \| good
2026-03-06T22:00:00.000Z	22 \| good	2.1 \| good	10 \| good	23.871 \| good	0.547 \| good	16.379 \| good	0.259 \| good
2026-03-06T23:00:00.000Z	28 \| good	2.1 \| good	10 \| good	29.788 \| good	0.426 \| good	19.149 \| good	0.321 \| good
2026-03-07T00:00:00.000Z	25 \| good	2.1 \| good	10 \| good	27.065 \| good	0.453 \| good	18.085 \| good	0.934 \| good
2026-03-07T01:00:00.000Z	23 \| good	2.1 \| good	10 \| good	24.981 \| good	0.412 \| good	18.085 \| good	0.792 \| good
2026-03-07T02:00:00.000Z	23 \| good	2.1 \| good	10 \| good	25.383 \| good	0.411 \| good	11.491 \| good	0.741 \| good
2026-03-07T02:00:00.000Z	23 \| good	2.126 \| good	9.984 \| good	25.363 \| good	0.412 \| good	11.443 \| good	0.741 \| good
2026-03-07T03:00:00.000Z	54 \| moderate	10.879 \| good	13.47 \| good	13.622 \| good	0.888 \| good	15.531 \| good	0.183 \| good
2026-03-07T04:00:00.000Z	58 \| moderate	12.577 \| fine	14.319 \| good	11.902 \| good	0.923 \| good	16.628 \| good	0.183 \| good
2026-03-07T05:00:00.000Z	60 \| moderate	13.776 \| fine	15.562 \| good	9.227 \| good	1.025 \| good	18.311 \| good	0.187 \| good
2026-03-07T06:00:00.000Z	62 \| moderate	15.252 \| fine	17.125 \| good	7.205 \| good	1.314 \| good	20.059 \| good	0.19 \| good
2026-03-07T07:00:00.000Z	64 \| moderate	16.026 \| fine	19.093 \| good	5.215 \| good	1.696 \| good	23.486 \| good	0.199 \| good
2026-03-07T08:00:00.000Z	66 \| moderate	17.034 \| fine	21.096 \| good	4.94 \| good	1.998 \| good	21.205 \| good	0.24 \| good
2026-03-07T09:00:00.000Z	66 \| moderate	17.027 \| fine	21.382 \| good	11.778 \| good	2.31 \| good	20.677 \| good	0.235 \| good
2026-03-07T10:00:00.000Z	66 \| moderate	17.401 \| fine	21.18 \| good	17.042 \| good	2.197 \| good	19.712 \| good	0.226 \| good
2026-03-07T11:00:00.000Z	60 \| moderate	13.951 \| fine	19.887 \| good	21.842 \| good	1.644 \| good	13.071 \| good	0.205 \| good
2026-03-07T12:00:00.000Z	58 \| moderate	12.809 \| fine	17.679 \| good	24.381 \| good	1.201 \| good	9.124 \| good	0.189 \| good
2026-03-07T13:00:00.000Z	56 \| moderate	11.835 \| good	17.67 \| good	25.985 \| good	0.891 \| good	8.317 \| good	0.182 \| good
2026-03-07T14:00:00.000Z	56 \| moderate	12.238 \| fine	18.73 \| good	25.609 \| good	0.716 \| good	8.171 \| good	0.181 \| good
2026-03-07T15:00:00.000Z	56 \| moderate	12.177 \| fine	17.461 \| good	24.557 \| good	0.721 \| good	8.703 \| good	0.185 \| good
2026-03-07T16:00:00.000Z	56 \| moderate	12.001 \| good	17.494 \| good	24.236 \| good	0.671 \| good	9.203 \| good	0.19 \| good
2026-03-07T17:00:00.000Z	56 \| moderate	11.739 \| good	17.501 \| good	24.78 \| good	0.669 \| good	11.256 \| good	0.206 \| good
2026-03-07T18:00:00.000Z	58 \| moderate	12.829 \| fine	18.77 \| good	21.54 \| good	0.75 \| good	13.914 \| good	0.215 \| good
2026-03-07T19:00:00.000Z	60 \| moderate	14.073 \| fine	20.412 \| good	19.048 \| good	0.972 \| good	15.629 \| good	0.24 \| good
2026-03-07T20:00:00.000Z	62 \| moderate	15.344 \| fine	21.919 \| good	15.769 \| good	1.131 \| good	17.964 \| good	0.227 \| good
2026-03-07T21:00:00.000Z	66 \| moderate	16.634 \| fine	23.366 \| good	12.994 \| good	1.238 \| good	18.194 \| good	0.232 \| good
2026-03-07T22:00:00.000Z	67 \| moderate	17.783 \| fine	24.203 \| good	13.97 \| good	1.24 \| good	18.112 \| good	0.234 \| good
2026-03-07T23:00:00.000Z	69 \| moderate	18.94 \| fine	25.602 \| good	11.932 \| good	1.08 \| good	16.902 \| good	0.232 \| good
2026-03-08T00:00:00.000Z	69 \| moderate	18.818 \| fine	26.337 \| good	11.786 \| good	0.959 \| good	14.758 \| good	0.22 \| good
2026-03-08T01:00:00.000Z	69 \| moderate	19.23 \| fine	26.085 \| good	12.123 \| good	0.891 \| good	13.492 \| good	0.205 \| good
2026-03-08T02:00:00.000Z	69 \| moderate	19.069 \| fine	24.749 \| good	12.719 \| good	0.862 \| good	13.643 \| good	0.192 \| good
2026-03-08T03:00:00.000Z	69 \| moderate	18.666 \| fine	26.725 \| good	14.36 \| good	0.85 \| good	10.73 \| good	0.182 \| good
2026-03-08T04:00:00.000Z	69 \| moderate	18.546 \| fine	26.741 \| good	15.408 \| good	0.739 \| good	9.276 \| good	0.179 \| good
2026-03-08T05:00:00.000Z	69 \| moderate	18.537 \| fine	28.11 \| good	15.62 \| good	0.643 \| good	8.476 \| good	0.176 \| good
2026-03-08T06:00:00.000Z	69 \| moderate	19.495 \| fine	26.889 \| good	14.539 \| good	0.617 \| good	9.404 \| good	0.171 \| good
2026-03-08T07:00:00.000Z	73 \| moderate	20.738 \| fine	27.922 \| good	12.717 \| good	0.667 \| good	9.869 \| good	0.17 \| good
2026-03-08T08:00:00.000Z	73 \| moderate	20.564 \| fine	28.293 \| good	15.758 \| good	0.657 \| good	8.758 \| good	0.187 \| good
2026-03-08T09:00:00.000Z	71 \| moderate	20.347 \| fine	29.565 \| good	23.005 \| good	0.621 \| good	6.896 \| good	0.179 \| good
2026-03-08T10:00:00.000Z	67 \| moderate	18.205 \| fine	26.541 \| good	23.028 \| good	0.533 \| good	6.7 \| good	0.168 \| good
2026-03-08T11:00:00.000Z	66 \| moderate	17.387 \| fine	30.114 \| good	29.677 \| good	0.444 \| good	5.238 \| good	0.168 \| good
2026-03-08T12:00:00.000Z	69 \| moderate	18.509 \| fine	30.078 \| good	30.235 \| good	0.365 \| good	5.34 \| good	0.159 \| good
2026-03-08T13:00:00.000Z	71 \| moderate	19.724 \| fine	29.718 \| good	28.992 \| good	0.36 \| good	5.655 \| good	0.171 \| good
2026-03-08T14:00:00.000Z	71 \| moderate	20.279 \| fine	32.738 \| good	29.102 \| good	0.363 \| good	6.249 \| good	0.175 \| good
2026-03-08T15:00:00.000Z	79 \| moderate	24.421 \| fine	36.617 \| good	28.455 \| good	0.346 \| good	6.756 \| good	0.185 \| good
2026-03-08T16:00:00.000Z	90 \| moderate	29.55 \| fine	41.851 \| good	25.385 \| good	0.375 \| good	7.657 \| good	0.2 \| good
2026-03-08T17:00:00.000Z	96 \| moderate	32.722 \| fine	46.649 \| good	23.556 \| good	0.468 \| good	9.059 \| good	0.217 \| good
2026-03-08T18:00:00.000Z	105 \| sensitive	36.582 \| moderate	48.11 \| good	19.847 \| good	0.627 \| good	10.553 \| good	0.234 \| good
2026-03-08T19:00:00.000Z	105 \| sensitive	37.227 \| moderate	48.909 \| good	18.066 \| good	0.75 \| good	12.84 \| good	0.246 \| good
2026-03-08T20:00:00.000Z	110 \| sensitive	38.709 \| moderate	50.81 \| good	13.442 \| good	0.884 \| good	14.027 \| good	0.236 \| good
2026-03-08T21:00:00.000Z	119 \| sensitive	42.55 \| moderate	53.51 \| good	12.873 \| good	0.958 \| good	14.21 \| good	0.239 \| good
2026-03-08T22:00:00.000Z	124 \| sensitive	45.233 \| moderate	55.672 \| fine	14.328 \| good	0.685 \| good	13.871 \| good	0.252 \| good
2026-03-08T23:00:00.000Z	124 \| sensitive	45.293 \| moderate	56.919 \| fine	14.062 \| good	0.681 \| good	13.362 \| good	0.241 \| good
2026-03-09T00:00:00.000Z	127 \| sensitive	45.704 \| moderate	59.923 \| fine	14.108 \| good	0.65 \| good	12.808 \| good	0.24 \| good
2026-03-09T01:00:00.000Z	129 \| sensitive	46.878 \| moderate	50.818 \| good	13.242 \| good	0.645 \| good	12.601 \| good	0.235 \| good
2026-03-09T02:00:00.000Z	129 \| sensitive	46.819 \| moderate	52.417 \| good	13.717 \| good	0.561 \| good	12.413 \| good	0.23 \| 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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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?