What is the current level of PM10 in Horsham, West Sussex?

Horsham, West Sussex currently has a PM10 concentration of 9.674 μg/m3.

What is the current level of sulfur dioxide (SO2) in Horsham, West Sussex?

The current sulfur dioxide (SO2) concentration in Horsham, West Sussex is 0.36 ppb.

What is the current level of ozone (O3) in Horsham, West Sussex?

Horsham, West Sussex currently has an ozone (O3) concentration of 29.154 ppm.

What is the current level of nitrogen dioxide (NO2) in Horsham, West Sussex?

The current level of nitrogen dioxide (NO2) in Horsham, West Sussex is 3.583 ppb.

Current air quality index in Horsham, West Sussex today

Name: Live air pollution levels in Horsham, West Sussex today
Creator: Ambee

Stay updated with real-time air quality in Horsham, West Sussex 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

Horsham, West Sussex

Last updated: ... (Local time)

Common air pollutants in Horsham, West Sussex

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

3.30 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

7.01 μg/m³

155

255

425

605+

Ozone (O₃)

24.78 ppb

201

201+

Sulfur Dioxide (SO₂)

0.38 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

1.48 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.20 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

Horsham, West Sussex

Get Live Pollen Counts

Horsham, West Sussex

Scroll To Air Quality Map

Track live Horsham, West Sussex air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-09-16T04:00:00.000Z	49 \| good	8.586 \| good	14.46 \| good	27.001 \| good	0.442 \| good	2.31 \| good	0.363 \| good
2025-09-16T05:00:00.000Z	49 \| good	9.343 \| good	13.244 \| good	23.09 \| good	0.352 \| good	0.856 \| good	0.321 \| good
2025-09-16T06:00:00.000Z	44 \| good	8.354 \| good	16.117 \| good	27.4 \| good	0.353 \| good	1.779 \| good	0.029 \| good
2025-09-16T07:00:00.000Z	44 \| good	7.75 \| good	16.553 \| good	27.687 \| good	0.353 \| good	2.19 \| good	0.031 \| good
2025-09-16T08:00:00.000Z	44 \| good	8.018 \| good	18.491 \| good	27.24 \| good	0.39 \| good	4.294 \| good	0.028 \| good
2025-09-16T09:00:00.000Z	44 \| good	7.846 \| good	11.434 \| good	28.631 \| good	0.462 \| good	4.791 \| good	0.027 \| good
2025-09-16T10:00:00.000Z	38 \| good	7.446 \| good	12.601 \| good	23.627 \| good	0.434 \| good	4.001 \| good	0.027 \| good
2025-09-16T11:00:00.000Z	38 \| good	6.804 \| good	12.848 \| good	28.094 \| good	0.432 \| good	2.952 \| good	0.026 \| good
2025-09-16T12:00:00.000Z	27 \| good	5.456 \| good	10.864 \| good	26.123 \| good	0.469 \| good	3.461 \| good	0.024 \| good
2025-09-16T13:00:00.000Z	27 \| good	5.101 \| good	17.24 \| good	23.924 \| good	0.427 \| good	3.784 \| good	0.023 \| good
2025-09-16T14:00:00.000Z	24 \| good	4.159 \| good	12.292 \| good	26.453 \| good	0.469 \| good	3.459 \| good	0.024 \| good
2025-09-16T15:00:00.000Z	27 \| good	4.767 \| good	14.661 \| good	23.419 \| good	0.433 \| good	4.11 \| good	0.024 \| good
2025-09-16T16:00:00.000Z	22 \| good	4.304 \| good	13.909 \| good	24.245 \| good	0.507 \| good	4.037 \| good	0.023 \| good
2025-09-16T17:00:00.000Z	23 \| good	4.441 \| good	19.26 \| good	24.822 \| good	0.543 \| good	4.017 \| good	0.023 \| good
2025-09-16T18:00:00.000Z	44 \| good	8.192 \| good	30.186 \| good	27.944 \| good	0.39 \| good	2.872 \| good	0.026 \| good
2025-09-16T19:00:00.000Z	33 \| good	5.954 \| good	30.583 \| good	27.887 \| good	0.426 \| good	4.845 \| good	0.027 \| good
2025-09-16T20:00:00.000Z	33 \| good	5.618 \| good	15.193 \| good	25.673 \| good	0.354 \| good	4.273 \| good	0.027 \| good
2025-09-16T21:00:00.000Z	27 \| good	5.074 \| good	12.031 \| good	23.827 \| good	0.354 \| good	5.95 \| good	0.027 \| good
2025-09-16T22:00:00.000Z	27 \| good	5.395 \| good	12.447 \| good	27.18 \| good	0.39 \| good	3.804 \| good	0.022 \| good
2025-09-16T23:00:00.000Z	32 \| good	3.801 \| good	34.969 \| good	28.585 \| good	0.352 \| good	3.645 \| good	0.023 \| good
2025-09-17T00:00:00.000Z	25 \| good	3.964 \| good	15.881 \| good	26.94 \| good	0.44 \| good	4.182 \| good	0.29 \| good
2025-09-17T01:00:00.000Z	26 \| good	4.131 \| good	16.437 \| good	27.836 \| good	0.436 \| good	4.013 \| good	0.339 \| good
2025-09-17T02:00:00.000Z	33 \| good	6.049 \| good	15.867 \| good	24.003 \| good	0.436 \| good	2.73 \| good	0.312 \| good
2025-09-17T03:00:00.000Z	33 \| good	6.356 \| good	10.207 \| good	22.55 \| good	0.436 \| good	2.835 \| good	0.361 \| good
2025-09-17T04:00:00.000Z	38 \| good	7.1 \| good	9.2 \| good	22.521 \| good	0.443 \| good	2.219 \| good	0.37 \| good
2025-09-17T05:00:00.000Z	33 \| good	5.659 \| good	13.257 \| good	19.279 \| good	0.352 \| good	2.643 \| good	0.445 \| good
2025-09-17T06:00:00.000Z	33 \| good	6.438 \| good	14.539 \| good	26.226 \| good	0.352 \| good	2.904 \| good	0.022 \| good
2025-09-17T07:00:00.000Z	27 \| good	5.251 \| good	11.84 \| good	27.249 \| good	0.352 \| good	3.992 \| good	0.024 \| good
2025-09-17T08:00:00.000Z	33 \| good	5.769 \| good	13.608 \| good	24.236 \| good	0.352 \| good	3.925 \| good	0.022 \| good
2025-09-17T09:00:00.000Z	28 \| good	5.453 \| good	11.194 \| good	30.384 \| good	0.351 \| good	5.574 \| good	0.021 \| good
2025-09-17T10:00:00.000Z	27 \| good	4.567 \| good	15.14 \| good	24.013 \| good	0.315 \| good	5.138 \| good	0.021 \| good
2025-09-17T11:00:00.000Z	27 \| good	4.192 \| good	10.6 \| good	29.26 \| good	0.314 \| good	3.964 \| good	0.021 \| good
2025-09-17T12:00:00.000Z	27 \| good	5.375 \| good	9.674 \| good	29.154 \| good	0.36 \| good	3.583 \| good	0.021 \| good
2025-09-17T13:00:00.000Z	33 \| good	5.714 \| good	11.045 \| good	28.788 \| good	0.359 \| good	3.872 \| good	0.021 \| good
2025-09-17T14:00:00.000Z	27 \| good	4.248 \| good	10.919 \| good	29.017 \| good	0.359 \| good	2.891 \| good	0.02 \| good
2025-09-17T15:00:00.000Z	27 \| good	5.239 \| good	10.034 \| good	28.188 \| good	0.358 \| good	2.986 \| good	0.02 \| good
2025-09-17T16:00:00.000Z	27 \| good	5.182 \| good	9.93 \| good	28.998 \| good	0.424 \| good	3.624 \| good	0.021 \| good
2025-09-17T17:00:00.000Z	27 \| good	4.484 \| good	9.077 \| good	29.303 \| good	0.359 \| good	4.011 \| good	0.023 \| good
2025-09-17T18:00:00.000Z	29 \| good	5.242 \| good	9.652 \| good	31.469 \| good	0.351 \| good	3.891 \| good	0.022 \| good
2025-09-17T19:00:00.000Z	28 \| good	5.399 \| good	9.465 \| good	30.183 \| good	0.351 \| good	3.827 \| good	0.022 \| good
2025-09-17T20:00:00.000Z	28 \| good	5.188 \| good	9.189 \| good	30.129 \| good	0.315 \| good	3.303 \| good	0.023 \| good
2025-09-17T21:00:00.000Z	28 \| good	5.057 \| good	8.914 \| good	29.865 \| good	0.352 \| good	2.505 \| good	0.026 \| good
2025-09-17T22:00:00.000Z	27 \| good	5.191 \| good	8.013 \| good	26.125 \| good	0.314 \| good	2.934 \| good	0.016 \| good
2025-09-17T23:00:00.000Z	27 \| good	4.913 \| good	7.874 \| good	25.524 \| good	0.36 \| good	2.488 \| good	0.016 \| good
2025-09-18T00:00:00.000Z	27 \| good	4.682 \| good	7.465 \| good	24.752 \| good	0.382 \| good	1.457 \| good	0.208 \| good
2025-09-18T01:00:00.000Z	22 \| good	3.547 \| good	7.083 \| good	23.781 \| good	0.382 \| good	1.429 \| good	0.153 \| good
2025-09-18T02:00:00.000Z	23 \| good	3.302 \| good	7.011 \| good	24.779 \| good	0.382 \| good	1.484 \| good	0.195 \| good
2025-09-18T03:00:00.000Z	23 \| good	3.302 \| good	7.011 \| good	24.779 \| good	0.382 \| good	1.484 \| good	0.195 \| good
2025-09-17T14:00:00.000Z	34 \| good	4.904 \| good	11.263 \| good	36.778 \| good	0.095 \| good	1.609 \| good	0.113 \| good
2025-09-17T15:00:00.000Z	33 \| good	5.089 \| good	12.562 \| good	36.457 \| good	0.097 \| good	1.866 \| good	0.112 \| good
2025-09-17T16:00:00.000Z	33 \| good	4.989 \| good	12.043 \| good	36.323 \| good	0.101 \| good	2.155 \| good	0.112 \| good
2025-09-17T17:00:00.000Z	32 \| good	4.947 \| good	11.743 \| good	35.499 \| good	0.122 \| good	2.368 \| good	0.112 \| good
2025-09-17T18:00:00.000Z	32 \| good	4.932 \| good	11.644 \| good	34.812 \| good	0.121 \| good	2.543 \| good	0.111 \| good
2025-09-17T19:00:00.000Z	31 \| good	4.908 \| good	11.504 \| good	34.334 \| good	0.119 \| good	2.317 \| good	0.111 \| good
2025-09-17T20:00:00.000Z	31 \| good	4.891 \| good	11.164 \| good	33.779 \| good	0.113 \| good	2.196 \| good	0.11 \| good
2025-09-17T21:00:00.000Z	31 \| good	4.878 \| good	11.422 \| good	33.043 \| good	0.111 \| good	2.074 \| good	0.109 \| good
2025-09-17T22:00:00.000Z	31 \| good	4.721 \| good	11.297 \| good	32.691 \| good	0.107 \| good	1.994 \| good	0.107 \| good
2025-09-17T23:00:00.000Z	30 \| good	4.514 \| good	10.648 \| good	31.879 \| good	0.092 \| good	1.856 \| good	0.106 \| good
2025-09-18T00:00:00.000Z	29 \| good	4.41 \| good	10.419 \| good	31.384 \| good	0.086 \| good	1.827 \| good	0.104 \| good
2025-09-18T01:00:00.000Z	29 \| good	4.369 \| good	9.856 \| good	30.978 \| good	0.083 \| good	1.764 \| good	0.103 \| good
2025-09-18T02:00:00.000Z	29 \| good	4.019 \| good	8.852 \| good	30.611 \| good	0.083 \| good	1.609 \| good	0.101 \| good
2025-09-18T03:00:00.000Z	28 \| good	3.704 \| good	8.08 \| good	30.359 \| good	0.086 \| good	1.603 \| good	0.1 \| good
2025-09-18T04:00:00.000Z	28 \| good	3.612 \| good	7.928 \| good	30.267 \| good	0.088 \| good	1.497 \| good	0.099 \| good
2025-09-18T05:00:00.000Z	28 \| good	3.616 \| good	8.005 \| good	29.852 \| good	0.084 \| good	1.504 \| good	0.098 \| good
2025-09-18T06:00:00.000Z	27 \| good	3.691 \| good	7.825 \| good	29.315 \| good	0.1 \| good	1.924 \| good	0.1 \| good
2025-09-18T07:00:00.000Z	28 \| good	3.83 \| good	8.374 \| good	29.856 \| good	0.116 \| good	2.483 \| good	0.102 \| good
2025-09-18T08:00:00.000Z	28 \| good	3.791 \| good	7.682 \| good	30.167 \| good	0.103 \| good	2.551 \| good	0.102 \| good
2025-09-18T09:00:00.000Z	28 \| good	3.582 \| good	6.857 \| good	30.064 \| good	0.08 \| good	1.89 \| good	0.102 \| good
2025-09-18T10:00:00.000Z	28 \| good	3.352 \| good	6.814 \| good	30.2 \| good	0.079 \| good	1.746 \| good	0.101 \| good
2025-09-18T11:00:00.000Z	27 \| good	3.506 \| good	7.072 \| good	28.926 \| good	0.076 \| good	1.709 \| good	0.101 \| good
2025-09-18T12:00:00.000Z	28 \| good	3.546 \| good	7.088 \| good	29.868 \| good	0.073 \| good	1.625 \| good	0.1 \| good
2025-09-18T13:00:00.000Z	29 \| good	3.533 \| good	7.532 \| good	30.835 \| good	0.073 \| good	1.487 \| good	0.1 \| good
2025-09-18T14:00:00.000Z	29 \| good	3.536 \| good	7.404 \| good	31.193 \| good	0.073 \| good	1.509 \| good	0.1 \| good
2025-09-18T15:00:00.000Z	30 \| good	3.618 \| good	7.444 \| good	31.525 \| good	0.072 \| good	1.675 \| good	0.101 \| good
2025-09-18T16:00:00.000Z	28 \| good	3.688 \| good	7.297 \| good	30.398 \| good	0.073 \| good	1.903 \| good	0.102 \| good
2025-09-18T17:00:00.000Z	28 \| good	3.691 \| good	6.842 \| good	29.686 \| good	0.097 \| good	2.3 \| good	0.103 \| good
2025-09-18T18:00:00.000Z	27 \| good	3.738 \| good	6.498 \| good	29.399 \| good	0.114 \| good	2.637 \| good	0.104 \| good
2025-09-18T19:00:00.000Z	27 \| good	3.671 \| good	6.493 \| good	28.719 \| good	0.127 \| good	2.544 \| good	0.104 \| good
2025-09-18T20:00:00.000Z	26 \| good	3.741 \| good	6.7 \| good	28.002 \| good	0.139 \| good	2.465 \| good	0.104 \| good
2025-09-18T21:00:00.000Z	25 \| good	3.886 \| good	7.091 \| good	27.008 \| good	0.147 \| good	2.471 \| good	0.105 \| good
2025-09-18T22:00:00.000Z	25 \| good	4.073 \| good	6.948 \| good	26.945 \| good	0.154 \| good	2.853 \| good	0.105 \| good
2025-09-18T23:00:00.000Z	27 \| good	4.556 \| good	7.307 \| good	26.952 \| good	0.146 \| good	3.106 \| good	0.105 \| good
2025-09-19T00:00:00.000Z	27 \| good	4.689 \| good	7.47 \| good	27.061 \| good	0.138 \| good	3.202 \| good	0.105 \| good
2025-09-19T01:00:00.000Z	27 \| good	4.678 \| good	7.76 \| good	25.942 \| good	0.125 \| good	3.22 \| good	0.106 \| good
2025-09-19T02:00:00.000Z	27 \| good	4.65 \| good	8.14 \| good	25.046 \| good	0.14 \| good	3.107 \| good	0.106 \| good
2025-09-19T03:00:00.000Z	27 \| good	4.951 \| good	7.861 \| good	24.281 \| good	0.157 \| good	3.23 \| good	0.107 \| good
2025-09-19T04:00:00.000Z	33 \| good	6.325 \| good	8.603 \| good	23.557 \| good	0.153 \| good	3.375 \| good	0.108 \| good
2025-09-19T05:00:00.000Z	38 \| good	7.429 \| good	9.646 \| good	22.001 \| good	0.154 \| good	3.734 \| good	0.108 \| good
2025-09-19T06:00:00.000Z	49 \| good	8.518 \| good	11.251 \| good	20.907 \| good	0.177 \| good	4.909 \| good	0.109 \| good
2025-09-19T07:00:00.000Z	52 \| moderate	9.543 \| good	11.947 \| good	18.721 \| good	0.213 \| good	6.597 \| good	0.113 \| good
2025-09-19T08:00:00.000Z	49 \| good	8.587 \| good	11.734 \| good	21.84 \| good	0.212 \| good	6.074 \| good	0.114 \| good
2025-09-19T09:00:00.000Z	44 \| good	7.504 \| good	10.453 \| good	23.868 \| good	0.226 \| good	5.052 \| good	0.114 \| good
2025-09-19T10:00:00.000Z	38 \| good	7.093 \| good	9.306 \| good	27.592 \| good	0.184 \| good	3.374 \| good	0.113 \| good
2025-09-19T11:00:00.000Z	33 \| good	5.585 \| good	8.658 \| good	32.502 \| good	0.172 \| good	2.514 \| good	0.113 \| good
2025-09-19T12:00:00.000Z	35 \| good	4.869 \| good	8.689 \| good	38.059 \| good	0.16 \| good	1.766 \| good	0.115 \| good
2025-09-19T13:00:00.000Z	39 \| good	4.962 \| good	8.604 \| good	41.716 \| good	0.162 \| good	1.4 \| good	0.115 \| good

Horsham

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Horsham, West Sussex

0.02ppm

How accurate is West Sussex, UK air quality data?

The air quality data for West Sussex, UK is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.

Source: Ambee Data Sources

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Frequently asked questions

How frequently does the air quality data for Horsham, West Sussex get updated?

Air quality updates for Horsham, West Sussex are available every hour.

What time in the past 24 hours saw the poorest air quality in Horsham, West Sussex?

Horsham, West Sussex experienced its worst air quality at 06:00:00, 2025-09-16.

When was air quality in Horsham, West Sussex the best over the past 24 hours?

The best air quality in Horsham, West Sussex was observed at 04:00:00 on 2025-09-16.

What is the air quality in Horsham, West Sussex right now?

The air quality in Horsham, West Sussex right now is Good, with an AQI of 27.

What pollutant is most frequently found in Horsham, West Sussex?

In Horsham, West Sussex, O3 is the most frequently found pollutant.

What can I do if the air quality in Horsham, West Sussex is poor?

When air quality in Horsham, West Sussex is compromised, staying indoors and wearing a mask can reduce health risks.

What is the PM_2.5 concentration in Horsham, West Sussex right now?

Horsham, West Sussex currently has a PM_2.5 concentration of 5.375 μg/m³.

What is the current level of PM₁₀ in Horsham, West Sussex?

Horsham, West Sussex currently has a PM₁₀ concentration of 9.674 μg/m³.

What is the current level of carbon monoxide (CO) in Horsham, West Sussex?

The current carbon monoxide (CO) level in Horsham, West Sussex is 0.021 ppm.

What is the current level of sulfur dioxide (SO₂) in Horsham, West Sussex?

The current sulfur dioxide (SO₂) concentration in Horsham, West Sussex is 0.36 ppb.

What is the current level of ozone (O₃) in Horsham, West Sussex?

Horsham, West Sussex currently has an ozone (O₃) concentration of 29.154 ppm.

What is the current level of nitrogen dioxide (NO₂) in Horsham, West Sussex?

The current level of nitrogen dioxide (NO₂) in Horsham, West Sussex is 3.583 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-09-16T04:00:00.000Z	49 \| good	8.586 \| good	14.46 \| good	27.001 \| good	0.442 \| good	2.31 \| good	0.363 \| good
2025-09-16T05:00:00.000Z	49 \| good	9.343 \| good	13.244 \| good	23.09 \| good	0.352 \| good	0.856 \| good	0.321 \| good
2025-09-16T06:00:00.000Z	44 \| good	8.354 \| good	16.117 \| good	27.4 \| good	0.353 \| good	1.779 \| good	0.029 \| good
2025-09-16T07:00:00.000Z	44 \| good	7.75 \| good	16.553 \| good	27.687 \| good	0.353 \| good	2.19 \| good	0.031 \| good
2025-09-16T08:00:00.000Z	44 \| good	8.018 \| good	18.491 \| good	27.24 \| good	0.39 \| good	4.294 \| good	0.028 \| good
2025-09-16T09:00:00.000Z	44 \| good	7.846 \| good	11.434 \| good	28.631 \| good	0.462 \| good	4.791 \| good	0.027 \| good
2025-09-16T10:00:00.000Z	38 \| good	7.446 \| good	12.601 \| good	23.627 \| good	0.434 \| good	4.001 \| good	0.027 \| good
2025-09-16T11:00:00.000Z	38 \| good	6.804 \| good	12.848 \| good	28.094 \| good	0.432 \| good	2.952 \| good	0.026 \| good
2025-09-16T12:00:00.000Z	27 \| good	5.456 \| good	10.864 \| good	26.123 \| good	0.469 \| good	3.461 \| good	0.024 \| good
2025-09-16T13:00:00.000Z	27 \| good	5.101 \| good	17.24 \| good	23.924 \| good	0.427 \| good	3.784 \| good	0.023 \| good
2025-09-16T14:00:00.000Z	24 \| good	4.159 \| good	12.292 \| good	26.453 \| good	0.469 \| good	3.459 \| good	0.024 \| good
2025-09-16T15:00:00.000Z	27 \| good	4.767 \| good	14.661 \| good	23.419 \| good	0.433 \| good	4.11 \| good	0.024 \| good
2025-09-16T16:00:00.000Z	22 \| good	4.304 \| good	13.909 \| good	24.245 \| good	0.507 \| good	4.037 \| good	0.023 \| good
2025-09-16T17:00:00.000Z	23 \| good	4.441 \| good	19.26 \| good	24.822 \| good	0.543 \| good	4.017 \| good	0.023 \| good
2025-09-16T18:00:00.000Z	44 \| good	8.192 \| good	30.186 \| good	27.944 \| good	0.39 \| good	2.872 \| good	0.026 \| good
2025-09-16T19:00:00.000Z	33 \| good	5.954 \| good	30.583 \| good	27.887 \| good	0.426 \| good	4.845 \| good	0.027 \| good
2025-09-16T20:00:00.000Z	33 \| good	5.618 \| good	15.193 \| good	25.673 \| good	0.354 \| good	4.273 \| good	0.027 \| good
2025-09-16T21:00:00.000Z	27 \| good	5.074 \| good	12.031 \| good	23.827 \| good	0.354 \| good	5.95 \| good	0.027 \| good
2025-09-16T22:00:00.000Z	27 \| good	5.395 \| good	12.447 \| good	27.18 \| good	0.39 \| good	3.804 \| good	0.022 \| good
2025-09-16T23:00:00.000Z	32 \| good	3.801 \| good	34.969 \| good	28.585 \| good	0.352 \| good	3.645 \| good	0.023 \| good
2025-09-17T00:00:00.000Z	25 \| good	3.964 \| good	15.881 \| good	26.94 \| good	0.44 \| good	4.182 \| good	0.29 \| good
2025-09-17T01:00:00.000Z	26 \| good	4.131 \| good	16.437 \| good	27.836 \| good	0.436 \| good	4.013 \| good	0.339 \| good
2025-09-17T02:00:00.000Z	33 \| good	6.049 \| good	15.867 \| good	24.003 \| good	0.436 \| good	2.73 \| good	0.312 \| good
2025-09-17T03:00:00.000Z	33 \| good	6.356 \| good	10.207 \| good	22.55 \| good	0.436 \| good	2.835 \| good	0.361 \| good
2025-09-17T04:00:00.000Z	38 \| good	7.1 \| good	9.2 \| good	22.521 \| good	0.443 \| good	2.219 \| good	0.37 \| good
2025-09-17T05:00:00.000Z	33 \| good	5.659 \| good	13.257 \| good	19.279 \| good	0.352 \| good	2.643 \| good	0.445 \| good
2025-09-17T06:00:00.000Z	33 \| good	6.438 \| good	14.539 \| good	26.226 \| good	0.352 \| good	2.904 \| good	0.022 \| good
2025-09-17T07:00:00.000Z	27 \| good	5.251 \| good	11.84 \| good	27.249 \| good	0.352 \| good	3.992 \| good	0.024 \| good
2025-09-17T08:00:00.000Z	33 \| good	5.769 \| good	13.608 \| good	24.236 \| good	0.352 \| good	3.925 \| good	0.022 \| good
2025-09-17T09:00:00.000Z	28 \| good	5.453 \| good	11.194 \| good	30.384 \| good	0.351 \| good	5.574 \| good	0.021 \| good
2025-09-17T10:00:00.000Z	27 \| good	4.567 \| good	15.14 \| good	24.013 \| good	0.315 \| good	5.138 \| good	0.021 \| good
2025-09-17T11:00:00.000Z	27 \| good	4.192 \| good	10.6 \| good	29.26 \| good	0.314 \| good	3.964 \| good	0.021 \| good
2025-09-17T12:00:00.000Z	27 \| good	5.375 \| good	9.674 \| good	29.154 \| good	0.36 \| good	3.583 \| good	0.021 \| good
2025-09-17T13:00:00.000Z	33 \| good	5.714 \| good	11.045 \| good	28.788 \| good	0.359 \| good	3.872 \| good	0.021 \| good
2025-09-17T14:00:00.000Z	27 \| good	4.248 \| good	10.919 \| good	29.017 \| good	0.359 \| good	2.891 \| good	0.02 \| good
2025-09-17T15:00:00.000Z	27 \| good	5.239 \| good	10.034 \| good	28.188 \| good	0.358 \| good	2.986 \| good	0.02 \| good
2025-09-17T16:00:00.000Z	27 \| good	5.182 \| good	9.93 \| good	28.998 \| good	0.424 \| good	3.624 \| good	0.021 \| good
2025-09-17T17:00:00.000Z	27 \| good	4.484 \| good	9.077 \| good	29.303 \| good	0.359 \| good	4.011 \| good	0.023 \| good
2025-09-17T18:00:00.000Z	29 \| good	5.242 \| good	9.652 \| good	31.469 \| good	0.351 \| good	3.891 \| good	0.022 \| good
2025-09-17T19:00:00.000Z	28 \| good	5.399 \| good	9.465 \| good	30.183 \| good	0.351 \| good	3.827 \| good	0.022 \| good
2025-09-17T20:00:00.000Z	28 \| good	5.188 \| good	9.189 \| good	30.129 \| good	0.315 \| good	3.303 \| good	0.023 \| good
2025-09-17T21:00:00.000Z	28 \| good	5.057 \| good	8.914 \| good	29.865 \| good	0.352 \| good	2.505 \| good	0.026 \| good
2025-09-17T22:00:00.000Z	27 \| good	5.191 \| good	8.013 \| good	26.125 \| good	0.314 \| good	2.934 \| good	0.016 \| good
2025-09-17T23:00:00.000Z	27 \| good	4.913 \| good	7.874 \| good	25.524 \| good	0.36 \| good	2.488 \| good	0.016 \| good
2025-09-18T00:00:00.000Z	27 \| good	4.682 \| good	7.465 \| good	24.752 \| good	0.382 \| good	1.457 \| good	0.208 \| good
2025-09-18T01:00:00.000Z	22 \| good	3.547 \| good	7.083 \| good	23.781 \| good	0.382 \| good	1.429 \| good	0.153 \| good
2025-09-18T02:00:00.000Z	23 \| good	3.302 \| good	7.011 \| good	24.779 \| good	0.382 \| good	1.484 \| good	0.195 \| good
2025-09-18T03:00:00.000Z	23 \| good	3.302 \| good	7.011 \| good	24.779 \| good	0.382 \| good	1.484 \| good	0.195 \| good
2025-09-17T14:00:00.000Z	34 \| good	4.904 \| good	11.263 \| good	36.778 \| good	0.095 \| good	1.609 \| good	0.113 \| good
2025-09-17T15:00:00.000Z	33 \| good	5.089 \| good	12.562 \| good	36.457 \| good	0.097 \| good	1.866 \| good	0.112 \| good
2025-09-17T16:00:00.000Z	33 \| good	4.989 \| good	12.043 \| good	36.323 \| good	0.101 \| good	2.155 \| good	0.112 \| good
2025-09-17T17:00:00.000Z	32 \| good	4.947 \| good	11.743 \| good	35.499 \| good	0.122 \| good	2.368 \| good	0.112 \| good
2025-09-17T18:00:00.000Z	32 \| good	4.932 \| good	11.644 \| good	34.812 \| good	0.121 \| good	2.543 \| good	0.111 \| good
2025-09-17T19:00:00.000Z	31 \| good	4.908 \| good	11.504 \| good	34.334 \| good	0.119 \| good	2.317 \| good	0.111 \| good
2025-09-17T20:00:00.000Z	31 \| good	4.891 \| good	11.164 \| good	33.779 \| good	0.113 \| good	2.196 \| good	0.11 \| good
2025-09-17T21:00:00.000Z	31 \| good	4.878 \| good	11.422 \| good	33.043 \| good	0.111 \| good	2.074 \| good	0.109 \| good
2025-09-17T22:00:00.000Z	31 \| good	4.721 \| good	11.297 \| good	32.691 \| good	0.107 \| good	1.994 \| good	0.107 \| good
2025-09-17T23:00:00.000Z	30 \| good	4.514 \| good	10.648 \| good	31.879 \| good	0.092 \| good	1.856 \| good	0.106 \| good
2025-09-18T00:00:00.000Z	29 \| good	4.41 \| good	10.419 \| good	31.384 \| good	0.086 \| good	1.827 \| good	0.104 \| good
2025-09-18T01:00:00.000Z	29 \| good	4.369 \| good	9.856 \| good	30.978 \| good	0.083 \| good	1.764 \| good	0.103 \| good
2025-09-18T02:00:00.000Z	29 \| good	4.019 \| good	8.852 \| good	30.611 \| good	0.083 \| good	1.609 \| good	0.101 \| good
2025-09-18T03:00:00.000Z	28 \| good	3.704 \| good	8.08 \| good	30.359 \| good	0.086 \| good	1.603 \| good	0.1 \| good
2025-09-18T04:00:00.000Z	28 \| good	3.612 \| good	7.928 \| good	30.267 \| good	0.088 \| good	1.497 \| good	0.099 \| good
2025-09-18T05:00:00.000Z	28 \| good	3.616 \| good	8.005 \| good	29.852 \| good	0.084 \| good	1.504 \| good	0.098 \| good
2025-09-18T06:00:00.000Z	27 \| good	3.691 \| good	7.825 \| good	29.315 \| good	0.1 \| good	1.924 \| good	0.1 \| good
2025-09-18T07:00:00.000Z	28 \| good	3.83 \| good	8.374 \| good	29.856 \| good	0.116 \| good	2.483 \| good	0.102 \| good
2025-09-18T08:00:00.000Z	28 \| good	3.791 \| good	7.682 \| good	30.167 \| good	0.103 \| good	2.551 \| good	0.102 \| good
2025-09-18T09:00:00.000Z	28 \| good	3.582 \| good	6.857 \| good	30.064 \| good	0.08 \| good	1.89 \| good	0.102 \| good
2025-09-18T10:00:00.000Z	28 \| good	3.352 \| good	6.814 \| good	30.2 \| good	0.079 \| good	1.746 \| good	0.101 \| good
2025-09-18T11:00:00.000Z	27 \| good	3.506 \| good	7.072 \| good	28.926 \| good	0.076 \| good	1.709 \| good	0.101 \| good
2025-09-18T12:00:00.000Z	28 \| good	3.546 \| good	7.088 \| good	29.868 \| good	0.073 \| good	1.625 \| good	0.1 \| good
2025-09-18T13:00:00.000Z	29 \| good	3.533 \| good	7.532 \| good	30.835 \| good	0.073 \| good	1.487 \| good	0.1 \| good
2025-09-18T14:00:00.000Z	29 \| good	3.536 \| good	7.404 \| good	31.193 \| good	0.073 \| good	1.509 \| good	0.1 \| good
2025-09-18T15:00:00.000Z	30 \| good	3.618 \| good	7.444 \| good	31.525 \| good	0.072 \| good	1.675 \| good	0.101 \| good
2025-09-18T16:00:00.000Z	28 \| good	3.688 \| good	7.297 \| good	30.398 \| good	0.073 \| good	1.903 \| good	0.102 \| good
2025-09-18T17:00:00.000Z	28 \| good	3.691 \| good	6.842 \| good	29.686 \| good	0.097 \| good	2.3 \| good	0.103 \| good
2025-09-18T18:00:00.000Z	27 \| good	3.738 \| good	6.498 \| good	29.399 \| good	0.114 \| good	2.637 \| good	0.104 \| good
2025-09-18T19:00:00.000Z	27 \| good	3.671 \| good	6.493 \| good	28.719 \| good	0.127 \| good	2.544 \| good	0.104 \| good
2025-09-18T20:00:00.000Z	26 \| good	3.741 \| good	6.7 \| good	28.002 \| good	0.139 \| good	2.465 \| good	0.104 \| good
2025-09-18T21:00:00.000Z	25 \| good	3.886 \| good	7.091 \| good	27.008 \| good	0.147 \| good	2.471 \| good	0.105 \| good
2025-09-18T22:00:00.000Z	25 \| good	4.073 \| good	6.948 \| good	26.945 \| good	0.154 \| good	2.853 \| good	0.105 \| good
2025-09-18T23:00:00.000Z	27 \| good	4.556 \| good	7.307 \| good	26.952 \| good	0.146 \| good	3.106 \| good	0.105 \| good
2025-09-19T00:00:00.000Z	27 \| good	4.689 \| good	7.47 \| good	27.061 \| good	0.138 \| good	3.202 \| good	0.105 \| good
2025-09-19T01:00:00.000Z	27 \| good	4.678 \| good	7.76 \| good	25.942 \| good	0.125 \| good	3.22 \| good	0.106 \| good
2025-09-19T02:00:00.000Z	27 \| good	4.65 \| good	8.14 \| good	25.046 \| good	0.14 \| good	3.107 \| good	0.106 \| good
2025-09-19T03:00:00.000Z	27 \| good	4.951 \| good	7.861 \| good	24.281 \| good	0.157 \| good	3.23 \| good	0.107 \| good
2025-09-19T04:00:00.000Z	33 \| good	6.325 \| good	8.603 \| good	23.557 \| good	0.153 \| good	3.375 \| good	0.108 \| good
2025-09-19T05:00:00.000Z	38 \| good	7.429 \| good	9.646 \| good	22.001 \| good	0.154 \| good	3.734 \| good	0.108 \| good
2025-09-19T06:00:00.000Z	49 \| good	8.518 \| good	11.251 \| good	20.907 \| good	0.177 \| good	4.909 \| good	0.109 \| good
2025-09-19T07:00:00.000Z	52 \| moderate	9.543 \| good	11.947 \| good	18.721 \| good	0.213 \| good	6.597 \| good	0.113 \| good
2025-09-19T08:00:00.000Z	49 \| good	8.587 \| good	11.734 \| good	21.84 \| good	0.212 \| good	6.074 \| good	0.114 \| good
2025-09-19T09:00:00.000Z	44 \| good	7.504 \| good	10.453 \| good	23.868 \| good	0.226 \| good	5.052 \| good	0.114 \| good
2025-09-19T10:00:00.000Z	38 \| good	7.093 \| good	9.306 \| good	27.592 \| good	0.184 \| good	3.374 \| good	0.113 \| good
2025-09-19T11:00:00.000Z	33 \| good	5.585 \| good	8.658 \| good	32.502 \| good	0.172 \| good	2.514 \| good	0.113 \| good
2025-09-19T12:00:00.000Z	35 \| good	4.869 \| good	8.689 \| good	38.059 \| good	0.16 \| good	1.766 \| good	0.115 \| good
2025-09-19T13:00:00.000Z	39 \| good	4.962 \| good	8.604 \| good	41.716 \| good	0.162 \| good	1.4 \| good	0.115 \| good

Current air quality index in Horsham, West Sussex today

Common air pollutants in Horsham, West Sussex

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Horsham, West Sussex air quality forecast and history

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Horsham, West Sussex

Air quality in nearby cities

Southwater, West Sussex

Crawley, West Sussex

Cranleigh, Surrey

Horley, Surrey

Haywards Heath, West Sussex

Burgess Hill, West Sussex

How accurate is West Sussex, UK air quality data?

Air quality levels in UK

Frequently asked questions

How frequently does the air quality data for Horsham, West Sussex get updated?

What time in the past 24 hours saw the poorest air quality in Horsham, West Sussex?

When was air quality in Horsham, West Sussex the best over the past 24 hours?

What is the air quality in Horsham, West Sussex right now?

What pollutant is most frequently found in Horsham, West Sussex?

What can I do if the air quality in Horsham, West Sussex is poor?

What is the PM2.5 concentration in Horsham, West Sussex right now?

What is the current level of PM10 in Horsham, West Sussex?

What is the current level of carbon monoxide (CO) in Horsham, West Sussex?

What is the current level of sulfur dioxide (SO2) in Horsham, West Sussex?

What is the current level of ozone (O3) in Horsham, West Sussex?

What is the current level of nitrogen dioxide (NO2) in Horsham, West Sussex?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 concentration in Horsham, West Sussex right now?

What is the current level of PM₁₀ in Horsham, West Sussex?

What is the current level of sulfur dioxide (SO₂) in Horsham, West Sussex?

What is the current level of ozone (O₃) in Horsham, West Sussex?

What is the current level of nitrogen dioxide (NO₂) in Horsham, West Sussex?