What are the current PM10 levels at Ellicott City, Maryland?

The current PM10 levels in Ellicott City, Maryland are 28.98 μg/m3.

What are the current sulfur dioxide (SO2) levels at Ellicott City, Maryland?

The current sulfur dioxide (SO2) levels in Ellicott City, Maryland are 0.256 ppb.

What are the current ozone (O3) levels at Ellicott City, Maryland?

The current ozone (O3) levels at Ellicott City, Maryland is 27.287 ppm.

What are the current nitrogen dioxide (NO2) levels at Ellicott City, Maryland?

The current nitrogen dioxide (NO2) levels at Ellicott City, Maryland is 6.864 ppb.

Real-time air quality index in Ellicott City, Maryland today

Q: What are the current PM2.5 levels in Ellicott City, Maryland?

The measured PM2.5 levels in Ellicott City, Maryland at present are 4.519 μg/m3.

Stay updated with real-time air quality in Ellicott City, Maryland 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

Ellicott City, Maryland

Last updated: ... (Local time)

Common air pollutants in Ellicott City, Maryland

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

4.52 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

28.98 μg/m³

155

255

425

605+

Ozone (O₃)

27.29 ppb

201

201+

Sulfur Dioxide (SO₂)

0.26 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.86 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.17 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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Ellicott City, Maryland

Scroll To Air Quality Map

Track live Ellicott City, Maryland air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-05T13:00:00.000Z	66 \| moderate	17.184 \| fine	66.533 \| fine	3.142 \| good	0.207 \| good	16.286 \| good	0.341 \| good
2026-03-05T14:00:00.000Z	60 \| moderate	14.128 \| fine	40.003 \| good	4.8 \| good	0.241 \| good	12.324 \| good	0.378 \| good
2026-03-05T15:00:00.000Z	64 \| moderate	16.007 \| fine	60.551 \| fine	7.871 \| good	0.226 \| good	17.769 \| good	0.354 \| good
2026-03-05T16:00:00.000Z	66 \| moderate	16.789 \| fine	71.471 \| fine	10.697 \| good	0.247 \| good	16.967 \| good	0.328 \| good
2026-03-05T17:00:00.000Z	66 \| moderate	17.461 \| fine	59.009 \| fine	8.788 \| good	0.326 \| good	15.552 \| good	0.304 \| good
2026-03-05T18:00:00.000Z	67 \| moderate	17.745 \| fine	51.823 \| good	13.647 \| good	0.46 \| good	11.681 \| good	0.328 \| good
2026-03-05T19:00:00.000Z	71 \| moderate	20.163 \| fine	75.127 \| fine	15.772 \| good	0.397 \| good	10.724 \| good	0.341 \| good
2026-03-05T20:00:00.000Z	71 \| moderate	20.361 \| fine	84.971 \| fine	16.95 \| good	0.475 \| good	14.03 \| good	0.39 \| good
2026-03-05T21:00:00.000Z	67 \| moderate	17.75 \| fine	60.329 \| fine	18.335 \| good	0.501 \| good	15.303 \| good	0.404 \| good
2026-03-05T22:00:00.000Z	67 \| moderate	17.784 \| fine	56.982 \| fine	14.903 \| good	0.446 \| good	14.816 \| good	0.392 \| good
2026-03-05T23:00:00.000Z	67 \| moderate	18.3 \| fine	76.695 \| fine	19.313 \| good	0.436 \| good	15.497 \| good	0.405 \| good
2026-03-06T00:00:00.000Z	71 \| moderate	20.226 \| fine	76.358 \| fine	8.756 \| good	0.307 \| good	15.329 \| good	0.355 \| good
2026-03-06T01:00:00.000Z	62 \| moderate	15.302 \| fine	57.213 \| fine	16.524 \| good	0.367 \| good	17.585 \| good	0.303 \| good
2026-03-06T02:00:00.000Z	64 \| moderate	16.417 \| fine	46.477 \| good	16.446 \| good	0.375 \| good	17.461 \| good	0.316 \| good
2026-03-06T03:00:00.000Z	54 \| moderate	11.448 \| good	50.838 \| good	30.02 \| good	1.309 \| good	11.862 \| good	0.259 \| good
2026-03-06T04:00:00.000Z	66 \| moderate	16.656 \| fine	42.722 \| good	12.311 \| good	0.293 \| good	10.812 \| good	0.292 \| good
2026-03-06T05:00:00.000Z	67 \| moderate	18.188 \| fine	28.607 \| good	10.261 \| good	0.188 \| good	11.762 \| good	0.278 \| good
2026-03-06T06:00:00.000Z	64 \| moderate	15.972 \| fine	30.583 \| good	12.103 \| good	0.165 \| good	12.265 \| good	0.29 \| good
2026-03-06T07:00:00.000Z	67 \| moderate	17.759 \| fine	28.751 \| good	11.083 \| good	0.182 \| good	12.329 \| good	0.278 \| good
2026-03-06T08:00:00.000Z	64 \| moderate	15.836 \| fine	39.183 \| good	6.5 \| good	0.18 \| good	13.624 \| good	0.278 \| good
2026-03-06T09:00:00.000Z	60 \| moderate	14.16 \| fine	51.673 \| good	7.97 \| good	0.18 \| good	13.795 \| good	0.278 \| good
2026-03-06T10:00:00.000Z	49 \| good	8.552 \| good	25.836 \| good	8.367 \| good	0.185 \| good	13.883 \| good	0.278 \| good
2026-03-06T11:00:00.000Z	49 \| good	9.311 \| good	29.162 \| good	10.01 \| good	0.214 \| good	11.154 \| good	0.327 \| good
2026-03-06T12:00:00.000Z	52 \| moderate	9.621 \| good	21.336 \| good	13.228 \| good	0.25 \| good	10.471 \| good	0.316 \| good
2026-03-06T13:00:00.000Z	54 \| moderate	11.136 \| good	50.537 \| good	12.144 \| good	0.237 \| good	10.129 \| good	0.329 \| good
2026-03-06T14:00:00.000Z	54 \| moderate	11.227 \| good	42.869 \| good	15.998 \| good	0.283 \| good	10.729 \| good	0.292 \| good
2026-03-06T15:00:00.000Z	56 \| moderate	11.817 \| good	34.773 \| good	9.35 \| good	0.264 \| good	8.719 \| good	0.303 \| good
2026-03-06T16:00:00.000Z	33 \| good	6.421 \| good	25.765 \| good	17.562 \| good	0.239 \| good	8.546 \| good	0.315 \| good
2026-03-06T17:00:00.000Z	49 \| good	9.201 \| good	51.229 \| good	20.255 \| good	0.228 \| good	8.615 \| good	0.292 \| good
2026-03-06T18:00:00.000Z	52 \| moderate	10.072 \| good	44.488 \| good	19.959 \| good	0.281 \| good	8.935 \| good	0.254 \| good
2026-03-06T19:00:00.000Z	52 \| moderate	9.707 \| good	48.707 \| good	22.57 \| good	0.286 \| good	10.818 \| good	0.254 \| good
2026-03-06T20:00:00.000Z	44 \| good	8.405 \| good	35.117 \| good	20.564 \| good	0.21 \| good	10.771 \| good	0.265 \| good
2026-03-06T21:00:00.000Z	54 \| moderate	11.107 \| good	56.154 \| fine	21.931 \| good	0.181 \| good	8.973 \| good	0.241 \| good
2026-03-06T22:00:00.000Z	52 \| moderate	9.948 \| good	46.172 \| good	22.163 \| good	0.273 \| good	8.569 \| good	0.254 \| good
2026-03-06T23:00:00.000Z	52 \| moderate	10.37 \| good	52.478 \| good	18.961 \| good	0.323 \| good	8.322 \| good	0.278 \| good
2026-03-07T00:00:00.000Z	66 \| moderate	15.286 \| fine	86.231 \| fine	19.457 \| good	0.338 \| good	8.351 \| good	0.252 \| good
2026-03-07T01:00:00.000Z	54 \| moderate	11.48 \| good	57.425 \| fine	21.529 \| good	0.205 \| good	7.39 \| good	0.278 \| good
2026-03-07T02:00:00.000Z	54 \| moderate	10.834 \| good	42.706 \| good	25.525 \| good	0.32 \| good	7.402 \| good	0.241 \| good
2026-03-07T03:00:00.000Z	52 \| moderate	9.966 \| good	38.334 \| good	22.328 \| good	0.192 \| good	6.277 \| good	0.203 \| good
2026-03-07T04:00:00.000Z	52 \| moderate	9.771 \| good	33.747 \| good	25.304 \| good	0.219 \| good	6.382 \| good	0.203 \| good
2026-03-07T05:00:00.000Z	49 \| good	8.795 \| good	26.169 \| good	30.526 \| good	0.393 \| good	5.392 \| good	0.192 \| good
2026-03-07T06:00:00.000Z	38 \| good	7.262 \| good	21.835 \| good	30.814 \| good	0.245 \| good	4.411 \| good	0.192 \| good
2026-03-07T07:00:00.000Z	38 \| good	6.746 \| good	27.163 \| good	29.485 \| good	0.221 \| good	4.638 \| good	0.192 \| good
2026-03-07T08:00:00.000Z	44 \| good	7.598 \| good	27.249 \| good	29.303 \| good	0.227 \| good	3.916 \| good	0.192 \| good
2026-03-07T09:00:00.000Z	27 \| good	5.139 \| good	23.851 \| good	27.491 \| good	0.336 \| good	4.228 \| good	0.14 \| good
2026-03-07T10:00:00.000Z	27 \| good	4.513 \| good	18.973 \| good	27.536 \| good	0.241 \| good	4.811 \| good	0.165 \| good
2026-03-07T11:00:00.000Z	27 \| good	4.519 \| good	28.98 \| good	27.287 \| good	0.256 \| good	6.864 \| good	0.165 \| good
2026-03-07T12:00:00.000Z	26 \| good	3.55 \| good	10.997 \| good	27.649 \| good	0.236 \| good	5.267 \| good	0.178 \| good
2026-03-07T12:00:00.000Z	27 \| good	4.519 \| good	28.98 \| good	27.287 \| good	0.256 \| good	6.864 \| good	0.165 \| good
2026-03-07T13:00:00.000Z	44 \| good	7.607 \| good	33.75 \| good	22.523 \| good	1.342 \| good	10.808 \| good	0.204 \| good
2026-03-07T14:00:00.000Z	44 \| good	7.705 \| good	33.906 \| good	25.142 \| good	1.513 \| good	11.367 \| good	0.213 \| good
2026-03-07T15:00:00.000Z	44 \| good	8.021 \| good	35.061 \| good	25.74 \| good	1.683 \| good	11.926 \| good	0.222 \| good
2026-03-07T16:00:00.000Z	44 \| good	7.701 \| good	33.872 \| good	25.745 \| good	1.732 \| good	10.46 \| good	0.214 \| good
2026-03-07T17:00:00.000Z	49 \| good	9.382 \| good	41.909 \| good	24.539 \| good	1.781 \| good	8.995 \| good	0.205 \| good
2026-03-07T18:00:00.000Z	52 \| moderate	9.909 \| good	43.946 \| good	24.6 \| good	1.83 \| good	7.529 \| good	0.197 \| good
2026-03-07T19:00:00.000Z	54 \| moderate	11.25 \| good	49.83 \| good	28.15 \| good	1.699 \| good	7.504 \| good	0.192 \| good
2026-03-07T20:00:00.000Z	54 \| moderate	10.696 \| good	47.753 \| good	30.216 \| good	1.568 \| good	7.478 \| good	0.187 \| good
2026-03-07T21:00:00.000Z	56 \| moderate	11.935 \| good	53.687 \| good	31.023 \| good	1.437 \| good	7.453 \| good	0.183 \| good
2026-03-07T22:00:00.000Z	56 \| moderate	11.853 \| good	52.079 \| good	27.43 \| good	1.375 \| good	9.619 \| good	0.184 \| good
2026-03-07T23:00:00.000Z	60 \| moderate	13.524 \| fine	60.928 \| fine	19.596 \| good	1.313 \| good	11.786 \| good	0.185 \| good
2026-03-08T00:00:00.000Z	60 \| moderate	13.943 \| fine	62.875 \| fine	18.923 \| good	1.251 \| good	13.953 \| good	0.186 \| good
2026-03-08T01:00:00.000Z	64 \| moderate	16.025 \| fine	71.056 \| fine	16.287 \| good	1.297 \| good	11.574 \| good	0.166 \| good
2026-03-08T02:00:00.000Z	64 \| moderate	16.312 \| fine	72.617 \| fine	12.209 \| good	1.343 \| good	9.196 \| good	0.145 \| good
2026-03-08T03:00:00.000Z	56 \| moderate	12.409 \| fine	56.477 \| fine	14.623 \| good	1.389 \| good	6.817 \| good	0.125 \| good
2026-03-08T04:00:00.000Z	44 \| good	8.295 \| good	36.769 \| good	18.915 \| good	1.41 \| good	6.045 \| good	0.121 \| good
2026-03-08T05:00:00.000Z	38 \| good	7.324 \| good	31.976 \| good	20.22 \| good	1.431 \| good	5.274 \| good	0.117 \| good
2026-03-08T06:00:00.000Z	33 \| good	6.466 \| good	28.881 \| good	19.357 \| good	1.452 \| good	4.502 \| good	0.114 \| good
2026-03-08T07:00:00.000Z	33 \| good	5.911 \| good	26.5 \| good	17.426 \| good	1.315 \| good	4.14 \| good	0.111 \| good
2026-03-08T08:00:00.000Z	27 \| good	5.271 \| good	22.843 \| good	16.969 \| good	1.179 \| good	3.779 \| good	0.109 \| good
2026-03-08T09:00:00.000Z	33 \| good	5.676 \| good	24.811 \| good	19.28 \| good	1.043 \| good	3.418 \| good	0.106 \| good
2026-03-08T10:00:00.000Z	27 \| good	5.293 \| good	22.944 \| good	20.529 \| good	1.113 \| good	4.696 \| good	0.114 \| good
2026-03-08T11:00:00.000Z	33 \| good	5.933 \| good	26.581 \| good	19.467 \| good	1.183 \| good	5.975 \| good	0.122 \| good
2026-03-08T12:00:00.000Z	27 \| good	4.519 \| good	19.861 \| good	21.624 \| good	1.252 \| good	7.253 \| good	0.13 \| good
2026-03-08T13:00:00.000Z	23 \| good	3.793 \| good	16.791 \| good	25.052 \| good	1.363 \| good	8.798 \| good	0.149 \| good
2026-03-08T14:00:00.000Z	27 \| good	5.01 \| good	21.854 \| good	25.572 \| good	1.474 \| good	10.343 \| good	0.168 \| good
2026-03-08T15:00:00.000Z	27 \| good	5.248 \| good	22.984 \| good	25.081 \| good	1.584 \| good	11.888 \| good	0.187 \| good
2026-03-08T16:00:00.000Z	33 \| good	5.698 \| good	24.847 \| good	25.177 \| good	1.664 \| good	9.915 \| good	0.174 \| good
2026-03-08T17:00:00.000Z	33 \| good	6.478 \| good	28.972 \| good	27.501 \| good	1.744 \| good	7.942 \| good	0.161 \| good
2026-03-08T18:00:00.000Z	27 \| good	5.279 \| good	22.891 \| good	28.888 \| good	1.825 \| good	5.968 \| good	0.148 \| good
2026-03-08T19:00:00.000Z	38 \| good	6.789 \| good	30.078 \| good	25.236 \| good	1.725 \| good	6.165 \| good	0.15 \| good
2026-03-08T20:00:00.000Z	38 \| good	7.335 \| good	32.112 \| good	27.391 \| good	1.625 \| good	6.362 \| good	0.152 \| good
2026-03-08T21:00:00.000Z	44 \| good	8.221 \| good	36.032 \| good	27.74 \| good	1.525 \| good	6.558 \| good	0.154 \| good
2026-03-08T22:00:00.000Z	33 \| good	6.2 \| good	27.869 \| good	25.99 \| good	1.658 \| good	8.3 \| good	0.171 \| good
2026-03-08T23:00:00.000Z	33 \| good	5.718 \| good	24.854 \| good	24.828 \| good	1.791 \| good	10.041 \| good	0.188 \| good
2026-03-09T00:00:00.000Z	28 \| good	3.573 \| good	15.671 \| good	30.136 \| good	1.923 \| good	11.783 \| good	0.205 \| good
2026-03-09T01:00:00.000Z	24 \| good	4.246 \| good	18.6 \| good	26.334 \| good	1.983 \| good	12.402 \| good	0.21 \| good
2026-03-09T02:00:00.000Z	33 \| good	5.858 \| good	26.339 \| good	24.575 \| good	2.042 \| good	13.022 \| good	0.215 \| good
2026-03-09T03:00:00.000Z	38 \| good	7.451 \| good	32.81 \| good	21.718 \| good	2.102 \| good	13.642 \| good	0.221 \| good
2026-03-09T04:00:00.000Z	52 \| moderate	9.585 \| good	42.815 \| good	16.601 \| good	2.102 \| good	12.2 \| good	0.213 \| good
2026-03-09T05:00:00.000Z	52 \| moderate	10.071 \| good	44.944 \| good	13.709 \| good	2.102 \| good	10.758 \| good	0.206 \| good
2026-03-09T06:00:00.000Z	38 \| good	7.15 \| good	7.348 \| good	29.119 \| good	2.111 \| good	9.362 \| good	0.199 \| good
2026-03-09T07:00:00.000Z	54 \| moderate	10.624 \| good	46.996 \| good	7.975 \| good	2.154 \| good	9.277 \| good	0.196 \| good
2026-03-09T08:00:00.000Z	56 \| moderate	11.695 \| good	51.812 \| good	4.703 \| good	2.206 \| good	9.237 \| good	0.193 \| good
2026-03-09T09:00:00.000Z	62 \| moderate	15.261 \| fine	68.629 \| fine	2.426 \| good	2.258 \| good	9.198 \| good	0.191 \| good
2026-03-09T10:00:00.000Z	66 \| moderate	16.825 \| fine	74.625 \| fine	2.025 \| good	2.51 \| good	12.846 \| good	0.218 \| good
2026-03-09T11:00:00.000Z	67 \| moderate	18.431 \| fine	80.842 \| fine	1.327 \| good	2.762 \| good	16.494 \| good	0.245 \| good
2026-03-09T12:00:00.000Z	60 \| moderate	13.923 \| fine	14.163 \| good	11.886 \| good	3.038 \| good	20.454 \| good	0.274 \| good

Ellicott City

Empower business decisions with accurate air quality data

Ellicott City, Maryland air quality map: Real-time AQI near you

0.16ppm

How accurate is Maryland, USA air quality data?

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

Source: Ambee Data Sources

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Frequently asked questions

How frequently is the air quality data for Ellicott City, Maryland updated?

Air quality data for Ellicott City, Maryland is updated on an hourly basis.

When did Ellicott City, Maryland experience the worst air quality in the last 24 hours?

The worst air quality in Ellicott City, Maryland was recorded at 12:00:00 on 2026-03-07.

When did Ellicott City, Maryland have its best air quality in the last 24 hours?

The best air quality in Ellicott City, Maryland was recorded at 11:00:00 on 2026-03-07.

What is the real-time air quality index for Ellicott City, Maryland?

The real-time air quality index in Ellicott City, Maryland is 27, currently categorized as Good.

Which pollutant is found most often in Ellicott City, Maryland?

The most common pollutant in Ellicott City, Maryland is PM10.

What can I do if the air quality in Ellicott City, Maryland is poor?

If the air quality in Ellicott City, Maryland is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in Ellicott City, Maryland?

The measured PM_2.5 levels in Ellicott City, Maryland at present are 4.519 μg/m³.

What are the current PM₁₀ levels at Ellicott City, Maryland?

The current PM₁₀ levels in Ellicott City, Maryland are 28.98 μg/m³.

What are the current carbon monoxide (CO) levels at Ellicott City, Maryland?

The current carbon monoxide (CO) level in Ellicott City, Maryland is 0.165 ppm.

What are the current sulfur dioxide (SO₂) levels at Ellicott City, Maryland?

The current sulfur dioxide (SO₂) levels in Ellicott City, Maryland are 0.256 ppb.

What are the current ozone (O₃) levels at Ellicott City, Maryland?

The current ozone (O₃) levels at Ellicott City, Maryland is 27.287 ppm.

What are the current nitrogen dioxide (NO₂) levels at Ellicott City, Maryland?

The current nitrogen dioxide (NO₂) levels at Ellicott City, Maryland is 6.864 ppb.

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