What are the current PM10 levels at Colesville, Maryland?

The current PM10 levels in Colesville, Maryland are 84.785 μg/m3.

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

The current sulfur dioxide (SO2) levels in Colesville, Maryland are 0.242 ppb.

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

The current ozone (O3) levels at Colesville, Maryland is 3.138 ppm.

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

The current nitrogen dioxide (NO2) levels at Colesville, Maryland is 17.316 ppb.

Real-time air quality index in Colesville, Maryland today

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

The measured PM2.5 levels in Colesville, Maryland at present are 18.901 μg/m3.

Stay updated with real-time air quality in Colesville, 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)

Moderate

Colesville, Maryland

Last updated: ... (Local time)

Common air pollutants in Colesville, Maryland

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

18.90 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

84.78 μg/m³

155

255

425

605+

Ozone (O₃)

3.14 ppb

201

201+

Sulfur Dioxide (SO₂)

0.24 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

17.32 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.34 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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Colesville, Maryland

Scroll To Air Quality Map

Track live Colesville, Maryland air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-03T12:00:00.000Z	38 \| good	7.202 \| good	31.467 \| good	27.149 \| good	0.361 \| good	8.452 \| good	0.198 \| good
2026-03-03T13:00:00.000Z	49 \| good	9.289 \| good	31.336 \| good	26.789 \| good	0.415 \| good	9.153 \| good	0.241 \| good
2026-03-03T14:00:00.000Z	38 \| good	6.795 \| good	25.666 \| good	25.753 \| good	0.242 \| good	10.897 \| good	0.231 \| good
2026-03-03T15:00:00.000Z	44 \| good	7.633 \| good	34.891 \| good	25.036 \| good	0.404 \| good	10.85 \| good	0.241 \| good
2026-03-03T16:00:00.000Z	58 \| moderate	12.517 \| fine	48.773 \| good	22.013 \| good	0.333 \| good	12.713 \| good	0.239 \| good
2026-03-03T17:00:00.000Z	56 \| moderate	12.209 \| fine	50.245 \| good	22.203 \| good	0.325 \| good	12.102 \| good	0.27 \| good
2026-03-03T18:00:00.000Z	52 \| moderate	9.512 \| good	40.393 \| good	19.618 \| good	0.426 \| good	12.998 \| good	0.403 \| good
2026-03-03T19:00:00.000Z	49 \| good	8.968 \| good	37.936 \| good	16.22 \| good	0.269 \| good	16.536 \| good	0.338 \| good
2026-03-03T20:00:00.000Z	49 \| good	8.847 \| good	38.853 \| good	15.296 \| good	0.298 \| good	19.658 \| good	0.378 \| good
2026-03-03T21:00:00.000Z	49 \| good	8.596 \| good	37.597 \| good	15.46 \| good	0.298 \| good	22.965 \| good	0.34 \| good
2026-03-03T22:00:00.000Z	44 \| good	8.44 \| good	37.075 \| good	15.269 \| good	0.27 \| good	23.212 \| good	0.353 \| good
2026-03-03T23:00:00.000Z	49 \| good	8.707 \| good	36.848 \| good	16.64 \| good	0.363 \| good	20.803 \| good	0.29 \| good
2026-03-04T00:00:00.000Z	44 \| good	7.928 \| good	32.938 \| good	17.423 \| good	0.342 \| good	19.157 \| good	0.289 \| good
2026-03-04T01:00:00.000Z	44 \| good	7.694 \| good	31.745 \| good	17.299 \| good	0.296 \| good	16.159 \| good	0.281 \| good
2026-03-04T02:00:00.000Z	44 \| good	8.25 \| good	35.938 \| good	17.337 \| good	0.304 \| good	14.826 \| good	0.233 \| good
2026-03-04T03:00:00.000Z	56 \| moderate	11.543 \| good	50.936 \| good	25.99 \| good	1.63 \| good	10.733 \| good	0.216 \| good
2026-03-04T04:00:00.000Z	44 \| good	8.266 \| good	40.071 \| good	16.476 \| good	0.304 \| good	11.968 \| good	0.205 \| good
2026-03-04T05:00:00.000Z	49 \| good	9.322 \| good	36.812 \| good	15.884 \| good	0.198 \| good	11.582 \| good	0.205 \| good
2026-03-04T06:00:00.000Z	49 \| good	8.639 \| good	36.157 \| good	16.163 \| good	0.43 \| good	11.126 \| good	0.195 \| good
2026-03-04T07:00:00.000Z	44 \| good	8.207 \| good	36.006 \| good	16.499 \| good	0.418 \| good	11.173 \| good	0.195 \| good
2026-03-04T08:00:00.000Z	44 \| good	7.982 \| good	32.643 \| good	11.819 \| good	0.212 \| good	12.012 \| good	0.195 \| good
2026-03-04T09:00:00.000Z	49 \| good	8.872 \| good	35.61 \| good	10.211 \| good	0.206 \| good	14.055 \| good	0.227 \| good
2026-03-04T10:00:00.000Z	44 \| good	8.043 \| good	33.426 \| good	6.947 \| good	0.213 \| good	15.928 \| good	0.236 \| good
2026-03-04T11:00:00.000Z	49 \| good	8.691 \| good	33.963 \| good	5.485 \| good	0.24 \| good	15.655 \| good	0.346 \| good
2026-03-04T12:00:00.000Z	49 \| good	8.996 \| good	36.198 \| good	4.665 \| good	0.262 \| good	16.632 \| good	0.389 \| good
2026-03-04T13:00:00.000Z	49 \| good	9.292 \| good	38.846 \| good	4.332 \| good	0.262 \| good	16.726 \| good	0.374 \| good
2026-03-04T14:00:00.000Z	52 \| moderate	10.371 \| good	43.83 \| good	5.142 \| good	0.358 \| good	17.732 \| good	0.441 \| good
2026-03-04T15:00:00.000Z	56 \| moderate	12.052 \| good	52.57 \| good	6.481 \| good	0.343 \| good	17.814 \| good	0.476 \| good
2026-03-04T16:00:00.000Z	58 \| moderate	13.12 \| fine	51.148 \| good	6.959 \| good	0.496 \| good	17.61 \| good	0.406 \| good
2026-03-04T17:00:00.000Z	60 \| moderate	14.478 \| fine	64.811 \| fine	7.975 \| good	0.543 \| good	15.447 \| good	0.388 \| good
2026-03-04T18:00:00.000Z	64 \| moderate	15.557 \| fine	78.579 \| fine	7.081 \| good	0.512 \| good	16.299 \| good	0.327 \| good
2026-03-04T19:00:00.000Z	60 \| moderate	13.749 \| fine	64.164 \| fine	6.795 \| good	0.55 \| good	19.464 \| good	0.344 \| good
2026-03-04T20:00:00.000Z	62 \| moderate	14.616 \| fine	64.522 \| fine	7.873 \| good	0.355 \| good	20.395 \| good	0.411 \| good
2026-03-04T21:00:00.000Z	58 \| moderate	12.717 \| fine	56.774 \| fine	8.228 \| good	0.272 \| good	20.013 \| good	0.381 \| good
2026-03-04T22:00:00.000Z	58 \| moderate	13.148 \| fine	59.093 \| fine	7.851 \| good	0.244 \| good	18.98 \| good	0.403 \| good
2026-03-04T23:00:00.000Z	58 \| moderate	13.033 \| fine	59.107 \| fine	6.358 \| good	0.333 \| good	18.459 \| good	0.411 \| good
2026-03-05T00:00:00.000Z	58 \| moderate	13.294 \| fine	53.59 \| good	4.735 \| good	0.274 \| good	20.094 \| good	0.413 \| good
2026-03-05T01:00:00.000Z	58 \| moderate	12.553 \| fine	55.518 \| fine	3.782 \| good	0.269 \| good	20.1 \| good	0.413 \| good
2026-03-05T02:00:00.000Z	58 \| moderate	13.375 \| fine	56.113 \| fine	4.017 \| good	0.193 \| good	19.343 \| good	0.369 \| good
2026-03-05T03:00:00.000Z	71 \| moderate	20.289 \| fine	89.062 \| fine	2.51 \| good	5.405 \| good	25.318 \| good	0.573 \| good
2026-03-05T04:00:00.000Z	60 \| moderate	13.959 \| fine	60.572 \| fine	3.031 \| good	0.207 \| good	18.416 \| good	0.361 \| good
2026-03-05T05:00:00.000Z	62 \| moderate	15.368 \| fine	64.307 \| fine	3.85 \| good	0.201 \| good	17.432 \| good	0.364 \| good
2026-03-05T06:00:00.000Z	67 \| moderate	18.124 \| fine	80.444 \| fine	4.053 \| good	0.459 \| good	17.885 \| good	0.312 \| good
2026-03-05T07:00:00.000Z	67 \| moderate	18.226 \| fine	78.548 \| fine	3.922 \| good	0.282 \| good	15.781 \| good	0.321 \| good
2026-03-05T08:00:00.000Z	69 \| moderate	18.844 \| fine	84.198 \| fine	2.886 \| good	0.378 \| good	17.04 \| good	0.342 \| good
2026-03-05T09:00:00.000Z	71 \| moderate	19.606 \| fine	87.214 \| fine	2.182 \| good	0.35 \| good	17.181 \| good	0.375 \| good
2026-03-05T10:00:00.000Z	69 \| moderate	18.901 \| fine	84.785 \| fine	3.138 \| good	0.242 \| good	17.316 \| good	0.342 \| good
2026-03-05T11:00:00.000Z	69 \| moderate	18.901 \| fine	84.785 \| fine	3.138 \| good	0.242 \| good	17.316 \| good	0.342 \| good
2026-03-05T12:00:00.000Z	62 \| moderate	15.323 \| fine	68.987 \| fine	11.11 \| good	1.234 \| good	13.322 \| good	0.293 \| good
2026-03-05T13:00:00.000Z	62 \| moderate	15.408 \| fine	69.064 \| fine	12.996 \| good	1.283 \| good	12.011 \| good	0.286 \| good
2026-03-05T14:00:00.000Z	66 \| moderate	17.192 \| fine	77.088 \| fine	21.352 \| good	1.332 \| good	10.701 \| good	0.28 \| good
2026-03-05T15:00:00.000Z	66 \| moderate	17.409 \| fine	77.147 \| fine	27.488 \| good	1.382 \| good	9.391 \| good	0.273 \| good
2026-03-05T16:00:00.000Z	66 \| moderate	16.528 \| fine	73.129 \| fine	34.224 \| good	1.542 \| good	8.242 \| good	0.264 \| good
2026-03-05T17:00:00.000Z	66 \| moderate	16.59 \| fine	73.103 \| fine	37.003 \| good	1.703 \| good	7.094 \| good	0.256 \| good
2026-03-05T18:00:00.000Z	62 \| moderate	15.353 \| fine	68.957 \| fine	39.761 \| good	1.863 \| good	5.945 \| good	0.247 \| good
2026-03-05T19:00:00.000Z	60 \| moderate	13.594 \| fine	61.073 \| fine	41.874 \| good	1.929 \| good	6.053 \| good	0.243 \| good
2026-03-05T20:00:00.000Z	58 \| moderate	13.28 \| fine	59.145 \| fine	40.329 \| good	1.995 \| good	6.161 \| good	0.238 \| good
2026-03-05T21:00:00.000Z	60 \| moderate	13.803 \| fine	61.198 \| fine	40.324 \| good	2.06 \| good	6.268 \| good	0.233 \| good
2026-03-05T22:00:00.000Z	71 \| moderate	20.054 \| fine	88.997 \| fine	35.322 \| good	2.092 \| good	10.831 \| good	0.26 \| good
2026-03-05T23:00:00.000Z	62 \| moderate	14.754 \| fine	65.124 \| fine	31.206 \| good	2.124 \| good	15.394 \| good	0.286 \| good
2026-03-06T00:00:00.000Z	60 \| moderate	13.72 \| fine	61.165 \| fine	30.864 \| good	2.156 \| good	19.956 \| good	0.312 \| good
2026-03-06T01:00:00.000Z	62 \| moderate	14.864 \| fine	67.113 \| fine	22.499 \| good	2.066 \| good	20.039 \| good	0.315 \| good
2026-03-06T02:00:00.000Z	64 \| moderate	15.647 \| fine	69.056 \| fine	13.644 \| good	1.976 \| good	20.123 \| good	0.318 \| good
2026-03-06T03:00:00.000Z	64 \| moderate	16.367 \| fine	72.956 \| fine	9.802 \| good	1.886 \| good	20.206 \| good	0.321 \| good
2026-03-06T04:00:00.000Z	64 \| moderate	15.911 \| fine	70.997 \| fine	9.085 \| good	1.799 \| good	17.849 \| good	0.295 \| good
2026-03-06T05:00:00.000Z	66 \| moderate	16.863 \| fine	74.981 \| fine	9.556 \| good	1.713 \| good	15.492 \| good	0.27 \| good
2026-03-06T06:00:00.000Z	64 \| moderate	16.056 \| fine	71.06 \| fine	9.991 \| good	1.626 \| good	13.135 \| good	0.244 \| good
2026-03-06T07:00:00.000Z	64 \| moderate	16.148 \| fine	71.102 \| fine	9.388 \| good	1.578 \| good	11.863 \| good	0.234 \| good
2026-03-06T08:00:00.000Z	67 \| moderate	17.599 \| fine	77.114 \| fine	9.393 \| good	1.53 \| good	10.592 \| good	0.224 \| good
2026-03-06T09:00:00.000Z	71 \| moderate	19.992 \| fine	87.121 \| fine	6.141 \| good	1.481 \| good	9.32 \| good	0.214 \| good
2026-03-06T10:00:00.000Z	69 \| moderate	19.183 \| fine	85.04 \| fine	6.301 \| good	1.538 \| good	11.638 \| good	0.246 \| good
2026-03-06T11:00:00.000Z	64 \| moderate	15.992 \| fine	71.009 \| fine	12.666 \| good	1.594 \| good	13.955 \| good	0.278 \| good
2026-03-06T12:00:00.000Z	62 \| moderate	14.783 \| fine	65.078 \| fine	16.089 \| good	1.651 \| good	16.272 \| good	0.31 \| good
2026-03-06T13:00:00.000Z	58 \| moderate	13.132 \| fine	59.103 \| fine	17.581 \| good	1.894 \| good	14.207 \| good	0.307 \| good
2026-03-06T14:00:00.000Z	60 \| moderate	13.898 \| fine	63.152 \| fine	19.153 \| good	2.138 \| good	12.142 \| good	0.304 \| good
2026-03-06T15:00:00.000Z	62 \| moderate	14.519 \| fine	65.191 \| fine	23.578 \| good	2.381 \| good	10.076 \| good	0.301 \| good
2026-03-06T16:00:00.000Z	64 \| moderate	15.519 \| fine	69.121 \| fine	25.569 \| good	2.554 \| good	9.266 \| good	0.28 \| good
2026-03-06T17:00:00.000Z	69 \| moderate	19.032 \| fine	84.957 \| fine	28.632 \| good	2.727 \| good	8.455 \| good	0.259 \| good
2026-03-06T18:00:00.000Z	69 \| moderate	19.363 \| fine	85.005 \| fine	30.346 \| good	2.9 \| good	7.645 \| good	0.238 \| good
2026-03-06T19:00:00.000Z	67 \| moderate	17.594 \| fine	77.064 \| fine	32.004 \| good	3.036 \| good	7.851 \| good	0.239 \| good
2026-03-06T20:00:00.000Z	66 \| moderate	17.159 \| fine	76.883 \| fine	31.154 \| good	3.172 \| good	8.058 \| good	0.239 \| good
2026-03-06T21:00:00.000Z	62 \| moderate	15.133 \| fine	67.067 \| fine	30.989 \| good	3.308 \| good	8.264 \| good	0.24 \| good
2026-03-06T22:00:00.000Z	66 \| moderate	17.101 \| fine	76.879 \| fine	29.456 \| good	3.068 \| good	10.259 \| good	0.25 \| good
2026-03-06T23:00:00.000Z	56 \| moderate	11.731 \| good	52.134 \| good	26.469 \| good	2.829 \| good	12.253 \| good	0.259 \| good
2026-03-07T00:00:00.000Z	60 \| moderate	13.637 \| fine	61.031 \| fine	24.076 \| good	2.589 \| good	14.247 \| good	0.269 \| good
2026-03-07T01:00:00.000Z	58 \| moderate	13.23 \| fine	59.078 \| fine	19.143 \| good	2.173 \| good	12.584 \| good	0.252 \| good
2026-03-07T02:00:00.000Z	56 \| moderate	11.595 \| good	51.029 \| good	17.267 \| good	1.758 \| good	10.921 \| good	0.234 \| good
2026-03-07T03:00:00.000Z	56 \| moderate	11.955 \| good	53.971 \| good	19.418 \| good	1.342 \| good	9.258 \| good	0.216 \| good
2026-03-07T04:00:00.000Z	54 \| moderate	10.824 \| good	48.09 \| good	22.319 \| good	1.213 \| good	8.113 \| good	0.206 \| good
2026-03-07T05:00:00.000Z	44 \| good	8.049 \| good	35.072 \| good	25.901 \| good	1.084 \| good	6.968 \| good	0.196 \| good
2026-03-07T06:00:00.000Z	58 \| moderate	12.899 \| fine	13.123 \| good	30.613 \| good	0.958 \| good	5.82 \| good	0.186 \| good
2026-03-07T07:00:00.000Z	27 \| good	5.48 \| good	23.083 \| good	18.893 \| good	0.911 \| good	5.519 \| good	0.181 \| good
2026-03-07T08:00:00.000Z	44 \| good	7.544 \| good	33.044 \| good	15.968 \| good	0.868 \| good	5.215 \| good	0.176 \| good
2026-03-07T09:00:00.000Z	44 \| good	8.485 \| good	37.142 \| good	17.376 \| good	0.824 \| good	4.911 \| good	0.171 \| good
2026-03-07T10:00:00.000Z	49 \| good	8.55 \| good	37.193 \| good	15.35 \| good	0.897 \| good	6.964 \| good	0.183 \| good
2026-03-07T11:00:00.000Z	52 \| moderate	9.673 \| good	43.052 \| good	16.42 \| good	0.969 \| good	9.017 \| good	0.195 \| good

Colesville

Empower business decisions with accurate air quality data

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

0.34ppm

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 Colesville, Maryland updated?

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

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

The worst air quality in Colesville, Maryland was recorded at 09:00:00 on 2026-03-05.

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

The best air quality in Colesville, Maryland was recorded at 01:00:00 on 2026-03-04.

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

The real-time air quality index in Colesville, Maryland is 69, currently categorized as Moderate.

Which pollutant is found most often in Colesville, Maryland?

The most common pollutant in Colesville, Maryland is PM2.5.

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

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

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

The measured PM_2.5 levels in Colesville, Maryland at present are 18.901 μg/m³.

What are the current PM₁₀ levels at Colesville, Maryland?

The current PM₁₀ levels in Colesville, Maryland are 84.785 μg/m³.

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

The current carbon monoxide (CO) level in Colesville, Maryland is 0.342 ppm.

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

The current sulfur dioxide (SO₂) levels in Colesville, Maryland are 0.242 ppb.

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

The current ozone (O₃) levels at Colesville, Maryland is 3.138 ppm.

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

The current nitrogen dioxide (NO₂) levels at Colesville, Maryland is 17.316 ppb.

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