What are the current PM10 levels at Colesville, Maryland?

The current PM10 levels in Colesville, Maryland are 48.278 μg/m3.

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

The current sulfur dioxide (SO2) levels in Colesville, Maryland are 0.447 ppb.

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

The current ozone (O3) levels at Colesville, Maryland is 33.759 ppm.

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

The current nitrogen dioxide (NO2) levels at Colesville, Maryland is 10.105 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 10.007 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)

10.01 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

48.28 μg/m³

155

255

425

605+

Ozone (O₃)

33.76 ppb

201

201+

Sulfur Dioxide (SO₂)

0.45 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

10.11 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.14 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Colesville, Maryland

Get Live Pollen Counts

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
2026-01-21T03:00:00.000Z	38 \| good	6.838 \| good	29.976 \| good	17.276 \| good	2.725 \| good	17.947 \| good	0.244 \| good
2026-01-21T04:00:00.000Z	24 \| good	3.839 \| good	16.478 \| good	25.667 \| good	0.285 \| good	12.923 \| good	0.239 \| good
2026-01-21T05:00:00.000Z	27 \| good	4.501 \| good	19.811 \| good	19.829 \| good	0.559 \| good	18.17 \| good	0.283 \| good
2026-01-21T06:00:00.000Z	27 \| good	4.776 \| good	21.24 \| good	13.941 \| good	0.604 \| good	23.898 \| good	0.386 \| good
2026-01-21T07:00:00.000Z	27 \| good	4.799 \| good	21.084 \| good	11.425 \| good	0.666 \| good	25.594 \| good	0.384 \| good
2026-01-21T08:00:00.000Z	33 \| good	6.316 \| good	27.371 \| good	6.826 \| good	0.754 \| good	30.168 \| good	0.418 \| good
2026-01-21T09:00:00.000Z	38 \| good	6.957 \| good	30.183 \| good	3.836 \| good	0.456 \| good	33.782 \| good	0.413 \| good
2026-01-21T10:00:00.000Z	38 \| good	7.285 \| good	33.74 \| good	2.814 \| good	0.335 \| good	33.702 \| good	0.359 \| good
2026-01-21T11:00:00.000Z	38 \| good	6.746 \| good	29.199 \| good	3.473 \| good	0.845 \| good	29.394 \| good	0.387 \| good
2026-01-21T12:00:00.000Z	33 \| good	6.413 \| good	25.068 \| good	2.333 \| good	0.79 \| good	33.165 \| good	0.525 \| good
2026-01-21T13:00:00.000Z	38 \| good	6.95 \| good	29.824 \| good	2.788 \| good	0.792 \| good	33.109 \| good	0.566 \| good
2026-01-21T14:00:00.000Z	38 \| good	6.969 \| good	31.205 \| good	2.666 \| good	0.796 \| good	32.673 \| good	0.57 \| good
2026-01-21T15:00:00.000Z	38 \| good	7.458 \| good	32.473 \| good	8.711 \| good	1.103 \| good	26.824 \| good	0.449 \| good
2026-01-21T16:00:00.000Z	38 \| good	7.439 \| good	32.984 \| good	15.929 \| good	0.689 \| good	17.904 \| good	0.352 \| good
2026-01-21T17:00:00.000Z	33 \| good	6.237 \| good	26.94 \| good	18.754 \| good	0.632 \| good	15.979 \| good	0.326 \| good
2026-01-21T18:00:00.000Z	33 \| good	5.822 \| good	26.469 \| good	26.419 \| good	0.63 \| good	6.277 \| good	0.205 \| good
2026-01-21T19:00:00.000Z	38 \| good	6.516 \| good	31.105 \| good	27.752 \| good	0.698 \| good	5.865 \| good	0.162 \| good
2026-01-21T20:00:00.000Z	33 \| good	6.088 \| good	22.319 \| good	32.537 \| good	0.701 \| good	4.971 \| good	0.159 \| good
2026-01-21T21:00:00.000Z	33 \| good	5.408 \| good	23.997 \| good	35.615 \| good	0.754 \| good	6.161 \| good	0.168 \| good
2026-01-21T22:00:00.000Z	33 \| good	4.971 \| good	24.455 \| good	36.242 \| good	0.64 \| good	8.041 \| good	0.187 \| good
2026-01-21T23:00:00.000Z	32 \| good	4.848 \| good	20.068 \| good	34.78 \| good	0.537 \| good	9.294 \| good	0.187 \| good
2026-01-22T00:00:00.000Z	31 \| good	4.787 \| good	20.963 \| good	32.938 \| good	0.411 \| good	13.221 \| good	0.25 \| good
2026-01-22T01:00:00.000Z	33 \| good	6.31 \| good	26.914 \| good	30.442 \| good	0.443 \| good	13.581 \| good	0.262 \| good
2026-01-22T02:00:00.000Z	38 \| good	7.296 \| good	31.285 \| good	31.262 \| good	0.422 \| good	13.001 \| good	0.219 \| good
2026-01-22T03:00:00.000Z	38 \| good	6.861 \| good	30.431 \| good	30.959 \| good	0.417 \| good	9.611 \| good	0.189 \| good
2026-01-22T04:00:00.000Z	44 \| good	8.081 \| good	31.147 \| good	31.336 \| good	0.61 \| good	9.277 \| good	0.169 \| good
2026-01-22T05:00:00.000Z	44 \| good	8.307 \| good	34.574 \| good	30.915 \| good	0.984 \| good	9.799 \| good	0.169 \| good
2026-01-22T06:00:00.000Z	49 \| good	9.134 \| good	39.499 \| good	30.93 \| good	1.039 \| good	8.151 \| good	0.169 \| good
2026-01-22T07:00:00.000Z	49 \| good	9.455 \| good	39.03 \| good	31.304 \| good	0.742 \| good	8.097 \| good	0.169 \| good
2026-01-22T08:00:00.000Z	52 \| moderate	10.002 \| good	41.308 \| good	31.056 \| good	0.931 \| good	8.434 \| good	0.168 \| good
2026-01-22T09:00:00.000Z	54 \| moderate	11.355 \| good	52.881 \| good	30.843 \| good	0.84 \| good	9.444 \| good	0.169 \| good
2026-01-22T10:00:00.000Z	58 \| moderate	12.77 \| fine	59.057 \| fine	29.835 \| good	0.829 \| good	9.231 \| good	0.187 \| good
2026-01-22T11:00:00.000Z	58 \| moderate	12.897 \| fine	55.46 \| fine	30.26 \| good	0.732 \| good	9.398 \| good	0.218 \| good
2026-01-22T12:00:00.000Z	62 \| moderate	14.507 \| fine	61.217 \| fine	27.546 \| good	0.785 \| good	13.592 \| good	0.243 \| good
2026-01-22T13:00:00.000Z	62 \| moderate	14.775 \| fine	65.123 \| fine	23.24 \| good	0.733 \| good	16.925 \| good	0.28 \| good
2026-01-22T14:00:00.000Z	64 \| moderate	15.516 \| fine	59.215 \| fine	24.692 \| good	0.835 \| good	19.31 \| good	0.281 \| good
2026-01-22T15:00:00.000Z	67 \| moderate	17.607 \| fine	70.889 \| fine	22.426 \| good	0.76 \| good	22.901 \| good	0.336 \| good
2026-01-22T16:00:00.000Z	64 \| moderate	15.816 \| fine	63.69 \| fine	27.088 \| good	0.83 \| good	15.884 \| good	0.297 \| good
2026-01-22T17:00:00.000Z	62 \| moderate	14.513 \| fine	46.761 \| good	30.198 \| good	0.658 \| good	9.782 \| good	0.216 \| good
2026-01-22T18:00:00.000Z	56 \| moderate	11.674 \| good	46.221 \| good	33.932 \| good	0.551 \| good	6.864 \| good	0.185 \| good
2026-01-22T19:00:00.000Z	54 \| moderate	10.911 \| good	47 \| good	35.995 \| good	0.459 \| good	4.655 \| good	0.149 \| good
2026-01-22T20:00:00.000Z	49 \| good	8.597 \| good	35.522 \| good	37.962 \| good	0.423 \| good	4.959 \| good	0.143 \| good
2026-01-22T21:00:00.000Z	44 \| good	7.831 \| good	31.978 \| good	40.329 \| good	0.453 \| good	3.714 \| good	0.143 \| good
2026-01-22T22:00:00.000Z	44 \| good	7.552 \| good	41.663 \| good	39.367 \| good	0.478 \| good	4.506 \| good	0.143 \| good
2026-01-22T23:00:00.000Z	44 \| good	8.461 \| good	38.78 \| good	38.361 \| good	0.508 \| good	5.637 \| good	0.143 \| good
2026-01-23T00:00:00.000Z	52 \| moderate	9.744 \| good	44.733 \| good	35.704 \| good	0.402 \| good	7.711 \| good	0.143 \| good
2026-01-23T01:00:00.000Z	45 \| good	8.463 \| good	48.801 \| good	35.363 \| good	0.389 \| good	8.567 \| good	0.151 \| good
2026-01-23T02:00:00.000Z	52 \| moderate	10.007 \| good	48.278 \| good	33.759 \| good	0.447 \| good	10.105 \| good	0.143 \| good
2026-01-23T02:00:00.000Z	52 \| moderate	10.007 \| good	48.278 \| good	33.759 \| good	0.447 \| good	10.105 \| good	0.143 \| good
2026-01-23T03:00:00.000Z	27 \| good	4.95 \| good	20.997 \| good	28.243 \| good	3.19 \| good	21.876 \| good	0.292 \| good
2026-01-23T04:00:00.000Z	27 \| good	4.977 \| good	21.026 \| good	25.453 \| good	3.192 \| good	19.419 \| good	0.274 \| good
2026-01-23T05:00:00.000Z	33 \| good	5.876 \| good	25.013 \| good	23.669 \| good	3.194 \| good	16.962 \| good	0.255 \| good
2026-01-23T06:00:00.000Z	38 \| good	6.978 \| good	30.944 \| good	18.122 \| good	3.196 \| good	14.505 \| good	0.236 \| good
2026-01-23T07:00:00.000Z	38 \| good	7.107 \| good	31.982 \| good	13.37 \| good	3.259 \| good	12.654 \| good	0.224 \| good
2026-01-23T08:00:00.000Z	38 \| good	7.199 \| good	31.931 \| good	9.103 \| good	3.323 \| good	10.803 \| good	0.211 \| good
2026-01-23T09:00:00.000Z	44 \| good	7.863 \| good	33.956 \| good	7.976 \| good	3.386 \| good	8.951 \| good	0.199 \| good
2026-01-23T10:00:00.000Z	44 \| good	7.915 \| good	34.924 \| good	5.001 \| good	3.729 \| good	11.835 \| good	0.22 \| good
2026-01-23T11:00:00.000Z	44 \| good	8.297 \| good	36.874 \| good	1.619 \| good	4.073 \| good	14.718 \| good	0.24 \| good
2026-01-23T12:00:00.000Z	49 \| good	9.405 \| good	41.879 \| good	1.052 \| good	4.416 \| good	17.602 \| good	0.261 \| good
2026-01-23T13:00:00.000Z	54 \| moderate	10.824 \| good	47.903 \| good	4.867 \| good	4.404 \| good	16.623 \| good	0.271 \| good
2026-01-23T14:00:00.000Z	54 \| moderate	11.222 \| good	49.894 \| good	12.448 \| good	4.391 \| good	15.643 \| good	0.281 \| good
2026-01-23T15:00:00.000Z	56 \| moderate	11.564 \| good	50.914 \| good	19.424 \| good	4.379 \| good	14.664 \| good	0.291 \| good
2026-01-23T16:00:00.000Z	33 \| good	5.894 \| good	26.893 \| good	27.772 \| good	4.091 \| good	11.115 \| good	0.254 \| good
2026-01-23T17:00:00.000Z	30 \| good	2.867 \| good	11.995 \| good	32.297 \| good	3.802 \| good	7.565 \| good	0.218 \| good
2026-01-23T18:00:00.000Z	31 \| good	3.589 \| good	15.961 \| good	34.395 \| good	3.514 \| good	4.016 \| good	0.181 \| good
2026-01-23T19:00:00.000Z	32 \| good	4.645 \| good	19.984 \| good	34.6 \| good	3.276 \| good	4.206 \| good	0.181 \| good
2026-01-23T20:00:00.000Z	35 \| good	4.422 \| good	18.991 \| good	37.735 \| good	3.039 \| good	4.396 \| good	0.181 \| good
2026-01-23T21:00:00.000Z	35 \| good	2.309 \| good	9.938 \| good	37.543 \| good	2.802 \| good	4.586 \| good	0.18 \| good
2026-01-23T22:00:00.000Z	32 \| good	1.511 \| good	6.014 \| good	35.08 \| good	2.558 \| good	4.798 \| good	0.174 \| good
2026-01-23T23:00:00.000Z	28 \| good	2.162 \| good	8.95 \| good	29.506 \| good	2.314 \| good	5.01 \| good	0.168 \| good
2026-01-24T00:00:00.000Z	26 \| good	1.888 \| good	7.931 \| good	27.698 \| good	2.07 \| good	5.221 \| good	0.162 \| good
2026-01-24T01:00:00.000Z	27 \| good	1.371 \| good	5.012 \| good	29.149 \| good	1.951 \| good	4.745 \| good	0.159 \| good
2026-01-24T02:00:00.000Z	27 \| good	1.182 \| good	4.955 \| good	28.875 \| good	1.831 \| good	4.268 \| good	0.156 \| good
2026-01-24T03:00:00.000Z	27 \| good	1.376 \| good	5.02 \| good	28.622 \| good	1.712 \| good	3.791 \| good	0.153 \| good
2026-01-24T04:00:00.000Z	25 \| good	1.441 \| good	5.977 \| good	26.96 \| good	1.505 \| good	3.196 \| good	0.148 \| good
2026-01-24T05:00:00.000Z	25 \| good	2.32 \| good	9.904 \| good	26.558 \| good	1.299 \| good	2.601 \| good	0.144 \| good
2026-01-24T06:00:00.000Z	22 \| good	2.949 \| good	11.977 \| good	24.454 \| good	1.093 \| good	2.006 \| good	0.139 \| good
2026-01-24T07:00:00.000Z	20 \| good	2.188 \| good	9.02 \| good	22.21 \| good	1.002 \| good	1.909 \| good	0.138 \| good
2026-01-24T08:00:00.000Z	21 \| good	1.503 \| good	6.015 \| good	22.774 \| good	0.912 \| good	1.812 \| good	0.138 \| good
2026-01-24T09:00:00.000Z	20 \| good	2.539 \| good	9.994 \| good	21.562 \| good	0.822 \| good	1.716 \| good	0.138 \| good
2026-01-24T10:00:00.000Z	19 \| good	1.675 \| good	6.984 \| good	21.064 \| good	0.826 \| good	2.133 \| good	0.14 \| good
2026-01-24T11:00:00.000Z	19 \| good	0.904 \| good	3.98 \| good	20.993 \| good	0.831 \| good	2.551 \| good	0.143 \| good
2026-01-24T12:00:00.000Z	20 \| good	1.781 \| good	7.014 \| good	21.536 \| good	0.835 \| good	2.969 \| good	0.146 \| good
2026-01-24T13:00:00.000Z	21 \| good	2.317 \| good	9.942 \| good	22.664 \| good	0.899 \| good	3.082 \| good	0.149 \| good
2026-01-24T14:00:00.000Z	21 \| good	2.198 \| good	8.978 \| good	22.574 \| good	0.962 \| good	3.195 \| good	0.152 \| good
2026-01-24T15:00:00.000Z	21 \| good	2.097 \| good	8.946 \| good	23.496 \| good	1.026 \| good	3.307 \| good	0.155 \| good
2026-01-24T16:00:00.000Z	20 \| good	1.602 \| good	6.967 \| good	22.368 \| good	1.13 \| good	3.149 \| good	0.155 \| good
2026-01-24T17:00:00.000Z	22 \| good	1.256 \| good	5.025 \| good	23.506 \| good	1.234 \| good	2.991 \| good	0.154 \| good
2026-01-24T18:00:00.000Z	22 \| good	1.58 \| good	6.031 \| good	23.702 \| good	1.338 \| good	2.833 \| good	0.154 \| good
2026-01-24T19:00:00.000Z	23 \| good	2.812 \| good	11.958 \| good	24.83 \| good	1.427 \| good	3.439 \| good	0.155 \| good
2026-01-24T20:00:00.000Z	24 \| good	3.252 \| good	13.99 \| good	25.878 \| good	1.515 \| good	4.044 \| good	0.156 \| good
2026-01-24T21:00:00.000Z	26 \| good	1.409 \| good	5.973 \| good	27.503 \| good	1.604 \| good	4.65 \| good	0.158 \| good
2026-01-24T22:00:00.000Z	23 \| good	1.229 \| good	4.984 \| good	24.986 \| good	1.762 \| good	5.367 \| good	0.162 \| good
2026-01-24T23:00:00.000Z	23 \| good	1.694 \| good	6.961 \| good	24.879 \| good	1.92 \| good	6.084 \| good	0.166 \| good
2026-01-25T00:00:00.000Z	27 \| good	4.653 \| good	4.85 \| good	26.938 \| good	2.084 \| good	6.789 \| good	0.169 \| good
2026-01-25T01:00:00.000Z	21 \| good	0.534 \| good	2.011 \| good	22.753 \| good	2.313 \| good	6.941 \| good	0.171 \| good
2026-01-25T02:00:00.000Z	19 \| good	1.007 \| good	4 \| good	21.361 \| good	2.547 \| good	7.082 \| good	0.172 \| good

Colesville

Empower business decisions with accurate air quality data

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

0.17ppm

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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Check live rankings of places in the USA affected by air pollution.

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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 03:00:00 on 2026-01-22.

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

The best air quality in Colesville, Maryland was recorded at 03:00:00 on 2026-01-22.

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

The real-time air quality index in Colesville, Maryland is 52, 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 10.007 μg/m³.

What are the current PM₁₀ levels at Colesville, Maryland?

The current PM₁₀ levels in Colesville, Maryland are 48.278 μg/m³.

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

The current carbon monoxide (CO) level in Colesville, Maryland is 0.143 ppm.

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

The current sulfur dioxide (SO₂) levels in Colesville, Maryland are 0.447 ppb.

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

The current ozone (O₃) levels at Colesville, Maryland is 33.759 ppm.

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

The current nitrogen dioxide (NO₂) levels at Colesville, Maryland is 10.105 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-01-21T03:00:00.000Z	38 \| good	6.838 \| good	29.976 \| good	17.276 \| good	2.725 \| good	17.947 \| good	0.244 \| good
2026-01-21T04:00:00.000Z	24 \| good	3.839 \| good	16.478 \| good	25.667 \| good	0.285 \| good	12.923 \| good	0.239 \| good
2026-01-21T05:00:00.000Z	27 \| good	4.501 \| good	19.811 \| good	19.829 \| good	0.559 \| good	18.17 \| good	0.283 \| good
2026-01-21T06:00:00.000Z	27 \| good	4.776 \| good	21.24 \| good	13.941 \| good	0.604 \| good	23.898 \| good	0.386 \| good
2026-01-21T07:00:00.000Z	27 \| good	4.799 \| good	21.084 \| good	11.425 \| good	0.666 \| good	25.594 \| good	0.384 \| good
2026-01-21T08:00:00.000Z	33 \| good	6.316 \| good	27.371 \| good	6.826 \| good	0.754 \| good	30.168 \| good	0.418 \| good
2026-01-21T09:00:00.000Z	38 \| good	6.957 \| good	30.183 \| good	3.836 \| good	0.456 \| good	33.782 \| good	0.413 \| good
2026-01-21T10:00:00.000Z	38 \| good	7.285 \| good	33.74 \| good	2.814 \| good	0.335 \| good	33.702 \| good	0.359 \| good
2026-01-21T11:00:00.000Z	38 \| good	6.746 \| good	29.199 \| good	3.473 \| good	0.845 \| good	29.394 \| good	0.387 \| good
2026-01-21T12:00:00.000Z	33 \| good	6.413 \| good	25.068 \| good	2.333 \| good	0.79 \| good	33.165 \| good	0.525 \| good
2026-01-21T13:00:00.000Z	38 \| good	6.95 \| good	29.824 \| good	2.788 \| good	0.792 \| good	33.109 \| good	0.566 \| good
2026-01-21T14:00:00.000Z	38 \| good	6.969 \| good	31.205 \| good	2.666 \| good	0.796 \| good	32.673 \| good	0.57 \| good
2026-01-21T15:00:00.000Z	38 \| good	7.458 \| good	32.473 \| good	8.711 \| good	1.103 \| good	26.824 \| good	0.449 \| good
2026-01-21T16:00:00.000Z	38 \| good	7.439 \| good	32.984 \| good	15.929 \| good	0.689 \| good	17.904 \| good	0.352 \| good
2026-01-21T17:00:00.000Z	33 \| good	6.237 \| good	26.94 \| good	18.754 \| good	0.632 \| good	15.979 \| good	0.326 \| good
2026-01-21T18:00:00.000Z	33 \| good	5.822 \| good	26.469 \| good	26.419 \| good	0.63 \| good	6.277 \| good	0.205 \| good
2026-01-21T19:00:00.000Z	38 \| good	6.516 \| good	31.105 \| good	27.752 \| good	0.698 \| good	5.865 \| good	0.162 \| good
2026-01-21T20:00:00.000Z	33 \| good	6.088 \| good	22.319 \| good	32.537 \| good	0.701 \| good	4.971 \| good	0.159 \| good
2026-01-21T21:00:00.000Z	33 \| good	5.408 \| good	23.997 \| good	35.615 \| good	0.754 \| good	6.161 \| good	0.168 \| good
2026-01-21T22:00:00.000Z	33 \| good	4.971 \| good	24.455 \| good	36.242 \| good	0.64 \| good	8.041 \| good	0.187 \| good
2026-01-21T23:00:00.000Z	32 \| good	4.848 \| good	20.068 \| good	34.78 \| good	0.537 \| good	9.294 \| good	0.187 \| good
2026-01-22T00:00:00.000Z	31 \| good	4.787 \| good	20.963 \| good	32.938 \| good	0.411 \| good	13.221 \| good	0.25 \| good
2026-01-22T01:00:00.000Z	33 \| good	6.31 \| good	26.914 \| good	30.442 \| good	0.443 \| good	13.581 \| good	0.262 \| good
2026-01-22T02:00:00.000Z	38 \| good	7.296 \| good	31.285 \| good	31.262 \| good	0.422 \| good	13.001 \| good	0.219 \| good
2026-01-22T03:00:00.000Z	38 \| good	6.861 \| good	30.431 \| good	30.959 \| good	0.417 \| good	9.611 \| good	0.189 \| good
2026-01-22T04:00:00.000Z	44 \| good	8.081 \| good	31.147 \| good	31.336 \| good	0.61 \| good	9.277 \| good	0.169 \| good
2026-01-22T05:00:00.000Z	44 \| good	8.307 \| good	34.574 \| good	30.915 \| good	0.984 \| good	9.799 \| good	0.169 \| good
2026-01-22T06:00:00.000Z	49 \| good	9.134 \| good	39.499 \| good	30.93 \| good	1.039 \| good	8.151 \| good	0.169 \| good
2026-01-22T07:00:00.000Z	49 \| good	9.455 \| good	39.03 \| good	31.304 \| good	0.742 \| good	8.097 \| good	0.169 \| good
2026-01-22T08:00:00.000Z	52 \| moderate	10.002 \| good	41.308 \| good	31.056 \| good	0.931 \| good	8.434 \| good	0.168 \| good
2026-01-22T09:00:00.000Z	54 \| moderate	11.355 \| good	52.881 \| good	30.843 \| good	0.84 \| good	9.444 \| good	0.169 \| good
2026-01-22T10:00:00.000Z	58 \| moderate	12.77 \| fine	59.057 \| fine	29.835 \| good	0.829 \| good	9.231 \| good	0.187 \| good
2026-01-22T11:00:00.000Z	58 \| moderate	12.897 \| fine	55.46 \| fine	30.26 \| good	0.732 \| good	9.398 \| good	0.218 \| good
2026-01-22T12:00:00.000Z	62 \| moderate	14.507 \| fine	61.217 \| fine	27.546 \| good	0.785 \| good	13.592 \| good	0.243 \| good
2026-01-22T13:00:00.000Z	62 \| moderate	14.775 \| fine	65.123 \| fine	23.24 \| good	0.733 \| good	16.925 \| good	0.28 \| good
2026-01-22T14:00:00.000Z	64 \| moderate	15.516 \| fine	59.215 \| fine	24.692 \| good	0.835 \| good	19.31 \| good	0.281 \| good
2026-01-22T15:00:00.000Z	67 \| moderate	17.607 \| fine	70.889 \| fine	22.426 \| good	0.76 \| good	22.901 \| good	0.336 \| good
2026-01-22T16:00:00.000Z	64 \| moderate	15.816 \| fine	63.69 \| fine	27.088 \| good	0.83 \| good	15.884 \| good	0.297 \| good
2026-01-22T17:00:00.000Z	62 \| moderate	14.513 \| fine	46.761 \| good	30.198 \| good	0.658 \| good	9.782 \| good	0.216 \| good
2026-01-22T18:00:00.000Z	56 \| moderate	11.674 \| good	46.221 \| good	33.932 \| good	0.551 \| good	6.864 \| good	0.185 \| good
2026-01-22T19:00:00.000Z	54 \| moderate	10.911 \| good	47 \| good	35.995 \| good	0.459 \| good	4.655 \| good	0.149 \| good
2026-01-22T20:00:00.000Z	49 \| good	8.597 \| good	35.522 \| good	37.962 \| good	0.423 \| good	4.959 \| good	0.143 \| good
2026-01-22T21:00:00.000Z	44 \| good	7.831 \| good	31.978 \| good	40.329 \| good	0.453 \| good	3.714 \| good	0.143 \| good
2026-01-22T22:00:00.000Z	44 \| good	7.552 \| good	41.663 \| good	39.367 \| good	0.478 \| good	4.506 \| good	0.143 \| good
2026-01-22T23:00:00.000Z	44 \| good	8.461 \| good	38.78 \| good	38.361 \| good	0.508 \| good	5.637 \| good	0.143 \| good
2026-01-23T00:00:00.000Z	52 \| moderate	9.744 \| good	44.733 \| good	35.704 \| good	0.402 \| good	7.711 \| good	0.143 \| good
2026-01-23T01:00:00.000Z	45 \| good	8.463 \| good	48.801 \| good	35.363 \| good	0.389 \| good	8.567 \| good	0.151 \| good
2026-01-23T02:00:00.000Z	52 \| moderate	10.007 \| good	48.278 \| good	33.759 \| good	0.447 \| good	10.105 \| good	0.143 \| good
2026-01-23T02:00:00.000Z	52 \| moderate	10.007 \| good	48.278 \| good	33.759 \| good	0.447 \| good	10.105 \| good	0.143 \| good
2026-01-23T03:00:00.000Z	27 \| good	4.95 \| good	20.997 \| good	28.243 \| good	3.19 \| good	21.876 \| good	0.292 \| good
2026-01-23T04:00:00.000Z	27 \| good	4.977 \| good	21.026 \| good	25.453 \| good	3.192 \| good	19.419 \| good	0.274 \| good
2026-01-23T05:00:00.000Z	33 \| good	5.876 \| good	25.013 \| good	23.669 \| good	3.194 \| good	16.962 \| good	0.255 \| good
2026-01-23T06:00:00.000Z	38 \| good	6.978 \| good	30.944 \| good	18.122 \| good	3.196 \| good	14.505 \| good	0.236 \| good
2026-01-23T07:00:00.000Z	38 \| good	7.107 \| good	31.982 \| good	13.37 \| good	3.259 \| good	12.654 \| good	0.224 \| good
2026-01-23T08:00:00.000Z	38 \| good	7.199 \| good	31.931 \| good	9.103 \| good	3.323 \| good	10.803 \| good	0.211 \| good
2026-01-23T09:00:00.000Z	44 \| good	7.863 \| good	33.956 \| good	7.976 \| good	3.386 \| good	8.951 \| good	0.199 \| good
2026-01-23T10:00:00.000Z	44 \| good	7.915 \| good	34.924 \| good	5.001 \| good	3.729 \| good	11.835 \| good	0.22 \| good
2026-01-23T11:00:00.000Z	44 \| good	8.297 \| good	36.874 \| good	1.619 \| good	4.073 \| good	14.718 \| good	0.24 \| good
2026-01-23T12:00:00.000Z	49 \| good	9.405 \| good	41.879 \| good	1.052 \| good	4.416 \| good	17.602 \| good	0.261 \| good
2026-01-23T13:00:00.000Z	54 \| moderate	10.824 \| good	47.903 \| good	4.867 \| good	4.404 \| good	16.623 \| good	0.271 \| good
2026-01-23T14:00:00.000Z	54 \| moderate	11.222 \| good	49.894 \| good	12.448 \| good	4.391 \| good	15.643 \| good	0.281 \| good
2026-01-23T15:00:00.000Z	56 \| moderate	11.564 \| good	50.914 \| good	19.424 \| good	4.379 \| good	14.664 \| good	0.291 \| good
2026-01-23T16:00:00.000Z	33 \| good	5.894 \| good	26.893 \| good	27.772 \| good	4.091 \| good	11.115 \| good	0.254 \| good
2026-01-23T17:00:00.000Z	30 \| good	2.867 \| good	11.995 \| good	32.297 \| good	3.802 \| good	7.565 \| good	0.218 \| good
2026-01-23T18:00:00.000Z	31 \| good	3.589 \| good	15.961 \| good	34.395 \| good	3.514 \| good	4.016 \| good	0.181 \| good
2026-01-23T19:00:00.000Z	32 \| good	4.645 \| good	19.984 \| good	34.6 \| good	3.276 \| good	4.206 \| good	0.181 \| good
2026-01-23T20:00:00.000Z	35 \| good	4.422 \| good	18.991 \| good	37.735 \| good	3.039 \| good	4.396 \| good	0.181 \| good
2026-01-23T21:00:00.000Z	35 \| good	2.309 \| good	9.938 \| good	37.543 \| good	2.802 \| good	4.586 \| good	0.18 \| good
2026-01-23T22:00:00.000Z	32 \| good	1.511 \| good	6.014 \| good	35.08 \| good	2.558 \| good	4.798 \| good	0.174 \| good
2026-01-23T23:00:00.000Z	28 \| good	2.162 \| good	8.95 \| good	29.506 \| good	2.314 \| good	5.01 \| good	0.168 \| good
2026-01-24T00:00:00.000Z	26 \| good	1.888 \| good	7.931 \| good	27.698 \| good	2.07 \| good	5.221 \| good	0.162 \| good
2026-01-24T01:00:00.000Z	27 \| good	1.371 \| good	5.012 \| good	29.149 \| good	1.951 \| good	4.745 \| good	0.159 \| good
2026-01-24T02:00:00.000Z	27 \| good	1.182 \| good	4.955 \| good	28.875 \| good	1.831 \| good	4.268 \| good	0.156 \| good
2026-01-24T03:00:00.000Z	27 \| good	1.376 \| good	5.02 \| good	28.622 \| good	1.712 \| good	3.791 \| good	0.153 \| good
2026-01-24T04:00:00.000Z	25 \| good	1.441 \| good	5.977 \| good	26.96 \| good	1.505 \| good	3.196 \| good	0.148 \| good
2026-01-24T05:00:00.000Z	25 \| good	2.32 \| good	9.904 \| good	26.558 \| good	1.299 \| good	2.601 \| good	0.144 \| good
2026-01-24T06:00:00.000Z	22 \| good	2.949 \| good	11.977 \| good	24.454 \| good	1.093 \| good	2.006 \| good	0.139 \| good
2026-01-24T07:00:00.000Z	20 \| good	2.188 \| good	9.02 \| good	22.21 \| good	1.002 \| good	1.909 \| good	0.138 \| good
2026-01-24T08:00:00.000Z	21 \| good	1.503 \| good	6.015 \| good	22.774 \| good	0.912 \| good	1.812 \| good	0.138 \| good
2026-01-24T09:00:00.000Z	20 \| good	2.539 \| good	9.994 \| good	21.562 \| good	0.822 \| good	1.716 \| good	0.138 \| good
2026-01-24T10:00:00.000Z	19 \| good	1.675 \| good	6.984 \| good	21.064 \| good	0.826 \| good	2.133 \| good	0.14 \| good
2026-01-24T11:00:00.000Z	19 \| good	0.904 \| good	3.98 \| good	20.993 \| good	0.831 \| good	2.551 \| good	0.143 \| good
2026-01-24T12:00:00.000Z	20 \| good	1.781 \| good	7.014 \| good	21.536 \| good	0.835 \| good	2.969 \| good	0.146 \| good
2026-01-24T13:00:00.000Z	21 \| good	2.317 \| good	9.942 \| good	22.664 \| good	0.899 \| good	3.082 \| good	0.149 \| good
2026-01-24T14:00:00.000Z	21 \| good	2.198 \| good	8.978 \| good	22.574 \| good	0.962 \| good	3.195 \| good	0.152 \| good
2026-01-24T15:00:00.000Z	21 \| good	2.097 \| good	8.946 \| good	23.496 \| good	1.026 \| good	3.307 \| good	0.155 \| good
2026-01-24T16:00:00.000Z	20 \| good	1.602 \| good	6.967 \| good	22.368 \| good	1.13 \| good	3.149 \| good	0.155 \| good
2026-01-24T17:00:00.000Z	22 \| good	1.256 \| good	5.025 \| good	23.506 \| good	1.234 \| good	2.991 \| good	0.154 \| good
2026-01-24T18:00:00.000Z	22 \| good	1.58 \| good	6.031 \| good	23.702 \| good	1.338 \| good	2.833 \| good	0.154 \| good
2026-01-24T19:00:00.000Z	23 \| good	2.812 \| good	11.958 \| good	24.83 \| good	1.427 \| good	3.439 \| good	0.155 \| good
2026-01-24T20:00:00.000Z	24 \| good	3.252 \| good	13.99 \| good	25.878 \| good	1.515 \| good	4.044 \| good	0.156 \| good
2026-01-24T21:00:00.000Z	26 \| good	1.409 \| good	5.973 \| good	27.503 \| good	1.604 \| good	4.65 \| good	0.158 \| good
2026-01-24T22:00:00.000Z	23 \| good	1.229 \| good	4.984 \| good	24.986 \| good	1.762 \| good	5.367 \| good	0.162 \| good
2026-01-24T23:00:00.000Z	23 \| good	1.694 \| good	6.961 \| good	24.879 \| good	1.92 \| good	6.084 \| good	0.166 \| good
2026-01-25T00:00:00.000Z	27 \| good	4.653 \| good	4.85 \| good	26.938 \| good	2.084 \| good	6.789 \| good	0.169 \| good
2026-01-25T01:00:00.000Z	21 \| good	0.534 \| good	2.011 \| good	22.753 \| good	2.313 \| good	6.941 \| good	0.171 \| good
2026-01-25T02:00:00.000Z	19 \| good	1.007 \| good	4 \| good	21.361 \| good	2.547 \| good	7.082 \| good	0.172 \| good

Real-time air quality index in Colesville, Maryland today

Common air pollutants in Colesville, Maryland

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Colesville, Maryland air quality forecast and history

Empower business decisions with accurate air quality data

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

Air quality in nearby cities

Cloverly, Maryland

Fairland, Maryland

White Oak, Maryland

Kemp Mill, Maryland

Glenmont, Maryland

Wheaton, Maryland

How accurate is Maryland, USA air quality data?

Air quality levels in US

Frequently asked questions

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

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

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

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

Which pollutant is found most often in Colesville, Maryland?

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

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

What are the current PM10 levels at Colesville, Maryland?

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

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

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

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

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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

What are the current PM₁₀ levels at Colesville, Maryland?

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

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

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