What is the current level of PM10 in Gaithersburg, Maryland?

Gaithersburg, Maryland currently has a PM10 concentration of 34.598 μg/m3.

What is the current level of sulfur dioxide (SO2) in Gaithersburg, Maryland?

The current sulfur dioxide (SO2) concentration in Gaithersburg, Maryland is 0.54 ppb.

What is the current level of ozone (O3) in Gaithersburg, Maryland?

Gaithersburg, Maryland currently has an ozone (O3) concentration of 8.483 ppm.

What is the current level of nitrogen dioxide (NO2) in Gaithersburg, Maryland?

The current level of nitrogen dioxide (NO2) in Gaithersburg, Maryland is 17.257 ppb.

Current air quality index in Gaithersburg, Maryland today

Q: What is the PM2.5 concentration in Gaithersburg, Maryland right now?

Gaithersburg, Maryland currently has a PM2.5 concentration of 12.003 μg/m3.

Stay updated with real-time air quality in Gaithersburg, 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

Gaithersburg, Maryland

Last updated: ... (Local time)

Common air pollutants in Gaithersburg, Maryland

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

12.00 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

34.60 μg/m³

155

255

425

605+

Ozone (O₃)

8.48 ppb

201

201+

Sulfur Dioxide (SO₂)

0.54 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

17.26 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.43 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Gaithersburg, Maryland

Get Live Pollen Counts

Gaithersburg, Maryland

Scroll To Air Quality Map

Track live Gaithersburg, Maryland air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T09:00:00.000Z	27 \| good	3.574 \| good	13.719 \| good	28.511 \| good	0.215 \| good	3.494 \| good	0.14 \| good
2025-12-05T10:00:00.000Z	28 \| good	3.211 \| good	11.204 \| good	29.89 \| good	0.239 \| good	5.741 \| good	0.14 \| good
2025-12-05T11:00:00.000Z	26 \| good	2.642 \| good	10.672 \| good	28.46 \| good	0.308 \| good	6.703 \| good	0.18 \| good
2025-12-05T12:00:00.000Z	28 \| good	2.994 \| good	17.495 \| good	29.711 \| good	0.298 \| good	5.388 \| good	0.18 \| good
2025-12-05T13:00:00.000Z	27 \| good	2.877 \| good	10.194 \| good	29.178 \| good	0.217 \| good	7.893 \| good	0.239 \| good
2025-12-05T14:00:00.000Z	29 \| good	4.558 \| good	21.497 \| good	30.578 \| good	0.236 \| good	11.725 \| good	0.239 \| good
2025-12-05T15:00:00.000Z	27 \| good	3.033 \| good	10.703 \| good	29.026 \| good	0.231 \| good	9.517 \| good	0.22 \| good
2025-12-05T16:00:00.000Z	27 \| good	3.945 \| good	18.827 \| good	28.681 \| good	0.161 \| good	9.175 \| good	0.239 \| good
2025-12-05T17:00:00.000Z	28 \| good	3.674 \| good	16.994 \| good	30.12 \| good	0.189 \| good	8.842 \| good	0.22 \| good
2025-12-05T18:00:00.000Z	28 \| good	4.18 \| good	15.404 \| good	29.56 \| good	0.431 \| good	7.845 \| good	0.22 \| good
2025-12-05T19:00:00.000Z	38 \| good	7.319 \| good	10.478 \| good	26.547 \| good	0.192 \| good	9.255 \| good	0.241 \| good
2025-12-05T20:00:00.000Z	38 \| good	6.688 \| good	21.702 \| good	24.706 \| good	0.284 \| good	12.361 \| good	0.261 \| good
2025-12-05T21:00:00.000Z	44 \| good	7.725 \| good	25.806 \| good	25.563 \| good	0.27 \| good	14.927 \| good	0.243 \| good
2025-12-05T22:00:00.000Z	44 \| good	7.901 \| good	21.718 \| good	23.944 \| good	0.175 \| good	15.95 \| good	0.243 \| good
2025-12-05T23:00:00.000Z	33 \| good	6.003 \| good	17.949 \| good	21.97 \| good	0.184 \| good	19.009 \| good	0.283 \| good
2025-12-06T00:00:00.000Z	38 \| good	6.88 \| good	27.382 \| good	23.067 \| good	0.255 \| good	21.124 \| good	0.302 \| good
2025-12-06T01:00:00.000Z	52 \| moderate	10.04 \| good	25 \| good	22.16 \| good	0.225 \| good	24.913 \| good	0.281 \| good
2025-12-06T02:00:00.000Z	60 \| moderate	14.447 \| fine	49.299 \| good	21.502 \| good	0.321 \| good	23.879 \| good	0.281 \| good
2025-12-06T03:00:00.000Z	62 \| moderate	14.878 \| fine	35.035 \| good	20.562 \| good	0.265 \| good	15.615 \| good	0.281 \| good
2025-12-06T04:00:00.000Z	66 \| moderate	16.609 \| fine	69.74 \| fine	18.616 \| good	0.259 \| good	12.417 \| good	0.261 \| good
2025-12-06T05:00:00.000Z	64 \| moderate	15.562 \| fine	51.372 \| good	18.137 \| good	0.326 \| good	9.605 \| good	0.259 \| good
2025-12-06T06:00:00.000Z	56 \| moderate	12.363 \| fine	46.088 \| good	15.689 \| good	0.324 \| good	9.03 \| good	0.22 \| good
2025-12-06T07:00:00.000Z	56 \| moderate	11.88 \| good	50.286 \| good	15.26 \| good	0.376 \| good	12.801 \| good	0.22 \| good
2025-12-06T08:00:00.000Z	58 \| moderate	13.109 \| fine	55.016 \| fine	13.027 \| good	0.364 \| good	19.319 \| good	0.281 \| good
2025-12-06T09:00:00.000Z	62 \| moderate	15.423 \| fine	70.571 \| fine	13.334 \| good	0.364 \| good	25.914 \| good	0.261 \| good
2025-12-06T10:00:00.000Z	64 \| moderate	15.599 \| fine	62.284 \| fine	11.372 \| good	0.348 \| good	18.592 \| good	0.261 \| good
2025-12-06T11:00:00.000Z	64 \| moderate	15.687 \| fine	67.248 \| fine	12.61 \| good	0.345 \| good	18.516 \| good	0.261 \| good
2025-12-06T12:00:00.000Z	71 \| moderate	20.364 \| fine	79.531 \| fine	7.758 \| good	0.222 \| good	17.363 \| good	0.263 \| good
2025-12-06T13:00:00.000Z	67 \| moderate	18.271 \| fine	85.963 \| fine	8.7 \| good	0.217 \| good	17.828 \| good	0.281 \| good
2025-12-06T14:00:00.000Z	64 \| moderate	16.111 \| fine	70.383 \| fine	10.447 \| good	0.223 \| good	18.692 \| good	0.363 \| good
2025-12-06T15:00:00.000Z	66 \| moderate	17.094 \| fine	58.189 \| fine	11.636 \| good	0.275 \| good	16.165 \| good	0.36 \| good
2025-12-06T16:00:00.000Z	64 \| moderate	16.225 \| fine	65.547 \| fine	17.648 \| good	0.293 \| good	12.813 \| good	0.32 \| good
2025-12-06T17:00:00.000Z	58 \| moderate	12.574 \| fine	48.275 \| good	17.877 \| good	0.312 \| good	8.72 \| good	0.32 \| good
2025-12-06T18:00:00.000Z	54 \| moderate	10.832 \| good	41.734 \| good	18.243 \| good	0.465 \| good	6.396 \| good	0.283 \| good
2025-12-06T19:00:00.000Z	44 \| good	7.826 \| good	27.653 \| good	19.984 \| good	0.315 \| good	5.494 \| good	0.221 \| good
2025-12-06T20:00:00.000Z	49 \| good	8.583 \| good	14.829 \| good	21.582 \| good	0.29 \| good	5.887 \| good	0.2 \| good
2025-12-06T21:00:00.000Z	56 \| moderate	12.108 \| fine	55.367 \| fine	21.792 \| good	0.267 \| good	6.778 \| good	0.181 \| good
2025-12-06T22:00:00.000Z	60 \| moderate	14.392 \| fine	49.744 \| good	21.032 \| good	0.245 \| good	8.153 \| good	0.203 \| good
2025-12-06T23:00:00.000Z	58 \| moderate	10.327 \| good	69.877 \| fine	15.209 \| good	0.204 \| good	8.122 \| good	0.18 \| good
2025-12-07T00:00:00.000Z	64 \| moderate	14.727 \| fine	80.773 \| fine	13.808 \| good	0.203 \| good	12.992 \| good	0.297 \| good
2025-12-07T01:00:00.000Z	77 \| moderate	22.637 \| fine	105.143 \| fine	11.023 \| good	0.246 \| good	22.257 \| good	0.361 \| good
2025-12-07T02:00:00.000Z	73 \| moderate	21.273 \| fine	89.554 \| fine	13.291 \| good	0.314 \| good	16.78 \| good	0.436 \| good
2025-12-07T03:00:00.000Z	56 \| moderate	11.842 \| good	53.762 \| good	14.78 \| good	0.301 \| good	14.904 \| good	0.418 \| good
2025-12-07T04:00:00.000Z	66 \| moderate	17.153 \| fine	61.128 \| fine	16.076 \| good	0.502 \| good	12.195 \| good	0.458 \| good
2025-12-07T05:00:00.000Z	58 \| moderate	13.409 \| fine	67.454 \| fine	17.891 \| good	0.479 \| good	12.53 \| good	0.478 \| good
2025-12-07T06:00:00.000Z	54 \| moderate	10.969 \| good	41.7 \| good	18.647 \| good	0.566 \| good	16.68 \| good	0.46 \| good
2025-12-07T07:00:00.000Z	56 \| moderate	11.796 \| good	39.393 \| good	10.777 \| good	0.56 \| good	17.065 \| good	0.423 \| good
2025-12-07T08:00:00.000Z	56 \| moderate	12.003 \| good	34.598 \| good	8.483 \| good	0.54 \| good	17.257 \| good	0.428 \| good
2025-12-07T09:00:00.000Z	49 \| good	9.266 \| good	41.39 \| good	15.383 \| good	4.22 \| good	9.729 \| good	0.222 \| good
2025-12-07T10:00:00.000Z	54 \| moderate	10.867 \| good	48.348 \| good	12.455 \| good	4.349 \| good	11.894 \| good	0.238 \| good
2025-12-07T11:00:00.000Z	56 \| moderate	12.032 \| good	54.278 \| good	9.085 \| good	4.478 \| good	14.059 \| good	0.253 \| good
2025-12-07T12:00:00.000Z	58 \| moderate	12.876 \| fine	57.607 \| fine	8.411 \| good	4.607 \| good	16.224 \| good	0.268 \| good
2025-12-07T13:00:00.000Z	62 \| moderate	14.97 \| fine	66.84 \| fine	9.139 \| good	4.737 \| good	13.064 \| good	0.252 \| good
2025-12-07T14:00:00.000Z	58 \| moderate	13.494 \| fine	61.126 \| fine	17.386 \| good	4.868 \| good	9.903 \| good	0.235 \| good
2025-12-07T15:00:00.000Z	56 \| moderate	12.322 \| fine	55.245 \| fine	22.616 \| good	4.999 \| good	6.743 \| good	0.219 \| good
2025-12-07T16:00:00.000Z	58 \| moderate	12.818 \| fine	58.005 \| fine	25.821 \| good	4.904 \| good	6.268 \| good	0.21 \| good
2025-12-07T17:00:00.000Z	54 \| moderate	10.978 \| good	48.488 \| good	28.254 \| good	4.81 \| good	5.793 \| good	0.201 \| good
2025-12-07T18:00:00.000Z	52 \| moderate	9.554 \| good	42.553 \| good	30.512 \| good	4.715 \| good	5.317 \| good	0.192 \| good
2025-12-07T19:00:00.000Z	38 \| good	7.221 \| good	31.812 \| good	33.702 \| good	4.688 \| good	7.456 \| good	0.205 \| good
2025-12-07T20:00:00.000Z	38 \| good	6.956 \| good	30.771 \| good	34.249 \| good	4.66 \| good	9.594 \| good	0.218 \| good
2025-12-07T21:00:00.000Z	49 \| good	8.613 \| good	37.604 \| good	32.826 \| good	4.633 \| good	11.732 \| good	0.232 \| good
2025-12-07T22:00:00.000Z	52 \| moderate	9.752 \| good	43.444 \| good	26.616 \| good	4.951 \| good	17.438 \| good	0.315 \| good
2025-12-07T23:00:00.000Z	62 \| moderate	14.654 \| fine	65.778 \| fine	20.136 \| good	5.269 \| good	23.143 \| good	0.399 \| good
2025-12-08T00:00:00.000Z	64 \| moderate	16.099 \| fine	71.672 \| fine	16.496 \| good	5.587 \| good	28.848 \| good	0.483 \| good
2025-12-08T01:00:00.000Z	62 \| moderate	14.905 \| fine	66.308 \| fine	15.265 \| good	5.45 \| good	28.835 \| good	0.47 \| good
2025-12-08T02:00:00.000Z	62 \| moderate	14.838 \| fine	66.17 \| fine	15.233 \| good	5.314 \| good	28.822 \| good	0.456 \| good
2025-12-08T03:00:00.000Z	60 \| moderate	14.301 \| fine	63.958 \| fine	13.763 \| good	5.177 \| good	28.809 \| good	0.443 \| good
2025-12-08T04:00:00.000Z	56 \| moderate	12.35 \| fine	55.263 \| fine	17.366 \| good	4.591 \| good	24.71 \| good	0.392 \| good
2025-12-08T05:00:00.000Z	52 \| moderate	10.476 \| good	46.471 \| good	22.658 \| good	4.005 \| good	20.612 \| good	0.341 \| good
2025-12-08T06:00:00.000Z	52 \| moderate	9.88 \| good	43.672 \| good	24.736 \| good	3.418 \| good	16.513 \| good	0.291 \| good
2025-12-08T07:00:00.000Z	52 \| moderate	10.185 \| good	45.21 \| good	25.916 \| good	3.331 \| good	12.377 \| good	0.257 \| good
2025-12-08T08:00:00.000Z	27 \| good	4.567 \| good	19.83 \| good	28.748 \| good	3.243 \| good	8.241 \| good	0.223 \| good
2025-12-08T09:00:00.000Z	26 \| good	0.422 \| good	1.536 \| good	27.95 \| good	3.156 \| good	4.105 \| good	0.189 \| good
2025-12-08T10:00:00.000Z	24 \| good	0.664 \| good	2.638 \| good	26.299 \| good	2.29 \| good	3.74 \| good	0.176 \| good
2025-12-08T11:00:00.000Z	22 \| good	1.236 \| good	4.986 \| good	24.426 \| good	1.424 \| good	3.375 \| good	0.164 \| good
2025-12-08T12:00:00.000Z	21 \| good	1.938 \| good	8.02 \| good	23.485 \| good	0.559 \| good	3.01 \| good	0.151 \| good
2025-12-08T13:00:00.000Z	21 \| good	2.827 \| good	11.638 \| good	23.476 \| good	0.662 \| good	2.849 \| good	0.153 \| good
2025-12-08T14:00:00.000Z	22 \| good	1.946 \| good	8 \| good	24.08 \| good	0.766 \| good	2.688 \| good	0.155 \| good
2025-12-08T15:00:00.000Z	24 \| good	1.056 \| good	4.217 \| good	25.615 \| good	0.869 \| good	2.528 \| good	0.157 \| good
2025-12-08T16:00:00.000Z	24 \| good	0.665 \| good	2.328 \| good	26.205 \| good	0.944 \| good	2.327 \| good	0.155 \| good
2025-12-08T17:00:00.000Z	24 \| good	0.265 \| good	1 \| good	26.316 \| good	1.018 \| good	2.127 \| good	0.152 \| good
2025-12-08T18:00:00.000Z	25 \| good	0.434 \| good	1.607 \| good	26.648 \| good	1.092 \| good	1.927 \| good	0.15 \| good
2025-12-08T19:00:00.000Z	24 \| good	0.466 \| good	1.896 \| good	26.457 \| good	1.165 \| good	2.473 \| good	0.151 \| good
2025-12-08T20:00:00.000Z	24 \| good	0.747 \| good	2.896 \| good	26.381 \| good	1.238 \| good	3.018 \| good	0.152 \| good
2025-12-08T21:00:00.000Z	24 \| good	0.903 \| good	3.501 \| good	25.884 \| good	1.311 \| good	3.564 \| good	0.153 \| good
2025-12-08T22:00:00.000Z	21 \| good	0.676 \| good	2.396 \| good	22.888 \| good	1.458 \| good	7.822 \| good	0.183 \| good
2025-12-08T23:00:00.000Z	19 \| good	2.536 \| good	10.139 \| good	20.264 \| good	1.605 \| good	12.08 \| good	0.213 \| good
2025-12-09T00:00:00.000Z	16 \| good	2.592 \| good	10.422 \| good	17.176 \| good	1.752 \| good	16.338 \| good	0.242 \| good
2025-12-09T01:00:00.000Z	22 \| good	4.251 \| good	18.708 \| good	16.296 \| good	1.935 \| good	16.26 \| good	0.241 \| good
2025-12-09T02:00:00.000Z	33 \| good	6.222 \| good	27.392 \| good	13.123 \| good	2.119 \| good	16.182 \| good	0.24 \| good
2025-12-09T03:00:00.000Z	38 \| good	6.7 \| good	29.764 \| good	11.971 \| good	2.302 \| good	16.104 \| good	0.239 \| good
2025-12-09T04:00:00.000Z	38 \| good	7.332 \| good	32.31 \| good	11.461 \| good	2.494 \| good	15.287 \| good	0.234 \| good
2025-12-09T05:00:00.000Z	38 \| good	6.986 \| good	30.887 \| good	11.016 \| good	2.687 \| good	14.469 \| good	0.23 \| good
2025-12-09T06:00:00.000Z	56 \| moderate	11.528 \| good	12.821 \| good	17.774 \| good	2.887 \| good	13.69 \| good	0.226 \| good
2025-12-09T07:00:00.000Z	33 \| good	5.65 \| good	24.355 \| good	10.438 \| good	2.996 \| good	13.846 \| good	0.225 \| good
2025-12-09T08:00:00.000Z	27 \| good	4.854 \| good	21.266 \| good	9.24 \| good	3.114 \| good	14.041 \| good	0.224 \| good

Gaithersburg

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Gaithersburg, Maryland

0.44ppm

How accurate is Maryland, USA air quality data?

The air quality data for Maryland, USA 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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Check live rankings of places in the USA affected by air pollution.

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Frequently asked questions

How frequently does the air quality data for Gaithersburg, Maryland get updated?

Air quality updates for Gaithersburg, Maryland are available every hour.

What time in the past 24 hours saw the poorest air quality in Gaithersburg, Maryland?

Gaithersburg, Maryland experienced its worst air quality at 01:00:00, 2025-12-07.

When was air quality in Gaithersburg, Maryland the best over the past 24 hours?

The best air quality in Gaithersburg, Maryland was observed at 07:00:00 on 2025-12-06.

What is the air quality in Gaithersburg, Maryland right now?

The air quality in Gaithersburg, Maryland right now is Moderate, with an AQI of 56.

What pollutant is most frequently found in Gaithersburg, Maryland?

In Gaithersburg, Maryland, PM2.5 is the most frequently found pollutant.

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

When air quality in Gaithersburg, Maryland is compromised, staying indoors and wearing a mask can reduce health risks.

What is the PM_2.5 concentration in Gaithersburg, Maryland right now?

Gaithersburg, Maryland currently has a PM_2.5 concentration of 12.003 μg/m³.

What is the current level of PM₁₀ in Gaithersburg, Maryland?

Gaithersburg, Maryland currently has a PM₁₀ concentration of 34.598 μg/m³.

What is the current level of carbon monoxide (CO) in Gaithersburg, Maryland?

The current carbon monoxide (CO) level in Gaithersburg, Maryland is 0.428 ppm.

What is the current level of sulfur dioxide (SO₂) in Gaithersburg, Maryland?

The current sulfur dioxide (SO₂) concentration in Gaithersburg, Maryland is 0.54 ppb.

What is the current level of ozone (O₃) in Gaithersburg, Maryland?

Gaithersburg, Maryland currently has an ozone (O₃) concentration of 8.483 ppm.

What is the current level of nitrogen dioxide (NO₂) in Gaithersburg, Maryland?

The current level of nitrogen dioxide (NO₂) in Gaithersburg, Maryland is 17.257 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T09:00:00.000Z	27 \| good	3.574 \| good	13.719 \| good	28.511 \| good	0.215 \| good	3.494 \| good	0.14 \| good
2025-12-05T10:00:00.000Z	28 \| good	3.211 \| good	11.204 \| good	29.89 \| good	0.239 \| good	5.741 \| good	0.14 \| good
2025-12-05T11:00:00.000Z	26 \| good	2.642 \| good	10.672 \| good	28.46 \| good	0.308 \| good	6.703 \| good	0.18 \| good
2025-12-05T12:00:00.000Z	28 \| good	2.994 \| good	17.495 \| good	29.711 \| good	0.298 \| good	5.388 \| good	0.18 \| good
2025-12-05T13:00:00.000Z	27 \| good	2.877 \| good	10.194 \| good	29.178 \| good	0.217 \| good	7.893 \| good	0.239 \| good
2025-12-05T14:00:00.000Z	29 \| good	4.558 \| good	21.497 \| good	30.578 \| good	0.236 \| good	11.725 \| good	0.239 \| good
2025-12-05T15:00:00.000Z	27 \| good	3.033 \| good	10.703 \| good	29.026 \| good	0.231 \| good	9.517 \| good	0.22 \| good
2025-12-05T16:00:00.000Z	27 \| good	3.945 \| good	18.827 \| good	28.681 \| good	0.161 \| good	9.175 \| good	0.239 \| good
2025-12-05T17:00:00.000Z	28 \| good	3.674 \| good	16.994 \| good	30.12 \| good	0.189 \| good	8.842 \| good	0.22 \| good
2025-12-05T18:00:00.000Z	28 \| good	4.18 \| good	15.404 \| good	29.56 \| good	0.431 \| good	7.845 \| good	0.22 \| good
2025-12-05T19:00:00.000Z	38 \| good	7.319 \| good	10.478 \| good	26.547 \| good	0.192 \| good	9.255 \| good	0.241 \| good
2025-12-05T20:00:00.000Z	38 \| good	6.688 \| good	21.702 \| good	24.706 \| good	0.284 \| good	12.361 \| good	0.261 \| good
2025-12-05T21:00:00.000Z	44 \| good	7.725 \| good	25.806 \| good	25.563 \| good	0.27 \| good	14.927 \| good	0.243 \| good
2025-12-05T22:00:00.000Z	44 \| good	7.901 \| good	21.718 \| good	23.944 \| good	0.175 \| good	15.95 \| good	0.243 \| good
2025-12-05T23:00:00.000Z	33 \| good	6.003 \| good	17.949 \| good	21.97 \| good	0.184 \| good	19.009 \| good	0.283 \| good
2025-12-06T00:00:00.000Z	38 \| good	6.88 \| good	27.382 \| good	23.067 \| good	0.255 \| good	21.124 \| good	0.302 \| good
2025-12-06T01:00:00.000Z	52 \| moderate	10.04 \| good	25 \| good	22.16 \| good	0.225 \| good	24.913 \| good	0.281 \| good
2025-12-06T02:00:00.000Z	60 \| moderate	14.447 \| fine	49.299 \| good	21.502 \| good	0.321 \| good	23.879 \| good	0.281 \| good
2025-12-06T03:00:00.000Z	62 \| moderate	14.878 \| fine	35.035 \| good	20.562 \| good	0.265 \| good	15.615 \| good	0.281 \| good
2025-12-06T04:00:00.000Z	66 \| moderate	16.609 \| fine	69.74 \| fine	18.616 \| good	0.259 \| good	12.417 \| good	0.261 \| good
2025-12-06T05:00:00.000Z	64 \| moderate	15.562 \| fine	51.372 \| good	18.137 \| good	0.326 \| good	9.605 \| good	0.259 \| good
2025-12-06T06:00:00.000Z	56 \| moderate	12.363 \| fine	46.088 \| good	15.689 \| good	0.324 \| good	9.03 \| good	0.22 \| good
2025-12-06T07:00:00.000Z	56 \| moderate	11.88 \| good	50.286 \| good	15.26 \| good	0.376 \| good	12.801 \| good	0.22 \| good
2025-12-06T08:00:00.000Z	58 \| moderate	13.109 \| fine	55.016 \| fine	13.027 \| good	0.364 \| good	19.319 \| good	0.281 \| good
2025-12-06T09:00:00.000Z	62 \| moderate	15.423 \| fine	70.571 \| fine	13.334 \| good	0.364 \| good	25.914 \| good	0.261 \| good
2025-12-06T10:00:00.000Z	64 \| moderate	15.599 \| fine	62.284 \| fine	11.372 \| good	0.348 \| good	18.592 \| good	0.261 \| good
2025-12-06T11:00:00.000Z	64 \| moderate	15.687 \| fine	67.248 \| fine	12.61 \| good	0.345 \| good	18.516 \| good	0.261 \| good
2025-12-06T12:00:00.000Z	71 \| moderate	20.364 \| fine	79.531 \| fine	7.758 \| good	0.222 \| good	17.363 \| good	0.263 \| good
2025-12-06T13:00:00.000Z	67 \| moderate	18.271 \| fine	85.963 \| fine	8.7 \| good	0.217 \| good	17.828 \| good	0.281 \| good
2025-12-06T14:00:00.000Z	64 \| moderate	16.111 \| fine	70.383 \| fine	10.447 \| good	0.223 \| good	18.692 \| good	0.363 \| good
2025-12-06T15:00:00.000Z	66 \| moderate	17.094 \| fine	58.189 \| fine	11.636 \| good	0.275 \| good	16.165 \| good	0.36 \| good
2025-12-06T16:00:00.000Z	64 \| moderate	16.225 \| fine	65.547 \| fine	17.648 \| good	0.293 \| good	12.813 \| good	0.32 \| good
2025-12-06T17:00:00.000Z	58 \| moderate	12.574 \| fine	48.275 \| good	17.877 \| good	0.312 \| good	8.72 \| good	0.32 \| good
2025-12-06T18:00:00.000Z	54 \| moderate	10.832 \| good	41.734 \| good	18.243 \| good	0.465 \| good	6.396 \| good	0.283 \| good
2025-12-06T19:00:00.000Z	44 \| good	7.826 \| good	27.653 \| good	19.984 \| good	0.315 \| good	5.494 \| good	0.221 \| good
2025-12-06T20:00:00.000Z	49 \| good	8.583 \| good	14.829 \| good	21.582 \| good	0.29 \| good	5.887 \| good	0.2 \| good
2025-12-06T21:00:00.000Z	56 \| moderate	12.108 \| fine	55.367 \| fine	21.792 \| good	0.267 \| good	6.778 \| good	0.181 \| good
2025-12-06T22:00:00.000Z	60 \| moderate	14.392 \| fine	49.744 \| good	21.032 \| good	0.245 \| good	8.153 \| good	0.203 \| good
2025-12-06T23:00:00.000Z	58 \| moderate	10.327 \| good	69.877 \| fine	15.209 \| good	0.204 \| good	8.122 \| good	0.18 \| good
2025-12-07T00:00:00.000Z	64 \| moderate	14.727 \| fine	80.773 \| fine	13.808 \| good	0.203 \| good	12.992 \| good	0.297 \| good
2025-12-07T01:00:00.000Z	77 \| moderate	22.637 \| fine	105.143 \| fine	11.023 \| good	0.246 \| good	22.257 \| good	0.361 \| good
2025-12-07T02:00:00.000Z	73 \| moderate	21.273 \| fine	89.554 \| fine	13.291 \| good	0.314 \| good	16.78 \| good	0.436 \| good
2025-12-07T03:00:00.000Z	56 \| moderate	11.842 \| good	53.762 \| good	14.78 \| good	0.301 \| good	14.904 \| good	0.418 \| good
2025-12-07T04:00:00.000Z	66 \| moderate	17.153 \| fine	61.128 \| fine	16.076 \| good	0.502 \| good	12.195 \| good	0.458 \| good
2025-12-07T05:00:00.000Z	58 \| moderate	13.409 \| fine	67.454 \| fine	17.891 \| good	0.479 \| good	12.53 \| good	0.478 \| good
2025-12-07T06:00:00.000Z	54 \| moderate	10.969 \| good	41.7 \| good	18.647 \| good	0.566 \| good	16.68 \| good	0.46 \| good
2025-12-07T07:00:00.000Z	56 \| moderate	11.796 \| good	39.393 \| good	10.777 \| good	0.56 \| good	17.065 \| good	0.423 \| good
2025-12-07T08:00:00.000Z	56 \| moderate	12.003 \| good	34.598 \| good	8.483 \| good	0.54 \| good	17.257 \| good	0.428 \| good
2025-12-07T09:00:00.000Z	49 \| good	9.266 \| good	41.39 \| good	15.383 \| good	4.22 \| good	9.729 \| good	0.222 \| good
2025-12-07T10:00:00.000Z	54 \| moderate	10.867 \| good	48.348 \| good	12.455 \| good	4.349 \| good	11.894 \| good	0.238 \| good
2025-12-07T11:00:00.000Z	56 \| moderate	12.032 \| good	54.278 \| good	9.085 \| good	4.478 \| good	14.059 \| good	0.253 \| good
2025-12-07T12:00:00.000Z	58 \| moderate	12.876 \| fine	57.607 \| fine	8.411 \| good	4.607 \| good	16.224 \| good	0.268 \| good
2025-12-07T13:00:00.000Z	62 \| moderate	14.97 \| fine	66.84 \| fine	9.139 \| good	4.737 \| good	13.064 \| good	0.252 \| good
2025-12-07T14:00:00.000Z	58 \| moderate	13.494 \| fine	61.126 \| fine	17.386 \| good	4.868 \| good	9.903 \| good	0.235 \| good
2025-12-07T15:00:00.000Z	56 \| moderate	12.322 \| fine	55.245 \| fine	22.616 \| good	4.999 \| good	6.743 \| good	0.219 \| good
2025-12-07T16:00:00.000Z	58 \| moderate	12.818 \| fine	58.005 \| fine	25.821 \| good	4.904 \| good	6.268 \| good	0.21 \| good
2025-12-07T17:00:00.000Z	54 \| moderate	10.978 \| good	48.488 \| good	28.254 \| good	4.81 \| good	5.793 \| good	0.201 \| good
2025-12-07T18:00:00.000Z	52 \| moderate	9.554 \| good	42.553 \| good	30.512 \| good	4.715 \| good	5.317 \| good	0.192 \| good
2025-12-07T19:00:00.000Z	38 \| good	7.221 \| good	31.812 \| good	33.702 \| good	4.688 \| good	7.456 \| good	0.205 \| good
2025-12-07T20:00:00.000Z	38 \| good	6.956 \| good	30.771 \| good	34.249 \| good	4.66 \| good	9.594 \| good	0.218 \| good
2025-12-07T21:00:00.000Z	49 \| good	8.613 \| good	37.604 \| good	32.826 \| good	4.633 \| good	11.732 \| good	0.232 \| good
2025-12-07T22:00:00.000Z	52 \| moderate	9.752 \| good	43.444 \| good	26.616 \| good	4.951 \| good	17.438 \| good	0.315 \| good
2025-12-07T23:00:00.000Z	62 \| moderate	14.654 \| fine	65.778 \| fine	20.136 \| good	5.269 \| good	23.143 \| good	0.399 \| good
2025-12-08T00:00:00.000Z	64 \| moderate	16.099 \| fine	71.672 \| fine	16.496 \| good	5.587 \| good	28.848 \| good	0.483 \| good
2025-12-08T01:00:00.000Z	62 \| moderate	14.905 \| fine	66.308 \| fine	15.265 \| good	5.45 \| good	28.835 \| good	0.47 \| good
2025-12-08T02:00:00.000Z	62 \| moderate	14.838 \| fine	66.17 \| fine	15.233 \| good	5.314 \| good	28.822 \| good	0.456 \| good
2025-12-08T03:00:00.000Z	60 \| moderate	14.301 \| fine	63.958 \| fine	13.763 \| good	5.177 \| good	28.809 \| good	0.443 \| good
2025-12-08T04:00:00.000Z	56 \| moderate	12.35 \| fine	55.263 \| fine	17.366 \| good	4.591 \| good	24.71 \| good	0.392 \| good
2025-12-08T05:00:00.000Z	52 \| moderate	10.476 \| good	46.471 \| good	22.658 \| good	4.005 \| good	20.612 \| good	0.341 \| good
2025-12-08T06:00:00.000Z	52 \| moderate	9.88 \| good	43.672 \| good	24.736 \| good	3.418 \| good	16.513 \| good	0.291 \| good
2025-12-08T07:00:00.000Z	52 \| moderate	10.185 \| good	45.21 \| good	25.916 \| good	3.331 \| good	12.377 \| good	0.257 \| good
2025-12-08T08:00:00.000Z	27 \| good	4.567 \| good	19.83 \| good	28.748 \| good	3.243 \| good	8.241 \| good	0.223 \| good
2025-12-08T09:00:00.000Z	26 \| good	0.422 \| good	1.536 \| good	27.95 \| good	3.156 \| good	4.105 \| good	0.189 \| good
2025-12-08T10:00:00.000Z	24 \| good	0.664 \| good	2.638 \| good	26.299 \| good	2.29 \| good	3.74 \| good	0.176 \| good
2025-12-08T11:00:00.000Z	22 \| good	1.236 \| good	4.986 \| good	24.426 \| good	1.424 \| good	3.375 \| good	0.164 \| good
2025-12-08T12:00:00.000Z	21 \| good	1.938 \| good	8.02 \| good	23.485 \| good	0.559 \| good	3.01 \| good	0.151 \| good
2025-12-08T13:00:00.000Z	21 \| good	2.827 \| good	11.638 \| good	23.476 \| good	0.662 \| good	2.849 \| good	0.153 \| good
2025-12-08T14:00:00.000Z	22 \| good	1.946 \| good	8 \| good	24.08 \| good	0.766 \| good	2.688 \| good	0.155 \| good
2025-12-08T15:00:00.000Z	24 \| good	1.056 \| good	4.217 \| good	25.615 \| good	0.869 \| good	2.528 \| good	0.157 \| good
2025-12-08T16:00:00.000Z	24 \| good	0.665 \| good	2.328 \| good	26.205 \| good	0.944 \| good	2.327 \| good	0.155 \| good
2025-12-08T17:00:00.000Z	24 \| good	0.265 \| good	1 \| good	26.316 \| good	1.018 \| good	2.127 \| good	0.152 \| good
2025-12-08T18:00:00.000Z	25 \| good	0.434 \| good	1.607 \| good	26.648 \| good	1.092 \| good	1.927 \| good	0.15 \| good
2025-12-08T19:00:00.000Z	24 \| good	0.466 \| good	1.896 \| good	26.457 \| good	1.165 \| good	2.473 \| good	0.151 \| good
2025-12-08T20:00:00.000Z	24 \| good	0.747 \| good	2.896 \| good	26.381 \| good	1.238 \| good	3.018 \| good	0.152 \| good
2025-12-08T21:00:00.000Z	24 \| good	0.903 \| good	3.501 \| good	25.884 \| good	1.311 \| good	3.564 \| good	0.153 \| good
2025-12-08T22:00:00.000Z	21 \| good	0.676 \| good	2.396 \| good	22.888 \| good	1.458 \| good	7.822 \| good	0.183 \| good
2025-12-08T23:00:00.000Z	19 \| good	2.536 \| good	10.139 \| good	20.264 \| good	1.605 \| good	12.08 \| good	0.213 \| good
2025-12-09T00:00:00.000Z	16 \| good	2.592 \| good	10.422 \| good	17.176 \| good	1.752 \| good	16.338 \| good	0.242 \| good
2025-12-09T01:00:00.000Z	22 \| good	4.251 \| good	18.708 \| good	16.296 \| good	1.935 \| good	16.26 \| good	0.241 \| good
2025-12-09T02:00:00.000Z	33 \| good	6.222 \| good	27.392 \| good	13.123 \| good	2.119 \| good	16.182 \| good	0.24 \| good
2025-12-09T03:00:00.000Z	38 \| good	6.7 \| good	29.764 \| good	11.971 \| good	2.302 \| good	16.104 \| good	0.239 \| good
2025-12-09T04:00:00.000Z	38 \| good	7.332 \| good	32.31 \| good	11.461 \| good	2.494 \| good	15.287 \| good	0.234 \| good
2025-12-09T05:00:00.000Z	38 \| good	6.986 \| good	30.887 \| good	11.016 \| good	2.687 \| good	14.469 \| good	0.23 \| good
2025-12-09T06:00:00.000Z	56 \| moderate	11.528 \| good	12.821 \| good	17.774 \| good	2.887 \| good	13.69 \| good	0.226 \| good
2025-12-09T07:00:00.000Z	33 \| good	5.65 \| good	24.355 \| good	10.438 \| good	2.996 \| good	13.846 \| good	0.225 \| good
2025-12-09T08:00:00.000Z	27 \| good	4.854 \| good	21.266 \| good	9.24 \| good	3.114 \| good	14.041 \| good	0.224 \| good

Current air quality index in Gaithersburg, Maryland today

Common air pollutants in Gaithersburg, Maryland

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Gaithersburg, Maryland air quality forecast and history

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Gaithersburg, Maryland

Air quality in nearby cities

Flower Hill, Maryland

Montgomery Village, Maryland

Redland, Maryland

North Potomac, Maryland

Germantown, Maryland

Rockville, Maryland

How accurate is Maryland, USA air quality data?

Air quality levels in US

Frequently asked questions

How frequently does the air quality data for Gaithersburg, Maryland get updated?

What time in the past 24 hours saw the poorest air quality in Gaithersburg, Maryland?

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What is the air quality in Gaithersburg, Maryland right now?

What pollutant is most frequently found in Gaithersburg, Maryland?

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

What is the PM2.5 concentration in Gaithersburg, Maryland right now?

What is the current level of PM10 in Gaithersburg, Maryland?

What is the current level of carbon monoxide (CO) in Gaithersburg, Maryland?

What is the current level of sulfur dioxide (SO2) in Gaithersburg, Maryland?

What is the current level of ozone (O3) in Gaithersburg, Maryland?

What is the current level of nitrogen dioxide (NO2) in Gaithersburg, Maryland?

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 Gaithersburg, Maryland right now?

What is the current level of PM₁₀ in Gaithersburg, Maryland?

What is the current level of sulfur dioxide (SO₂) in Gaithersburg, Maryland?

What is the current level of ozone (O₃) in Gaithersburg, Maryland?

What is the current level of nitrogen dioxide (NO₂) in Gaithersburg, Maryland?