What is the sulfur dioxide (SO2) level in Westminster, Maryland at the moment?

Currently, Westminster, Maryland has a sulfur dioxide (SO2) concentration of 0.48 ppb.

What is the ozone (O3) level in Westminster, Maryland at the moment?

The current ozone (O3) level in Westminster, Maryland at the moment is 16.824 ppm.

What is the nitrogen dioxide (NO2) level in Westminster, Maryland at the moment?

Nitrogen dioxide (NO2) level in Westminster, Maryland at the moment is 10.934 ppb.

Live air quality index in Westminster, Maryland today

Q: What is the PM2.5 level in Westminster, Maryland at the moment?

PM2.5 levels in Westminster, Maryland are currently 79.948 μg/m3.

Q: What is the PM10 level in Westminster, Maryland at the moment?

The PM10 concentration in Westminster, Maryland is 263.296 μg/m3 at the moment.

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

168

Unhealthy

Westminster, Maryland

Last updated: ... (Local time)

Major air pollutants in Westminster, Maryland

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

79.95 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

263.30 μg/m³

155

255

425

605+

Ozone (O₃)

16.82 ppb

201

201+

Sulfur Dioxide (SO₂)

0.48 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

10.93 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.81 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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Westminster, Maryland

Scroll To Air Quality Map

Track live Westminster, Maryland air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-16T09:00:00.000Z	74 \| moderate	16.265 \| fine	100.903 \| fine	32.725 \| good	0.573 \| good	7.426 \| good	0.252 \| good
2026-07-16T10:00:00.000Z	59 \| moderate	12.84 \| fine	72.048 \| fine	26.095 \| good	0.545 \| good	7.515 \| good	0.279 \| good
2026-07-16T11:00:00.000Z	71 \| moderate	19.714 \| fine	85.486 \| fine	25.612 \| good	0.505 \| good	8.204 \| good	0.252 \| good
2026-07-16T12:00:00.000Z	71 \| moderate	20.282 \| fine	66.467 \| fine	31.512 \| good	0.491 \| good	7.696 \| good	0.33 \| good
2026-07-16T13:00:00.000Z	84 \| moderate	27.24 \| fine	79.562 \| fine	21.409 \| good	0.51 \| good	8.832 \| good	0.381 \| good
2026-07-16T14:00:00.000Z	66 \| moderate	17.416 \| fine	79.714 \| fine	31.833 \| good	0.53 \| good	6.365 \| good	0.312 \| good
2026-07-16T15:00:00.000Z	58 \| moderate	12.814 \| fine	51.737 \| good	31.599 \| good	0.649 \| good	5.914 \| good	0.269 \| good
2026-07-16T16:00:00.000Z	75 \| moderate	22.291 \| fine	98.74 \| fine	41.966 \| good	0.775 \| good	6.063 \| good	0.252 \| good
2026-07-16T17:00:00.000Z	58 \| moderate	13.417 \| fine	59.252 \| fine	44.62 \| good	0.683 \| good	4.922 \| good	0.269 \| good
2026-07-16T18:00:00.000Z	67 \| moderate	17.887 \| fine	81.625 \| fine	51.046 \| good	0.641 \| good	5.581 \| good	0.252 \| good
2026-07-16T19:00:00.000Z	75 \| moderate	22.314 \| fine	75.815 \| fine	49.636 \| good	0.524 \| good	4.821 \| good	0.252 \| good
2026-07-16T20:00:00.000Z	77 \| moderate	21.77 \| fine	80.995 \| fine	63.418 \| fine	0.576 \| good	4.538 \| good	0.252 \| good
2026-07-16T21:00:00.000Z	92 \| moderate	29.684 \| fine	137.646 \| fine	61.971 \| fine	0.545 \| good	5.123 \| good	0.23 \| good
2026-07-16T22:00:00.000Z	115 \| sensitive	41.219 \| moderate	103.499 \| fine	63.197 \| fine	0.468 \| good	4.987 \| good	0.252 \| good
2026-07-16T23:00:00.000Z	115 \| sensitive	41.079 \| moderate	159.668 \| moderate	62.49 \| fine	0.437 \| good	4.815 \| good	0.252 \| good
2026-07-17T00:00:00.000Z	84 \| moderate	26.501 \| fine	107.542 \| fine	54.424 \| good	0.442 \| good	4.216 \| good	0.252 \| good
2026-07-17T01:00:00.000Z	86 \| moderate	27.52 \| fine	88.3 \| fine	49.922 \| good	0.498 \| good	7.385 \| good	0.279 \| good
2026-07-17T02:00:00.000Z	247 \| vUnhealthy	171.954 \| poor	218.558 \| moderate	51.536 \| good	0.557 \| good	14.275 \| good	0.279 \| good
2026-07-17T03:00:00.000Z	271 \| vUnhealthy	196.081 \| poor	385.95 \| poor	51.957 \| good	0.549 \| good	12.87 \| good	0.344 \| good
2026-07-17T04:00:00.000Z	245 \| vUnhealthy	170.156 \| poor	366.042 \| poor	49.021 \| good	0.491 \| good	5.673 \| good	0.481 \| good
2026-07-17T05:00:00.000Z	289 \| vUnhealthy	213.66 \| poor	396.247 \| poor	49.276 \| good	0.549 \| good	8.444 \| good	0.766 \| good
2026-07-17T06:00:00.000Z	297 \| vUnhealthy	221.881 \| poor	405.641 \| poor	48.68 \| good	0.677 \| good	9.961 \| good	1.128 \| good
2026-07-17T07:00:00.000Z	222 \| vUnhealthy	147.423 \| poor	225.112 \| moderate	48.789 \| good	0.7 \| good	11.069 \| good	1.195 \| good
2026-07-17T08:00:00.000Z	142 \| sensitive	51.55 \| moderate	149.134 \| fine	35.343 \| good	0.715 \| good	12.393 \| good	1.297 \| good
2026-07-17T09:00:00.000Z	277 \| vUnhealthy	201.767 \| poor	385.51 \| poor	46.076 \| good	0.727 \| good	12.535 \| good	1.352 \| good
2026-07-17T10:00:00.000Z	236 \| vUnhealthy	160.796 \| poor	358.652 \| poor	30.789 \| good	0.665 \| good	13.737 \| good	1.371 \| good
2026-07-17T11:00:00.000Z	274 \| vUnhealthy	198.797 \| poor	386.852 \| poor	31.216 \| good	0.669 \| good	16.291 \| good	1.412 \| good
2026-07-17T12:00:00.000Z	230 \| vUnhealthy	154.681 \| poor	337.874 \| poor	23.717 \| good	0.583 \| good	14.972 \| good	1.395 \| good
2026-07-17T13:00:00.000Z	220 \| vUnhealthy	144.89 \| poor	354.426 \| poor	24.792 \| good	0.603 \| good	16.848 \| good	1.395 \| good
2026-07-17T14:00:00.000Z	205 \| vUnhealthy	129.904 \| poor	336.192 \| poor	30.818 \| good	0.7 \| good	15.402 \| good	1.25 \| good
2026-07-17T15:00:00.000Z	197 \| unhealthy	121.496 \| poor	320.353 \| poor	33.741 \| good	0.722 \| good	11.993 \| good	0.998 \| good
2026-07-17T16:00:00.000Z	203 \| vUnhealthy	127.983 \| poor	328.429 \| poor	38.123 \| good	0.726 \| good	8.614 \| good	0.797 \| good
2026-07-17T17:00:00.000Z	197 \| unhealthy	121.02 \| poor	299.709 \| poor	41.71 \| good	0.746 \| good	7.382 \| good	0.771 \| good
2026-07-17T18:00:00.000Z	192 \| unhealthy	113.602 \| poor	293.336 \| poor	48.413 \| good	0.695 \| good	6.04 \| good	0.772 \| good
2026-07-17T19:00:00.000Z	167 \| unhealthy	78.406 \| poor	280.354 \| poor	52.989 \| good	0.69 \| good	5.084 \| good	0.783 \| good
2026-07-17T20:00:00.000Z	192 \| unhealthy	114.482 \| poor	300.321 \| poor	53.039 \| good	0.694 \| good	5.194 \| good	0.802 \| good
2026-07-17T21:00:00.000Z	182 \| unhealthy	100.12 \| poor	290.935 \| poor	63.25 \| fine	0.671 \| good	5.755 \| good	0.834 \| good
2026-07-17T22:00:00.000Z	181 \| unhealthy	98.937 \| poor	292.104 \| poor	59.344 \| fine	0.82 \| good	6.38 \| good	0.853 \| good
2026-07-17T23:00:00.000Z	191 \| unhealthy	112.728 \| poor	274.366 \| poor	57.843 \| fine	0.989 \| good	8.345 \| good	0.796 \| good
2026-07-18T00:00:00.000Z	198 \| unhealthy	122.298 \| poor	324.215 \| poor	48.382 \| good	0.832 \| good	5.261 \| good	0.785 \| good
2026-07-18T01:00:00.000Z	186 \| unhealthy	106.165 \| poor	309.682 \| poor	53.727 \| good	0.685 \| good	9.268 \| good	0.75 \| good
2026-07-18T02:00:00.000Z	184 \| unhealthy	103.22 \| poor	298.298 \| poor	53.074 \| good	0.617 \| good	11.927 \| good	0.75 \| good
2026-07-18T03:00:00.000Z	201 \| vUnhealthy	125.838 \| poor	325.957 \| poor	30.579 \| good	0.581 \| good	14.668 \| good	0.757 \| good
2026-07-18T04:00:00.000Z	202 \| vUnhealthy	127.477 \| poor	328.324 \| poor	27.43 \| good	0.53 \| good	12.765 \| good	0.766 \| good
2026-07-18T05:00:00.000Z	207 \| vUnhealthy	132.444 \| poor	333.002 \| poor	15.258 \| good	0.538 \| good	10.078 \| good	0.775 \| good
2026-07-18T06:00:00.000Z	198 \| unhealthy	122.8 \| poor	326.493 \| poor	18.192 \| good	0.48 \| good	12.921 \| good	0.828 \| good
2026-07-18T07:00:00.000Z	168 \| unhealthy	79.948 \| poor	263.296 \| poor	16.824 \| good	0.48 \| good	10.934 \| good	0.811 \| good
2026-07-18T08:00:00.000Z	167 \| unhealthy	79.127 \| poor	226.222 \| moderate	32.127 \| good	0.525 \| good	11.145 \| good	0.768 \| good
2026-07-18T08:00:00.000Z	168 \| unhealthy	79.948 \| poor	263.296 \| poor	16.824 \| good	0.48 \| good	10.934 \| good	0.811 \| good
2026-07-18T09:00:00.000Z	160 \| unhealthy	68.882 \| poor	268.976 \| poor	42.931 \| good	0.911 \| good	6.677 \| good	0.372 \| good
2026-07-18T10:00:00.000Z	158 \| unhealthy	65.635 \| poor	265.294 \| poor	40.672 \| good	0.91 \| good	5.993 \| good	0.359 \| good
2026-07-18T11:00:00.000Z	147 \| sensitive	53.959 \| moderate	246.422 \| moderate	38.655 \| good	0.918 \| good	5.439 \| good	0.348 \| good
2026-07-18T12:00:00.000Z	156 \| unhealthy	61.746 \| poor	260.91 \| poor	41.216 \| good	0.934 \| good	5.308 \| good	0.346 \| good
2026-07-18T13:00:00.000Z	152 \| unhealthy	57.252 \| poor	256.662 \| poor	41.188 \| good	0.988 \| good	4.428 \| good	0.342 \| good
2026-07-18T14:00:00.000Z	92 \| moderate	31.151 \| fine	135.169 \| fine	35.724 \| good	0.978 \| good	2.936 \| good	0.334 \| good
2026-07-18T15:00:00.000Z	58 \| moderate	13.402 \| fine	59.998 \| fine	34.728 \| good	0.901 \| good	1.864 \| good	0.313 \| good
2026-07-18T16:00:00.000Z	56 \| moderate	12.206 \| fine	54.253 \| good	35.952 \| good	0.846 \| good	1.192 \| good	0.276 \| good
2026-07-18T17:00:00.000Z	64 \| moderate	16.119 \| fine	72.122 \| fine	38.837 \| good	0.797 \| good	0.851 \| good	0.25 \| good
2026-07-18T18:00:00.000Z	67 \| moderate	17.648 \| fine	78.539 \| fine	40.835 \| good	0.747 \| good	0.714 \| good	0.233 \| good
2026-07-18T19:00:00.000Z	75 \| moderate	21.571 \| fine	94.201 \| fine	43.28 \| good	0.709 \| good	0.693 \| good	0.221 \| good
2026-07-18T20:00:00.000Z	81 \| moderate	25.289 \| fine	110.72 \| fine	44.536 \| good	0.677 \| good	0.692 \| good	0.215 \| good
2026-07-18T21:00:00.000Z	67 \| moderate	17.503 \| fine	76.996 \| fine	39.651 \| good	0.619 \| good	0.771 \| good	0.211 \| good
2026-07-18T22:00:00.000Z	60 \| moderate	14.125 \| fine	63.14 \| fine	38.394 \| good	0.533 \| good	1.232 \| good	0.206 \| good
2026-07-18T23:00:00.000Z	64 \| moderate	16.479 \| fine	72.903 \| fine	37.317 \| good	0.424 \| good	2.717 \| good	0.211 \| good
2026-07-19T00:00:00.000Z	69 \| moderate	19.459 \| fine	86.035 \| fine	36.923 \| good	0.303 \| good	3.218 \| good	0.2 \| good
2026-07-19T01:00:00.000Z	79 \| moderate	24.209 \| fine	105.742 \| fine	28.196 \| good	0.245 \| good	3.35 \| good	0.186 \| good
2026-07-19T02:00:00.000Z	81 \| moderate	24.649 \| fine	107.593 \| fine	24.689 \| good	0.232 \| good	3.655 \| good	0.181 \| good
2026-07-19T03:00:00.000Z	62 \| moderate	15.073 \| fine	68.091 \| fine	28.42 \| good	0.258 \| good	3.488 \| good	0.178 \| good
2026-07-19T04:00:00.000Z	38 \| good	7.161 \| good	31.98 \| good	32.439 \| good	0.301 \| good	3.394 \| good	0.179 \| good
2026-07-19T05:00:00.000Z	38 \| good	6.944 \| good	30.426 \| good	37.562 \| good	0.34 \| good	3.055 \| good	0.18 \| good
2026-07-19T06:00:00.000Z	37 \| good	6.491 \| good	29.178 \| good	40.193 \| good	0.373 \| good	2.808 \| good	0.18 \| good
2026-07-19T07:00:00.000Z	38 \| good	6.438 \| good	28.464 \| good	40.829 \| good	0.386 \| good	2.695 \| good	0.179 \| good
2026-07-19T08:00:00.000Z	40 \| good	5.952 \| good	26.726 \| good	43.031 \| good	0.372 \| good	2.377 \| good	0.172 \| good
2026-07-19T09:00:00.000Z	38 \| good	6.649 \| good	29.918 \| good	41.039 \| good	0.376 \| good	2.436 \| good	0.171 \| good
2026-07-19T10:00:00.000Z	38 \| good	6.584 \| good	29.316 \| good	38.917 \| good	0.398 \| good	2.586 \| good	0.174 \| good
2026-07-19T11:00:00.000Z	71 \| moderate	19.873 \| fine	87.396 \| fine	40.192 \| good	0.394 \| good	2.229 \| good	0.187 \| good
2026-07-19T12:00:00.000Z	137 \| sensitive	49.786 \| moderate	224.599 \| moderate	45.523 \| good	0.423 \| good	1.624 \| good	0.234 \| good
2026-07-19T13:00:00.000Z	145 \| sensitive	53.381 \| moderate	243.101 \| moderate	46.682 \| good	0.469 \| good	1.191 \| good	0.29 \| good
2026-07-19T14:00:00.000Z	133 \| sensitive	48.466 \| moderate	219.043 \| moderate	42.808 \| good	0.463 \| good	0.946 \| good	0.328 \| good
2026-07-19T15:00:00.000Z	112 \| sensitive	40.136 \| moderate	177.927 \| moderate	46.034 \| good	0.429 \| good	0.753 \| good	0.335 \| good
2026-07-19T16:00:00.000Z	112 \| sensitive	39.962 \| moderate	176.779 \| moderate	48.625 \| good	0.39 \| good	0.592 \| good	0.325 \| good
2026-07-19T17:00:00.000Z	112 \| sensitive	39.637 \| moderate	175.105 \| moderate	51.086 \| good	0.356 \| good	0.508 \| good	0.31 \| good
2026-07-19T18:00:00.000Z	84 \| moderate	27.376 \| fine	118.638 \| fine	44.386 \| good	0.321 \| good	0.473 \| good	0.293 \| good
2026-07-19T19:00:00.000Z	62 \| moderate	14.578 \| fine	65.231 \| fine	38.555 \| good	0.288 \| good	0.473 \| good	0.278 \| good
2026-07-19T20:00:00.000Z	56 \| moderate	12.083 \| good	54.263 \| good	38.903 \| good	0.259 \| good	0.481 \| good	0.263 \| good
2026-07-19T21:00:00.000Z	58 \| moderate	13.195 \| fine	59.47 \| fine	40.446 \| good	0.235 \| good	0.542 \| good	0.253 \| good
2026-07-19T22:00:00.000Z	62 \| moderate	14.746 \| fine	65.692 \| fine	39.834 \| good	0.219 \| good	0.682 \| good	0.245 \| good
2026-07-19T23:00:00.000Z	62 \| moderate	15.105 \| fine	67.261 \| fine	38.84 \| good	0.21 \| good	1.584 \| good	0.249 \| good
2026-07-20T00:00:00.000Z	54 \| moderate	11.294 \| good	49.916 \| good	35.911 \| good	0.22 \| good	3.601 \| good	0.261 \| good
2026-07-20T01:00:00.000Z	44 \| good	7.843 \| good	34.245 \| good	32.214 \| good	0.261 \| good	6.921 \| good	0.282 \| good
2026-07-20T02:00:00.000Z	38 \| good	6.701 \| good	30.139 \| good	26.421 \| good	0.3 \| good	8.923 \| good	0.294 \| good
2026-07-20T03:00:00.000Z	38 \| good	7.147 \| good	31.403 \| good	25.571 \| good	0.345 \| good	10.972 \| good	0.306 \| good
2026-07-20T04:00:00.000Z	38 \| good	6.938 \| good	30.542 \| good	24.189 \| good	0.392 \| good	13.332 \| good	0.321 \| good
2026-07-20T05:00:00.000Z	38 \| good	7.318 \| good	32.507 \| good	21.75 \| good	0.41 \| good	14.867 \| good	0.332 \| good
2026-07-20T06:00:00.000Z	60 \| moderate	13.567 \| fine	13.609 \| good	12.982 \| good	0.383 \| good	14.234 \| good	0.33 \| good
2026-07-20T07:00:00.000Z	38 \| good	7.32 \| good	32.523 \| good	22.183 \| good	0.404 \| good	11.618 \| good	0.307 \| good
2026-07-20T08:00:00.000Z	38 \| good	6.995 \| good	30.653 \| good	21.213 \| good	0.447 \| good	9.548 \| good	0.285 \| good

Westminster

Get reliable air quality data to drive your business

Westminster, Maryland air quality map: Stay updated on AQI near you

0.82ppm

How accurate is Maryland, USA air quality data?

Air quality and pollutant data for Maryland, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for Westminster, Maryland?

The air quality information for Westminster, Maryland is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Westminster, Maryland at its worst?

In the past 24 hours, the air quality in Westminster, Maryland was at its worst at 09:00:00 on 2026-07-17.

When did Westminster, Maryland experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Westminster, Maryland was observed at 08:00:00 on 2026-07-17.

What is the AQI in Westminster, Maryland right now?

As of now, the AQI in Westminster, Maryland is 168, indicating Unhealthy conditions.

What is the most common type of pollution in Westminster, Maryland?

Westminster, Maryland air has the highest levels of PM2.5.

What should I do in case of poor air quality in Westminster, Maryland?

Poor air quality in Westminster, Maryland means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in Westminster, Maryland at the moment?

PM_2.5 levels in Westminster, Maryland are currently 79.948 μg/m³.

What is the PM₁₀ level in Westminster, Maryland at the moment?

The PM₁₀ concentration in Westminster, Maryland is 263.296 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Westminster, Maryland at the moment?

The current carbon monoxide (CO) concentration in Westminster, Maryland is 0.811 ppm.

What is the sulfur dioxide (SO₂) level in Westminster, Maryland at the moment?

Currently, Westminster, Maryland has a sulfur dioxide (SO₂) concentration of 0.48 ppb.

What is the ozone (O₃) level in Westminster, Maryland at the moment?

The current ozone (O₃) level in Westminster, Maryland at the moment is 16.824 ppm.

What is the nitrogen dioxide (NO₂) level in Westminster, Maryland at the moment?

Nitrogen dioxide (NO₂) level in Westminster, Maryland at the moment is 10.934 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-16T09:00:00.000Z	74 \| moderate	16.265 \| fine	100.903 \| fine	32.725 \| good	0.573 \| good	7.426 \| good	0.252 \| good
2026-07-16T10:00:00.000Z	59 \| moderate	12.84 \| fine	72.048 \| fine	26.095 \| good	0.545 \| good	7.515 \| good	0.279 \| good
2026-07-16T11:00:00.000Z	71 \| moderate	19.714 \| fine	85.486 \| fine	25.612 \| good	0.505 \| good	8.204 \| good	0.252 \| good
2026-07-16T12:00:00.000Z	71 \| moderate	20.282 \| fine	66.467 \| fine	31.512 \| good	0.491 \| good	7.696 \| good	0.33 \| good
2026-07-16T13:00:00.000Z	84 \| moderate	27.24 \| fine	79.562 \| fine	21.409 \| good	0.51 \| good	8.832 \| good	0.381 \| good
2026-07-16T14:00:00.000Z	66 \| moderate	17.416 \| fine	79.714 \| fine	31.833 \| good	0.53 \| good	6.365 \| good	0.312 \| good
2026-07-16T15:00:00.000Z	58 \| moderate	12.814 \| fine	51.737 \| good	31.599 \| good	0.649 \| good	5.914 \| good	0.269 \| good
2026-07-16T16:00:00.000Z	75 \| moderate	22.291 \| fine	98.74 \| fine	41.966 \| good	0.775 \| good	6.063 \| good	0.252 \| good
2026-07-16T17:00:00.000Z	58 \| moderate	13.417 \| fine	59.252 \| fine	44.62 \| good	0.683 \| good	4.922 \| good	0.269 \| good
2026-07-16T18:00:00.000Z	67 \| moderate	17.887 \| fine	81.625 \| fine	51.046 \| good	0.641 \| good	5.581 \| good	0.252 \| good
2026-07-16T19:00:00.000Z	75 \| moderate	22.314 \| fine	75.815 \| fine	49.636 \| good	0.524 \| good	4.821 \| good	0.252 \| good
2026-07-16T20:00:00.000Z	77 \| moderate	21.77 \| fine	80.995 \| fine	63.418 \| fine	0.576 \| good	4.538 \| good	0.252 \| good
2026-07-16T21:00:00.000Z	92 \| moderate	29.684 \| fine	137.646 \| fine	61.971 \| fine	0.545 \| good	5.123 \| good	0.23 \| good
2026-07-16T22:00:00.000Z	115 \| sensitive	41.219 \| moderate	103.499 \| fine	63.197 \| fine	0.468 \| good	4.987 \| good	0.252 \| good
2026-07-16T23:00:00.000Z	115 \| sensitive	41.079 \| moderate	159.668 \| moderate	62.49 \| fine	0.437 \| good	4.815 \| good	0.252 \| good
2026-07-17T00:00:00.000Z	84 \| moderate	26.501 \| fine	107.542 \| fine	54.424 \| good	0.442 \| good	4.216 \| good	0.252 \| good
2026-07-17T01:00:00.000Z	86 \| moderate	27.52 \| fine	88.3 \| fine	49.922 \| good	0.498 \| good	7.385 \| good	0.279 \| good
2026-07-17T02:00:00.000Z	247 \| vUnhealthy	171.954 \| poor	218.558 \| moderate	51.536 \| good	0.557 \| good	14.275 \| good	0.279 \| good
2026-07-17T03:00:00.000Z	271 \| vUnhealthy	196.081 \| poor	385.95 \| poor	51.957 \| good	0.549 \| good	12.87 \| good	0.344 \| good
2026-07-17T04:00:00.000Z	245 \| vUnhealthy	170.156 \| poor	366.042 \| poor	49.021 \| good	0.491 \| good	5.673 \| good	0.481 \| good
2026-07-17T05:00:00.000Z	289 \| vUnhealthy	213.66 \| poor	396.247 \| poor	49.276 \| good	0.549 \| good	8.444 \| good	0.766 \| good
2026-07-17T06:00:00.000Z	297 \| vUnhealthy	221.881 \| poor	405.641 \| poor	48.68 \| good	0.677 \| good	9.961 \| good	1.128 \| good
2026-07-17T07:00:00.000Z	222 \| vUnhealthy	147.423 \| poor	225.112 \| moderate	48.789 \| good	0.7 \| good	11.069 \| good	1.195 \| good
2026-07-17T08:00:00.000Z	142 \| sensitive	51.55 \| moderate	149.134 \| fine	35.343 \| good	0.715 \| good	12.393 \| good	1.297 \| good
2026-07-17T09:00:00.000Z	277 \| vUnhealthy	201.767 \| poor	385.51 \| poor	46.076 \| good	0.727 \| good	12.535 \| good	1.352 \| good
2026-07-17T10:00:00.000Z	236 \| vUnhealthy	160.796 \| poor	358.652 \| poor	30.789 \| good	0.665 \| good	13.737 \| good	1.371 \| good
2026-07-17T11:00:00.000Z	274 \| vUnhealthy	198.797 \| poor	386.852 \| poor	31.216 \| good	0.669 \| good	16.291 \| good	1.412 \| good
2026-07-17T12:00:00.000Z	230 \| vUnhealthy	154.681 \| poor	337.874 \| poor	23.717 \| good	0.583 \| good	14.972 \| good	1.395 \| good
2026-07-17T13:00:00.000Z	220 \| vUnhealthy	144.89 \| poor	354.426 \| poor	24.792 \| good	0.603 \| good	16.848 \| good	1.395 \| good
2026-07-17T14:00:00.000Z	205 \| vUnhealthy	129.904 \| poor	336.192 \| poor	30.818 \| good	0.7 \| good	15.402 \| good	1.25 \| good
2026-07-17T15:00:00.000Z	197 \| unhealthy	121.496 \| poor	320.353 \| poor	33.741 \| good	0.722 \| good	11.993 \| good	0.998 \| good
2026-07-17T16:00:00.000Z	203 \| vUnhealthy	127.983 \| poor	328.429 \| poor	38.123 \| good	0.726 \| good	8.614 \| good	0.797 \| good
2026-07-17T17:00:00.000Z	197 \| unhealthy	121.02 \| poor	299.709 \| poor	41.71 \| good	0.746 \| good	7.382 \| good	0.771 \| good
2026-07-17T18:00:00.000Z	192 \| unhealthy	113.602 \| poor	293.336 \| poor	48.413 \| good	0.695 \| good	6.04 \| good	0.772 \| good
2026-07-17T19:00:00.000Z	167 \| unhealthy	78.406 \| poor	280.354 \| poor	52.989 \| good	0.69 \| good	5.084 \| good	0.783 \| good
2026-07-17T20:00:00.000Z	192 \| unhealthy	114.482 \| poor	300.321 \| poor	53.039 \| good	0.694 \| good	5.194 \| good	0.802 \| good
2026-07-17T21:00:00.000Z	182 \| unhealthy	100.12 \| poor	290.935 \| poor	63.25 \| fine	0.671 \| good	5.755 \| good	0.834 \| good
2026-07-17T22:00:00.000Z	181 \| unhealthy	98.937 \| poor	292.104 \| poor	59.344 \| fine	0.82 \| good	6.38 \| good	0.853 \| good
2026-07-17T23:00:00.000Z	191 \| unhealthy	112.728 \| poor	274.366 \| poor	57.843 \| fine	0.989 \| good	8.345 \| good	0.796 \| good
2026-07-18T00:00:00.000Z	198 \| unhealthy	122.298 \| poor	324.215 \| poor	48.382 \| good	0.832 \| good	5.261 \| good	0.785 \| good
2026-07-18T01:00:00.000Z	186 \| unhealthy	106.165 \| poor	309.682 \| poor	53.727 \| good	0.685 \| good	9.268 \| good	0.75 \| good
2026-07-18T02:00:00.000Z	184 \| unhealthy	103.22 \| poor	298.298 \| poor	53.074 \| good	0.617 \| good	11.927 \| good	0.75 \| good
2026-07-18T03:00:00.000Z	201 \| vUnhealthy	125.838 \| poor	325.957 \| poor	30.579 \| good	0.581 \| good	14.668 \| good	0.757 \| good
2026-07-18T04:00:00.000Z	202 \| vUnhealthy	127.477 \| poor	328.324 \| poor	27.43 \| good	0.53 \| good	12.765 \| good	0.766 \| good
2026-07-18T05:00:00.000Z	207 \| vUnhealthy	132.444 \| poor	333.002 \| poor	15.258 \| good	0.538 \| good	10.078 \| good	0.775 \| good
2026-07-18T06:00:00.000Z	198 \| unhealthy	122.8 \| poor	326.493 \| poor	18.192 \| good	0.48 \| good	12.921 \| good	0.828 \| good
2026-07-18T07:00:00.000Z	168 \| unhealthy	79.948 \| poor	263.296 \| poor	16.824 \| good	0.48 \| good	10.934 \| good	0.811 \| good
2026-07-18T08:00:00.000Z	167 \| unhealthy	79.127 \| poor	226.222 \| moderate	32.127 \| good	0.525 \| good	11.145 \| good	0.768 \| good
2026-07-18T08:00:00.000Z	168 \| unhealthy	79.948 \| poor	263.296 \| poor	16.824 \| good	0.48 \| good	10.934 \| good	0.811 \| good
2026-07-18T09:00:00.000Z	160 \| unhealthy	68.882 \| poor	268.976 \| poor	42.931 \| good	0.911 \| good	6.677 \| good	0.372 \| good
2026-07-18T10:00:00.000Z	158 \| unhealthy	65.635 \| poor	265.294 \| poor	40.672 \| good	0.91 \| good	5.993 \| good	0.359 \| good
2026-07-18T11:00:00.000Z	147 \| sensitive	53.959 \| moderate	246.422 \| moderate	38.655 \| good	0.918 \| good	5.439 \| good	0.348 \| good
2026-07-18T12:00:00.000Z	156 \| unhealthy	61.746 \| poor	260.91 \| poor	41.216 \| good	0.934 \| good	5.308 \| good	0.346 \| good
2026-07-18T13:00:00.000Z	152 \| unhealthy	57.252 \| poor	256.662 \| poor	41.188 \| good	0.988 \| good	4.428 \| good	0.342 \| good
2026-07-18T14:00:00.000Z	92 \| moderate	31.151 \| fine	135.169 \| fine	35.724 \| good	0.978 \| good	2.936 \| good	0.334 \| good
2026-07-18T15:00:00.000Z	58 \| moderate	13.402 \| fine	59.998 \| fine	34.728 \| good	0.901 \| good	1.864 \| good	0.313 \| good
2026-07-18T16:00:00.000Z	56 \| moderate	12.206 \| fine	54.253 \| good	35.952 \| good	0.846 \| good	1.192 \| good	0.276 \| good
2026-07-18T17:00:00.000Z	64 \| moderate	16.119 \| fine	72.122 \| fine	38.837 \| good	0.797 \| good	0.851 \| good	0.25 \| good
2026-07-18T18:00:00.000Z	67 \| moderate	17.648 \| fine	78.539 \| fine	40.835 \| good	0.747 \| good	0.714 \| good	0.233 \| good
2026-07-18T19:00:00.000Z	75 \| moderate	21.571 \| fine	94.201 \| fine	43.28 \| good	0.709 \| good	0.693 \| good	0.221 \| good
2026-07-18T20:00:00.000Z	81 \| moderate	25.289 \| fine	110.72 \| fine	44.536 \| good	0.677 \| good	0.692 \| good	0.215 \| good
2026-07-18T21:00:00.000Z	67 \| moderate	17.503 \| fine	76.996 \| fine	39.651 \| good	0.619 \| good	0.771 \| good	0.211 \| good
2026-07-18T22:00:00.000Z	60 \| moderate	14.125 \| fine	63.14 \| fine	38.394 \| good	0.533 \| good	1.232 \| good	0.206 \| good
2026-07-18T23:00:00.000Z	64 \| moderate	16.479 \| fine	72.903 \| fine	37.317 \| good	0.424 \| good	2.717 \| good	0.211 \| good
2026-07-19T00:00:00.000Z	69 \| moderate	19.459 \| fine	86.035 \| fine	36.923 \| good	0.303 \| good	3.218 \| good	0.2 \| good
2026-07-19T01:00:00.000Z	79 \| moderate	24.209 \| fine	105.742 \| fine	28.196 \| good	0.245 \| good	3.35 \| good	0.186 \| good
2026-07-19T02:00:00.000Z	81 \| moderate	24.649 \| fine	107.593 \| fine	24.689 \| good	0.232 \| good	3.655 \| good	0.181 \| good
2026-07-19T03:00:00.000Z	62 \| moderate	15.073 \| fine	68.091 \| fine	28.42 \| good	0.258 \| good	3.488 \| good	0.178 \| good
2026-07-19T04:00:00.000Z	38 \| good	7.161 \| good	31.98 \| good	32.439 \| good	0.301 \| good	3.394 \| good	0.179 \| good
2026-07-19T05:00:00.000Z	38 \| good	6.944 \| good	30.426 \| good	37.562 \| good	0.34 \| good	3.055 \| good	0.18 \| good
2026-07-19T06:00:00.000Z	37 \| good	6.491 \| good	29.178 \| good	40.193 \| good	0.373 \| good	2.808 \| good	0.18 \| good
2026-07-19T07:00:00.000Z	38 \| good	6.438 \| good	28.464 \| good	40.829 \| good	0.386 \| good	2.695 \| good	0.179 \| good
2026-07-19T08:00:00.000Z	40 \| good	5.952 \| good	26.726 \| good	43.031 \| good	0.372 \| good	2.377 \| good	0.172 \| good
2026-07-19T09:00:00.000Z	38 \| good	6.649 \| good	29.918 \| good	41.039 \| good	0.376 \| good	2.436 \| good	0.171 \| good
2026-07-19T10:00:00.000Z	38 \| good	6.584 \| good	29.316 \| good	38.917 \| good	0.398 \| good	2.586 \| good	0.174 \| good
2026-07-19T11:00:00.000Z	71 \| moderate	19.873 \| fine	87.396 \| fine	40.192 \| good	0.394 \| good	2.229 \| good	0.187 \| good
2026-07-19T12:00:00.000Z	137 \| sensitive	49.786 \| moderate	224.599 \| moderate	45.523 \| good	0.423 \| good	1.624 \| good	0.234 \| good
2026-07-19T13:00:00.000Z	145 \| sensitive	53.381 \| moderate	243.101 \| moderate	46.682 \| good	0.469 \| good	1.191 \| good	0.29 \| good
2026-07-19T14:00:00.000Z	133 \| sensitive	48.466 \| moderate	219.043 \| moderate	42.808 \| good	0.463 \| good	0.946 \| good	0.328 \| good
2026-07-19T15:00:00.000Z	112 \| sensitive	40.136 \| moderate	177.927 \| moderate	46.034 \| good	0.429 \| good	0.753 \| good	0.335 \| good
2026-07-19T16:00:00.000Z	112 \| sensitive	39.962 \| moderate	176.779 \| moderate	48.625 \| good	0.39 \| good	0.592 \| good	0.325 \| good
2026-07-19T17:00:00.000Z	112 \| sensitive	39.637 \| moderate	175.105 \| moderate	51.086 \| good	0.356 \| good	0.508 \| good	0.31 \| good
2026-07-19T18:00:00.000Z	84 \| moderate	27.376 \| fine	118.638 \| fine	44.386 \| good	0.321 \| good	0.473 \| good	0.293 \| good
2026-07-19T19:00:00.000Z	62 \| moderate	14.578 \| fine	65.231 \| fine	38.555 \| good	0.288 \| good	0.473 \| good	0.278 \| good
2026-07-19T20:00:00.000Z	56 \| moderate	12.083 \| good	54.263 \| good	38.903 \| good	0.259 \| good	0.481 \| good	0.263 \| good
2026-07-19T21:00:00.000Z	58 \| moderate	13.195 \| fine	59.47 \| fine	40.446 \| good	0.235 \| good	0.542 \| good	0.253 \| good
2026-07-19T22:00:00.000Z	62 \| moderate	14.746 \| fine	65.692 \| fine	39.834 \| good	0.219 \| good	0.682 \| good	0.245 \| good
2026-07-19T23:00:00.000Z	62 \| moderate	15.105 \| fine	67.261 \| fine	38.84 \| good	0.21 \| good	1.584 \| good	0.249 \| good
2026-07-20T00:00:00.000Z	54 \| moderate	11.294 \| good	49.916 \| good	35.911 \| good	0.22 \| good	3.601 \| good	0.261 \| good
2026-07-20T01:00:00.000Z	44 \| good	7.843 \| good	34.245 \| good	32.214 \| good	0.261 \| good	6.921 \| good	0.282 \| good
2026-07-20T02:00:00.000Z	38 \| good	6.701 \| good	30.139 \| good	26.421 \| good	0.3 \| good	8.923 \| good	0.294 \| good
2026-07-20T03:00:00.000Z	38 \| good	7.147 \| good	31.403 \| good	25.571 \| good	0.345 \| good	10.972 \| good	0.306 \| good
2026-07-20T04:00:00.000Z	38 \| good	6.938 \| good	30.542 \| good	24.189 \| good	0.392 \| good	13.332 \| good	0.321 \| good
2026-07-20T05:00:00.000Z	38 \| good	7.318 \| good	32.507 \| good	21.75 \| good	0.41 \| good	14.867 \| good	0.332 \| good
2026-07-20T06:00:00.000Z	60 \| moderate	13.567 \| fine	13.609 \| good	12.982 \| good	0.383 \| good	14.234 \| good	0.33 \| good
2026-07-20T07:00:00.000Z	38 \| good	7.32 \| good	32.523 \| good	22.183 \| good	0.404 \| good	11.618 \| good	0.307 \| good
2026-07-20T08:00:00.000Z	38 \| good	6.995 \| good	30.653 \| good	21.213 \| good	0.447 \| good	9.548 \| good	0.285 \| good

Live air quality index in Westminster, Maryland today

Major air pollutants in Westminster, Maryland

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)