What are the current PM10 levels at Halfway, Maryland?

The current PM10 levels in Halfway, Maryland are 18.846 μg/m3.

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

The current sulfur dioxide (SO2) levels in Halfway, Maryland are 0.166 ppb.

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

The current ozone (O3) levels at Halfway, Maryland is 4.045 ppm.

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

The current nitrogen dioxide (NO2) levels at Halfway, Maryland is 3.335 ppb.

Real-time air quality index in Halfway, Maryland today

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

The measured PM2.5 levels in Halfway, Maryland at present are 4.331 μg/m3.

Stay updated with real-time air quality in Halfway, Maryland featuring accurate data on AQI, PM_2.5, PM₁₀, O₃, NO₂, SO₂, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.

Live AQI (Air Quality Index)

Good

Halfway, Maryland

Last updated: ... (Local time)

Common air pollutants in Halfway, Maryland

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

4.33 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

18.85 μg/m³

155

255

425

605+

Ozone (O₃)

4.04 ppb

201

201+

Sulfur Dioxide (SO₂)

0.17 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.33 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.26 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Halfway, Maryland

Get Live Pollen Counts

Halfway, Maryland

Scroll To Air Quality Map

Track live Halfway, Maryland air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-05T13:00:00.000Z	27 \| good	4.774 \| good	20.303 \| good	19.658 \| good	0.236 \| good	5.023 \| good	0.242 \| good
2026-09-05T14:00:00.000Z	22 \| good	4.326 \| good	18.682 \| good	22.517 \| good	0.24 \| good	2.841 \| good	0.242 \| good
2026-09-05T15:00:00.000Z	27 \| good	4.682 \| good	20.48 \| good	24.395 \| good	0.268 \| good	2.083 \| good	0.22 \| good
2026-09-05T16:00:00.000Z	29 \| good	3.958 \| good	16.801 \| good	30.725 \| good	0.295 \| good	2.433 \| good	0.22 \| good
2026-09-05T17:00:00.000Z	28 \| good	3.585 \| good	15.844 \| good	30.075 \| good	0.272 \| good	2.022 \| good	0.22 \| good
2026-09-05T18:00:00.000Z	33 \| good	5.657 \| good	23.949 \| good	33.846 \| good	0.189 \| good	1.652 \| good	0.201 \| good
2026-09-05T19:00:00.000Z	34 \| good	5.795 \| good	24.909 \| good	36.965 \| good	0.189 \| good	1.356 \| good	0.201 \| good
2026-09-05T20:00:00.000Z	35 \| good	3.65 \| good	15.931 \| good	37.967 \| good	0.23 \| good	1.773 \| good	0.2 \| good
2026-09-05T21:00:00.000Z	34 \| good	1.681 \| good	6.898 \| good	36.984 \| good	0.26 \| good	1.302 \| good	0.22 \| good
2026-09-05T22:00:00.000Z	36 \| good	2.882 \| good	11.857 \| good	38.668 \| good	0.267 \| good	2.63 \| good	0.24 \| good
2026-09-05T23:00:00.000Z	35 \| good	3.494 \| good	15.464 \| good	37.854 \| good	0.242 \| good	2.681 \| good	0.24 \| good
2026-09-06T00:00:00.000Z	31 \| good	3.303 \| good	14.419 \| good	34.118 \| good	0.31 \| good	2.84 \| good	0.22 \| good
2026-09-06T01:00:00.000Z	29 \| good	4.152 \| good	18.217 \| good	30.836 \| good	0.291 \| good	3.593 \| good	0.277 \| good
2026-09-06T02:00:00.000Z	33 \| good	5.548 \| good	23.76 \| good	26.764 \| good	0.223 \| good	4.568 \| good	0.318 \| good
2026-09-06T03:00:00.000Z	22 \| good	1.252 \| good	5.227 \| good	24.282 \| good	0.203 \| good	3.208 \| good	0.174 \| good
2026-09-06T04:00:00.000Z	23 \| good	4.358 \| good	18.703 \| good	25.295 \| good	0.255 \| good	5.696 \| good	0.319 \| good
2026-09-06T05:00:00.000Z	27 \| good	5.203 \| good	22.601 \| good	19.654 \| good	0.185 \| good	5.853 \| good	0.299 \| good
2026-09-06T06:00:00.000Z	38 \| good	6.584 \| good	29.044 \| good	15.71 \| good	0.164 \| good	5.015 \| good	0.298 \| good
2026-09-06T07:00:00.000Z	38 \| good	6.569 \| good	28.966 \| good	15.693 \| good	0.164 \| good	6.047 \| good	0.355 \| good
2026-09-06T08:00:00.000Z	38 \| good	7.265 \| good	31.549 \| good	10.118 \| good	0.192 \| good	5.143 \| good	0.317 \| good
2026-09-06T09:00:00.000Z	38 \| good	6.581 \| good	29.643 \| good	5.719 \| good	0.2 \| good	4.056 \| good	0.298 \| good
2026-09-06T10:00:00.000Z	33 \| good	5.835 \| good	25.04 \| good	5.675 \| good	0.342 \| good	4.064 \| good	0.279 \| good
2026-09-06T11:00:00.000Z	27 \| good	5.446 \| good	23.093 \| good	7.339 \| good	0.224 \| good	4.546 \| good	0.259 \| good
2026-09-06T12:00:00.000Z	27 \| good	4.812 \| good	21.278 \| good	12.828 \| good	0.24 \| good	4.214 \| good	0.298 \| good
2026-09-06T13:00:00.000Z	27 \| good	4.779 \| good	21.015 \| good	13.047 \| good	0.238 \| good	3.445 \| good	0.279 \| good
2026-09-06T14:00:00.000Z	22 \| good	4.16 \| good	18.227 \| good	17.051 \| good	0.269 \| good	2.356 \| good	0.24 \| good
2026-09-06T15:00:00.000Z	19 \| good	2.736 \| good	10.964 \| good	20.885 \| good	0.275 \| good	1.998 \| good	0.221 \| good
2026-09-06T16:00:00.000Z	23 \| good	2.57 \| good	10.486 \| good	24.747 \| good	0.235 \| good	1.359 \| good	0.22 \| good
2026-09-06T17:00:00.000Z	24 \| good	1.892 \| good	8.176 \| good	25.837 \| good	0.231 \| good	1.224 \| good	0.181 \| good
2026-09-06T18:00:00.000Z	38 \| good	6.546 \| good	29.721 \| good	27.928 \| good	0.21 \| good	0.733 \| good	0.201 \| good
2026-09-06T19:00:00.000Z	29 \| good	1.64 \| good	6.48 \| good	30.755 \| good	0.186 \| good	0.897 \| good	0.161 \| good
2026-09-06T20:00:00.000Z	29 \| good	1.945 \| good	7.868 \| good	30.881 \| good	0.231 \| good	0.729 \| good	0.18 \| good
2026-09-06T21:00:00.000Z	27 \| good	2.004 \| good	8.096 \| good	29.132 \| good	0.245 \| good	1.303 \| good	0.18 \| good
2026-09-06T22:00:00.000Z	25 \| good	1.094 \| good	4.233 \| good	27.078 \| good	0.202 \| good	1.181 \| good	0.18 \| good
2026-09-06T23:00:00.000Z	24 \| good	0.714 \| good	3.373 \| good	26.215 \| good	0.343 \| good	1.643 \| good	0.22 \| good
2026-09-07T00:00:00.000Z	26 \| good	2.343 \| good	9.538 \| good	27.768 \| good	0.271 \| good	1.939 \| good	0.259 \| good
2026-09-07T01:00:00.000Z	24 \| good	3.167 \| good	14.111 \| good	25.781 \| good	0.201 \| good	2.433 \| good	0.259 \| good
2026-09-07T02:00:00.000Z	27 \| good	5.332 \| good	23.215 \| good	21.769 \| good	0.226 \| good	3.352 \| good	0.298 \| good
2026-09-07T03:00:00.000Z	19 \| good	1.217 \| good	4.86 \| good	21.031 \| good	0.222 \| good	2.467 \| good	0.164 \| good
2026-09-07T04:00:00.000Z	27 \| good	5.114 \| good	22.06 \| good	13.899 \| good	0.477 \| good	4.942 \| good	0.358 \| good
2026-09-07T05:00:00.000Z	33 \| good	6.426 \| good	27.989 \| good	9.139 \| good	0.266 \| good	4.03 \| good	0.358 \| good
2026-09-07T06:00:00.000Z	33 \| good	6.164 \| good	27.974 \| good	7.213 \| good	0.267 \| good	5.252 \| good	0.358 \| good
2026-09-07T07:00:00.000Z	33 \| good	6.133 \| good	27.242 \| good	7.178 \| good	0.218 \| good	4.226 \| good	0.396 \| good
2026-09-07T08:00:00.000Z	27 \| good	5.11 \| good	21.637 \| good	4.653 \| good	0.176 \| good	4.465 \| good	0.357 \| good
2026-09-07T09:00:00.000Z	27 \| good	5.419 \| good	23.418 \| good	3.673 \| good	0.369 \| good	4.108 \| good	0.338 \| good
2026-09-07T10:00:00.000Z	27 \| good	4.77 \| good	20.414 \| good	5.637 \| good	0.311 \| good	3.612 \| good	0.298 \| good
2026-09-07T11:00:00.000Z	22 \| good	4.331 \| good	18.846 \| good	4.045 \| good	0.166 \| good	3.335 \| good	0.259 \| good
2026-09-07T12:00:00.000Z	22 \| good	4.141 \| good	18.004 \| good	6.946 \| good	0.326 \| good	3.57 \| good	0.259 \| good
2026-09-07T12:00:00.000Z	22 \| good	4.331 \| good	18.846 \| good	4.045 \| good	0.166 \| good	3.335 \| good	0.259 \| good
2026-09-07T13:00:00.000Z	11 \| good	0.528 \| good	2.026 \| good	11.799 \| good	0.324 \| good	1.833 \| good	0.157 \| good
2026-09-07T14:00:00.000Z	19 \| good	0.78 \| good	3.063 \| good	20.66 \| good	0.401 \| good	1.161 \| good	0.156 \| good
2026-09-07T15:00:00.000Z	32 \| good	0.804 \| good	3.254 \| good	34.604 \| good	0.387 \| good	0.688 \| good	0.152 \| good
2026-09-07T16:00:00.000Z	32 \| good	0.751 \| good	2.469 \| good	35.39 \| good	0.307 \| good	0.472 \| good	0.146 \| good
2026-09-07T17:00:00.000Z	34 \| good	1.574 \| good	6.383 \| good	37.241 \| good	0.255 \| good	0.386 \| good	0.143 \| good
2026-09-07T18:00:00.000Z	35 \| good	0.785 \| good	3.063 \| good	37.67 \| good	0.227 \| good	0.364 \| good	0.142 \| good
2026-09-07T19:00:00.000Z	35 \| good	0.734 \| good	2.582 \| good	37.745 \| good	0.214 \| good	0.372 \| good	0.142 \| good
2026-09-07T20:00:00.000Z	32 \| good	0.701 \| good	2.554 \| good	34.795 \| good	0.207 \| good	0.397 \| good	0.142 \| good
2026-09-07T21:00:00.000Z	31 \| good	0.711 \| good	2.6 \| good	33.173 \| good	0.202 \| good	0.463 \| good	0.143 \| good
2026-09-07T22:00:00.000Z	29 \| good	1.675 \| good	6.972 \| good	30.944 \| good	0.197 \| good	0.683 \| good	0.145 \| good
2026-09-07T23:00:00.000Z	27 \| good	1.257 \| good	5.155 \| good	28.991 \| good	0.192 \| good	2.235 \| good	0.162 \| good
2026-09-08T00:00:00.000Z	24 \| good	2.071 \| good	8.546 \| good	26.014 \| good	0.205 \| good	5.418 \| good	0.19 \| good
2026-09-08T01:00:00.000Z	23 \| good	3.434 \| good	15.204 \| good	25.37 \| good	0.221 \| good	7.662 \| good	0.211 \| good
2026-09-08T02:00:00.000Z	21 \| good	1.974 \| good	7.947 \| good	23.102 \| good	0.233 \| good	7.933 \| good	0.214 \| good
2026-09-08T03:00:00.000Z	17 \| good	2.11 \| good	8.578 \| good	18.137 \| good	0.259 \| good	7.727 \| good	0.213 \| good
2026-09-08T04:00:00.000Z	22 \| good	4.021 \| good	17.679 \| good	18.285 \| good	0.289 \| good	8.429 \| good	0.221 \| good
2026-09-08T05:00:00.000Z	27 \| good	4.651 \| good	20.497 \| good	16.774 \| good	0.304 \| good	9.561 \| good	0.233 \| good
2026-09-08T06:00:00.000Z	22 \| good	4.347 \| good	18.851 \| good	12.576 \| good	0.305 \| good	10.46 \| good	0.241 \| good
2026-09-08T07:00:00.000Z	27 \| good	5.058 \| good	21.827 \| good	12.496 \| good	0.306 \| good	11.259 \| good	0.247 \| good
2026-09-08T08:00:00.000Z	22 \| good	3.738 \| good	16.234 \| good	12.606 \| good	0.312 \| good	12.126 \| good	0.253 \| good
2026-09-08T09:00:00.000Z	33 \| good	6.125 \| good	27.139 \| good	9.372 \| good	0.323 \| good	12.871 \| good	0.258 \| good
2026-09-08T10:00:00.000Z	38 \| good	6.908 \| good	30.565 \| good	7.608 \| good	0.341 \| good	13.595 \| good	0.264 \| good
2026-09-08T11:00:00.000Z	38 \| good	7.386 \| good	32.374 \| good	6.697 \| good	0.368 \| good	13.178 \| good	0.273 \| good
2026-09-08T12:00:00.000Z	33 \| good	6.241 \| good	27.688 \| good	9.322 \| good	0.395 \| good	11.288 \| good	0.293 \| good
2026-09-08T13:00:00.000Z	33 \| good	6.166 \| good	27.335 \| good	20.148 \| good	0.601 \| good	6.094 \| good	0.247 \| good
2026-09-08T14:00:00.000Z	31 \| good	5.377 \| good	23.175 \| good	32.746 \| good	0.638 \| good	2.956 \| good	0.216 \| good
2026-09-08T15:00:00.000Z	38 \| good	5.387 \| good	23.322 \| good	40.868 \| good	0.533 \| good	1.444 \| good	0.199 \| good
2026-09-08T16:00:00.000Z	41 \| good	5.025 \| good	21.68 \| good	43.875 \| good	0.453 \| good	0.85 \| good	0.188 \| good
2026-09-08T17:00:00.000Z	43 \| good	6.829 \| good	30.154 \| good	46.425 \| good	0.439 \| good	0.633 \| good	0.184 \| good
2026-09-08T18:00:00.000Z	44 \| good	5.661 \| good	24.364 \| good	47.429 \| good	0.427 \| good	0.547 \| good	0.183 \| good
2026-09-08T19:00:00.000Z	44 \| good	3.765 \| good	16.43 \| good	46.666 \| good	0.4 \| good	0.53 \| good	0.182 \| good
2026-09-08T20:00:00.000Z	45 \| good	6.582 \| good	29.505 \| good	48.642 \| good	0.38 \| good	0.551 \| good	0.181 \| good
2026-09-08T21:00:00.000Z	44 \| good	6.264 \| good	28.066 \| good	46.718 \| good	0.367 \| good	0.615 \| good	0.181 \| good
2026-09-08T22:00:00.000Z	40 \| good	6.537 \| good	29.128 \| good	43.072 \| good	0.355 \| good	0.926 \| good	0.183 \| good
2026-09-08T23:00:00.000Z	37 \| good	6.008 \| good	26.865 \| good	39.708 \| good	0.333 \| good	2.383 \| good	0.2 \| good
2026-09-09T00:00:00.000Z	30 \| good	4.471 \| good	19.59 \| good	31.795 \| good	0.336 \| good	4.785 \| good	0.222 \| good
2026-09-09T01:00:00.000Z	38 \| good	6.653 \| good	29.595 \| good	28.163 \| good	0.338 \| good	5.405 \| good	0.227 \| good
2026-09-09T02:00:00.000Z	27 \| good	5.45 \| good	23.624 \| good	26.959 \| good	0.33 \| good	5.083 \| good	0.221 \| good
2026-09-09T03:00:00.000Z	33 \| good	5.932 \| good	26.196 \| good	26.754 \| good	0.319 \| good	4.461 \| good	0.211 \| good
2026-09-09T04:00:00.000Z	38 \| good	7.417 \| good	32.461 \| good	28.428 \| good	0.317 \| good	3.851 \| good	0.201 \| good
2026-09-09T05:00:00.000Z	44 \| good	7.972 \| good	34.886 \| good	27.645 \| good	0.333 \| good	3.281 \| good	0.195 \| good
2026-09-09T06:00:00.000Z	49 \| good	8.848 \| good	39.177 \| good	23.712 \| good	0.363 \| good	2.901 \| good	0.191 \| good
2026-09-09T07:00:00.000Z	52 \| moderate	10.08 \| good	44.562 \| good	22.762 \| good	0.381 \| good	2.747 \| good	0.19 \| good
2026-09-09T08:00:00.000Z	49 \| good	9.181 \| good	41.376 \| good	18.223 \| good	0.379 \| good	2.726 \| good	0.19 \| good
2026-09-09T09:00:00.000Z	52 \| moderate	9.536 \| good	42.547 \| good	13.432 \| good	0.367 \| good	2.732 \| good	0.189 \| good
2026-09-09T10:00:00.000Z	49 \| good	8.829 \| good	38.61 \| good	9.923 \| good	0.348 \| good	2.764 \| good	0.188 \| good
2026-09-09T11:00:00.000Z	44 \| good	8.345 \| good	36.547 \| good	8.623 \| good	0.328 \| good	2.884 \| good	0.189 \| good
2026-09-09T12:00:00.000Z	38 \| good	6.605 \| good	7.305 \| good	27.217 \| good	0.314 \| good	3.02 \| good	0.196 \| good

Halfway

Empower business decisions with accurate air quality data

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

0.26ppm

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 Halfway, Maryland updated?

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

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

The worst air quality in Halfway, Maryland was recorded at 06:00:00 on 2026-09-06.

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

The best air quality in Halfway, Maryland was recorded at 03:00:00 on 2026-09-07.

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

The real-time air quality index in Halfway, Maryland is 22, currently categorized as Good.

Which pollutant is found most often in Halfway, Maryland?

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

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

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

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

The measured PM_2.5 levels in Halfway, Maryland at present are 4.331 μg/m³.

What are the current PM₁₀ levels at Halfway, Maryland?

The current PM₁₀ levels in Halfway, Maryland are 18.846 μg/m³.

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

The current carbon monoxide (CO) level in Halfway, Maryland is 0.259 ppm.

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

The current sulfur dioxide (SO₂) levels in Halfway, Maryland are 0.166 ppb.

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

The current ozone (O₃) levels at Halfway, Maryland is 4.045 ppm.

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

The current nitrogen dioxide (NO₂) levels at Halfway, Maryland is 3.335 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-05T13:00:00.000Z	27 \| good	4.774 \| good	20.303 \| good	19.658 \| good	0.236 \| good	5.023 \| good	0.242 \| good
2026-09-05T14:00:00.000Z	22 \| good	4.326 \| good	18.682 \| good	22.517 \| good	0.24 \| good	2.841 \| good	0.242 \| good
2026-09-05T15:00:00.000Z	27 \| good	4.682 \| good	20.48 \| good	24.395 \| good	0.268 \| good	2.083 \| good	0.22 \| good
2026-09-05T16:00:00.000Z	29 \| good	3.958 \| good	16.801 \| good	30.725 \| good	0.295 \| good	2.433 \| good	0.22 \| good
2026-09-05T17:00:00.000Z	28 \| good	3.585 \| good	15.844 \| good	30.075 \| good	0.272 \| good	2.022 \| good	0.22 \| good
2026-09-05T18:00:00.000Z	33 \| good	5.657 \| good	23.949 \| good	33.846 \| good	0.189 \| good	1.652 \| good	0.201 \| good
2026-09-05T19:00:00.000Z	34 \| good	5.795 \| good	24.909 \| good	36.965 \| good	0.189 \| good	1.356 \| good	0.201 \| good
2026-09-05T20:00:00.000Z	35 \| good	3.65 \| good	15.931 \| good	37.967 \| good	0.23 \| good	1.773 \| good	0.2 \| good
2026-09-05T21:00:00.000Z	34 \| good	1.681 \| good	6.898 \| good	36.984 \| good	0.26 \| good	1.302 \| good	0.22 \| good
2026-09-05T22:00:00.000Z	36 \| good	2.882 \| good	11.857 \| good	38.668 \| good	0.267 \| good	2.63 \| good	0.24 \| good
2026-09-05T23:00:00.000Z	35 \| good	3.494 \| good	15.464 \| good	37.854 \| good	0.242 \| good	2.681 \| good	0.24 \| good
2026-09-06T00:00:00.000Z	31 \| good	3.303 \| good	14.419 \| good	34.118 \| good	0.31 \| good	2.84 \| good	0.22 \| good
2026-09-06T01:00:00.000Z	29 \| good	4.152 \| good	18.217 \| good	30.836 \| good	0.291 \| good	3.593 \| good	0.277 \| good
2026-09-06T02:00:00.000Z	33 \| good	5.548 \| good	23.76 \| good	26.764 \| good	0.223 \| good	4.568 \| good	0.318 \| good
2026-09-06T03:00:00.000Z	22 \| good	1.252 \| good	5.227 \| good	24.282 \| good	0.203 \| good	3.208 \| good	0.174 \| good
2026-09-06T04:00:00.000Z	23 \| good	4.358 \| good	18.703 \| good	25.295 \| good	0.255 \| good	5.696 \| good	0.319 \| good
2026-09-06T05:00:00.000Z	27 \| good	5.203 \| good	22.601 \| good	19.654 \| good	0.185 \| good	5.853 \| good	0.299 \| good
2026-09-06T06:00:00.000Z	38 \| good	6.584 \| good	29.044 \| good	15.71 \| good	0.164 \| good	5.015 \| good	0.298 \| good
2026-09-06T07:00:00.000Z	38 \| good	6.569 \| good	28.966 \| good	15.693 \| good	0.164 \| good	6.047 \| good	0.355 \| good
2026-09-06T08:00:00.000Z	38 \| good	7.265 \| good	31.549 \| good	10.118 \| good	0.192 \| good	5.143 \| good	0.317 \| good
2026-09-06T09:00:00.000Z	38 \| good	6.581 \| good	29.643 \| good	5.719 \| good	0.2 \| good	4.056 \| good	0.298 \| good
2026-09-06T10:00:00.000Z	33 \| good	5.835 \| good	25.04 \| good	5.675 \| good	0.342 \| good	4.064 \| good	0.279 \| good
2026-09-06T11:00:00.000Z	27 \| good	5.446 \| good	23.093 \| good	7.339 \| good	0.224 \| good	4.546 \| good	0.259 \| good
2026-09-06T12:00:00.000Z	27 \| good	4.812 \| good	21.278 \| good	12.828 \| good	0.24 \| good	4.214 \| good	0.298 \| good
2026-09-06T13:00:00.000Z	27 \| good	4.779 \| good	21.015 \| good	13.047 \| good	0.238 \| good	3.445 \| good	0.279 \| good
2026-09-06T14:00:00.000Z	22 \| good	4.16 \| good	18.227 \| good	17.051 \| good	0.269 \| good	2.356 \| good	0.24 \| good
2026-09-06T15:00:00.000Z	19 \| good	2.736 \| good	10.964 \| good	20.885 \| good	0.275 \| good	1.998 \| good	0.221 \| good
2026-09-06T16:00:00.000Z	23 \| good	2.57 \| good	10.486 \| good	24.747 \| good	0.235 \| good	1.359 \| good	0.22 \| good
2026-09-06T17:00:00.000Z	24 \| good	1.892 \| good	8.176 \| good	25.837 \| good	0.231 \| good	1.224 \| good	0.181 \| good
2026-09-06T18:00:00.000Z	38 \| good	6.546 \| good	29.721 \| good	27.928 \| good	0.21 \| good	0.733 \| good	0.201 \| good
2026-09-06T19:00:00.000Z	29 \| good	1.64 \| good	6.48 \| good	30.755 \| good	0.186 \| good	0.897 \| good	0.161 \| good
2026-09-06T20:00:00.000Z	29 \| good	1.945 \| good	7.868 \| good	30.881 \| good	0.231 \| good	0.729 \| good	0.18 \| good
2026-09-06T21:00:00.000Z	27 \| good	2.004 \| good	8.096 \| good	29.132 \| good	0.245 \| good	1.303 \| good	0.18 \| good
2026-09-06T22:00:00.000Z	25 \| good	1.094 \| good	4.233 \| good	27.078 \| good	0.202 \| good	1.181 \| good	0.18 \| good
2026-09-06T23:00:00.000Z	24 \| good	0.714 \| good	3.373 \| good	26.215 \| good	0.343 \| good	1.643 \| good	0.22 \| good
2026-09-07T00:00:00.000Z	26 \| good	2.343 \| good	9.538 \| good	27.768 \| good	0.271 \| good	1.939 \| good	0.259 \| good
2026-09-07T01:00:00.000Z	24 \| good	3.167 \| good	14.111 \| good	25.781 \| good	0.201 \| good	2.433 \| good	0.259 \| good
2026-09-07T02:00:00.000Z	27 \| good	5.332 \| good	23.215 \| good	21.769 \| good	0.226 \| good	3.352 \| good	0.298 \| good
2026-09-07T03:00:00.000Z	19 \| good	1.217 \| good	4.86 \| good	21.031 \| good	0.222 \| good	2.467 \| good	0.164 \| good
2026-09-07T04:00:00.000Z	27 \| good	5.114 \| good	22.06 \| good	13.899 \| good	0.477 \| good	4.942 \| good	0.358 \| good
2026-09-07T05:00:00.000Z	33 \| good	6.426 \| good	27.989 \| good	9.139 \| good	0.266 \| good	4.03 \| good	0.358 \| good
2026-09-07T06:00:00.000Z	33 \| good	6.164 \| good	27.974 \| good	7.213 \| good	0.267 \| good	5.252 \| good	0.358 \| good
2026-09-07T07:00:00.000Z	33 \| good	6.133 \| good	27.242 \| good	7.178 \| good	0.218 \| good	4.226 \| good	0.396 \| good
2026-09-07T08:00:00.000Z	27 \| good	5.11 \| good	21.637 \| good	4.653 \| good	0.176 \| good	4.465 \| good	0.357 \| good
2026-09-07T09:00:00.000Z	27 \| good	5.419 \| good	23.418 \| good	3.673 \| good	0.369 \| good	4.108 \| good	0.338 \| good
2026-09-07T10:00:00.000Z	27 \| good	4.77 \| good	20.414 \| good	5.637 \| good	0.311 \| good	3.612 \| good	0.298 \| good
2026-09-07T11:00:00.000Z	22 \| good	4.331 \| good	18.846 \| good	4.045 \| good	0.166 \| good	3.335 \| good	0.259 \| good
2026-09-07T12:00:00.000Z	22 \| good	4.141 \| good	18.004 \| good	6.946 \| good	0.326 \| good	3.57 \| good	0.259 \| good
2026-09-07T12:00:00.000Z	22 \| good	4.331 \| good	18.846 \| good	4.045 \| good	0.166 \| good	3.335 \| good	0.259 \| good
2026-09-07T13:00:00.000Z	11 \| good	0.528 \| good	2.026 \| good	11.799 \| good	0.324 \| good	1.833 \| good	0.157 \| good
2026-09-07T14:00:00.000Z	19 \| good	0.78 \| good	3.063 \| good	20.66 \| good	0.401 \| good	1.161 \| good	0.156 \| good
2026-09-07T15:00:00.000Z	32 \| good	0.804 \| good	3.254 \| good	34.604 \| good	0.387 \| good	0.688 \| good	0.152 \| good
2026-09-07T16:00:00.000Z	32 \| good	0.751 \| good	2.469 \| good	35.39 \| good	0.307 \| good	0.472 \| good	0.146 \| good
2026-09-07T17:00:00.000Z	34 \| good	1.574 \| good	6.383 \| good	37.241 \| good	0.255 \| good	0.386 \| good	0.143 \| good
2026-09-07T18:00:00.000Z	35 \| good	0.785 \| good	3.063 \| good	37.67 \| good	0.227 \| good	0.364 \| good	0.142 \| good
2026-09-07T19:00:00.000Z	35 \| good	0.734 \| good	2.582 \| good	37.745 \| good	0.214 \| good	0.372 \| good	0.142 \| good
2026-09-07T20:00:00.000Z	32 \| good	0.701 \| good	2.554 \| good	34.795 \| good	0.207 \| good	0.397 \| good	0.142 \| good
2026-09-07T21:00:00.000Z	31 \| good	0.711 \| good	2.6 \| good	33.173 \| good	0.202 \| good	0.463 \| good	0.143 \| good
2026-09-07T22:00:00.000Z	29 \| good	1.675 \| good	6.972 \| good	30.944 \| good	0.197 \| good	0.683 \| good	0.145 \| good
2026-09-07T23:00:00.000Z	27 \| good	1.257 \| good	5.155 \| good	28.991 \| good	0.192 \| good	2.235 \| good	0.162 \| good
2026-09-08T00:00:00.000Z	24 \| good	2.071 \| good	8.546 \| good	26.014 \| good	0.205 \| good	5.418 \| good	0.19 \| good
2026-09-08T01:00:00.000Z	23 \| good	3.434 \| good	15.204 \| good	25.37 \| good	0.221 \| good	7.662 \| good	0.211 \| good
2026-09-08T02:00:00.000Z	21 \| good	1.974 \| good	7.947 \| good	23.102 \| good	0.233 \| good	7.933 \| good	0.214 \| good
2026-09-08T03:00:00.000Z	17 \| good	2.11 \| good	8.578 \| good	18.137 \| good	0.259 \| good	7.727 \| good	0.213 \| good
2026-09-08T04:00:00.000Z	22 \| good	4.021 \| good	17.679 \| good	18.285 \| good	0.289 \| good	8.429 \| good	0.221 \| good
2026-09-08T05:00:00.000Z	27 \| good	4.651 \| good	20.497 \| good	16.774 \| good	0.304 \| good	9.561 \| good	0.233 \| good
2026-09-08T06:00:00.000Z	22 \| good	4.347 \| good	18.851 \| good	12.576 \| good	0.305 \| good	10.46 \| good	0.241 \| good
2026-09-08T07:00:00.000Z	27 \| good	5.058 \| good	21.827 \| good	12.496 \| good	0.306 \| good	11.259 \| good	0.247 \| good
2026-09-08T08:00:00.000Z	22 \| good	3.738 \| good	16.234 \| good	12.606 \| good	0.312 \| good	12.126 \| good	0.253 \| good
2026-09-08T09:00:00.000Z	33 \| good	6.125 \| good	27.139 \| good	9.372 \| good	0.323 \| good	12.871 \| good	0.258 \| good
2026-09-08T10:00:00.000Z	38 \| good	6.908 \| good	30.565 \| good	7.608 \| good	0.341 \| good	13.595 \| good	0.264 \| good
2026-09-08T11:00:00.000Z	38 \| good	7.386 \| good	32.374 \| good	6.697 \| good	0.368 \| good	13.178 \| good	0.273 \| good
2026-09-08T12:00:00.000Z	33 \| good	6.241 \| good	27.688 \| good	9.322 \| good	0.395 \| good	11.288 \| good	0.293 \| good
2026-09-08T13:00:00.000Z	33 \| good	6.166 \| good	27.335 \| good	20.148 \| good	0.601 \| good	6.094 \| good	0.247 \| good
2026-09-08T14:00:00.000Z	31 \| good	5.377 \| good	23.175 \| good	32.746 \| good	0.638 \| good	2.956 \| good	0.216 \| good
2026-09-08T15:00:00.000Z	38 \| good	5.387 \| good	23.322 \| good	40.868 \| good	0.533 \| good	1.444 \| good	0.199 \| good
2026-09-08T16:00:00.000Z	41 \| good	5.025 \| good	21.68 \| good	43.875 \| good	0.453 \| good	0.85 \| good	0.188 \| good
2026-09-08T17:00:00.000Z	43 \| good	6.829 \| good	30.154 \| good	46.425 \| good	0.439 \| good	0.633 \| good	0.184 \| good
2026-09-08T18:00:00.000Z	44 \| good	5.661 \| good	24.364 \| good	47.429 \| good	0.427 \| good	0.547 \| good	0.183 \| good
2026-09-08T19:00:00.000Z	44 \| good	3.765 \| good	16.43 \| good	46.666 \| good	0.4 \| good	0.53 \| good	0.182 \| good
2026-09-08T20:00:00.000Z	45 \| good	6.582 \| good	29.505 \| good	48.642 \| good	0.38 \| good	0.551 \| good	0.181 \| good
2026-09-08T21:00:00.000Z	44 \| good	6.264 \| good	28.066 \| good	46.718 \| good	0.367 \| good	0.615 \| good	0.181 \| good
2026-09-08T22:00:00.000Z	40 \| good	6.537 \| good	29.128 \| good	43.072 \| good	0.355 \| good	0.926 \| good	0.183 \| good
2026-09-08T23:00:00.000Z	37 \| good	6.008 \| good	26.865 \| good	39.708 \| good	0.333 \| good	2.383 \| good	0.2 \| good
2026-09-09T00:00:00.000Z	30 \| good	4.471 \| good	19.59 \| good	31.795 \| good	0.336 \| good	4.785 \| good	0.222 \| good
2026-09-09T01:00:00.000Z	38 \| good	6.653 \| good	29.595 \| good	28.163 \| good	0.338 \| good	5.405 \| good	0.227 \| good
2026-09-09T02:00:00.000Z	27 \| good	5.45 \| good	23.624 \| good	26.959 \| good	0.33 \| good	5.083 \| good	0.221 \| good
2026-09-09T03:00:00.000Z	33 \| good	5.932 \| good	26.196 \| good	26.754 \| good	0.319 \| good	4.461 \| good	0.211 \| good
2026-09-09T04:00:00.000Z	38 \| good	7.417 \| good	32.461 \| good	28.428 \| good	0.317 \| good	3.851 \| good	0.201 \| good
2026-09-09T05:00:00.000Z	44 \| good	7.972 \| good	34.886 \| good	27.645 \| good	0.333 \| good	3.281 \| good	0.195 \| good
2026-09-09T06:00:00.000Z	49 \| good	8.848 \| good	39.177 \| good	23.712 \| good	0.363 \| good	2.901 \| good	0.191 \| good
2026-09-09T07:00:00.000Z	52 \| moderate	10.08 \| good	44.562 \| good	22.762 \| good	0.381 \| good	2.747 \| good	0.19 \| good
2026-09-09T08:00:00.000Z	49 \| good	9.181 \| good	41.376 \| good	18.223 \| good	0.379 \| good	2.726 \| good	0.19 \| good
2026-09-09T09:00:00.000Z	52 \| moderate	9.536 \| good	42.547 \| good	13.432 \| good	0.367 \| good	2.732 \| good	0.189 \| good
2026-09-09T10:00:00.000Z	49 \| good	8.829 \| good	38.61 \| good	9.923 \| good	0.348 \| good	2.764 \| good	0.188 \| good
2026-09-09T11:00:00.000Z	44 \| good	8.345 \| good	36.547 \| good	8.623 \| good	0.328 \| good	2.884 \| good	0.189 \| good
2026-09-09T12:00:00.000Z	38 \| good	6.605 \| good	7.305 \| good	27.217 \| good	0.314 \| good	3.02 \| good	0.196 \| good

Real-time air quality index in Halfway, Maryland today

Common air pollutants in Halfway, Maryland

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Halfway, Maryland air quality forecast and history

Empower business decisions with accurate air quality data

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

Air quality in nearby cities

Hagerstown, Maryland

Waynesboro, Pennsylvania

Martinsburg, West Virginia

Guilford, Pennsylvania

Chambersburg, Pennsylvania

Frederick, 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 Halfway, Maryland updated?

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

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

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

Which pollutant is found most often in Halfway, Maryland?

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

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

What are the current PM10 levels at Halfway, Maryland?

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

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

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

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

What are the current PM₁₀ levels at Halfway, Maryland?

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

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

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