What are the current PM10 levels at Catonsville, Maryland?

The current PM10 levels in Catonsville, Maryland are 54.93 μg/m3.

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

The current sulfur dioxide (SO2) levels in Catonsville, Maryland are 0.13 ppb.

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

The current ozone (O3) levels at Catonsville, Maryland is 33.826 ppm.

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

The current nitrogen dioxide (NO2) levels at Catonsville, Maryland is 10.803 ppb.

Real-time air quality index in Catonsville, Maryland today

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

The measured PM2.5 levels in Catonsville, Maryland at present are 12.385 μg/m3.

Stay updated with real-time air quality in Catonsville, 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

Catonsville, Maryland

Last updated: ... (Local time)

Common air pollutants in Catonsville, Maryland

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

11.29 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

50.61 μg/m³

155

255

425

605+

Ozone (O₃)

30.18 ppb

201

201+

Sulfur Dioxide (SO₂)

0.14 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

14.43 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.24 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Catonsville, Maryland

Get Live Pollen Counts

Catonsville, Maryland

Scroll To Air Quality Map

Track live Catonsville, Maryland air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-08-11T13:00:00.000Z	54 \| moderate	11.376 \| good	39.91 \| good	27.903 \| good	0.135 \| good	12.205 \| good	0.328 \| good
2026-08-11T14:00:00.000Z	60 \| moderate	14.134 \| fine	58.3 \| fine	33.664 \| good	0.186 \| good	8.917 \| good	0.407 \| good
2026-08-11T15:00:00.000Z	66 \| moderate	17.106 \| fine	74.075 \| fine	33.358 \| good	0.451 \| good	10.483 \| good	0.365 \| good
2026-08-11T16:00:00.000Z	64 \| moderate	16.299 \| fine	61.365 \| fine	43.29 \| good	0.769 \| good	9.045 \| good	0.279 \| good
2026-08-11T17:00:00.000Z	64 \| moderate	15.864 \| fine	57.976 \| fine	49.801 \| good	0.223 \| good	7.972 \| good	0.241 \| good
2026-08-11T18:00:00.000Z	60 \| moderate	13.724 \| fine	67.152 \| fine	53.107 \| good	0.45 \| good	5.027 \| good	0.241 \| good
2026-08-11T19:00:00.000Z	60 \| moderate	13.924 \| fine	60.839 \| fine	55.404 \| fine	0.346 \| good	5.8 \| good	0.279 \| good
2026-08-11T20:00:00.000Z	64 \| moderate	13.795 \| fine	57.402 \| fine	59.453 \| fine	0.224 \| good	5.847 \| good	0.241 \| good
2026-08-11T21:00:00.000Z	58 \| moderate	13.478 \| fine	60.728 \| fine	56.109 \| fine	0.188 \| good	6.439 \| good	0.255 \| good
2026-08-11T22:00:00.000Z	56 \| moderate	11.856 \| good	51.944 \| good	53.653 \| good	0.134 \| good	6.423 \| good	0.265 \| good
2026-08-11T23:00:00.000Z	54 \| moderate	10.797 \| good	48.241 \| good	51.148 \| good	0.146 \| good	7.181 \| good	0.241 \| good
2026-08-12T00:00:00.000Z	52 \| moderate	10.004 \| good	47.959 \| good	50.048 \| good	0.146 \| good	8.92 \| good	0.227 \| good
2026-08-12T01:00:00.000Z	54 \| moderate	10.847 \| good	54.825 \| good	44.955 \| good	0.141 \| good	9.555 \| good	0.227 \| good
2026-08-12T02:00:00.000Z	56 \| moderate	11.803 \| good	47.028 \| good	43.642 \| good	0.2 \| good	11.475 \| good	0.227 \| good
2026-08-12T03:00:00.000Z	44 \| good	7.865 \| good	34.168 \| good	26.814 \| good	0.627 \| good	12.015 \| good	0.27 \| good
2026-08-12T04:00:00.000Z	52 \| moderate	9.836 \| good	47.555 \| good	40.63 \| good	0.219 \| good	9.331 \| good	0.227 \| good
2026-08-12T05:00:00.000Z	52 \| moderate	9.964 \| good	43.848 \| good	38.814 \| good	0.219 \| good	10.193 \| good	0.227 \| good
2026-08-12T06:00:00.000Z	52 \| moderate	10.489 \| good	54.619 \| good	32.997 \| good	0.211 \| good	9.167 \| good	0.214 \| good
2026-08-12T07:00:00.000Z	56 \| moderate	11.985 \| good	58.162 \| fine	31.351 \| good	0.256 \| good	9.466 \| good	0.214 \| good
2026-08-12T08:00:00.000Z	54 \| moderate	10.823 \| good	49.24 \| good	30.59 \| good	0.245 \| good	8.001 \| good	0.214 \| good
2026-08-12T09:00:00.000Z	49 \| good	9.097 \| good	49.843 \| good	29.409 \| good	0.181 \| good	8.174 \| good	0.214 \| good
2026-08-12T10:00:00.000Z	54 \| moderate	11.094 \| good	59.296 \| fine	28.102 \| good	0.189 \| good	12.839 \| good	0.214 \| good
2026-08-12T11:00:00.000Z	52 \| moderate	10.132 \| good	44.435 \| good	24.79 \| good	0.238 \| good	12.691 \| good	0.265 \| good
2026-08-12T12:00:00.000Z	58 \| moderate	12.525 \| fine	48.464 \| good	28.884 \| good	0.359 \| good	11.278 \| good	0.227 \| good
2026-08-12T13:00:00.000Z	56 \| moderate	11.52 \| good	48.072 \| good	29.148 \| good	0.374 \| good	11.802 \| good	0.255 \| good
2026-08-12T14:00:00.000Z	56 \| moderate	11.699 \| good	55.173 \| fine	31.703 \| good	0.234 \| good	10.084 \| good	0.255 \| good
2026-08-12T15:00:00.000Z	56 \| moderate	11.696 \| good	49.478 \| good	33.401 \| good	0.241 \| good	9.001 \| good	0.255 \| good
2026-08-12T16:00:00.000Z	54 \| moderate	11.297 \| good	53.215 \| good	37.852 \| good	0.242 \| good	3.496 \| good	0.293 \| good
2026-08-12T17:00:00.000Z	52 \| moderate	10.326 \| good	42.85 \| good	40.539 \| good	0.246 \| good	4.597 \| good	0.24 \| good
2026-08-12T18:00:00.000Z	49 \| good	9.325 \| good	41.026 \| good	45.222 \| good	0.213 \| good	4.643 \| good	0.258 \| good
2026-08-12T19:00:00.000Z	49 \| good	9.252 \| good	43.743 \| good	48.445 \| good	0.217 \| good	6.881 \| good	0.233 \| good
2026-08-12T20:00:00.000Z	54 \| moderate	10.577 \| good	46.088 \| good	48.862 \| good	0.164 \| good	7.013 \| good	0.272 \| good
2026-08-12T21:00:00.000Z	54 \| moderate	11.223 \| good	52.063 \| good	50.269 \| good	0.526 \| good	6.801 \| good	0.268 \| good
2026-08-12T22:00:00.000Z	54 \| moderate	10.897 \| good	51.655 \| good	48.321 \| good	0.476 \| good	6.782 \| good	0.293 \| good
2026-08-12T23:00:00.000Z	54 \| moderate	11.173 \| good	45.019 \| good	45.848 \| good	0.193 \| good	10.668 \| good	0.332 \| good
2026-08-13T00:00:00.000Z	58 \| moderate	12.532 \| fine	44.146 \| good	45.838 \| good	0.197 \| good	15.848 \| good	0.346 \| good
2026-08-13T01:00:00.000Z	60 \| moderate	13.63 \| fine	58.73 \| fine	40.307 \| good	0.175 \| good	15.236 \| good	0.332 \| good
2026-08-13T02:00:00.000Z	58 \| moderate	12.769 \| fine	56.718 \| fine	33.76 \| good	0.193 \| good	10.563 \| good	0.332 \| good
2026-08-13T03:00:00.000Z	60 \| moderate	14.15 \| fine	53.478 \| good	32.198 \| good	0.324 \| good	11.234 \| good	0.356 \| good
2026-08-13T04:00:00.000Z	58 \| moderate	13.312 \| fine	55.547 \| fine	30.672 \| good	1.114 \| good	14.784 \| good	0.368 \| good
2026-08-13T05:00:00.000Z	58 \| moderate	13.038 \| fine	57.067 \| fine	30.132 \| good	0.277 \| good	11.808 \| good	0.302 \| good
2026-08-13T06:00:00.000Z	58 \| moderate	12.75 \| fine	54.387 \| good	31.665 \| good	0.162 \| good	8.295 \| good	0.289 \| good
2026-08-13T07:00:00.000Z	56 \| moderate	12.259 \| fine	55.84 \| fine	32.072 \| good	0.162 \| good	8.059 \| good	0.289 \| good
2026-08-13T08:00:00.000Z	58 \| moderate	12.762 \| fine	59.87 \| fine	29.25 \| good	0.154 \| good	8.493 \| good	0.289 \| good
2026-08-13T09:00:00.000Z	56 \| moderate	12.385 \| fine	54.93 \| good	33.826 \| good	0.13 \| good	10.803 \| good	0.241 \| good
2026-08-13T10:00:00.000Z	54 \| moderate	10.582 \| good	46.251 \| good	27.505 \| good	0.143 \| good	13.852 \| good	0.241 \| good
2026-08-13T11:00:00.000Z	54 \| moderate	11.292 \| good	50.608 \| good	30.178 \| good	0.143 \| good	14.429 \| good	0.239 \| good
2026-08-13T12:00:00.000Z	52 \| moderate	10.103 \| good	46.026 \| good	30 \| good	0.174 \| good	12.561 \| good	0.251 \| good
2026-08-13T12:00:00.000Z	54 \| moderate	11.292 \| good	50.608 \| good	30.178 \| good	0.143 \| good	14.429 \| good	0.239 \| good
2026-08-13T13:00:00.000Z	52 \| moderate	10.484 \| good	46.63 \| good	30.566 \| good	0.796 \| good	2.813 \| good	0.189 \| good
2026-08-13T14:00:00.000Z	56 \| moderate	12.469 \| fine	56.034 \| fine	38.356 \| good	0.742 \| good	1.973 \| good	0.189 \| good
2026-08-13T15:00:00.000Z	58 \| moderate	12.743 \| fine	57.376 \| fine	46.883 \| good	0.686 \| good	1.517 \| good	0.189 \| good
2026-08-13T16:00:00.000Z	56 \| moderate	12.468 \| fine	55.556 \| fine	53.921 \| good	0.608 \| good	1.235 \| good	0.187 \| good
2026-08-13T17:00:00.000Z	58 \| moderate	12.926 \| fine	58.642 \| fine	56.641 \| fine	0.566 \| good	1.089 \| good	0.191 \| good
2026-08-13T18:00:00.000Z	61 \| moderate	11.706 \| good	51.373 \| good	57.537 \| fine	0.552 \| good	1.044 \| good	0.197 \| good
2026-08-13T19:00:00.000Z	67 \| moderate	12.96 \| fine	58.257 \| fine	59.52 \| fine	0.549 \| good	1.09 \| good	0.205 \| good
2026-08-13T20:00:00.000Z	58 \| moderate	12.328 \| fine	55.296 \| fine	56.774 \| fine	0.549 \| good	1.175 \| good	0.212 \| good
2026-08-13T21:00:00.000Z	52 \| moderate	10.339 \| good	45.836 \| good	54.704 \| good	0.549 \| good	1.359 \| good	0.219 \| good
2026-08-13T22:00:00.000Z	54 \| moderate	10.973 \| good	48.844 \| good	50.608 \| good	0.552 \| good	1.786 \| good	0.226 \| good
2026-08-13T23:00:00.000Z	56 \| moderate	11.513 \| good	51.447 \| good	46.373 \| good	0.571 \| good	2.596 \| good	0.235 \| good
2026-08-14T00:00:00.000Z	52 \| moderate	10.201 \| good	44.973 \| good	39.176 \| good	0.63 \| good	6.709 \| good	0.267 \| good
2026-08-14T01:00:00.000Z	54 \| moderate	10.953 \| good	48.285 \| good	38.403 \| good	0.713 \| good	9.798 \| good	0.289 \| good
2026-08-14T02:00:00.000Z	52 \| moderate	10.154 \| good	45.041 \| good	35.645 \| good	0.756 \| good	10.958 \| good	0.297 \| good
2026-08-14T03:00:00.000Z	52 \| moderate	10.089 \| good	44.506 \| good	31.007 \| good	0.79 \| good	12.082 \| good	0.306 \| good
2026-08-14T04:00:00.000Z	56 \| moderate	11.682 \| good	51.912 \| good	29.137 \| good	0.804 \| good	12.234 \| good	0.311 \| good
2026-08-14T05:00:00.000Z	56 \| moderate	11.636 \| good	51.267 \| good	22.209 \| good	0.8 \| good	11.234 \| good	0.309 \| good
2026-08-14T06:00:00.000Z	56 \| moderate	12.124 \| fine	53.466 \| good	15.97 \| good	0.809 \| good	9.628 \| good	0.299 \| good
2026-08-14T07:00:00.000Z	49 \| good	9.218 \| good	41.07 \| good	11.846 \| good	0.824 \| good	8.364 \| good	0.289 \| good
2026-08-14T08:00:00.000Z	52 \| moderate	9.554 \| good	42.876 \| good	7.616 \| good	0.833 \| good	7.434 \| good	0.281 \| good
2026-08-14T09:00:00.000Z	52 \| moderate	10.342 \| good	45.677 \| good	4.988 \| good	0.85 \| good	6.888 \| good	0.278 \| good
2026-08-14T10:00:00.000Z	52 \| moderate	10.166 \| good	45.291 \| good	5.44 \| good	0.873 \| good	7.019 \| good	0.279 \| good
2026-08-14T11:00:00.000Z	52 \| moderate	9.536 \| good	42.409 \| good	8.022 \| good	0.9 \| good	7.182 \| good	0.279 \| good
2026-08-14T12:00:00.000Z	44 \| good	7.83 \| good	34.171 \| good	16.246 \| good	0.948 \| good	6.993 \| good	0.284 \| good
2026-08-14T13:00:00.000Z	38 \| good	6.861 \| good	30.608 \| good	26.028 \| good	1.063 \| good	5.407 \| good	0.28 \| good
2026-08-14T14:00:00.000Z	38 \| good	7.108 \| good	31.452 \| good	34.413 \| good	1.069 \| good	3.989 \| good	0.273 \| good
2026-08-14T15:00:00.000Z	44 \| good	8.256 \| good	36.282 \| good	41.402 \| good	0.983 \| good	2.702 \| good	0.263 \| good
2026-08-14T16:00:00.000Z	49 \| good	9.021 \| good	39.712 \| good	45.749 \| good	0.972 \| good	2.295 \| good	0.261 \| good
2026-08-14T17:00:00.000Z	49 \| good	9.017 \| good	40.709 \| good	48.939 \| good	0.959 \| good	1.968 \| good	0.259 \| good
2026-08-14T18:00:00.000Z	49 \| good	8.527 \| good	37.249 \| good	51.058 \| good	0.901 \| good	2.013 \| good	0.255 \| good
2026-08-14T19:00:00.000Z	52 \| moderate	9.976 \| good	44.216 \| good	52.355 \| good	0.822 \| good	2.144 \| good	0.253 \| good
2026-08-14T20:00:00.000Z	52 \| moderate	9.786 \| good	43.346 \| good	51.192 \| good	0.853 \| good	2.231 \| good	0.253 \| good
2026-08-14T21:00:00.000Z	45 \| good	6.932 \| good	30.626 \| good	49.236 \| good	0.895 \| good	2.621 \| good	0.255 \| good
2026-08-14T22:00:00.000Z	44 \| good	7.19 \| good	31.998 \| good	47.717 \| good	0.937 \| good	3.205 \| good	0.258 \| good
2026-08-14T23:00:00.000Z	52 \| moderate	9.747 \| good	43.436 \| good	40.149 \| good	0.981 \| good	4.119 \| good	0.263 \| good
2026-08-15T00:00:00.000Z	49 \| good	9.197 \| good	41.168 \| good	29.027 \| good	1.034 \| good	6.257 \| good	0.278 \| good
2026-08-15T01:00:00.000Z	52 \| moderate	10.123 \| good	45.039 \| good	25.019 \| good	1.081 \| good	10.37 \| good	0.307 \| good
2026-08-15T02:00:00.000Z	52 \| moderate	10.396 \| good	45.975 \| good	21.151 \| good	1.138 \| good	12.612 \| good	0.321 \| good
2026-08-15T03:00:00.000Z	52 \| moderate	9.883 \| good	43.78 \| good	19.468 \| good	1.181 \| good	14.524 \| good	0.332 \| good
2026-08-15T04:00:00.000Z	56 \| moderate	12.2 \| fine	54.145 \| good	17.09 \| good	1.198 \| good	17.811 \| good	0.354 \| good
2026-08-15T05:00:00.000Z	58 \| moderate	13.274 \| fine	59.603 \| fine	15.821 \| good	1.185 \| good	19.932 \| good	0.374 \| good
2026-08-15T06:00:00.000Z	92 \| moderate	31.225 \| fine	31.585 \| good	22.565 \| good	1.185 \| good	20.946 \| good	0.384 \| good
2026-08-15T07:00:00.000Z	56 \| moderate	11.705 \| good	52.638 \| good	9.617 \| good	1.175 \| good	21.231 \| good	0.387 \| good
2026-08-15T08:00:00.000Z	49 \| good	8.995 \| good	39.95 \| good	8.591 \| good	1.193 \| good	17.862 \| good	0.369 \| good
2026-08-15T09:00:00.000Z	27 \| good	5.2 \| good	22.67 \| good	6.662 \| good	1.261 \| good	12.472 \| good	0.333 \| good
2026-08-15T10:00:00.000Z	38 \| good	7.434 \| good	32.748 \| good	7.794 \| good	1.266 \| good	8.296 \| good	0.294 \| good
2026-08-15T11:00:00.000Z	38 \| good	6.807 \| good	29.874 \| good	8.521 \| good	1.084 \| good	5.955 \| good	0.247 \| good
2026-08-15T12:00:00.000Z	38 \| good	6.806 \| good	6.834 \| good	27.989 \| good	0.861 \| good	4.565 \| good	0.211 \| good

Catonsville

Empower business decisions with accurate air quality data

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

0.23ppm

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

Air quality levels in US

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 Catonsville, Maryland updated?

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

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

The worst air quality in Catonsville, Maryland was recorded at 03:00:00 on 2026-08-13.

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

The best air quality in Catonsville, Maryland was recorded at 07:00:00 on 2026-08-12.

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

The real-time air quality index in Catonsville, Maryland is 56, currently categorized as Moderate.

Which pollutant is found most often in Catonsville, Maryland?

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

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

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

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

The measured PM_2.5 levels in Catonsville, Maryland at present are 12.385 μg/m³.

What are the current PM₁₀ levels at Catonsville, Maryland?

The current PM₁₀ levels in Catonsville, Maryland are 54.93 μg/m³.

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

The current carbon monoxide (CO) level in Catonsville, Maryland is 0.241 ppm.

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

The current sulfur dioxide (SO₂) levels in Catonsville, Maryland are 0.13 ppb.

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

The current ozone (O₃) levels at Catonsville, Maryland is 33.826 ppm.

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

The current nitrogen dioxide (NO₂) levels at Catonsville, Maryland is 10.803 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-08-11T13:00:00.000Z	54 \| moderate	11.376 \| good	39.91 \| good	27.903 \| good	0.135 \| good	12.205 \| good	0.328 \| good
2026-08-11T14:00:00.000Z	60 \| moderate	14.134 \| fine	58.3 \| fine	33.664 \| good	0.186 \| good	8.917 \| good	0.407 \| good
2026-08-11T15:00:00.000Z	66 \| moderate	17.106 \| fine	74.075 \| fine	33.358 \| good	0.451 \| good	10.483 \| good	0.365 \| good
2026-08-11T16:00:00.000Z	64 \| moderate	16.299 \| fine	61.365 \| fine	43.29 \| good	0.769 \| good	9.045 \| good	0.279 \| good
2026-08-11T17:00:00.000Z	64 \| moderate	15.864 \| fine	57.976 \| fine	49.801 \| good	0.223 \| good	7.972 \| good	0.241 \| good
2026-08-11T18:00:00.000Z	60 \| moderate	13.724 \| fine	67.152 \| fine	53.107 \| good	0.45 \| good	5.027 \| good	0.241 \| good
2026-08-11T19:00:00.000Z	60 \| moderate	13.924 \| fine	60.839 \| fine	55.404 \| fine	0.346 \| good	5.8 \| good	0.279 \| good
2026-08-11T20:00:00.000Z	64 \| moderate	13.795 \| fine	57.402 \| fine	59.453 \| fine	0.224 \| good	5.847 \| good	0.241 \| good
2026-08-11T21:00:00.000Z	58 \| moderate	13.478 \| fine	60.728 \| fine	56.109 \| fine	0.188 \| good	6.439 \| good	0.255 \| good
2026-08-11T22:00:00.000Z	56 \| moderate	11.856 \| good	51.944 \| good	53.653 \| good	0.134 \| good	6.423 \| good	0.265 \| good
2026-08-11T23:00:00.000Z	54 \| moderate	10.797 \| good	48.241 \| good	51.148 \| good	0.146 \| good	7.181 \| good	0.241 \| good
2026-08-12T00:00:00.000Z	52 \| moderate	10.004 \| good	47.959 \| good	50.048 \| good	0.146 \| good	8.92 \| good	0.227 \| good
2026-08-12T01:00:00.000Z	54 \| moderate	10.847 \| good	54.825 \| good	44.955 \| good	0.141 \| good	9.555 \| good	0.227 \| good
2026-08-12T02:00:00.000Z	56 \| moderate	11.803 \| good	47.028 \| good	43.642 \| good	0.2 \| good	11.475 \| good	0.227 \| good
2026-08-12T03:00:00.000Z	44 \| good	7.865 \| good	34.168 \| good	26.814 \| good	0.627 \| good	12.015 \| good	0.27 \| good
2026-08-12T04:00:00.000Z	52 \| moderate	9.836 \| good	47.555 \| good	40.63 \| good	0.219 \| good	9.331 \| good	0.227 \| good
2026-08-12T05:00:00.000Z	52 \| moderate	9.964 \| good	43.848 \| good	38.814 \| good	0.219 \| good	10.193 \| good	0.227 \| good
2026-08-12T06:00:00.000Z	52 \| moderate	10.489 \| good	54.619 \| good	32.997 \| good	0.211 \| good	9.167 \| good	0.214 \| good
2026-08-12T07:00:00.000Z	56 \| moderate	11.985 \| good	58.162 \| fine	31.351 \| good	0.256 \| good	9.466 \| good	0.214 \| good
2026-08-12T08:00:00.000Z	54 \| moderate	10.823 \| good	49.24 \| good	30.59 \| good	0.245 \| good	8.001 \| good	0.214 \| good
2026-08-12T09:00:00.000Z	49 \| good	9.097 \| good	49.843 \| good	29.409 \| good	0.181 \| good	8.174 \| good	0.214 \| good
2026-08-12T10:00:00.000Z	54 \| moderate	11.094 \| good	59.296 \| fine	28.102 \| good	0.189 \| good	12.839 \| good	0.214 \| good
2026-08-12T11:00:00.000Z	52 \| moderate	10.132 \| good	44.435 \| good	24.79 \| good	0.238 \| good	12.691 \| good	0.265 \| good
2026-08-12T12:00:00.000Z	58 \| moderate	12.525 \| fine	48.464 \| good	28.884 \| good	0.359 \| good	11.278 \| good	0.227 \| good
2026-08-12T13:00:00.000Z	56 \| moderate	11.52 \| good	48.072 \| good	29.148 \| good	0.374 \| good	11.802 \| good	0.255 \| good
2026-08-12T14:00:00.000Z	56 \| moderate	11.699 \| good	55.173 \| fine	31.703 \| good	0.234 \| good	10.084 \| good	0.255 \| good
2026-08-12T15:00:00.000Z	56 \| moderate	11.696 \| good	49.478 \| good	33.401 \| good	0.241 \| good	9.001 \| good	0.255 \| good
2026-08-12T16:00:00.000Z	54 \| moderate	11.297 \| good	53.215 \| good	37.852 \| good	0.242 \| good	3.496 \| good	0.293 \| good
2026-08-12T17:00:00.000Z	52 \| moderate	10.326 \| good	42.85 \| good	40.539 \| good	0.246 \| good	4.597 \| good	0.24 \| good
2026-08-12T18:00:00.000Z	49 \| good	9.325 \| good	41.026 \| good	45.222 \| good	0.213 \| good	4.643 \| good	0.258 \| good
2026-08-12T19:00:00.000Z	49 \| good	9.252 \| good	43.743 \| good	48.445 \| good	0.217 \| good	6.881 \| good	0.233 \| good
2026-08-12T20:00:00.000Z	54 \| moderate	10.577 \| good	46.088 \| good	48.862 \| good	0.164 \| good	7.013 \| good	0.272 \| good
2026-08-12T21:00:00.000Z	54 \| moderate	11.223 \| good	52.063 \| good	50.269 \| good	0.526 \| good	6.801 \| good	0.268 \| good
2026-08-12T22:00:00.000Z	54 \| moderate	10.897 \| good	51.655 \| good	48.321 \| good	0.476 \| good	6.782 \| good	0.293 \| good
2026-08-12T23:00:00.000Z	54 \| moderate	11.173 \| good	45.019 \| good	45.848 \| good	0.193 \| good	10.668 \| good	0.332 \| good
2026-08-13T00:00:00.000Z	58 \| moderate	12.532 \| fine	44.146 \| good	45.838 \| good	0.197 \| good	15.848 \| good	0.346 \| good
2026-08-13T01:00:00.000Z	60 \| moderate	13.63 \| fine	58.73 \| fine	40.307 \| good	0.175 \| good	15.236 \| good	0.332 \| good
2026-08-13T02:00:00.000Z	58 \| moderate	12.769 \| fine	56.718 \| fine	33.76 \| good	0.193 \| good	10.563 \| good	0.332 \| good
2026-08-13T03:00:00.000Z	60 \| moderate	14.15 \| fine	53.478 \| good	32.198 \| good	0.324 \| good	11.234 \| good	0.356 \| good
2026-08-13T04:00:00.000Z	58 \| moderate	13.312 \| fine	55.547 \| fine	30.672 \| good	1.114 \| good	14.784 \| good	0.368 \| good
2026-08-13T05:00:00.000Z	58 \| moderate	13.038 \| fine	57.067 \| fine	30.132 \| good	0.277 \| good	11.808 \| good	0.302 \| good
2026-08-13T06:00:00.000Z	58 \| moderate	12.75 \| fine	54.387 \| good	31.665 \| good	0.162 \| good	8.295 \| good	0.289 \| good
2026-08-13T07:00:00.000Z	56 \| moderate	12.259 \| fine	55.84 \| fine	32.072 \| good	0.162 \| good	8.059 \| good	0.289 \| good
2026-08-13T08:00:00.000Z	58 \| moderate	12.762 \| fine	59.87 \| fine	29.25 \| good	0.154 \| good	8.493 \| good	0.289 \| good
2026-08-13T09:00:00.000Z	56 \| moderate	12.385 \| fine	54.93 \| good	33.826 \| good	0.13 \| good	10.803 \| good	0.241 \| good
2026-08-13T10:00:00.000Z	54 \| moderate	10.582 \| good	46.251 \| good	27.505 \| good	0.143 \| good	13.852 \| good	0.241 \| good
2026-08-13T11:00:00.000Z	54 \| moderate	11.292 \| good	50.608 \| good	30.178 \| good	0.143 \| good	14.429 \| good	0.239 \| good
2026-08-13T12:00:00.000Z	52 \| moderate	10.103 \| good	46.026 \| good	30 \| good	0.174 \| good	12.561 \| good	0.251 \| good
2026-08-13T12:00:00.000Z	54 \| moderate	11.292 \| good	50.608 \| good	30.178 \| good	0.143 \| good	14.429 \| good	0.239 \| good
2026-08-13T13:00:00.000Z	52 \| moderate	10.484 \| good	46.63 \| good	30.566 \| good	0.796 \| good	2.813 \| good	0.189 \| good
2026-08-13T14:00:00.000Z	56 \| moderate	12.469 \| fine	56.034 \| fine	38.356 \| good	0.742 \| good	1.973 \| good	0.189 \| good
2026-08-13T15:00:00.000Z	58 \| moderate	12.743 \| fine	57.376 \| fine	46.883 \| good	0.686 \| good	1.517 \| good	0.189 \| good
2026-08-13T16:00:00.000Z	56 \| moderate	12.468 \| fine	55.556 \| fine	53.921 \| good	0.608 \| good	1.235 \| good	0.187 \| good
2026-08-13T17:00:00.000Z	58 \| moderate	12.926 \| fine	58.642 \| fine	56.641 \| fine	0.566 \| good	1.089 \| good	0.191 \| good
2026-08-13T18:00:00.000Z	61 \| moderate	11.706 \| good	51.373 \| good	57.537 \| fine	0.552 \| good	1.044 \| good	0.197 \| good
2026-08-13T19:00:00.000Z	67 \| moderate	12.96 \| fine	58.257 \| fine	59.52 \| fine	0.549 \| good	1.09 \| good	0.205 \| good
2026-08-13T20:00:00.000Z	58 \| moderate	12.328 \| fine	55.296 \| fine	56.774 \| fine	0.549 \| good	1.175 \| good	0.212 \| good
2026-08-13T21:00:00.000Z	52 \| moderate	10.339 \| good	45.836 \| good	54.704 \| good	0.549 \| good	1.359 \| good	0.219 \| good
2026-08-13T22:00:00.000Z	54 \| moderate	10.973 \| good	48.844 \| good	50.608 \| good	0.552 \| good	1.786 \| good	0.226 \| good
2026-08-13T23:00:00.000Z	56 \| moderate	11.513 \| good	51.447 \| good	46.373 \| good	0.571 \| good	2.596 \| good	0.235 \| good
2026-08-14T00:00:00.000Z	52 \| moderate	10.201 \| good	44.973 \| good	39.176 \| good	0.63 \| good	6.709 \| good	0.267 \| good
2026-08-14T01:00:00.000Z	54 \| moderate	10.953 \| good	48.285 \| good	38.403 \| good	0.713 \| good	9.798 \| good	0.289 \| good
2026-08-14T02:00:00.000Z	52 \| moderate	10.154 \| good	45.041 \| good	35.645 \| good	0.756 \| good	10.958 \| good	0.297 \| good
2026-08-14T03:00:00.000Z	52 \| moderate	10.089 \| good	44.506 \| good	31.007 \| good	0.79 \| good	12.082 \| good	0.306 \| good
2026-08-14T04:00:00.000Z	56 \| moderate	11.682 \| good	51.912 \| good	29.137 \| good	0.804 \| good	12.234 \| good	0.311 \| good
2026-08-14T05:00:00.000Z	56 \| moderate	11.636 \| good	51.267 \| good	22.209 \| good	0.8 \| good	11.234 \| good	0.309 \| good
2026-08-14T06:00:00.000Z	56 \| moderate	12.124 \| fine	53.466 \| good	15.97 \| good	0.809 \| good	9.628 \| good	0.299 \| good
2026-08-14T07:00:00.000Z	49 \| good	9.218 \| good	41.07 \| good	11.846 \| good	0.824 \| good	8.364 \| good	0.289 \| good
2026-08-14T08:00:00.000Z	52 \| moderate	9.554 \| good	42.876 \| good	7.616 \| good	0.833 \| good	7.434 \| good	0.281 \| good
2026-08-14T09:00:00.000Z	52 \| moderate	10.342 \| good	45.677 \| good	4.988 \| good	0.85 \| good	6.888 \| good	0.278 \| good
2026-08-14T10:00:00.000Z	52 \| moderate	10.166 \| good	45.291 \| good	5.44 \| good	0.873 \| good	7.019 \| good	0.279 \| good
2026-08-14T11:00:00.000Z	52 \| moderate	9.536 \| good	42.409 \| good	8.022 \| good	0.9 \| good	7.182 \| good	0.279 \| good
2026-08-14T12:00:00.000Z	44 \| good	7.83 \| good	34.171 \| good	16.246 \| good	0.948 \| good	6.993 \| good	0.284 \| good
2026-08-14T13:00:00.000Z	38 \| good	6.861 \| good	30.608 \| good	26.028 \| good	1.063 \| good	5.407 \| good	0.28 \| good
2026-08-14T14:00:00.000Z	38 \| good	7.108 \| good	31.452 \| good	34.413 \| good	1.069 \| good	3.989 \| good	0.273 \| good
2026-08-14T15:00:00.000Z	44 \| good	8.256 \| good	36.282 \| good	41.402 \| good	0.983 \| good	2.702 \| good	0.263 \| good
2026-08-14T16:00:00.000Z	49 \| good	9.021 \| good	39.712 \| good	45.749 \| good	0.972 \| good	2.295 \| good	0.261 \| good
2026-08-14T17:00:00.000Z	49 \| good	9.017 \| good	40.709 \| good	48.939 \| good	0.959 \| good	1.968 \| good	0.259 \| good
2026-08-14T18:00:00.000Z	49 \| good	8.527 \| good	37.249 \| good	51.058 \| good	0.901 \| good	2.013 \| good	0.255 \| good
2026-08-14T19:00:00.000Z	52 \| moderate	9.976 \| good	44.216 \| good	52.355 \| good	0.822 \| good	2.144 \| good	0.253 \| good
2026-08-14T20:00:00.000Z	52 \| moderate	9.786 \| good	43.346 \| good	51.192 \| good	0.853 \| good	2.231 \| good	0.253 \| good
2026-08-14T21:00:00.000Z	45 \| good	6.932 \| good	30.626 \| good	49.236 \| good	0.895 \| good	2.621 \| good	0.255 \| good
2026-08-14T22:00:00.000Z	44 \| good	7.19 \| good	31.998 \| good	47.717 \| good	0.937 \| good	3.205 \| good	0.258 \| good
2026-08-14T23:00:00.000Z	52 \| moderate	9.747 \| good	43.436 \| good	40.149 \| good	0.981 \| good	4.119 \| good	0.263 \| good
2026-08-15T00:00:00.000Z	49 \| good	9.197 \| good	41.168 \| good	29.027 \| good	1.034 \| good	6.257 \| good	0.278 \| good
2026-08-15T01:00:00.000Z	52 \| moderate	10.123 \| good	45.039 \| good	25.019 \| good	1.081 \| good	10.37 \| good	0.307 \| good
2026-08-15T02:00:00.000Z	52 \| moderate	10.396 \| good	45.975 \| good	21.151 \| good	1.138 \| good	12.612 \| good	0.321 \| good
2026-08-15T03:00:00.000Z	52 \| moderate	9.883 \| good	43.78 \| good	19.468 \| good	1.181 \| good	14.524 \| good	0.332 \| good
2026-08-15T04:00:00.000Z	56 \| moderate	12.2 \| fine	54.145 \| good	17.09 \| good	1.198 \| good	17.811 \| good	0.354 \| good
2026-08-15T05:00:00.000Z	58 \| moderate	13.274 \| fine	59.603 \| fine	15.821 \| good	1.185 \| good	19.932 \| good	0.374 \| good
2026-08-15T06:00:00.000Z	92 \| moderate	31.225 \| fine	31.585 \| good	22.565 \| good	1.185 \| good	20.946 \| good	0.384 \| good
2026-08-15T07:00:00.000Z	56 \| moderate	11.705 \| good	52.638 \| good	9.617 \| good	1.175 \| good	21.231 \| good	0.387 \| good
2026-08-15T08:00:00.000Z	49 \| good	8.995 \| good	39.95 \| good	8.591 \| good	1.193 \| good	17.862 \| good	0.369 \| good
2026-08-15T09:00:00.000Z	27 \| good	5.2 \| good	22.67 \| good	6.662 \| good	1.261 \| good	12.472 \| good	0.333 \| good
2026-08-15T10:00:00.000Z	38 \| good	7.434 \| good	32.748 \| good	7.794 \| good	1.266 \| good	8.296 \| good	0.294 \| good
2026-08-15T11:00:00.000Z	38 \| good	6.807 \| good	29.874 \| good	8.521 \| good	1.084 \| good	5.955 \| good	0.247 \| good
2026-08-15T12:00:00.000Z	38 \| good	6.806 \| good	6.834 \| good	27.989 \| good	0.861 \| good	4.565 \| good	0.211 \| good

Real-time air quality index in Catonsville, Maryland today

Common air pollutants in Catonsville, Maryland

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Catonsville, Maryland air quality forecast and history

Empower business decisions with accurate air quality data

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

Air quality in nearby cities

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Ellicott City, Maryland

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Milford Mill, 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 Catonsville, Maryland updated?

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

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

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

Which pollutant is found most often in Catonsville, Maryland?

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

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

What are the current PM10 levels at Catonsville, Maryland?

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

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

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

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

What are the current PM₁₀ levels at Catonsville, Maryland?

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

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

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