What are the current PM10 levels at Catonsville, Maryland?

The current PM10 levels in Catonsville, Maryland are 78.964 μg/m3.

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

The current sulfur dioxide (SO2) levels in Catonsville, Maryland are 0.286 ppb.

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

The current ozone (O3) levels at Catonsville, Maryland is 55.827 ppm.

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

The current nitrogen dioxide (NO2) levels at Catonsville, Maryland is 6.316 ppb.

Live air quality index in Catonsville, Maryland today

Name: Live air pollution levels in Catonsville, Maryland today
Creator: Ambee

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)

Major air pollutants in Catonsville, Maryland

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

18.84 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

78.96 μg/m³

155

255

425

605+

Ozone (O₃)

55.83 ppb

201

201+

Sulfur Dioxide (SO₂)

0.29 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.32 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.23 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
2025-06-04T07:00:00.000Z	44 \| good	8.169 \| good	35.323 \| good	26.449 \| good	0.317 \| good	16.297 \| good	0.226 \| good
2025-06-04T08:00:00.000Z	44 \| good	8.239 \| good	33.83 \| good	21.018 \| good	0.324 \| good	16.954 \| good	0.199 \| good
2025-06-04T09:00:00.000Z	44 \| good	7.847 \| good	33.171 \| good	17.441 \| good	0.305 \| good	17.054 \| good	0.24 \| good
2025-06-04T10:00:00.000Z	44 \| good	8.404 \| good	36.35 \| good	16.412 \| good	0.35 \| good	15.921 \| good	0.191 \| good
2025-06-04T11:00:00.000Z	49 \| good	9.288 \| good	40.545 \| good	13.204 \| good	0.298 \| good	16.522 \| good	0.315 \| good
2025-06-04T12:00:00.000Z	52 \| moderate	10.429 \| good	44.894 \| good	13.386 \| good	0.408 \| good	15.277 \| good	0.431 \| good
2025-06-04T13:00:00.000Z	52 \| moderate	10.125 \| good	44.748 \| good	34.734 \| good	2.74 \| good	2.447 \| good	0.247 \| good
2025-06-04T14:00:00.000Z	54 \| moderate	11.25 \| good	49.092 \| good	29.211 \| good	0.397 \| good	13.268 \| good	0.308 \| good
2025-06-04T15:00:00.000Z	58 \| moderate	12.708 \| fine	55.693 \| fine	36.646 \| good	0.346 \| good	11.371 \| good	0.267 \| good
2025-06-04T16:00:00.000Z	56 \| moderate	12.378 \| fine	54.207 \| good	46.891 \| good	0.36 \| good	8.951 \| good	0.267 \| good
2025-06-04T17:00:00.000Z	60 \| moderate	13.704 \| fine	51.156 \| good	52.24 \| good	0.276 \| good	7.722 \| good	0.267 \| good
2025-06-04T18:00:00.000Z	60 \| moderate	13.957 \| fine	54.444 \| good	57.433 \| fine	0.215 \| good	5.362 \| good	0.259 \| good
2025-06-04T19:00:00.000Z	64 \| moderate	13.991 \| fine	62.339 \| fine	58.712 \| fine	0.201 \| good	4.321 \| good	0.259 \| good
2025-06-04T20:00:00.000Z	67 \| moderate	14.991 \| fine	57.928 \| fine	60.278 \| fine	0.222 \| good	4.312 \| good	0.267 \| good
2025-06-04T21:00:00.000Z	67 \| moderate	15.033 \| fine	62.433 \| fine	59.923 \| fine	0.249 \| good	4.322 \| good	0.24 \| good
2025-06-04T22:00:00.000Z	64 \| moderate	14.934 \| fine	60.648 \| fine	58.895 \| fine	0.226 \| good	4.938 \| good	0.24 \| good
2025-06-04T23:00:00.000Z	60 \| moderate	14.338 \| fine	60.3 \| fine	53.734 \| good	0.199 \| good	6.781 \| good	0.24 \| good
2025-06-05T00:00:00.000Z	58 \| moderate	12.99 \| fine	52.89 \| good	53.741 \| good	0.19 \| good	5.832 \| good	0.316 \| good
2025-06-05T01:00:00.000Z	58 \| moderate	13.317 \| fine	49.048 \| good	48.856 \| good	0.206 \| good	7.527 \| good	0.325 \| good
2025-06-05T02:00:00.000Z	58 \| moderate	13.353 \| fine	65.594 \| fine	46.03 \| good	0.189 \| good	7.806 \| good	0.325 \| good
2025-06-05T03:00:00.000Z	58 \| moderate	13.16 \| fine	59.752 \| fine	40.678 \| good	0.177 \| good	7.911 \| good	0.325 \| good
2025-06-05T04:00:00.000Z	58 \| moderate	13.337 \| fine	57.181 \| fine	38.415 \| good	0.169 \| good	10.344 \| good	0.276 \| good
2025-06-05T05:00:00.000Z	58 \| moderate	13.338 \| fine	61.525 \| fine	34.711 \| good	0.194 \| good	10.9 \| good	0.292 \| good
2025-06-05T06:00:00.000Z	60 \| moderate	14.45 \| fine	67.472 \| fine	31.899 \| good	0.185 \| good	10.774 \| good	0.226 \| good
2025-06-05T07:00:00.000Z	60 \| moderate	13.703 \| fine	54.162 \| good	29.526 \| good	0.181 \| good	12.027 \| good	0.267 \| good
2025-06-05T08:00:00.000Z	58 \| moderate	12.683 \| fine	49.395 \| good	25.265 \| good	0.308 \| good	12.314 \| good	0.267 \| good
2025-06-05T09:00:00.000Z	58 \| moderate	12.926 \| fine	56.99 \| fine	23.254 \| good	0.274 \| good	12.619 \| good	0.276 \| good
2025-06-05T10:00:00.000Z	58 \| moderate	12.894 \| fine	55.019 \| fine	21.393 \| good	0.167 \| good	12.349 \| good	0.316 \| good
2025-06-05T11:00:00.000Z	58 \| moderate	12.81 \| fine	59.35 \| fine	22.601 \| good	0.31 \| good	12.933 \| good	0.259 \| good
2025-06-05T12:00:00.000Z	58 \| moderate	13.139 \| fine	53.22 \| good	21.944 \| good	0.332 \| good	12.427 \| good	0.406 \| good
2025-06-05T13:00:00.000Z	56 \| moderate	12.491 \| fine	53.02 \| good	28.682 \| good	0.283 \| good	10.719 \| good	0.259 \| good
2025-06-05T14:00:00.000Z	60 \| moderate	13.888 \| fine	63.343 \| fine	30.482 \| good	0.233 \| good	11.231 \| good	0.259 \| good
2025-06-05T15:00:00.000Z	60 \| moderate	13.561 \| fine	58.315 \| fine	32.78 \| good	0.356 \| good	9.358 \| good	0.259 \| good
2025-06-05T16:00:00.000Z	60 \| moderate	14.41 \| fine	61.856 \| fine	40.779 \| good	0.687 \| good	7.382 \| good	0.259 \| good
2025-06-05T17:00:00.000Z	60 \| moderate	14.362 \| fine	63.742 \| fine	49.477 \| good	0.604 \| good	5.501 \| good	0.259 \| good
2025-06-05T18:00:00.000Z	62 \| moderate	15.407 \| fine	64.407 \| fine	54.735 \| good	0.359 \| good	4.782 \| good	0.232 \| good
2025-06-05T19:00:00.000Z	64 \| moderate	16.419 \| fine	73.528 \| fine	54.949 \| good	0.265 \| good	4.366 \| good	0.232 \| good
2025-06-05T20:00:00.000Z	64 \| moderate	15.818 \| fine	68.371 \| fine	56.484 \| fine	0.222 \| good	3.972 \| good	0.183 \| good
2025-06-05T21:00:00.000Z	64 \| moderate	16.462 \| fine	65.928 \| fine	57.073 \| fine	0.247 \| good	4.483 \| good	0.259 \| good
2025-06-05T22:00:00.000Z	66 \| moderate	16.503 \| fine	68.421 \| fine	50.117 \| good	0.231 \| good	4.637 \| good	0.24 \| good
2025-06-05T23:00:00.000Z	62 \| moderate	15.357 \| fine	66.446 \| fine	48.185 \| good	0.659 \| good	4.303 \| good	0.24 \| good
2025-06-06T00:00:00.000Z	60 \| moderate	13.96 \| fine	63.678 \| fine	44.407 \| good	0.28 \| good	4.681 \| good	0.24 \| good
2025-06-06T01:00:00.000Z	55 \| moderate	11.032 \| good	62.585 \| fine	41.1 \| good	0.263 \| good	7.647 \| good	0.24 \| good
2025-06-06T02:00:00.000Z	54 \| moderate	11.16 \| good	48.976 \| good	40.518 \| good	0.174 \| good	6.961 \| good	0.249 \| good
2025-06-06T03:00:00.000Z	54 \| moderate	10.842 \| good	42.931 \| good	36.644 \| good	0.208 \| good	6.97 \| good	0.284 \| good
2025-06-06T04:00:00.000Z	52 \| moderate	10.374 \| good	43.73 \| good	32.733 \| good	0.173 \| good	7.818 \| good	0.235 \| good
2025-06-06T05:00:00.000Z	52 \| moderate	10.017 \| good	44.058 \| good	26.78 \| good	0.174 \| good	12.34 \| good	0.284 \| good
2025-06-06T06:00:00.000Z	54 \| moderate	11.02 \| good	44.473 \| good	21.945 \| good	0.143 \| good	10.69 \| good	0.235 \| good
2025-06-05T20:00:00.000Z	69 \| moderate	18.837 \| fine	78.964 \| fine	55.827 \| fine	0.286 \| good	6.316 \| good	0.234 \| good
2025-06-05T21:00:00.000Z	100 \| moderate	14.497 \| fine	65.132 \| fine	70.042 \| fine	2.002 \| good	2.097 \| good	0.195 \| good
2025-06-05T22:00:00.000Z	67 \| moderate	13.264 \| fine	59.237 \| fine	60.006 \| fine	1.62 \| good	6.266 \| good	0.229 \| good
2025-06-05T23:00:00.000Z	58 \| moderate	12.592 \| fine	56.352 \| fine	53.586 \| good	1.76 \| good	6.385 \| good	0.226 \| good
2025-06-06T00:00:00.000Z	58 \| moderate	12.848 \| fine	57.689 \| fine	48.982 \| good	1.9 \| good	6.505 \| good	0.223 \| good
2025-06-06T01:00:00.000Z	58 \| moderate	12.735 \| fine	56.923 \| fine	40.613 \| good	1.623 \| good	7.256 \| good	0.222 \| good
2025-06-06T02:00:00.000Z	54 \| moderate	11.107 \| good	49.402 \| good	37.5 \| good	1.695 \| good	7.662 \| good	0.223 \| good
2025-06-06T03:00:00.000Z	52 \| moderate	10.274 \| good	45.368 \| good	36.835 \| good	1.767 \| good	8.068 \| good	0.225 \| good
2025-06-06T04:00:00.000Z	52 \| moderate	9.802 \| good	43.589 \| good	33.735 \| good	1.218 \| good	5.167 \| good	0.186 \| good
2025-06-06T05:00:00.000Z	52 \| moderate	10.156 \| good	45.222 \| good	32.298 \| good	1.329 \| good	5.515 \| good	0.188 \| good
2025-06-06T06:00:00.000Z	44 \| good	7.982 \| good	34.791 \| good	28.795 \| good	1.44 \| good	5.863 \| good	0.189 \| good
2025-06-06T07:00:00.000Z	38 \| good	7.482 \| good	32.872 \| good	24.526 \| good	1.197 \| good	5.274 \| good	0.172 \| good
2025-06-06T08:00:00.000Z	44 \| good	8.265 \| good	36.171 \| good	20.739 \| good	1.255 \| good	5.594 \| good	0.174 \| good
2025-06-06T09:00:00.000Z	49 \| good	8.926 \| good	39.536 \| good	18.352 \| good	1.314 \| good	5.914 \| good	0.175 \| good
2025-06-06T10:00:00.000Z	56 \| moderate	11.856 \| good	53.407 \| good	14.833 \| good	1.532 \| good	4.621 \| good	0.183 \| good
2025-06-06T11:00:00.000Z	54 \| moderate	10.834 \| good	47.702 \| good	21.426 \| good	1.547 \| good	4.798 \| good	0.183 \| good
2025-06-06T12:00:00.000Z	54 \| moderate	11.265 \| good	49.585 \| good	27.425 \| good	1.562 \| good	4.974 \| good	0.183 \| good
2025-06-06T13:00:00.000Z	52 \| moderate	10.279 \| good	45.508 \| good	34.587 \| good	1.286 \| good	2.26 \| good	0.148 \| good
2025-06-06T14:00:00.000Z	54 \| moderate	11.228 \| good	49.655 \| good	42.491 \| good	1.403 \| good	2.209 \| good	0.148 \| good
2025-06-06T15:00:00.000Z	54 \| moderate	10.764 \| good	47.797 \| good	48.302 \| good	1.52 \| good	2.158 \| good	0.148 \| good
2025-06-06T16:00:00.000Z	54 \| moderate	10.878 \| good	47.991 \| good	50.276 \| good	0.615 \| good	1.5 \| good	0.133 \| good
2025-06-06T17:00:00.000Z	52 \| moderate	9.583 \| good	43.053 \| good	51.216 \| good	0.712 \| good	1.461 \| good	0.133 \| good
2025-06-06T18:00:00.000Z	46 \| good	7.612 \| good	33.52 \| good	49.792 \| good	0.81 \| good	1.423 \| good	0.133 \| good
2025-06-06T19:00:00.000Z	45 \| good	7.522 \| good	33.082 \| good	48.941 \| good	0.681 \| good	1.968 \| good	0.135 \| good
2025-06-06T20:00:00.000Z	45 \| good	7.356 \| good	32.462 \| good	49.424 \| good	0.798 \| good	2.064 \| good	0.135 \| good
2025-06-06T21:00:00.000Z	46 \| good	8.069 \| good	35.52 \| good	50.306 \| good	0.915 \| good	2.161 \| good	0.135 \| good
2025-06-06T22:00:00.000Z	46 \| good	8.09 \| good	35.384 \| good	49.828 \| good	1.331 \| good	6.155 \| good	0.173 \| good
2025-06-06T23:00:00.000Z	43 \| good	7.186 \| good	31.91 \| good	45.641 \| good	1.519 \| good	5.936 \| good	0.166 \| good
2025-06-07T00:00:00.000Z	34 \| good	6.388 \| good	28.597 \| good	36.569 \| good	1.707 \| good	5.717 \| good	0.159 \| good
2025-06-07T01:00:00.000Z	38 \| good	7.34 \| good	32.232 \| good	27.532 \| good	1.243 \| good	16.225 \| good	0.261 \| good
2025-06-07T02:00:00.000Z	38 \| good	7.136 \| good	31.697 \| good	22.551 \| good	1.438 \| good	16.175 \| good	0.25 \| good
2025-06-07T03:00:00.000Z	49 \| good	8.627 \| good	37.774 \| good	18.737 \| good	1.634 \| good	16.125 \| good	0.239 \| good
2025-06-07T04:00:00.000Z	44 \| good	8.25 \| good	36.228 \| good	15.762 \| good	1.298 \| good	17.938 \| good	0.292 \| good
2025-06-07T05:00:00.000Z	52 \| moderate	10.036 \| good	44.766 \| good	16.607 \| good	1.404 \| good	17.708 \| good	0.277 \| good
2025-06-07T06:00:00.000Z	49 \| good	9.227 \| good	41.378 \| good	18.353 \| good	1.511 \| good	17.478 \| good	0.261 \| good
2025-06-07T07:00:00.000Z	49 \| good	9.243 \| good	41.271 \| good	18.637 \| good	1.259 \| good	8.097 \| good	0.24 \| good
2025-06-07T08:00:00.000Z	52 \| moderate	9.509 \| good	42.542 \| good	18.617 \| good	1.357 \| good	9.069 \| good	0.235 \| good
2025-06-07T09:00:00.000Z	49 \| good	8.697 \| good	38.138 \| good	6.87 \| good	1.455 \| good	10.042 \| good	0.23 \| good
2025-06-07T10:00:00.000Z	49 \| good	9.481 \| good	42.245 \| good	10.44 \| good	1.327 \| good	7.808 \| good	0.258 \| good
2025-06-07T11:00:00.000Z	38 \| good	7.235 \| good	32.041 \| good	17.065 \| good	1.412 \| good	8.781 \| good	0.259 \| good
2025-06-07T12:00:00.000Z	44 \| good	7.963 \| good	34.733 \| good	18.982 \| good	1.497 \| good	9.754 \| good	0.259 \| good
2025-06-07T13:00:00.000Z	52 \| moderate	9.602 \| good	42.662 \| good	21.826 \| good	1.922 \| good	4.278 \| good	0.249 \| good
2025-06-07T14:00:00.000Z	49 \| good	8.532 \| good	37.063 \| good	31.25 \| good	2.152 \| good	5.243 \| good	0.255 \| good
2025-06-07T15:00:00.000Z	39 \| good	6.553 \| good	28.926 \| good	41.836 \| good	2.381 \| good	6.207 \| good	0.26 \| good
2025-06-07T16:00:00.000Z	44 \| good	7.412 \| good	32.623 \| good	47.101 \| good	1.55 \| good	1.416 \| good	0.238 \| good
2025-06-07T17:00:00.000Z	46 \| good	6.89 \| good	30.644 \| good	50.25 \| good	1.918 \| good	1.696 \| good	0.242 \| good
2025-06-07T18:00:00.000Z	45 \| good	7.718 \| good	34.131 \| good	48.508 \| good	2.287 \| good	1.976 \| good	0.245 \| good
2025-06-07T19:00:00.000Z	52 \| moderate	9.81 \| good	43.278 \| good	50.656 \| good	0.674 \| good	1.87 \| good	0.228 \| good
2025-06-07T20:00:00.000Z	54 \| moderate	11.47 \| good	50.911 \| good	49.824 \| good	0.889 \| good	2.163 \| good	0.23 \| 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 10:00:00 on 2025-06-04.

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

The best air quality in Catonsville, Maryland was recorded at 01:00:00 on 2025-06-05.

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

The real-time air quality index in Catonsville, Maryland is 69, 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 18.837 μg/m³.

What are the current PM₁₀ levels at Catonsville, Maryland?

The current PM₁₀ levels in Catonsville, Maryland are 78.964 μg/m³.

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

The current carbon monoxide (CO) level in Catonsville, Maryland is 0.234 ppm.

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

The current sulfur dioxide (SO₂) levels in Catonsville, Maryland are 0.286 ppb.

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

The current ozone (O₃) levels at Catonsville, Maryland is 55.827 ppm.

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

The current nitrogen dioxide (NO₂) levels at Catonsville, Maryland is 6.316 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-04T07:00:00.000Z	44 \| good	8.169 \| good	35.323 \| good	26.449 \| good	0.317 \| good	16.297 \| good	0.226 \| good
2025-06-04T08:00:00.000Z	44 \| good	8.239 \| good	33.83 \| good	21.018 \| good	0.324 \| good	16.954 \| good	0.199 \| good
2025-06-04T09:00:00.000Z	44 \| good	7.847 \| good	33.171 \| good	17.441 \| good	0.305 \| good	17.054 \| good	0.24 \| good
2025-06-04T10:00:00.000Z	44 \| good	8.404 \| good	36.35 \| good	16.412 \| good	0.35 \| good	15.921 \| good	0.191 \| good
2025-06-04T11:00:00.000Z	49 \| good	9.288 \| good	40.545 \| good	13.204 \| good	0.298 \| good	16.522 \| good	0.315 \| good
2025-06-04T12:00:00.000Z	52 \| moderate	10.429 \| good	44.894 \| good	13.386 \| good	0.408 \| good	15.277 \| good	0.431 \| good
2025-06-04T13:00:00.000Z	52 \| moderate	10.125 \| good	44.748 \| good	34.734 \| good	2.74 \| good	2.447 \| good	0.247 \| good
2025-06-04T14:00:00.000Z	54 \| moderate	11.25 \| good	49.092 \| good	29.211 \| good	0.397 \| good	13.268 \| good	0.308 \| good
2025-06-04T15:00:00.000Z	58 \| moderate	12.708 \| fine	55.693 \| fine	36.646 \| good	0.346 \| good	11.371 \| good	0.267 \| good
2025-06-04T16:00:00.000Z	56 \| moderate	12.378 \| fine	54.207 \| good	46.891 \| good	0.36 \| good	8.951 \| good	0.267 \| good
2025-06-04T17:00:00.000Z	60 \| moderate	13.704 \| fine	51.156 \| good	52.24 \| good	0.276 \| good	7.722 \| good	0.267 \| good
2025-06-04T18:00:00.000Z	60 \| moderate	13.957 \| fine	54.444 \| good	57.433 \| fine	0.215 \| good	5.362 \| good	0.259 \| good
2025-06-04T19:00:00.000Z	64 \| moderate	13.991 \| fine	62.339 \| fine	58.712 \| fine	0.201 \| good	4.321 \| good	0.259 \| good
2025-06-04T20:00:00.000Z	67 \| moderate	14.991 \| fine	57.928 \| fine	60.278 \| fine	0.222 \| good	4.312 \| good	0.267 \| good
2025-06-04T21:00:00.000Z	67 \| moderate	15.033 \| fine	62.433 \| fine	59.923 \| fine	0.249 \| good	4.322 \| good	0.24 \| good
2025-06-04T22:00:00.000Z	64 \| moderate	14.934 \| fine	60.648 \| fine	58.895 \| fine	0.226 \| good	4.938 \| good	0.24 \| good
2025-06-04T23:00:00.000Z	60 \| moderate	14.338 \| fine	60.3 \| fine	53.734 \| good	0.199 \| good	6.781 \| good	0.24 \| good
2025-06-05T00:00:00.000Z	58 \| moderate	12.99 \| fine	52.89 \| good	53.741 \| good	0.19 \| good	5.832 \| good	0.316 \| good
2025-06-05T01:00:00.000Z	58 \| moderate	13.317 \| fine	49.048 \| good	48.856 \| good	0.206 \| good	7.527 \| good	0.325 \| good
2025-06-05T02:00:00.000Z	58 \| moderate	13.353 \| fine	65.594 \| fine	46.03 \| good	0.189 \| good	7.806 \| good	0.325 \| good
2025-06-05T03:00:00.000Z	58 \| moderate	13.16 \| fine	59.752 \| fine	40.678 \| good	0.177 \| good	7.911 \| good	0.325 \| good
2025-06-05T04:00:00.000Z	58 \| moderate	13.337 \| fine	57.181 \| fine	38.415 \| good	0.169 \| good	10.344 \| good	0.276 \| good
2025-06-05T05:00:00.000Z	58 \| moderate	13.338 \| fine	61.525 \| fine	34.711 \| good	0.194 \| good	10.9 \| good	0.292 \| good
2025-06-05T06:00:00.000Z	60 \| moderate	14.45 \| fine	67.472 \| fine	31.899 \| good	0.185 \| good	10.774 \| good	0.226 \| good
2025-06-05T07:00:00.000Z	60 \| moderate	13.703 \| fine	54.162 \| good	29.526 \| good	0.181 \| good	12.027 \| good	0.267 \| good
2025-06-05T08:00:00.000Z	58 \| moderate	12.683 \| fine	49.395 \| good	25.265 \| good	0.308 \| good	12.314 \| good	0.267 \| good
2025-06-05T09:00:00.000Z	58 \| moderate	12.926 \| fine	56.99 \| fine	23.254 \| good	0.274 \| good	12.619 \| good	0.276 \| good
2025-06-05T10:00:00.000Z	58 \| moderate	12.894 \| fine	55.019 \| fine	21.393 \| good	0.167 \| good	12.349 \| good	0.316 \| good
2025-06-05T11:00:00.000Z	58 \| moderate	12.81 \| fine	59.35 \| fine	22.601 \| good	0.31 \| good	12.933 \| good	0.259 \| good
2025-06-05T12:00:00.000Z	58 \| moderate	13.139 \| fine	53.22 \| good	21.944 \| good	0.332 \| good	12.427 \| good	0.406 \| good
2025-06-05T13:00:00.000Z	56 \| moderate	12.491 \| fine	53.02 \| good	28.682 \| good	0.283 \| good	10.719 \| good	0.259 \| good
2025-06-05T14:00:00.000Z	60 \| moderate	13.888 \| fine	63.343 \| fine	30.482 \| good	0.233 \| good	11.231 \| good	0.259 \| good
2025-06-05T15:00:00.000Z	60 \| moderate	13.561 \| fine	58.315 \| fine	32.78 \| good	0.356 \| good	9.358 \| good	0.259 \| good
2025-06-05T16:00:00.000Z	60 \| moderate	14.41 \| fine	61.856 \| fine	40.779 \| good	0.687 \| good	7.382 \| good	0.259 \| good
2025-06-05T17:00:00.000Z	60 \| moderate	14.362 \| fine	63.742 \| fine	49.477 \| good	0.604 \| good	5.501 \| good	0.259 \| good
2025-06-05T18:00:00.000Z	62 \| moderate	15.407 \| fine	64.407 \| fine	54.735 \| good	0.359 \| good	4.782 \| good	0.232 \| good
2025-06-05T19:00:00.000Z	64 \| moderate	16.419 \| fine	73.528 \| fine	54.949 \| good	0.265 \| good	4.366 \| good	0.232 \| good
2025-06-05T20:00:00.000Z	64 \| moderate	15.818 \| fine	68.371 \| fine	56.484 \| fine	0.222 \| good	3.972 \| good	0.183 \| good
2025-06-05T21:00:00.000Z	64 \| moderate	16.462 \| fine	65.928 \| fine	57.073 \| fine	0.247 \| good	4.483 \| good	0.259 \| good
2025-06-05T22:00:00.000Z	66 \| moderate	16.503 \| fine	68.421 \| fine	50.117 \| good	0.231 \| good	4.637 \| good	0.24 \| good
2025-06-05T23:00:00.000Z	62 \| moderate	15.357 \| fine	66.446 \| fine	48.185 \| good	0.659 \| good	4.303 \| good	0.24 \| good
2025-06-06T00:00:00.000Z	60 \| moderate	13.96 \| fine	63.678 \| fine	44.407 \| good	0.28 \| good	4.681 \| good	0.24 \| good
2025-06-06T01:00:00.000Z	55 \| moderate	11.032 \| good	62.585 \| fine	41.1 \| good	0.263 \| good	7.647 \| good	0.24 \| good
2025-06-06T02:00:00.000Z	54 \| moderate	11.16 \| good	48.976 \| good	40.518 \| good	0.174 \| good	6.961 \| good	0.249 \| good
2025-06-06T03:00:00.000Z	54 \| moderate	10.842 \| good	42.931 \| good	36.644 \| good	0.208 \| good	6.97 \| good	0.284 \| good
2025-06-06T04:00:00.000Z	52 \| moderate	10.374 \| good	43.73 \| good	32.733 \| good	0.173 \| good	7.818 \| good	0.235 \| good
2025-06-06T05:00:00.000Z	52 \| moderate	10.017 \| good	44.058 \| good	26.78 \| good	0.174 \| good	12.34 \| good	0.284 \| good
2025-06-06T06:00:00.000Z	54 \| moderate	11.02 \| good	44.473 \| good	21.945 \| good	0.143 \| good	10.69 \| good	0.235 \| good
2025-06-05T20:00:00.000Z	69 \| moderate	18.837 \| fine	78.964 \| fine	55.827 \| fine	0.286 \| good	6.316 \| good	0.234 \| good
2025-06-05T21:00:00.000Z	100 \| moderate	14.497 \| fine	65.132 \| fine	70.042 \| fine	2.002 \| good	2.097 \| good	0.195 \| good
2025-06-05T22:00:00.000Z	67 \| moderate	13.264 \| fine	59.237 \| fine	60.006 \| fine	1.62 \| good	6.266 \| good	0.229 \| good
2025-06-05T23:00:00.000Z	58 \| moderate	12.592 \| fine	56.352 \| fine	53.586 \| good	1.76 \| good	6.385 \| good	0.226 \| good
2025-06-06T00:00:00.000Z	58 \| moderate	12.848 \| fine	57.689 \| fine	48.982 \| good	1.9 \| good	6.505 \| good	0.223 \| good
2025-06-06T01:00:00.000Z	58 \| moderate	12.735 \| fine	56.923 \| fine	40.613 \| good	1.623 \| good	7.256 \| good	0.222 \| good
2025-06-06T02:00:00.000Z	54 \| moderate	11.107 \| good	49.402 \| good	37.5 \| good	1.695 \| good	7.662 \| good	0.223 \| good
2025-06-06T03:00:00.000Z	52 \| moderate	10.274 \| good	45.368 \| good	36.835 \| good	1.767 \| good	8.068 \| good	0.225 \| good
2025-06-06T04:00:00.000Z	52 \| moderate	9.802 \| good	43.589 \| good	33.735 \| good	1.218 \| good	5.167 \| good	0.186 \| good
2025-06-06T05:00:00.000Z	52 \| moderate	10.156 \| good	45.222 \| good	32.298 \| good	1.329 \| good	5.515 \| good	0.188 \| good
2025-06-06T06:00:00.000Z	44 \| good	7.982 \| good	34.791 \| good	28.795 \| good	1.44 \| good	5.863 \| good	0.189 \| good
2025-06-06T07:00:00.000Z	38 \| good	7.482 \| good	32.872 \| good	24.526 \| good	1.197 \| good	5.274 \| good	0.172 \| good
2025-06-06T08:00:00.000Z	44 \| good	8.265 \| good	36.171 \| good	20.739 \| good	1.255 \| good	5.594 \| good	0.174 \| good
2025-06-06T09:00:00.000Z	49 \| good	8.926 \| good	39.536 \| good	18.352 \| good	1.314 \| good	5.914 \| good	0.175 \| good
2025-06-06T10:00:00.000Z	56 \| moderate	11.856 \| good	53.407 \| good	14.833 \| good	1.532 \| good	4.621 \| good	0.183 \| good
2025-06-06T11:00:00.000Z	54 \| moderate	10.834 \| good	47.702 \| good	21.426 \| good	1.547 \| good	4.798 \| good	0.183 \| good
2025-06-06T12:00:00.000Z	54 \| moderate	11.265 \| good	49.585 \| good	27.425 \| good	1.562 \| good	4.974 \| good	0.183 \| good
2025-06-06T13:00:00.000Z	52 \| moderate	10.279 \| good	45.508 \| good	34.587 \| good	1.286 \| good	2.26 \| good	0.148 \| good
2025-06-06T14:00:00.000Z	54 \| moderate	11.228 \| good	49.655 \| good	42.491 \| good	1.403 \| good	2.209 \| good	0.148 \| good
2025-06-06T15:00:00.000Z	54 \| moderate	10.764 \| good	47.797 \| good	48.302 \| good	1.52 \| good	2.158 \| good	0.148 \| good
2025-06-06T16:00:00.000Z	54 \| moderate	10.878 \| good	47.991 \| good	50.276 \| good	0.615 \| good	1.5 \| good	0.133 \| good
2025-06-06T17:00:00.000Z	52 \| moderate	9.583 \| good	43.053 \| good	51.216 \| good	0.712 \| good	1.461 \| good	0.133 \| good
2025-06-06T18:00:00.000Z	46 \| good	7.612 \| good	33.52 \| good	49.792 \| good	0.81 \| good	1.423 \| good	0.133 \| good
2025-06-06T19:00:00.000Z	45 \| good	7.522 \| good	33.082 \| good	48.941 \| good	0.681 \| good	1.968 \| good	0.135 \| good
2025-06-06T20:00:00.000Z	45 \| good	7.356 \| good	32.462 \| good	49.424 \| good	0.798 \| good	2.064 \| good	0.135 \| good
2025-06-06T21:00:00.000Z	46 \| good	8.069 \| good	35.52 \| good	50.306 \| good	0.915 \| good	2.161 \| good	0.135 \| good
2025-06-06T22:00:00.000Z	46 \| good	8.09 \| good	35.384 \| good	49.828 \| good	1.331 \| good	6.155 \| good	0.173 \| good
2025-06-06T23:00:00.000Z	43 \| good	7.186 \| good	31.91 \| good	45.641 \| good	1.519 \| good	5.936 \| good	0.166 \| good
2025-06-07T00:00:00.000Z	34 \| good	6.388 \| good	28.597 \| good	36.569 \| good	1.707 \| good	5.717 \| good	0.159 \| good
2025-06-07T01:00:00.000Z	38 \| good	7.34 \| good	32.232 \| good	27.532 \| good	1.243 \| good	16.225 \| good	0.261 \| good
2025-06-07T02:00:00.000Z	38 \| good	7.136 \| good	31.697 \| good	22.551 \| good	1.438 \| good	16.175 \| good	0.25 \| good
2025-06-07T03:00:00.000Z	49 \| good	8.627 \| good	37.774 \| good	18.737 \| good	1.634 \| good	16.125 \| good	0.239 \| good
2025-06-07T04:00:00.000Z	44 \| good	8.25 \| good	36.228 \| good	15.762 \| good	1.298 \| good	17.938 \| good	0.292 \| good
2025-06-07T05:00:00.000Z	52 \| moderate	10.036 \| good	44.766 \| good	16.607 \| good	1.404 \| good	17.708 \| good	0.277 \| good
2025-06-07T06:00:00.000Z	49 \| good	9.227 \| good	41.378 \| good	18.353 \| good	1.511 \| good	17.478 \| good	0.261 \| good
2025-06-07T07:00:00.000Z	49 \| good	9.243 \| good	41.271 \| good	18.637 \| good	1.259 \| good	8.097 \| good	0.24 \| good
2025-06-07T08:00:00.000Z	52 \| moderate	9.509 \| good	42.542 \| good	18.617 \| good	1.357 \| good	9.069 \| good	0.235 \| good
2025-06-07T09:00:00.000Z	49 \| good	8.697 \| good	38.138 \| good	6.87 \| good	1.455 \| good	10.042 \| good	0.23 \| good
2025-06-07T10:00:00.000Z	49 \| good	9.481 \| good	42.245 \| good	10.44 \| good	1.327 \| good	7.808 \| good	0.258 \| good
2025-06-07T11:00:00.000Z	38 \| good	7.235 \| good	32.041 \| good	17.065 \| good	1.412 \| good	8.781 \| good	0.259 \| good
2025-06-07T12:00:00.000Z	44 \| good	7.963 \| good	34.733 \| good	18.982 \| good	1.497 \| good	9.754 \| good	0.259 \| good
2025-06-07T13:00:00.000Z	52 \| moderate	9.602 \| good	42.662 \| good	21.826 \| good	1.922 \| good	4.278 \| good	0.249 \| good
2025-06-07T14:00:00.000Z	49 \| good	8.532 \| good	37.063 \| good	31.25 \| good	2.152 \| good	5.243 \| good	0.255 \| good
2025-06-07T15:00:00.000Z	39 \| good	6.553 \| good	28.926 \| good	41.836 \| good	2.381 \| good	6.207 \| good	0.26 \| good
2025-06-07T16:00:00.000Z	44 \| good	7.412 \| good	32.623 \| good	47.101 \| good	1.55 \| good	1.416 \| good	0.238 \| good
2025-06-07T17:00:00.000Z	46 \| good	6.89 \| good	30.644 \| good	50.25 \| good	1.918 \| good	1.696 \| good	0.242 \| good
2025-06-07T18:00:00.000Z	45 \| good	7.718 \| good	34.131 \| good	48.508 \| good	2.287 \| good	1.976 \| good	0.245 \| good
2025-06-07T19:00:00.000Z	52 \| moderate	9.81 \| good	43.278 \| good	50.656 \| good	0.674 \| good	1.87 \| good	0.228 \| good
2025-06-07T20:00:00.000Z	54 \| moderate	11.47 \| good	50.911 \| good	49.824 \| good	0.889 \| good	2.163 \| good	0.23 \| good

Live air quality index in Catonsville, Maryland today

Major 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

Ilchester, Maryland

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Elkridge, Maryland

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?