What is the current concentration of PM10 in Timonium, Maryland?

The current PM10 concentration at Timonium, Maryland is 4.785 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Timonium, Maryland?

The current sulfur dioxide (SO2) concentration at Timonium, Maryland is 0.271 ppb.

What is the current concentration of ozone (O3) in Timonium, Maryland?

The current ozone (O3) concentration at Timonium, Maryland is 45.077 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Timonium, Maryland?

The current nitrogen dioxide (NO2) concentration at Timonium, Maryland is 4.288 ppb.

Timonium, Maryland live air quality index now

Q: What is the current concentration of PM2.5 in Timonium, Maryland?

The current PM2.5 concentration at Timonium, Maryland is 1.159 μg/m3.

Stay updated with real-time air quality in Timonium, 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

Timonium, Maryland

Last updated: ... (Local time)

Major air pollutants in Timonium, Maryland

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

1.16 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

4.79 μg/m³

155

255

425

605+

Ozone (O₃)

45.08 ppb

201

201+

Sulfur Dioxide (SO₂)

0.27 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.29 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.25 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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Timonium, Maryland

Scroll To Air Quality Map

Track live Timonium, Maryland air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-08T00:00:00.000Z	52 \| moderate	9.623 \| good	41.347 \| good	20.039 \| good	0.291 \| good	9.969 \| good	0.291 \| good
2026-03-08T01:00:00.000Z	52 \| moderate	10.392 \| good	45.52 \| good	17.962 \| good	0.242 \| good	14.999 \| good	0.37 \| good
2026-03-08T02:00:00.000Z	54 \| moderate	11.144 \| good	48.36 \| good	15.811 \| good	0.23 \| good	16.147 \| good	0.407 \| good
2026-03-08T03:00:00.000Z	60 \| moderate	14.435 \| fine	64.684 \| fine	8.878 \| good	1.36 \| good	7.408 \| good	0.156 \| good
2026-03-08T04:00:00.000Z	49 \| good	9.384 \| good	40.135 \| good	12.483 \| good	0.273 \| good	11.675 \| good	0.358 \| good
2026-03-08T05:00:00.000Z	52 \| moderate	9.529 \| good	40.489 \| good	7.251 \| good	0.312 \| good	14.851 \| good	0.397 \| good
2026-03-08T06:00:00.000Z	54 \| moderate	11.097 \| good	48.152 \| good	7.519 \| good	0.253 \| good	15.949 \| good	0.49 \| good
2026-03-08T07:00:00.000Z	54 \| moderate	11.108 \| good	46.426 \| good	7.232 \| good	0.263 \| good	15.494 \| good	0.524 \| good
2026-03-08T08:00:00.000Z	54 \| moderate	11.073 \| good	46.495 \| good	6.38 \| good	0.293 \| good	15.173 \| good	0.462 \| good
2026-03-08T09:00:00.000Z	54 \| moderate	11.369 \| good	50.659 \| good	4.402 \| good	0.344 \| good	14.772 \| good	0.387 \| good
2026-03-08T10:00:00.000Z	52 \| moderate	10.035 \| good	44.17 \| good	4.42 \| good	0.391 \| good	14.851 \| good	0.352 \| good
2026-03-08T11:00:00.000Z	52 \| moderate	9.725 \| good	43.308 \| good	4.343 \| good	0.469 \| good	12.682 \| good	0.316 \| good
2026-03-08T12:00:00.000Z	54 \| moderate	10.69 \| good	47.645 \| good	4.946 \| good	0.608 \| good	10.264 \| good	0.282 \| good
2026-03-08T13:00:00.000Z	54 \| moderate	10.532 \| good	45.041 \| good	4.847 \| good	0.589 \| good	10.093 \| good	0.282 \| good
2026-03-08T14:00:00.000Z	49 \| good	9.189 \| good	38.847 \| good	6.51 \| good	0.666 \| good	12.388 \| good	0.292 \| good
2026-03-08T15:00:00.000Z	49 \| good	8.782 \| good	37.525 \| good	15.41 \| good	0.673 \| good	12.214 \| good	0.38 \| good
2026-03-08T16:00:00.000Z	44 \| good	7.792 \| good	31.529 \| good	28.913 \| good	0.538 \| good	11.652 \| good	0.277 \| good
2026-03-08T17:00:00.000Z	33 \| good	5.855 \| good	24.064 \| good	33.621 \| good	0.55 \| good	8.264 \| good	0.216 \| good
2026-03-08T18:00:00.000Z	35 \| good	3.01 \| good	11.544 \| good	37.789 \| good	0.358 \| good	4.951 \| good	0.183 \| good
2026-03-08T19:00:00.000Z	38 \| good	6.815 \| good	31.219 \| good	38.18 \| good	0.347 \| good	4.246 \| good	0.183 \| good
2026-03-08T20:00:00.000Z	36 \| good	5.143 \| good	28.489 \| good	38.988 \| good	0.253 \| good	3.284 \| good	0.155 \| good
2026-03-08T21:00:00.000Z	37 \| good	3.29 \| good	14.779 \| good	39.739 \| good	0.219 \| good	2.97 \| good	0.155 \| good
2026-03-08T22:00:00.000Z	35 \| good	1.143 \| good	5.266 \| good	37.744 \| good	0.262 \| good	2.614 \| good	0.163 \| good
2026-03-08T23:00:00.000Z	33 \| good	2.213 \| good	9.507 \| good	35.973 \| good	0.249 \| good	4.485 \| good	0.163 \| good
2026-03-09T00:00:00.000Z	31 \| good	3.068 \| good	13.391 \| good	33.551 \| good	0.308 \| good	5.976 \| good	0.15 \| good
2026-03-09T01:00:00.000Z	30 \| good	3.672 \| good	14.282 \| good	32.033 \| good	0.383 \| good	7.708 \| good	0.189 \| good
2026-03-09T02:00:00.000Z	30 \| good	4.569 \| good	18.713 \| good	32.143 \| good	0.315 \| good	9.805 \| good	0.19 \| good
2026-03-09T03:00:00.000Z	27 \| good	5.217 \| good	22.378 \| good	17.251 \| good	2.023 \| good	16.401 \| good	0.268 \| good
2026-03-09T04:00:00.000Z	33 \| good	5.979 \| good	26.506 \| good	18.961 \| good	0.281 \| good	9.905 \| good	0.28 \| good
2026-03-09T05:00:00.000Z	27 \| good	5.047 \| good	22.671 \| good	17.412 \| good	0.28 \| good	9.254 \| good	0.342 \| good
2026-03-09T06:00:00.000Z	22 \| good	4.16 \| good	17.835 \| good	13.648 \| good	0.267 \| good	9.879 \| good	0.374 \| good
2026-03-09T07:00:00.000Z	22 \| good	4.116 \| good	17.876 \| good	13.461 \| good	0.272 \| good	12.35 \| good	0.372 \| good
2026-03-09T08:00:00.000Z	27 \| good	4.823 \| good	21.225 \| good	6.963 \| good	0.327 \| good	14.137 \| good	0.38 \| good
2026-03-09T09:00:00.000Z	27 \| good	4.81 \| good	20.145 \| good	5.646 \| good	0.317 \| good	15.196 \| good	0.38 \| good
2026-03-09T10:00:00.000Z	33 \| good	5.541 \| good	23.078 \| good	4.934 \| good	0.365 \| good	19.75 \| good	0.403 \| good
2026-03-09T11:00:00.000Z	33 \| good	5.988 \| good	24.825 \| good	7.76 \| good	0.562 \| good	18.53 \| good	0.421 \| good
2026-03-09T12:00:00.000Z	33 \| good	5.503 \| good	23.292 \| good	4.071 \| good	0.978 \| good	20.321 \| good	0.578 \| good
2026-03-09T13:00:00.000Z	27 \| good	5.291 \| good	22.491 \| good	4.18 \| good	1.034 \| good	20.214 \| good	0.658 \| good
2026-03-09T14:00:00.000Z	44 \| good	8.201 \| good	35.415 \| good	10.759 \| good	1.434 \| good	19.27 \| good	0.742 \| good
2026-03-09T15:00:00.000Z	44 \| good	8.453 \| good	36.164 \| good	19.148 \| good	1.294 \| good	13.781 \| good	0.611 \| good
2026-03-09T16:00:00.000Z	33 \| good	5.974 \| good	25.122 \| good	32.898 \| good	0.592 \| good	11.231 \| good	0.472 \| good
2026-03-09T17:00:00.000Z	35 \| good	3.258 \| good	10.627 \| good	37.595 \| good	0.445 \| good	15.307 \| good	0.303 \| good
2026-03-09T18:00:00.000Z	37 \| good	2.309 \| good	9.488 \| good	40.183 \| good	0.3 \| good	10.743 \| good	0.162 \| good
2026-03-09T19:00:00.000Z	38 \| good	2.576 \| good	10.584 \| good	41.397 \| good	0.288 \| good	5.448 \| good	0.187 \| good
2026-03-09T20:00:00.000Z	43 \| good	1.945 \| good	8.113 \| good	46.082 \| good	0.245 \| good	4.838 \| good	0.198 \| good
2026-03-09T21:00:00.000Z	43 \| good	1.864 \| good	7.768 \| good	46.381 \| good	0.182 \| good	4.306 \| good	0.21 \| good
2026-03-09T22:00:00.000Z	42 \| good	1.159 \| good	4.785 \| good	45.077 \| good	0.271 \| good	4.288 \| good	0.253 \| good
2026-03-09T23:00:00.000Z	42 \| good	1.159 \| good	4.785 \| good	45.077 \| good	0.271 \| good	4.288 \| good	0.253 \| good
2026-03-10T00:00:00.000Z	27 \| good	5.126 \| good	22.119 \| good	27.023 \| good	2.314 \| good	18.061 \| good	0.284 \| good
2026-03-10T01:00:00.000Z	33 \| good	6.097 \| good	26.932 \| good	21.588 \| good	2.134 \| good	18.017 \| good	0.285 \| good
2026-03-10T02:00:00.000Z	58 \| moderate	13.498 \| fine	60.384 \| fine	14.255 \| good	1.954 \| good	17.972 \| good	0.286 \| good
2026-03-10T03:00:00.000Z	54 \| moderate	11.041 \| good	48.727 \| good	10.625 \| good	1.773 \| good	17.927 \| good	0.287 \| good
2026-03-10T04:00:00.000Z	56 \| moderate	12.294 \| fine	55.427 \| fine	5.972 \| good	1.647 \| good	17.336 \| good	0.281 \| good
2026-03-10T05:00:00.000Z	56 \| moderate	11.983 \| good	53.006 \| good	2.132 \| good	1.521 \| good	16.745 \| good	0.276 \| good
2026-03-10T06:00:00.000Z	58 \| moderate	12.523 \| fine	56.042 \| fine	1.101 \| good	1.394 \| good	16.153 \| good	0.271 \| good
2026-03-10T07:00:00.000Z	60 \| moderate	13.798 \| fine	62.505 \| fine	3.733 \| good	1.415 \| good	16.055 \| good	0.268 \| good
2026-03-10T08:00:00.000Z	52 \| moderate	10.407 \| good	46.186 \| good	2.557 \| good	1.437 \| good	15.956 \| good	0.266 \| good
2026-03-10T09:00:00.000Z	49 \| good	9.427 \| good	41.954 \| good	3.981 \| good	1.458 \| good	15.857 \| good	0.263 \| good
2026-03-10T10:00:00.000Z	44 \| good	7.642 \| good	33.389 \| good	3.118 \| good	1.541 \| good	16.206 \| good	0.281 \| good
2026-03-10T11:00:00.000Z	60 \| moderate	14.405 \| fine	64.241 \| fine	2.173 \| good	1.624 \| good	16.556 \| good	0.3 \| good
2026-03-10T12:00:00.000Z	58 \| moderate	13.485 \| fine	60.788 \| fine	1.605 \| good	1.706 \| good	16.905 \| good	0.318 \| good
2026-03-10T13:00:00.000Z	56 \| moderate	12.032 \| good	54.119 \| good	3.47 \| good	1.857 \| good	14.861 \| good	0.307 \| good
2026-03-10T14:00:00.000Z	52 \| moderate	9.635 \| good	42.854 \| good	8.637 \| good	2.009 \| good	12.817 \| good	0.296 \| good
2026-03-10T15:00:00.000Z	44 \| good	7.63 \| good	33.557 \| good	29.316 \| good	2.16 \| good	10.773 \| good	0.285 \| good
2026-03-10T16:00:00.000Z	33 \| good	6.461 \| good	28.793 \| good	33.469 \| good	2.276 \| good	9.272 \| good	0.261 \| good
2026-03-10T17:00:00.000Z	38 \| good	6.62 \| good	29.611 \| good	40.759 \| good	2.393 \| good	7.771 \| good	0.238 \| good
2026-03-10T18:00:00.000Z	36 \| good	6.443 \| good	28.638 \| good	38.626 \| good	2.509 \| good	6.27 \| good	0.215 \| good
2026-03-10T19:00:00.000Z	38 \| good	7.379 \| good	32.625 \| good	38.595 \| good	2.278 \| good	6.223 \| good	0.212 \| good
2026-03-10T20:00:00.000Z	34 \| good	6.493 \| good	28.887 \| good	37.418 \| good	2.048 \| good	6.175 \| good	0.209 \| good
2026-03-10T21:00:00.000Z	38 \| good	6.95 \| good	30.996 \| good	37.804 \| good	1.817 \| good	6.128 \| good	0.207 \| good
2026-03-10T22:00:00.000Z	35 \| good	5.297 \| good	22.762 \| good	38.097 \| good	1.723 \| good	8.692 \| good	0.224 \| good
2026-03-10T23:00:00.000Z	33 \| good	6.396 \| good	28.034 \| good	31.308 \| good	1.629 \| good	11.256 \| good	0.242 \| good
2026-03-11T00:00:00.000Z	33 \| good	6.335 \| good	28.177 \| good	23.244 \| good	1.535 \| good	13.819 \| good	0.26 \| good
2026-03-11T01:00:00.000Z	33 \| good	5.603 \| good	24.463 \| good	24.819 \| good	1.542 \| good	13.028 \| good	0.255 \| good
2026-03-11T02:00:00.000Z	62 \| moderate	15.091 \| fine	67.595 \| fine	19.71 \| good	1.55 \| good	12.237 \| good	0.25 \| good
2026-03-11T03:00:00.000Z	52 \| moderate	9.933 \| good	44.109 \| good	20.628 \| good	1.558 \| good	11.446 \| good	0.246 \| good
2026-03-11T04:00:00.000Z	44 \| good	7.645 \| good	33.911 \| good	20.643 \| good	1.482 \| good	10.955 \| good	0.238 \| good
2026-03-11T05:00:00.000Z	38 \| good	7.015 \| good	31.185 \| good	19.089 \| good	1.406 \| good	10.465 \| good	0.23 \| good
2026-03-11T06:00:00.000Z	69 \| moderate	18.711 \| fine	18.827 \| good	25.247 \| good	1.334 \| good	10.001 \| good	0.222 \| good
2026-03-11T07:00:00.000Z	44 \| good	8.346 \| good	36.748 \| good	15.996 \| good	1.363 \| good	9.448 \| good	0.211 \| good
2026-03-11T08:00:00.000Z	52 \| moderate	10.015 \| good	44.754 \| good	2.485 \| good	1.396 \| good	8.922 \| good	0.201 \| good
2026-03-11T09:00:00.000Z	49 \| good	9.49 \| good	42.345 \| good	1.669 \| good	1.428 \| good	8.395 \| good	0.191 \| good
2026-03-11T10:00:00.000Z	33 \| good	6.439 \| good	28.555 \| good	10 \| good	1.53 \| good	9.299 \| good	0.194 \| good
2026-03-11T11:00:00.000Z	44 \| good	7.713 \| good	33.838 \| good	12.609 \| good	1.631 \| good	10.202 \| good	0.198 \| good
2026-03-11T12:00:00.000Z	64 \| moderate	16.152 \| fine	16.248 \| good	17.384 \| good	1.725 \| good	11.088 \| good	0.202 \| good
2026-03-11T13:00:00.000Z	64 \| moderate	15.82 \| fine	15.896 \| good	19.457 \| good	1.847 \| good	9.923 \| good	0.205 \| good
2026-03-11T14:00:00.000Z	62 \| moderate	14.647 \| fine	14.715 \| good	21.531 \| good	1.97 \| good	8.759 \| good	0.209 \| good
2026-03-11T15:00:00.000Z	58 \| moderate	12.86 \| fine	12.933 \| good	23.604 \| good	2.093 \| good	7.594 \| good	0.212 \| good
2026-03-11T16:00:00.000Z	56 \| moderate	12.257 \| fine	12.33 \| good	27.401 \| good	1.945 \| good	6.589 \| good	0.199 \| good
2026-03-11T17:00:00.000Z	22 \| good	3.086 \| good	12.389 \| good	23.913 \| good	1.79 \| good	5.6 \| good	0.186 \| good
2026-03-11T18:00:00.000Z	54 \| moderate	11.145 \| good	11.247 \| good	34.996 \| good	1.65 \| good	4.58 \| good	0.173 \| good
2026-03-11T19:00:00.000Z	54 \| moderate	11.02 \| good	11.146 \| good	35.638 \| good	1.44 \| good	4.428 \| good	0.168 \| good
2026-03-11T20:00:00.000Z	54 \| moderate	10.65 \| good	10.782 \| good	36.281 \| good	1.23 \| good	4.275 \| good	0.162 \| good
2026-03-11T21:00:00.000Z	52 \| moderate	10.082 \| good	10.194 \| good	36.923 \| good	1.02 \| good	4.123 \| good	0.157 \| good
2026-03-11T22:00:00.000Z	49 \| good	9.479 \| good	9.565 \| good	34.674 \| good	1.017 \| good	5.135 \| good	0.159 \| good
2026-03-11T23:00:00.000Z	49 \| good	8.739 \| good	8.816 \| good	32.425 \| good	1.015 \| good	6.147 \| good	0.161 \| good

Timonium

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Timonium, Maryland air quality map: Track AQI near you

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How accurate is Maryland, USA air quality data?

Air quality data and pollutant measurements for Maryland, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.

Source: Ambee Data Sources

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Frequently asked questions

How often is the air quality data for Timonium, Maryland updated?

The air quality for Timonium, Maryland is updated every hour.

When was the worst air quality at Timonium, Maryland in the last 24 hrs?

The worst air quality in Timonium, Maryland in the last 24 hours was observed at 03:00:00 on 2026-03-09.

When was the best air quality at Timonium, Maryland in the last 24 hrs?

In the last 24 hrs, the best air quality in Timonium, Maryland was observed at 07:00:00 on 2026-03-09.

What is the current air quality in Timonium, Maryland?

The current air quality in Timonium, Maryland is 42, categorized as Good based on real-time data.

What pollutant is the most common in Timonium, Maryland?

The most common pollutant in Timonium, Maryland is O3.

What should I do if the air quality in Timonium, Maryland is poor?

If the air quality in Timonium, Maryland is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Timonium, Maryland?

The current PM_2.5 concentration at Timonium, Maryland is 1.159 μg/m³.

What is the current concentration of PM₁₀ in Timonium, Maryland?

The current PM₁₀ concentration at Timonium, Maryland is 4.785 μg/m³.

What is the current concentration of carbon monoxide (CO) in Timonium, Maryland?

The current carbon monoxide (CO) concentration at Timonium, Maryland is 0.253 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Timonium, Maryland?

The current sulfur dioxide (SO₂) concentration at Timonium, Maryland is 0.271 ppb.

What is the current concentration of ozone (O₃) in Timonium, Maryland?

The current ozone (O₃) concentration at Timonium, Maryland is 45.077 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Timonium, Maryland?

The current nitrogen dioxide (NO₂) concentration at Timonium, Maryland is 4.288 ppb.

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