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

The current PM10 concentration at Timonium, Maryland is 19.592 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Timonium, Maryland is 0.392 ppb.

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

The current ozone (O3) concentration at Timonium, Maryland is 33.689 ppm.

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

The current nitrogen dioxide (NO2) concentration at Timonium, Maryland is 8.253 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 4.493 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)

5.11 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

21.21 μg/m³

155

255

425

605+

Ozone (O₃)

27.37 ppb

201

201+

Sulfur Dioxide (SO₂)

0.39 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

13.09 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.12 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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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
2026-03-11T06:00:00.000Z	52 \| moderate	9.578 \| good	41.98 \| good	25.304 \| good	0.34 \| good	16.995 \| good	0.214 \| good
2026-03-11T07:00:00.000Z	52 \| moderate	9.693 \| good	42.473 \| good	25.041 \| good	0.33 \| good	16.986 \| good	0.229 \| good
2026-03-11T08:00:00.000Z	44 \| good	8.106 \| good	34.607 \| good	19.968 \| good	0.325 \| good	19.654 \| good	0.23 \| good
2026-03-11T09:00:00.000Z	44 \| good	7.643 \| good	32.877 \| good	15.157 \| good	0.346 \| good	20.692 \| good	0.23 \| good
2026-03-11T10:00:00.000Z	44 \| good	7.99 \| good	33.746 \| good	12.685 \| good	0.342 \| good	20.764 \| good	0.247 \| good
2026-03-11T11:00:00.000Z	49 \| good	8.683 \| good	36.83 \| good	12.911 \| good	0.395 \| good	22.278 \| good	0.308 \| good
2026-03-11T12:00:00.000Z	52 \| moderate	10.29 \| good	44.925 \| good	8.286 \| good	0.492 \| good	23.227 \| good	0.336 \| good
2026-03-11T13:00:00.000Z	52 \| moderate	10.322 \| good	44.305 \| good	8.36 \| good	0.499 \| good	25.57 \| good	0.368 \| good
2026-03-11T14:00:00.000Z	58 \| moderate	12.908 \| fine	55.414 \| fine	8.145 \| good	0.509 \| good	28.739 \| good	0.33 \| good
2026-03-11T15:00:00.000Z	56 \| moderate	12.114 \| fine	51.541 \| good	8.456 \| good	0.395 \| good	21.451 \| good	0.252 \| good
2026-03-11T16:00:00.000Z	56 \| moderate	11.991 \| good	51.218 \| good	10.235 \| good	0.534 \| good	22.562 \| good	0.235 \| good
2026-03-11T17:00:00.000Z	56 \| moderate	11.827 \| good	50.316 \| good	14.997 \| good	0.389 \| good	14.631 \| good	0.252 \| good
2026-03-11T18:00:00.000Z	56 \| moderate	11.647 \| good	49.075 \| good	21.072 \| good	0.378 \| good	9.02 \| good	0.207 \| good
2026-03-11T19:00:00.000Z	54 \| moderate	11.262 \| good	48.877 \| good	27.71 \| good	0.396 \| good	8.159 \| good	0.19 \| good
2026-03-11T20:00:00.000Z	54 \| moderate	11.348 \| good	48.941 \| good	31.934 \| good	0.466 \| good	6.153 \| good	0.19 \| good
2026-03-11T21:00:00.000Z	54 \| moderate	11.131 \| good	46.975 \| good	37.871 \| good	0.492 \| good	6.595 \| good	0.207 \| good
2026-03-11T22:00:00.000Z	52 \| moderate	9.631 \| good	41.25 \| good	37.81 \| good	0.508 \| good	8.01 \| good	0.27 \| good
2026-03-11T23:00:00.000Z	49 \| good	8.939 \| good	38.353 \| good	33.652 \| good	0.536 \| good	11.363 \| good	0.251 \| good
2026-03-12T00:00:00.000Z	49 \| good	9.442 \| good	39.791 \| good	34.785 \| good	0.543 \| good	11.733 \| good	0.249 \| good
2026-03-12T01:00:00.000Z	44 \| good	7.648 \| good	33.284 \| good	30.651 \| good	0.456 \| good	8.591 \| good	0.212 \| good
2026-03-12T02:00:00.000Z	27 \| good	4.897 \| good	19.404 \| good	22.652 \| good	0.449 \| good	11.916 \| good	0.29 \| good
2026-03-12T03:00:00.000Z	22 \| good	3.61 \| good	14.805 \| good	21.13 \| good	0.385 \| good	13.896 \| good	0.316 \| good
2026-03-12T04:00:00.000Z	33 \| good	5.957 \| good	25.02 \| good	17.547 \| good	0.378 \| good	11.579 \| good	0.297 \| good
2026-03-12T05:00:00.000Z	44 \| good	8.399 \| good	35.3 \| good	15.39 \| good	0.362 \| good	10.258 \| good	0.195 \| good
2026-03-12T06:00:00.000Z	52 \| moderate	9.529 \| good	40.64 \| good	16.981 \| good	0.313 \| good	10.069 \| good	0.193 \| good
2026-03-12T07:00:00.000Z	49 \| good	9.456 \| good	39.686 \| good	17.449 \| good	0.359 \| good	10.244 \| good	0.157 \| good
2026-03-12T08:00:00.000Z	38 \| good	6.936 \| good	29.45 \| good	11.771 \| good	0.369 \| good	9.411 \| good	0.206 \| good
2026-03-12T09:00:00.000Z	33 \| good	5.597 \| good	23.592 \| good	7.624 \| good	0.341 \| good	10.276 \| good	0.206 \| good
2026-03-12T10:00:00.000Z	22 \| good	4.481 \| good	19.086 \| good	16.24 \| good	0.371 \| good	5.938 \| good	0.167 \| good
2026-03-12T11:00:00.000Z	22 \| good	3.527 \| good	14.895 \| good	19.825 \| good	0.306 \| good	3.487 \| good	0.183 \| good
2026-03-12T12:00:00.000Z	18 \| good	3.176 \| good	13.551 \| good	19.199 \| good	0.309 \| good	2.847 \| good	0.134 \| good
2026-03-12T13:00:00.000Z	18 \| good	3.165 \| good	13.53 \| good	19.262 \| good	0.285 \| good	2.844 \| good	0.117 \| good
2026-03-12T14:00:00.000Z	23 \| good	2.344 \| good	9.849 \| good	25.372 \| good	0.267 \| good	4.064 \| good	0.117 \| good
2026-03-12T15:00:00.000Z	26 \| good	2.265 \| good	9.611 \| good	28.377 \| good	0.209 \| good	4.204 \| good	0.117 \| good
2026-03-12T16:00:00.000Z	29 \| good	2.411 \| good	9.996 \| good	30.512 \| good	0.208 \| good	4.639 \| good	0.142 \| good
2026-03-12T17:00:00.000Z	31 \| good	3.105 \| good	13.264 \| good	34.297 \| good	0.186 \| good	5.464 \| good	0.15 \| good
2026-03-12T18:00:00.000Z	31 \| good	2.858 \| good	11.832 \| good	33.331 \| good	0.207 \| good	6.712 \| good	0.202 \| good
2026-03-12T19:00:00.000Z	29 \| good	2.067 \| good	7.826 \| good	31.386 \| good	0.232 \| good	10.175 \| good	0.185 \| good
2026-03-12T20:00:00.000Z	23 \| good	3.008 \| good	12.239 \| good	25.309 \| good	0.129 \| good	13.706 \| good	0.202 \| good
2026-03-12T21:00:00.000Z	22 \| good	3.152 \| good	12.613 \| good	23.974 \| good	0.213 \| good	11.625 \| good	0.217 \| good
2026-03-12T22:00:00.000Z	31 \| good	4.41 \| good	18.152 \| good	33.072 \| good	0.264 \| good	4.72 \| good	0.216 \| good
2026-03-12T23:00:00.000Z	33 \| good	4.487 \| good	19.247 \| good	36.34 \| good	0.252 \| good	3.991 \| good	0.133 \| good
2026-03-13T00:00:00.000Z	33 \| good	4.468 \| good	19.453 \| good	36.493 \| good	0.264 \| good	4.104 \| good	0.133 \| good
2026-03-13T01:00:00.000Z	31 \| good	4.16 \| good	18.16 \| good	34.245 \| good	0.205 \| good	4.584 \| good	0.117 \| good
2026-03-13T02:00:00.000Z	33 \| good	4.548 \| good	19.615 \| good	35.704 \| good	0.162 \| good	6.739 \| good	0.117 \| good
2026-03-13T03:00:00.000Z	31 \| good	4.493 \| good	19.592 \| good	33.689 \| good	0.392 \| good	8.253 \| good	0.145 \| good
2026-03-13T04:00:00.000Z	27 \| good	5.107 \| good	21.208 \| good	27.366 \| good	0.39 \| good	13.09 \| good	0.117 \| good
2026-03-13T05:00:00.000Z	27 \| good	4.877 \| good	20.536 \| good	21.288 \| good	0.167 \| good	18.154 \| good	0.172 \| good
2026-03-13T05:00:00.000Z	27 \| good	5.107 \| good	21.208 \| good	27.366 \| good	0.39 \| good	13.09 \| good	0.117 \| good
2026-03-13T04:00:00.000Z	16 \| good	3.089 \| good	12.637 \| good	17.042 \| good	1.178 \| good	8.453 \| good	0.194 \| good
2026-03-13T05:00:00.000Z	27 \| good	4.956 \| good	21.413 \| good	13.244 \| good	1.258 \| good	9.82 \| good	0.205 \| good
2026-03-13T06:00:00.000Z	33 \| good	6.194 \| good	27.409 \| good	10.215 \| good	1.338 \| good	11.186 \| good	0.216 \| good
2026-03-13T07:00:00.000Z	38 \| good	7.279 \| good	31.839 \| good	6.99 \| good	1.413 \| good	11.047 \| good	0.215 \| good
2026-03-13T08:00:00.000Z	44 \| good	8.087 \| good	35.644 \| good	9.376 \| good	1.487 \| good	10.908 \| good	0.213 \| good
2026-03-13T09:00:00.000Z	44 \| good	7.79 \| good	34.024 \| good	7.442 \| good	1.562 \| good	10.769 \| good	0.212 \| good
2026-03-13T10:00:00.000Z	38 \| good	7.236 \| good	31.727 \| good	1.658 \| good	1.705 \| good	11.123 \| good	0.214 \| good
2026-03-13T11:00:00.000Z	22 \| good	4.145 \| good	18.036 \| good	2.534 \| good	1.847 \| good	11.477 \| good	0.216 \| good
2026-03-13T12:00:00.000Z	33 \| good	6.102 \| good	27.026 \| good	5.213 \| good	1.99 \| good	11.83 \| good	0.218 \| good
2026-03-13T13:00:00.000Z	33 \| good	5.767 \| good	25.452 \| good	15.471 \| good	2.022 \| good	9.857 \| good	0.213 \| good
2026-03-13T14:00:00.000Z	44 \| good	7.789 \| good	34.412 \| good	22.405 \| good	2.054 \| good	7.883 \| good	0.208 \| good
2026-03-13T15:00:00.000Z	33 \| good	6.2 \| good	27.642 \| good	30.524 \| good	2.086 \| good	5.91 \| good	0.203 \| good
2026-03-13T16:00:00.000Z	33 \| good	5.589 \| good	24.162 \| good	31.891 \| good	1.95 \| good	4.987 \| good	0.189 \| good
2026-03-13T17:00:00.000Z	33 \| good	4.909 \| good	21.192 \| good	36.381 \| good	1.814 \| good	4.065 \| good	0.175 \| good
2026-03-13T18:00:00.000Z	35 \| good	3.944 \| good	17.09 \| good	38.145 \| good	1.678 \| good	3.143 \| good	0.162 \| good
2026-03-13T19:00:00.000Z	40 \| good	3.517 \| good	15.814 \| good	43.383 \| good	1.606 \| good	2.829 \| good	0.16 \| good
2026-03-13T20:00:00.000Z	43 \| good	3.547 \| good	15.905 \| good	45.802 \| good	1.534 \| good	2.515 \| good	0.159 \| good
2026-03-13T21:00:00.000Z	43 \| good	3.839 \| good	16.953 \| good	45.895 \| good	1.461 \| good	2.201 \| good	0.157 \| good
2026-03-13T22:00:00.000Z	44 \| good	1.402 \| good	5.745 \| good	46.625 \| good	1.503 \| good	2.763 \| good	0.158 \| good
2026-03-13T23:00:00.000Z	38 \| good	5.281 \| good	22.769 \| good	41.416 \| good	1.546 \| good	3.325 \| good	0.159 \| good
2026-03-14T00:00:00.000Z	44 \| good	3.876 \| good	16.756 \| good	46.518 \| good	1.588 \| good	3.886 \| good	0.159 \| good
2026-03-14T01:00:00.000Z	43 \| good	5.056 \| good	21.788 \| good	46.161 \| good	1.593 \| good	3.798 \| good	0.157 \| good
2026-03-14T02:00:00.000Z	38 \| good	6.525 \| good	28.988 \| good	36.205 \| good	1.598 \| good	3.709 \| good	0.156 \| good
2026-03-14T03:00:00.000Z	33 \| good	6.488 \| good	28.867 \| good	35.176 \| good	1.604 \| good	3.621 \| good	0.154 \| good
2026-03-14T04:00:00.000Z	33 \| good	6.18 \| good	27.749 \| good	32.59 \| good	1.47 \| good	3.203 \| good	0.153 \| good
2026-03-14T05:00:00.000Z	44 \| good	7.691 \| good	33.913 \| good	32.093 \| good	1.337 \| good	2.784 \| good	0.153 \| good
2026-03-14T06:00:00.000Z	41 \| good	2.619 \| good	2.841 \| good	43.939 \| good	1.196 \| good	2.323 \| good	0.152 \| good
2026-03-14T07:00:00.000Z	49 \| good	8.978 \| good	39.613 \| good	31.256 \| good	1.192 \| good	2.199 \| good	0.155 \| good
2026-03-14T08:00:00.000Z	34 \| good	3.817 \| good	16.756 \| good	36.61 \| good	1.179 \| good	2.032 \| good	0.157 \| good
2026-03-14T09:00:00.000Z	29 \| good	4.631 \| good	19.97 \| good	31.467 \| good	1.167 \| good	1.865 \| good	0.16 \| good
2026-03-14T10:00:00.000Z	38 \| good	7.242 \| good	32.23 \| good	30.065 \| good	1.25 \| good	2.343 \| good	0.162 \| good
2026-03-14T11:00:00.000Z	30 \| good	2.099 \| good	8.808 \| good	31.603 \| good	1.332 \| good	2.82 \| good	0.164 \| good
2026-03-14T12:00:00.000Z	34 \| good	2.351 \| good	2.38 \| good	37.411 \| good	1.409 \| good	3.252 \| good	0.166 \| good
2026-03-14T13:00:00.000Z	36 \| good	2.516 \| good	2.59 \| good	39.202 \| good	1.47 \| good	2.87 \| good	0.162 \| good
2026-03-14T14:00:00.000Z	38 \| good	2.284 \| good	2.427 \| good	40.993 \| good	1.53 \| good	2.488 \| good	0.159 \| good
2026-03-14T15:00:00.000Z	40 \| good	2.219 \| good	2.436 \| good	42.784 \| good	1.59 \| good	2.106 \| good	0.155 \| good
2026-03-14T16:00:00.000Z	41 \| good	2.258 \| good	2.571 \| good	43.989 \| good	1.614 \| good	1.964 \| good	0.152 \| good
2026-03-14T17:00:00.000Z	32 \| good	4.305 \| good	18.656 \| good	34.856 \| good	1.645 \| good	1.853 \| good	0.149 \| good
2026-03-14T18:00:00.000Z	43 \| good	2.349 \| good	2.664 \| good	46.399 \| good	1.661 \| good	1.678 \| good	0.145 \| good
2026-03-14T19:00:00.000Z	44 \| good	2.363 \| good	2.685 \| good	47.007 \| good	1.677 \| good	1.769 \| good	0.145 \| good
2026-03-14T20:00:00.000Z	44 \| good	2.484 \| good	2.832 \| good	47.615 \| good	1.692 \| good	1.859 \| good	0.145 \| good
2026-03-14T21:00:00.000Z	44 \| good	2.677 \| good	3.031 \| good	48.223 \| good	1.707 \| good	1.95 \| good	0.145 \| good
2026-03-14T22:00:00.000Z	37 \| good	2.974 \| good	3.344 \| good	39.856 \| good	1.85 \| good	8.009 \| good	0.191 \| good
2026-03-14T23:00:00.000Z	29 \| good	5.168 \| good	5.484 \| good	31.489 \| good	1.992 \| good	14.069 \| good	0.237 \| good
2026-03-15T00:00:00.000Z	54 \| moderate	10.576 \| good	10.999 \| good	23.123 \| good	2.135 \| good	20.128 \| good	0.283 \| good
2026-03-15T01:00:00.000Z	62 \| moderate	15.277 \| fine	15.931 \| good	20.857 \| good	2.149 \| good	20.616 \| good	0.293 \| good
2026-03-15T02:00:00.000Z	64 \| moderate	15.507 \| fine	16.204 \| good	18.592 \| good	2.163 \| good	21.104 \| good	0.302 \| good
2026-03-15T03:00:00.000Z	58 \| moderate	13.494 \| fine	14.054 \| good	16.327 \| good	2.177 \| good	21.592 \| good	0.312 \| good

Timonium

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Timonium, Maryland air quality map: Track AQI near you

0.12ppm

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 06:00:00 on 2026-03-12.

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 01:00:00 on 2026-03-12.

What is the current air quality in Timonium, Maryland?

The current air quality in Timonium, Maryland is 31, 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 4.493 μg/m³.

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

The current PM₁₀ concentration at Timonium, Maryland is 19.592 μg/m³.

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

The current carbon monoxide (CO) concentration at Timonium, Maryland is 0.145 ppm.

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

The current sulfur dioxide (SO₂) concentration at Timonium, Maryland is 0.392 ppb.

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

The current ozone (O₃) concentration at Timonium, Maryland is 33.689 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Timonium, Maryland is 8.253 ppb.

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