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

The current PM10 concentration at Timonium, Maryland is 73.682 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Timonium, Maryland is 0.902 ppb.

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

The current ozone (O3) concentration at Timonium, Maryland is 4.986 ppm.

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

The current nitrogen dioxide (NO2) concentration at Timonium, Maryland is 17.338 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 17.468 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)

Moderate

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)

17.47 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

73.68 μg/m³

155

255

425

605+

Ozone (O₃)

4.99 ppb

201

201+

Sulfur Dioxide (SO₂)

0.90 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

17.34 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.41 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Timonium, Maryland

Get Live Pollen Counts

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
2025-12-05T09:00:00.000Z	26 \| good	2.765 \| good	11.082 \| good	27.979 \| good	0.137 \| good	3.574 \| good	0.134 \| good
2025-12-05T10:00:00.000Z	27 \| good	2.847 \| good	11.435 \| good	29.399 \| good	0.145 \| good	3.197 \| good	0.134 \| good
2025-12-05T11:00:00.000Z	28 \| good	2.57 \| good	10.779 \| good	29.523 \| good	0.18 \| good	4.394 \| good	0.178 \| good
2025-12-05T12:00:00.000Z	28 \| good	2.728 \| good	11.326 \| good	30.013 \| good	0.19 \| good	4.715 \| good	0.178 \| good
2025-12-05T13:00:00.000Z	29 \| good	3.583 \| good	15.45 \| good	30.92 \| good	0.139 \| good	5.583 \| good	0.227 \| good
2025-12-05T14:00:00.000Z	29 \| good	3.487 \| good	15.147 \| good	30.942 \| good	0.168 \| good	5.785 \| good	0.227 \| good
2025-12-05T15:00:00.000Z	29 \| good	2.863 \| good	11.595 \| good	31.28 \| good	0.167 \| good	6.416 \| good	0.21 \| good
2025-12-05T16:00:00.000Z	29 \| good	2.845 \| good	11.692 \| good	30.687 \| good	0.129 \| good	7.63 \| good	0.227 \| good
2025-12-05T17:00:00.000Z	27 \| good	3.58 \| good	14.985 \| good	29.344 \| good	0.152 \| good	8.093 \| good	0.21 \| good
2025-12-05T18:00:00.000Z	27 \| good	4.148 \| good	16.882 \| good	28.875 \| good	0.455 \| good	9.608 \| good	0.21 \| good
2025-12-05T19:00:00.000Z	26 \| good	4.22 \| good	18.582 \| good	27.613 \| good	0.201 \| good	10.795 \| good	0.238 \| good
2025-12-05T20:00:00.000Z	26 \| good	4.165 \| good	17.554 \| good	27.574 \| good	0.262 \| good	10.677 \| good	0.262 \| good
2025-12-05T21:00:00.000Z	27 \| good	4.712 \| good	19.412 \| good	25.785 \| good	0.21 \| good	11.853 \| good	0.245 \| good
2025-12-05T22:00:00.000Z	27 \| good	4.807 \| good	20.436 \| good	20.059 \| good	0.146 \| good	11.257 \| good	0.245 \| good
2025-12-05T23:00:00.000Z	33 \| good	6.363 \| good	26.65 \| good	19.116 \| good	0.145 \| good	11.369 \| good	0.279 \| good
2025-12-06T00:00:00.000Z	44 \| good	8.159 \| good	34.495 \| good	20.065 \| good	0.157 \| good	10.063 \| good	0.294 \| good
2025-12-06T01:00:00.000Z	52 \| moderate	9.94 \| good	42.533 \| good	19.32 \| good	0.133 \| good	12.82 \| good	0.266 \| good
2025-12-06T02:00:00.000Z	54 \| moderate	11.493 \| good	48.838 \| good	13.114 \| good	0.15 \| good	13.178 \| good	0.266 \| good
2025-12-06T03:00:00.000Z	58 \| moderate	13.13 \| fine	57.498 \| fine	11.86 \| good	0.136 \| good	13.176 \| good	0.266 \| good
2025-12-06T04:00:00.000Z	60 \| moderate	14.064 \| fine	59.658 \| fine	15.075 \| good	0.122 \| good	12.405 \| good	0.242 \| good
2025-12-06T05:00:00.000Z	62 \| moderate	14.948 \| fine	63.962 \| fine	14.386 \| good	0.178 \| good	12.675 \| good	0.249 \| good
2025-12-06T06:00:00.000Z	64 \| moderate	16.479 \| fine	71.312 \| fine	13.378 \| good	0.11 \| good	12.661 \| good	0.21 \| good
2025-12-06T07:00:00.000Z	66 \| moderate	16.513 \| fine	72.319 \| fine	11.571 \| good	0.113 \| good	12.914 \| good	0.21 \| good
2025-12-06T08:00:00.000Z	69 \| moderate	19.292 \| fine	83.051 \| fine	10.926 \| good	0.144 \| good	13.845 \| good	0.266 \| good
2025-12-06T09:00:00.000Z	67 \| moderate	18.494 \| fine	78.127 \| fine	12.336 \| good	0.127 \| good	14.069 \| good	0.242 \| good
2025-12-06T10:00:00.000Z	67 \| moderate	17.901 \| fine	75.467 \| fine	11.058 \| good	0.175 \| good	13.771 \| good	0.242 \| good
2025-12-06T11:00:00.000Z	67 \| moderate	18.361 \| fine	78.54 \| fine	10.05 \| good	0.186 \| good	13.054 \| good	0.244 \| good
2025-12-06T12:00:00.000Z	71 \| moderate	19.751 \| fine	84.324 \| fine	7.372 \| good	0.1 \| good	14.399 \| good	0.255 \| good
2025-12-06T13:00:00.000Z	71 \| moderate	19.601 \| fine	83.732 \| fine	8.44 \| good	0.103 \| good	11.516 \| good	0.272 \| good
2025-12-06T14:00:00.000Z	71 \| moderate	19.946 \| fine	83.72 \| fine	10.487 \| good	0.154 \| good	12.721 \| good	0.355 \| good
2025-12-06T15:00:00.000Z	69 \| moderate	18.998 \| fine	80.407 \| fine	9.936 \| good	0.188 \| good	11.057 \| good	0.355 \| good
2025-12-06T16:00:00.000Z	69 \| moderate	18.892 \| fine	77.62 \| fine	16.676 \| good	0.291 \| good	7.763 \| good	0.31 \| good
2025-12-06T17:00:00.000Z	62 \| moderate	15.201 \| fine	63.45 \| fine	18.536 \| good	0.294 \| good	6.574 \| good	0.31 \| good
2025-12-06T18:00:00.000Z	58 \| moderate	12.706 \| fine	51.741 \| good	19.371 \| good	0.366 \| good	7.348 \| good	0.259 \| good
2025-12-06T19:00:00.000Z	52 \| moderate	10.267 \| good	42.013 \| good	22.845 \| good	0.294 \| good	5.706 \| good	0.199 \| good
2025-12-06T20:00:00.000Z	49 \| good	8.839 \| good	34.457 \| good	23.207 \| good	0.286 \| good	5.899 \| good	0.182 \| good
2025-12-06T21:00:00.000Z	44 \| good	7.907 \| good	30.265 \| good	19.723 \| good	0.221 \| good	6.046 \| good	0.166 \| good
2025-12-06T22:00:00.000Z	44 \| good	8.216 \| good	33.552 \| good	20.461 \| good	0.191 \| good	9.614 \| good	0.183 \| good
2025-12-06T23:00:00.000Z	49 \| good	8.986 \| good	38.013 \| good	13.864 \| good	0.175 \| good	13.464 \| good	0.166 \| good
2025-12-07T00:00:00.000Z	54 \| moderate	10.946 \| good	47.519 \| good	14.243 \| good	0.173 \| good	16.652 \| good	0.281 \| good
2025-12-07T01:00:00.000Z	60 \| moderate	13.774 \| fine	60.024 \| fine	9.682 \| good	0.254 \| good	17.482 \| good	0.343 \| good
2025-12-07T02:00:00.000Z	64 \| moderate	15.854 \| fine	63.786 \| fine	8.652 \| good	0.421 \| good	16.46 \| good	0.414 \| good
2025-12-07T03:00:00.000Z	66 \| moderate	17.234 \| fine	72.524 \| fine	6.144 \| good	0.558 \| good	15.446 \| good	0.398 \| good
2025-12-07T04:00:00.000Z	67 \| moderate	18.117 \| fine	77.276 \| fine	4.022 \| good	0.858 \| good	15.267 \| good	0.437 \| good
2025-12-07T05:00:00.000Z	66 \| moderate	16.656 \| fine	69.892 \| fine	6.125 \| good	0.827 \| good	14.849 \| good	0.454 \| good
2025-12-07T06:00:00.000Z	66 \| moderate	17.496 \| fine	74.453 \| fine	5.239 \| good	0.885 \| good	17.105 \| good	0.439 \| good
2025-12-07T07:00:00.000Z	66 \| moderate	17.468 \| fine	73.682 \| fine	4.986 \| good	0.902 \| good	17.338 \| good	0.406 \| good
2025-12-07T08:00:00.000Z	66 \| moderate	17.468 \| fine	73.682 \| fine	4.986 \| good	0.902 \| good	17.338 \| good	0.406 \| good
2025-12-07T09:00:00.000Z	60 \| moderate	13.885 \| fine	62.406 \| fine	6.247 \| good	3.839 \| good	8.705 \| good	0.22 \| good
2025-12-07T10:00:00.000Z	60 \| moderate	13.993 \| fine	62.767 \| fine	5.17 \| good	3.867 \| good	10.183 \| good	0.231 \| good
2025-12-07T11:00:00.000Z	64 \| moderate	15.947 \| fine	70.892 \| fine	5.555 \| good	3.895 \| good	11.662 \| good	0.241 \| good
2025-12-07T12:00:00.000Z	66 \| moderate	16.564 \| fine	73.617 \| fine	7.918 \| good	3.924 \| good	13.141 \| good	0.252 \| good
2025-12-07T13:00:00.000Z	66 \| moderate	17.282 \| fine	76.359 \| fine	10.339 \| good	4.101 \| good	11.141 \| good	0.244 \| good
2025-12-07T14:00:00.000Z	62 \| moderate	15.256 \| fine	68.233 \| fine	15.915 \| good	4.278 \| good	9.141 \| good	0.236 \| good
2025-12-07T15:00:00.000Z	60 \| moderate	14.43 \| fine	64.233 \| fine	23.314 \| good	4.456 \| good	7.142 \| good	0.229 \| good
2025-12-07T16:00:00.000Z	62 \| moderate	14.586 \| fine	65.698 \| fine	28.266 \| good	4.631 \| good	6.469 \| good	0.215 \| good
2025-12-07T17:00:00.000Z	60 \| moderate	13.572 \| fine	61.028 \| fine	29.202 \| good	4.807 \| good	5.796 \| good	0.201 \| good
2025-12-07T18:00:00.000Z	56 \| moderate	12.072 \| good	54.145 \| good	30.867 \| good	4.982 \| good	5.123 \| good	0.187 \| good
2025-12-07T19:00:00.000Z	56 \| moderate	12.013 \| good	53.905 \| good	32.585 \| good	5.058 \| good	6.543 \| good	0.196 \| good
2025-12-07T20:00:00.000Z	60 \| moderate	14.023 \| fine	62.812 \| fine	34.238 \| good	5.133 \| good	7.963 \| good	0.204 \| good
2025-12-07T21:00:00.000Z	64 \| moderate	15.674 \| fine	69.701 \| fine	28.39 \| good	5.209 \| good	9.383 \| good	0.213 \| good
2025-12-07T22:00:00.000Z	67 \| moderate	17.8 \| fine	78.833 \| fine	17.025 \| good	5.228 \| good	14.561 \| good	0.276 \| good
2025-12-07T23:00:00.000Z	75 \| moderate	21.711 \| fine	95.427 \| fine	10.29 \| good	5.247 \| good	19.739 \| good	0.34 \| good
2025-12-08T00:00:00.000Z	82 \| moderate	25.882 \| fine	112.537 \| fine	4.053 \| good	5.266 \| good	24.916 \| good	0.403 \| good
2025-12-08T01:00:00.000Z	79 \| moderate	24.183 \| fine	105.807 \| fine	4.48 \| good	5.139 \| good	25.525 \| good	0.399 \| good
2025-12-08T02:00:00.000Z	77 \| moderate	22.587 \| fine	98.48 \| fine	5.953 \| good	5.012 \| good	26.134 \| good	0.395 \| good
2025-12-08T03:00:00.000Z	67 \| moderate	17.501 \| fine	77.388 \| fine	11.298 \| good	4.886 \| good	26.742 \| good	0.391 \| good
2025-12-08T04:00:00.000Z	56 \| moderate	12.207 \| fine	54.479 \| good	11.756 \| good	4.537 \| good	24.459 \| good	0.365 \| good
2025-12-08T05:00:00.000Z	52 \| moderate	10.313 \| good	45.888 \| good	15.704 \| good	4.189 \| good	22.176 \| good	0.339 \| good
2025-12-08T06:00:00.000Z	54 \| moderate	10.763 \| good	47.561 \| good	21.062 \| good	3.84 \| good	19.892 \| good	0.313 \| good
2025-12-08T07:00:00.000Z	44 \| good	7.62 \| good	33.697 \| good	23.207 \| good	3.519 \| good	14.719 \| good	0.271 \| good
2025-12-08T08:00:00.000Z	25 \| good	1.987 \| good	7.923 \| good	27.121 \| good	3.198 \| good	9.547 \| good	0.229 \| good
2025-12-08T09:00:00.000Z	27 \| good	1.51 \| good	6.081 \| good	28.628 \| good	2.877 \| good	4.374 \| good	0.187 \| good
2025-12-08T10:00:00.000Z	24 \| good	1.526 \| good	6.184 \| good	26.087 \| good	2.271 \| good	3.836 \| good	0.176 \| good
2025-12-08T11:00:00.000Z	24 \| good	2.29 \| good	9.344 \| good	26.351 \| good	1.665 \| good	3.298 \| good	0.164 \| good
2025-12-08T12:00:00.000Z	24 \| good	2.155 \| good	8.713 \| good	25.678 \| good	1.06 \| good	2.759 \| good	0.152 \| good
2025-12-08T13:00:00.000Z	24 \| good	2.147 \| good	8.713 \| good	25.727 \| good	1.195 \| good	2.637 \| good	0.154 \| good
2025-12-08T14:00:00.000Z	23 \| good	1.46 \| good	5.535 \| good	25.413 \| good	1.33 \| good	2.515 \| good	0.156 \| good
2025-12-08T15:00:00.000Z	22 \| good	0.691 \| good	2.473 \| good	24.43 \| good	1.465 \| good	2.393 \| good	0.157 \| good
2025-12-08T16:00:00.000Z	23 \| good	1.824 \| good	7.708 \| good	25.365 \| good	1.467 \| good	2.206 \| good	0.154 \| good
2025-12-08T17:00:00.000Z	24 \| good	1.237 \| good	4.912 \| good	25.944 \| good	1.47 \| good	2.02 \| good	0.15 \| good
2025-12-08T18:00:00.000Z	25 \| good	0.926 \| good	3.374 \| good	27.014 \| good	1.472 \| good	1.833 \| good	0.146 \| good
2025-12-08T19:00:00.000Z	26 \| good	0.131 \| good	0.194 \| good	27.599 \| good	1.553 \| good	2.284 \| good	0.147 \| good
2025-12-08T20:00:00.000Z	25 \| good	0.604 \| good	2.066 \| good	27.236 \| good	1.634 \| good	2.734 \| good	0.147 \| good
2025-12-08T21:00:00.000Z	24 \| good	1.107 \| good	4.527 \| good	25.602 \| good	1.715 \| good	3.184 \| good	0.148 \| good
2025-12-08T22:00:00.000Z	20 \| good	1.395 \| good	5.413 \| good	21.834 \| good	1.813 \| good	5.96 \| good	0.169 \| good
2025-12-08T23:00:00.000Z	22 \| good	4.195 \| good	18.634 \| good	18.843 \| good	1.911 \| good	8.735 \| good	0.19 \| good
2025-12-09T00:00:00.000Z	44 \| good	7.605 \| good	33.474 \| good	14.994 \| good	2.008 \| good	11.511 \| good	0.212 \| good
2025-12-09T01:00:00.000Z	33 \| good	6.075 \| good	26.789 \| good	13.422 \| good	2.126 \| good	11.198 \| good	0.211 \| good
2025-12-09T02:00:00.000Z	33 \| good	5.749 \| good	25.371 \| good	10.855 \| good	2.243 \| good	10.886 \| good	0.21 \| good
2025-12-09T03:00:00.000Z	22 \| good	3.773 \| good	16.514 \| good	9.228 \| good	2.361 \| good	10.573 \| good	0.209 \| good
2025-12-09T04:00:00.000Z	11 \| good	2.387 \| good	9.715 \| good	8.173 \| good	2.267 \| good	9.718 \| good	0.205 \| good
2025-12-09T05:00:00.000Z	22 \| good	3.672 \| good	16.201 \| good	7.85 \| good	2.173 \| good	8.863 \| good	0.201 \| good
2025-12-09T06:00:00.000Z	44 \| good	8.343 \| good	9.498 \| good	25.015 \| good	2.087 \| good	7.938 \| good	0.197 \| good
2025-12-09T07:00:00.000Z	27 \| good	4.648 \| good	19.989 \| good	8.89 \| good	2.043 \| good	8.084 \| good	0.197 \| good
2025-12-09T08:00:00.000Z	22 \| good	4.107 \| good	17.705 \| good	9.92 \| good	2.006 \| good	8.159 \| good	0.197 \| good

Timonium

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Timonium, Maryland air quality map: Track AQI near you

0.40ppm

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 02:00:00 on 2025-12-06.

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 10:00:00 on 2025-12-06.

What is the current air quality in Timonium, Maryland?

The current air quality in Timonium, Maryland is 66, categorized as Moderate based on real-time data.

What pollutant is the most common in Timonium, Maryland?

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

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 17.468 μg/m³.

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

The current PM₁₀ concentration at Timonium, Maryland is 73.682 μg/m³.

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

The current carbon monoxide (CO) concentration at Timonium, Maryland is 0.406 ppm.

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

The current sulfur dioxide (SO₂) concentration at Timonium, Maryland is 0.902 ppb.

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

The current ozone (O₃) concentration at Timonium, Maryland is 4.986 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Timonium, Maryland is 17.338 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T09:00:00.000Z	26 \| good	2.765 \| good	11.082 \| good	27.979 \| good	0.137 \| good	3.574 \| good	0.134 \| good
2025-12-05T10:00:00.000Z	27 \| good	2.847 \| good	11.435 \| good	29.399 \| good	0.145 \| good	3.197 \| good	0.134 \| good
2025-12-05T11:00:00.000Z	28 \| good	2.57 \| good	10.779 \| good	29.523 \| good	0.18 \| good	4.394 \| good	0.178 \| good
2025-12-05T12:00:00.000Z	28 \| good	2.728 \| good	11.326 \| good	30.013 \| good	0.19 \| good	4.715 \| good	0.178 \| good
2025-12-05T13:00:00.000Z	29 \| good	3.583 \| good	15.45 \| good	30.92 \| good	0.139 \| good	5.583 \| good	0.227 \| good
2025-12-05T14:00:00.000Z	29 \| good	3.487 \| good	15.147 \| good	30.942 \| good	0.168 \| good	5.785 \| good	0.227 \| good
2025-12-05T15:00:00.000Z	29 \| good	2.863 \| good	11.595 \| good	31.28 \| good	0.167 \| good	6.416 \| good	0.21 \| good
2025-12-05T16:00:00.000Z	29 \| good	2.845 \| good	11.692 \| good	30.687 \| good	0.129 \| good	7.63 \| good	0.227 \| good
2025-12-05T17:00:00.000Z	27 \| good	3.58 \| good	14.985 \| good	29.344 \| good	0.152 \| good	8.093 \| good	0.21 \| good
2025-12-05T18:00:00.000Z	27 \| good	4.148 \| good	16.882 \| good	28.875 \| good	0.455 \| good	9.608 \| good	0.21 \| good
2025-12-05T19:00:00.000Z	26 \| good	4.22 \| good	18.582 \| good	27.613 \| good	0.201 \| good	10.795 \| good	0.238 \| good
2025-12-05T20:00:00.000Z	26 \| good	4.165 \| good	17.554 \| good	27.574 \| good	0.262 \| good	10.677 \| good	0.262 \| good
2025-12-05T21:00:00.000Z	27 \| good	4.712 \| good	19.412 \| good	25.785 \| good	0.21 \| good	11.853 \| good	0.245 \| good
2025-12-05T22:00:00.000Z	27 \| good	4.807 \| good	20.436 \| good	20.059 \| good	0.146 \| good	11.257 \| good	0.245 \| good
2025-12-05T23:00:00.000Z	33 \| good	6.363 \| good	26.65 \| good	19.116 \| good	0.145 \| good	11.369 \| good	0.279 \| good
2025-12-06T00:00:00.000Z	44 \| good	8.159 \| good	34.495 \| good	20.065 \| good	0.157 \| good	10.063 \| good	0.294 \| good
2025-12-06T01:00:00.000Z	52 \| moderate	9.94 \| good	42.533 \| good	19.32 \| good	0.133 \| good	12.82 \| good	0.266 \| good
2025-12-06T02:00:00.000Z	54 \| moderate	11.493 \| good	48.838 \| good	13.114 \| good	0.15 \| good	13.178 \| good	0.266 \| good
2025-12-06T03:00:00.000Z	58 \| moderate	13.13 \| fine	57.498 \| fine	11.86 \| good	0.136 \| good	13.176 \| good	0.266 \| good
2025-12-06T04:00:00.000Z	60 \| moderate	14.064 \| fine	59.658 \| fine	15.075 \| good	0.122 \| good	12.405 \| good	0.242 \| good
2025-12-06T05:00:00.000Z	62 \| moderate	14.948 \| fine	63.962 \| fine	14.386 \| good	0.178 \| good	12.675 \| good	0.249 \| good
2025-12-06T06:00:00.000Z	64 \| moderate	16.479 \| fine	71.312 \| fine	13.378 \| good	0.11 \| good	12.661 \| good	0.21 \| good
2025-12-06T07:00:00.000Z	66 \| moderate	16.513 \| fine	72.319 \| fine	11.571 \| good	0.113 \| good	12.914 \| good	0.21 \| good
2025-12-06T08:00:00.000Z	69 \| moderate	19.292 \| fine	83.051 \| fine	10.926 \| good	0.144 \| good	13.845 \| good	0.266 \| good
2025-12-06T09:00:00.000Z	67 \| moderate	18.494 \| fine	78.127 \| fine	12.336 \| good	0.127 \| good	14.069 \| good	0.242 \| good
2025-12-06T10:00:00.000Z	67 \| moderate	17.901 \| fine	75.467 \| fine	11.058 \| good	0.175 \| good	13.771 \| good	0.242 \| good
2025-12-06T11:00:00.000Z	67 \| moderate	18.361 \| fine	78.54 \| fine	10.05 \| good	0.186 \| good	13.054 \| good	0.244 \| good
2025-12-06T12:00:00.000Z	71 \| moderate	19.751 \| fine	84.324 \| fine	7.372 \| good	0.1 \| good	14.399 \| good	0.255 \| good
2025-12-06T13:00:00.000Z	71 \| moderate	19.601 \| fine	83.732 \| fine	8.44 \| good	0.103 \| good	11.516 \| good	0.272 \| good
2025-12-06T14:00:00.000Z	71 \| moderate	19.946 \| fine	83.72 \| fine	10.487 \| good	0.154 \| good	12.721 \| good	0.355 \| good
2025-12-06T15:00:00.000Z	69 \| moderate	18.998 \| fine	80.407 \| fine	9.936 \| good	0.188 \| good	11.057 \| good	0.355 \| good
2025-12-06T16:00:00.000Z	69 \| moderate	18.892 \| fine	77.62 \| fine	16.676 \| good	0.291 \| good	7.763 \| good	0.31 \| good
2025-12-06T17:00:00.000Z	62 \| moderate	15.201 \| fine	63.45 \| fine	18.536 \| good	0.294 \| good	6.574 \| good	0.31 \| good
2025-12-06T18:00:00.000Z	58 \| moderate	12.706 \| fine	51.741 \| good	19.371 \| good	0.366 \| good	7.348 \| good	0.259 \| good
2025-12-06T19:00:00.000Z	52 \| moderate	10.267 \| good	42.013 \| good	22.845 \| good	0.294 \| good	5.706 \| good	0.199 \| good
2025-12-06T20:00:00.000Z	49 \| good	8.839 \| good	34.457 \| good	23.207 \| good	0.286 \| good	5.899 \| good	0.182 \| good
2025-12-06T21:00:00.000Z	44 \| good	7.907 \| good	30.265 \| good	19.723 \| good	0.221 \| good	6.046 \| good	0.166 \| good
2025-12-06T22:00:00.000Z	44 \| good	8.216 \| good	33.552 \| good	20.461 \| good	0.191 \| good	9.614 \| good	0.183 \| good
2025-12-06T23:00:00.000Z	49 \| good	8.986 \| good	38.013 \| good	13.864 \| good	0.175 \| good	13.464 \| good	0.166 \| good
2025-12-07T00:00:00.000Z	54 \| moderate	10.946 \| good	47.519 \| good	14.243 \| good	0.173 \| good	16.652 \| good	0.281 \| good
2025-12-07T01:00:00.000Z	60 \| moderate	13.774 \| fine	60.024 \| fine	9.682 \| good	0.254 \| good	17.482 \| good	0.343 \| good
2025-12-07T02:00:00.000Z	64 \| moderate	15.854 \| fine	63.786 \| fine	8.652 \| good	0.421 \| good	16.46 \| good	0.414 \| good
2025-12-07T03:00:00.000Z	66 \| moderate	17.234 \| fine	72.524 \| fine	6.144 \| good	0.558 \| good	15.446 \| good	0.398 \| good
2025-12-07T04:00:00.000Z	67 \| moderate	18.117 \| fine	77.276 \| fine	4.022 \| good	0.858 \| good	15.267 \| good	0.437 \| good
2025-12-07T05:00:00.000Z	66 \| moderate	16.656 \| fine	69.892 \| fine	6.125 \| good	0.827 \| good	14.849 \| good	0.454 \| good
2025-12-07T06:00:00.000Z	66 \| moderate	17.496 \| fine	74.453 \| fine	5.239 \| good	0.885 \| good	17.105 \| good	0.439 \| good
2025-12-07T07:00:00.000Z	66 \| moderate	17.468 \| fine	73.682 \| fine	4.986 \| good	0.902 \| good	17.338 \| good	0.406 \| good
2025-12-07T08:00:00.000Z	66 \| moderate	17.468 \| fine	73.682 \| fine	4.986 \| good	0.902 \| good	17.338 \| good	0.406 \| good
2025-12-07T09:00:00.000Z	60 \| moderate	13.885 \| fine	62.406 \| fine	6.247 \| good	3.839 \| good	8.705 \| good	0.22 \| good
2025-12-07T10:00:00.000Z	60 \| moderate	13.993 \| fine	62.767 \| fine	5.17 \| good	3.867 \| good	10.183 \| good	0.231 \| good
2025-12-07T11:00:00.000Z	64 \| moderate	15.947 \| fine	70.892 \| fine	5.555 \| good	3.895 \| good	11.662 \| good	0.241 \| good
2025-12-07T12:00:00.000Z	66 \| moderate	16.564 \| fine	73.617 \| fine	7.918 \| good	3.924 \| good	13.141 \| good	0.252 \| good
2025-12-07T13:00:00.000Z	66 \| moderate	17.282 \| fine	76.359 \| fine	10.339 \| good	4.101 \| good	11.141 \| good	0.244 \| good
2025-12-07T14:00:00.000Z	62 \| moderate	15.256 \| fine	68.233 \| fine	15.915 \| good	4.278 \| good	9.141 \| good	0.236 \| good
2025-12-07T15:00:00.000Z	60 \| moderate	14.43 \| fine	64.233 \| fine	23.314 \| good	4.456 \| good	7.142 \| good	0.229 \| good
2025-12-07T16:00:00.000Z	62 \| moderate	14.586 \| fine	65.698 \| fine	28.266 \| good	4.631 \| good	6.469 \| good	0.215 \| good
2025-12-07T17:00:00.000Z	60 \| moderate	13.572 \| fine	61.028 \| fine	29.202 \| good	4.807 \| good	5.796 \| good	0.201 \| good
2025-12-07T18:00:00.000Z	56 \| moderate	12.072 \| good	54.145 \| good	30.867 \| good	4.982 \| good	5.123 \| good	0.187 \| good
2025-12-07T19:00:00.000Z	56 \| moderate	12.013 \| good	53.905 \| good	32.585 \| good	5.058 \| good	6.543 \| good	0.196 \| good
2025-12-07T20:00:00.000Z	60 \| moderate	14.023 \| fine	62.812 \| fine	34.238 \| good	5.133 \| good	7.963 \| good	0.204 \| good
2025-12-07T21:00:00.000Z	64 \| moderate	15.674 \| fine	69.701 \| fine	28.39 \| good	5.209 \| good	9.383 \| good	0.213 \| good
2025-12-07T22:00:00.000Z	67 \| moderate	17.8 \| fine	78.833 \| fine	17.025 \| good	5.228 \| good	14.561 \| good	0.276 \| good
2025-12-07T23:00:00.000Z	75 \| moderate	21.711 \| fine	95.427 \| fine	10.29 \| good	5.247 \| good	19.739 \| good	0.34 \| good
2025-12-08T00:00:00.000Z	82 \| moderate	25.882 \| fine	112.537 \| fine	4.053 \| good	5.266 \| good	24.916 \| good	0.403 \| good
2025-12-08T01:00:00.000Z	79 \| moderate	24.183 \| fine	105.807 \| fine	4.48 \| good	5.139 \| good	25.525 \| good	0.399 \| good
2025-12-08T02:00:00.000Z	77 \| moderate	22.587 \| fine	98.48 \| fine	5.953 \| good	5.012 \| good	26.134 \| good	0.395 \| good
2025-12-08T03:00:00.000Z	67 \| moderate	17.501 \| fine	77.388 \| fine	11.298 \| good	4.886 \| good	26.742 \| good	0.391 \| good
2025-12-08T04:00:00.000Z	56 \| moderate	12.207 \| fine	54.479 \| good	11.756 \| good	4.537 \| good	24.459 \| good	0.365 \| good
2025-12-08T05:00:00.000Z	52 \| moderate	10.313 \| good	45.888 \| good	15.704 \| good	4.189 \| good	22.176 \| good	0.339 \| good
2025-12-08T06:00:00.000Z	54 \| moderate	10.763 \| good	47.561 \| good	21.062 \| good	3.84 \| good	19.892 \| good	0.313 \| good
2025-12-08T07:00:00.000Z	44 \| good	7.62 \| good	33.697 \| good	23.207 \| good	3.519 \| good	14.719 \| good	0.271 \| good
2025-12-08T08:00:00.000Z	25 \| good	1.987 \| good	7.923 \| good	27.121 \| good	3.198 \| good	9.547 \| good	0.229 \| good
2025-12-08T09:00:00.000Z	27 \| good	1.51 \| good	6.081 \| good	28.628 \| good	2.877 \| good	4.374 \| good	0.187 \| good
2025-12-08T10:00:00.000Z	24 \| good	1.526 \| good	6.184 \| good	26.087 \| good	2.271 \| good	3.836 \| good	0.176 \| good
2025-12-08T11:00:00.000Z	24 \| good	2.29 \| good	9.344 \| good	26.351 \| good	1.665 \| good	3.298 \| good	0.164 \| good
2025-12-08T12:00:00.000Z	24 \| good	2.155 \| good	8.713 \| good	25.678 \| good	1.06 \| good	2.759 \| good	0.152 \| good
2025-12-08T13:00:00.000Z	24 \| good	2.147 \| good	8.713 \| good	25.727 \| good	1.195 \| good	2.637 \| good	0.154 \| good
2025-12-08T14:00:00.000Z	23 \| good	1.46 \| good	5.535 \| good	25.413 \| good	1.33 \| good	2.515 \| good	0.156 \| good
2025-12-08T15:00:00.000Z	22 \| good	0.691 \| good	2.473 \| good	24.43 \| good	1.465 \| good	2.393 \| good	0.157 \| good
2025-12-08T16:00:00.000Z	23 \| good	1.824 \| good	7.708 \| good	25.365 \| good	1.467 \| good	2.206 \| good	0.154 \| good
2025-12-08T17:00:00.000Z	24 \| good	1.237 \| good	4.912 \| good	25.944 \| good	1.47 \| good	2.02 \| good	0.15 \| good
2025-12-08T18:00:00.000Z	25 \| good	0.926 \| good	3.374 \| good	27.014 \| good	1.472 \| good	1.833 \| good	0.146 \| good
2025-12-08T19:00:00.000Z	26 \| good	0.131 \| good	0.194 \| good	27.599 \| good	1.553 \| good	2.284 \| good	0.147 \| good
2025-12-08T20:00:00.000Z	25 \| good	0.604 \| good	2.066 \| good	27.236 \| good	1.634 \| good	2.734 \| good	0.147 \| good
2025-12-08T21:00:00.000Z	24 \| good	1.107 \| good	4.527 \| good	25.602 \| good	1.715 \| good	3.184 \| good	0.148 \| good
2025-12-08T22:00:00.000Z	20 \| good	1.395 \| good	5.413 \| good	21.834 \| good	1.813 \| good	5.96 \| good	0.169 \| good
2025-12-08T23:00:00.000Z	22 \| good	4.195 \| good	18.634 \| good	18.843 \| good	1.911 \| good	8.735 \| good	0.19 \| good
2025-12-09T00:00:00.000Z	44 \| good	7.605 \| good	33.474 \| good	14.994 \| good	2.008 \| good	11.511 \| good	0.212 \| good
2025-12-09T01:00:00.000Z	33 \| good	6.075 \| good	26.789 \| good	13.422 \| good	2.126 \| good	11.198 \| good	0.211 \| good
2025-12-09T02:00:00.000Z	33 \| good	5.749 \| good	25.371 \| good	10.855 \| good	2.243 \| good	10.886 \| good	0.21 \| good
2025-12-09T03:00:00.000Z	22 \| good	3.773 \| good	16.514 \| good	9.228 \| good	2.361 \| good	10.573 \| good	0.209 \| good
2025-12-09T04:00:00.000Z	11 \| good	2.387 \| good	9.715 \| good	8.173 \| good	2.267 \| good	9.718 \| good	0.205 \| good
2025-12-09T05:00:00.000Z	22 \| good	3.672 \| good	16.201 \| good	7.85 \| good	2.173 \| good	8.863 \| good	0.201 \| good
2025-12-09T06:00:00.000Z	44 \| good	8.343 \| good	9.498 \| good	25.015 \| good	2.087 \| good	7.938 \| good	0.197 \| good
2025-12-09T07:00:00.000Z	27 \| good	4.648 \| good	19.989 \| good	8.89 \| good	2.043 \| good	8.084 \| good	0.197 \| good
2025-12-09T08:00:00.000Z	22 \| good	4.107 \| good	17.705 \| good	9.92 \| good	2.006 \| good	8.159 \| good	0.197 \| good

Timonium, Maryland live air quality index now

Major air pollutants in Timonium, Maryland

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Timonium, Maryland air quality map: Track AQI near you

Air quality in nearby cities

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Towson, Maryland

Cockeysville, Maryland

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Parkville, Maryland

Pikesville, Maryland

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Frequently asked questions

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

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

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

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

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

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

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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

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

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

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

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