What is the PM10 level in Lone Tree, Colorado at the moment?

The PM10 concentration in Lone Tree, Colorado is 18.201 μg/m3 at the moment.

What is the sulfur dioxide (SO2) level in Lone Tree, Colorado at the moment?

Currently, Lone Tree, Colorado has a sulfur dioxide (SO2) concentration of 1.491 ppb.

What is the ozone (O3) level in Lone Tree, Colorado at the moment?

The current ozone (O3) level in Lone Tree, Colorado at the moment is 24.684 ppm.

What is the nitrogen dioxide (NO2) level in Lone Tree, Colorado at the moment?

Nitrogen dioxide (NO2) level in Lone Tree, Colorado at the moment is 27.859 ppb.

Live air quality index in Lone Tree, Colorado today

Q: What is the PM2.5 level in Lone Tree, Colorado at the moment?

PM2.5 levels in Lone Tree, Colorado are currently 5.649 μg/m3.

Stay updated with real-time air quality in Lone Tree, Colorado 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

Lone Tree, Colorado

Last updated: ... (Local time)

Major air pollutants in Lone Tree, Colorado

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

5.65 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

18.20 μg/m³

155

255

425

605+

Ozone (O₃)

24.68 ppb

201

201+

Sulfur Dioxide (SO₂)

1.49 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

27.86 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.46 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

Lone Tree, Colorado

Get Live Pollen Counts

Lone Tree, Colorado

Scroll To Air Quality Map

Track live Lone Tree, Colorado air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-20T23:00:00.000Z	42 \| good	5.781 \| good	24.91 \| good	44.942 \| good	0.924 \| good	11.142 \| good	0.241 \| good
2026-10-21T00:00:00.000Z	42 \| good	4.661 \| good	22.732 \| good	44.513 \| good	0.869 \| good	11.331 \| good	0.195 \| good
2026-10-21T01:00:00.000Z	38 \| good	3.994 \| good	19.476 \| good	40.604 \| good	0.79 \| good	28.455 \| good	0.549 \| good
2026-10-21T02:00:00.000Z	42 \| good	4.333 \| good	18.869 \| good	32.414 \| good	1.045 \| good	44.264 \| good	0.848 \| good
2026-10-21T03:00:00.000Z	31 \| good	2.065 \| good	8.324 \| good	33.168 \| good	0.6 \| good	26.25 \| good	0.23 \| good
2026-10-21T04:00:00.000Z	35 \| good	5.484 \| good	22.127 \| good	28.596 \| good	0.999 \| good	37.149 \| good	0.7 \| good
2026-10-21T05:00:00.000Z	34 \| good	4.982 \| good	19.996 \| good	28.835 \| good	0.866 \| good	36.398 \| good	0.508 \| good
2026-10-21T06:00:00.000Z	33 \| good	5.574 \| good	16.264 \| good	29.839 \| good	1.161 \| good	30.592 \| good	0.533 \| good
2026-10-21T07:00:00.000Z	33 \| good	5.913 \| good	15.113 \| good	32.045 \| good	1.295 \| good	26.098 \| good	0.35 \| good
2026-10-21T08:00:00.000Z	29 \| good	5.195 \| good	20.647 \| good	30.598 \| good	0.991 \| good	22.45 \| good	0.317 \| good
2026-10-21T09:00:00.000Z	30 \| good	4.677 \| good	18.316 \| good	31.549 \| good	0.926 \| good	19.668 \| good	0.281 \| good
2026-10-21T10:00:00.000Z	28 \| good	5.149 \| good	19.263 \| good	30.39 \| good	0.901 \| good	21.265 \| good	0.323 \| good
2026-10-21T11:00:00.000Z	33 \| good	5.598 \| good	19.708 \| good	30.333 \| good	0.851 \| good	22.361 \| good	0.463 \| good
2026-10-21T12:00:00.000Z	33 \| good	6.293 \| good	26.134 \| good	31.429 \| good	0.813 \| good	21.06 \| good	0.56 \| good
2026-10-21T13:00:00.000Z	33 \| good	6.149 \| good	24.314 \| good	30.824 \| good	1.075 \| good	24.465 \| good	0.635 \| good
2026-10-21T14:00:00.000Z	33 \| good	6.29 \| good	27.682 \| good	28.482 \| good	1.467 \| good	27.172 \| good	0.514 \| good
2026-10-21T15:00:00.000Z	33 \| good	6.324 \| good	27.319 \| good	29.894 \| good	1.475 \| good	26.36 \| good	0.581 \| good
2026-10-21T16:00:00.000Z	33 \| good	6.228 \| good	26.911 \| good	29.089 \| good	1.636 \| good	23.14 \| good	0.445 \| good
2026-10-21T17:00:00.000Z	34 \| good	5.833 \| good	23.873 \| good	36.791 \| good	1.216 \| good	16.349 \| good	0.335 \| good
2026-10-21T18:00:00.000Z	36 \| good	5.237 \| good	21.321 \| good	39.322 \| good	1.176 \| good	14.133 \| good	0.335 \| good
2026-10-21T19:00:00.000Z	40 \| good	4.192 \| good	21.653 \| good	42.845 \| good	0.763 \| good	7.436 \| good	0.19 \| good
2026-10-21T20:00:00.000Z	43 \| good	3.827 \| good	20.619 \| good	45.956 \| good	0.711 \| good	7.712 \| good	0.183 \| good
2026-10-21T21:00:00.000Z	45 \| good	3.862 \| good	18.46 \| good	48.789 \| good	0.515 \| good	6.796 \| good	0.149 \| good
2026-10-21T22:00:00.000Z	46 \| good	3.448 \| good	15.072 \| good	50.281 \| good	0.511 \| good	7.82 \| good	0.205 \| good
2026-10-21T23:00:00.000Z	47 \| good	3.479 \| good	15.988 \| good	51.214 \| good	0.417 \| good	9.394 \| good	0.197 \| good
2026-10-22T00:00:00.000Z	44 \| good	3.241 \| good	15.24 \| good	46.569 \| good	0.78 \| good	12.649 \| good	0.261 \| good
2026-10-22T01:00:00.000Z	42 \| good	2.856 \| good	15.738 \| good	44.791 \| good	0.565 \| good	17.896 \| good	0.413 \| good
2026-10-22T02:00:00.000Z	37 \| good	2.619 \| good	12.615 \| good	39.765 \| good	0.35 \| good	13.963 \| good	0.353 \| good
2026-10-22T03:00:00.000Z	32 \| good	0.718 \| good	2.714 \| good	35.081 \| good	0.38 \| good	20.713 \| good	0.215 \| good
2026-10-22T04:00:00.000Z	35 \| good	1.639 \| good	6.566 \| good	37.621 \| good	0.899 \| good	9.222 \| good	0.306 \| good
2026-10-22T05:00:00.000Z	35 \| good	1.541 \| good	6.617 \| good	37.981 \| good	0.765 \| good	8.074 \| good	0.27 \| good
2026-10-22T06:00:00.000Z	33 \| good	1.356 \| good	5.645 \| good	35.662 \| good	0.6 \| good	7.994 \| good	0.195 \| good
2026-10-22T07:00:00.000Z	32 \| good	1.109 \| good	4.602 \| good	34.714 \| good	0.674 \| good	8.113 \| good	0.14 \| good
2026-10-22T08:00:00.000Z	31 \| good	0.941 \| good	3.963 \| good	33.984 \| good	0.584 \| good	9.417 \| good	0.141 \| good
2026-10-22T09:00:00.000Z	30 \| good	0.682 \| good	2.785 \| good	31.523 \| good	0.855 \| good	6.974 \| good	0.11 \| good
2026-10-22T10:00:00.000Z	29 \| good	0.808 \| good	3.513 \| good	31.427 \| good	0.663 \| good	11.056 \| good	0.179 \| good
2026-10-22T11:00:00.000Z	25 \| good	0.92 \| good	4.454 \| good	27.476 \| good	0.397 \| good	10.164 \| good	0.237 \| good
2026-10-22T12:00:00.000Z	25 \| good	1.599 \| good	7.397 \| good	27.164 \| good	0.615 \| good	16.541 \| good	0.237 \| good
2026-10-22T13:00:00.000Z	25 \| good	2.065 \| good	8.538 \| good	24.683 \| good	0.603 \| good	26.277 \| good	0.523 \| good
2026-10-22T14:00:00.000Z	26 \| good	2.733 \| good	12.336 \| good	20.305 \| good	0.678 \| good	27.534 \| good	0.454 \| good
2026-10-22T15:00:00.000Z	27 \| good	3.577 \| good	17.043 \| good	19.268 \| good	0.918 \| good	29.311 \| good	0.726 \| good
2026-10-22T16:00:00.000Z	32 \| good	4.566 \| good	20.96 \| good	18.904 \| good	1.305 \| good	33.975 \| good	0.574 \| good
2026-10-22T17:00:00.000Z	30 \| good	5.397 \| good	19.016 \| good	22.496 \| good	1.32 \| good	31.961 \| good	0.493 \| good
2026-10-22T18:00:00.000Z	27 \| good	4.726 \| good	20.047 \| good	25.415 \| good	1.24 \| good	23.85 \| good	0.364 \| good
2026-10-22T19:00:00.000Z	25 \| good	3.625 \| good	16.907 \| good	27.16 \| good	0.949 \| good	19.739 \| good	0.358 \| good
2026-10-22T20:00:00.000Z	24 \| good	3.034 \| good	11.814 \| good	24.908 \| good	1.086 \| good	24.787 \| good	0.398 \| good
2026-10-22T21:00:00.000Z	33 \| good	5.649 \| good	18.201 \| good	24.684 \| good	1.491 \| good	27.859 \| good	0.46 \| good
2026-10-22T22:00:00.000Z	33 \| good	5.649 \| good	18.201 \| good	24.684 \| good	1.491 \| good	27.859 \| good	0.46 \| good
2026-10-22T07:00:00.000Z	40 \| good	0.798 \| good	3.041 \| good	42.852 \| good	0.207 \| good	8.065 \| good	0.139 \| good
2026-10-22T08:00:00.000Z	39 \| good	0.682 \| good	2.636 \| good	41.907 \| good	0.189 \| good	6.468 \| good	0.132 \| good
2026-10-22T09:00:00.000Z	37 \| good	0.596 \| good	2.178 \| good	39.551 \| good	0.174 \| good	5.891 \| good	0.129 \| good
2026-10-22T10:00:00.000Z	32 \| good	0.523 \| good	1.874 \| good	34.798 \| good	0.162 \| good	6.032 \| good	0.129 \| good
2026-10-22T11:00:00.000Z	29 \| good	0.827 \| good	3.297 \| good	30.786 \| good	0.154 \| good	6.342 \| good	0.129 \| good
2026-10-22T12:00:00.000Z	27 \| good	1.094 \| good	4.368 \| good	29.098 \| good	0.15 \| good	7.01 \| good	0.131 \| good
2026-10-22T13:00:00.000Z	23 \| good	1.212 \| good	4.493 \| good	25.446 \| good	0.165 \| good	8.741 \| good	0.139 \| good
2026-10-22T14:00:00.000Z	25 \| good	1.929 \| good	8.118 \| good	26.931 \| good	0.206 \| good	10.546 \| good	0.16 \| good
2026-10-22T15:00:00.000Z	25 \| good	1.685 \| good	6.973 \| good	27.366 \| good	0.242 \| good	11.4 \| good	0.18 \| good
2026-10-22T16:00:00.000Z	26 \| good	1.018 \| good	4.12 \| good	27.951 \| good	0.264 \| good	11.161 \| good	0.186 \| good
2026-10-22T17:00:00.000Z	30 \| good	0.664 \| good	2.503 \| good	31.846 \| good	0.25 \| good	8.949 \| good	0.145 \| good
2026-10-22T18:00:00.000Z	30 \| good	0.792 \| good	2.927 \| good	32.047 \| good	0.305 \| good	6.968 \| good	0.126 \| good
2026-10-22T19:00:00.000Z	31 \| good	1.351 \| good	5.41 \| good	32.734 \| good	0.345 \| good	5.446 \| good	0.117 \| good
2026-10-22T20:00:00.000Z	31 \| good	1.647 \| good	6.616 \| good	33.837 \| good	0.354 \| good	3.968 \| good	0.109 \| good
2026-10-22T21:00:00.000Z	32 \| good	1.607 \| good	6.505 \| good	34.517 \| good	0.346 \| good	3.025 \| good	0.104 \| good
2026-10-22T22:00:00.000Z	31 \| good	1.33 \| good	5.391 \| good	32.891 \| good	0.341 \| good	2.408 \| good	0.102 \| good
2026-10-22T23:00:00.000Z	29 \| good	0.713 \| good	2.634 \| good	31.179 \| good	0.341 \| good	2.537 \| good	0.104 \| good
2026-10-23T00:00:00.000Z	28 \| good	1.177 \| good	4.73 \| good	30.048 \| good	0.364 \| good	6.464 \| good	0.128 \| good
2026-10-23T01:00:00.000Z	28 \| good	0.956 \| good	3.868 \| good	29.528 \| good	0.412 \| good	11.886 \| good	0.162 \| good
2026-10-23T02:00:00.000Z	28 \| good	0.876 \| good	3.481 \| good	29.852 \| good	0.445 \| good	13.177 \| good	0.18 \| good
2026-10-23T03:00:00.000Z	29 \| good	0.815 \| good	2.933 \| good	31.264 \| good	0.445 \| good	13.194 \| good	0.189 \| good
2026-10-23T04:00:00.000Z	24 \| good	0.744 \| good	2.667 \| good	26.355 \| good	0.401 \| good	12.499 \| good	0.177 \| good
2026-10-23T05:00:00.000Z	23 \| good	0.932 \| good	3.762 \| good	24.827 \| good	0.367 \| good	11.631 \| good	0.166 \| good
2026-10-23T06:00:00.000Z	23 \| good	1.42 \| good	5.591 \| good	25.375 \| good	0.327 \| good	10.238 \| good	0.154 \| good
2026-10-23T07:00:00.000Z	24 \| good	1.559 \| good	6.274 \| good	25.752 \| good	0.291 \| good	8.359 \| good	0.138 \| good
2026-10-23T08:00:00.000Z	24 \| good	1.567 \| good	6.274 \| good	26.262 \| good	0.279 \| good	5.677 \| good	0.125 \| good
2026-10-23T09:00:00.000Z	25 \| good	1.354 \| good	5.543 \| good	26.898 \| good	0.29 \| good	3.605 \| good	0.115 \| good
2026-10-23T10:00:00.000Z	25 \| good	1.156 \| good	4.51 \| good	26.951 \| good	0.299 \| good	2.386 \| good	0.11 \| good
2026-10-23T11:00:00.000Z	29 \| good	0.657 \| good	2.541 \| good	31.034 \| good	0.291 \| good	2.063 \| good	0.109 \| good
2026-10-23T12:00:00.000Z	30 \| good	0.934 \| good	3.591 \| good	31.844 \| good	0.271 \| good	2.106 \| good	0.109 \| good
2026-10-23T13:00:00.000Z	28 \| good	1.252 \| good	5.199 \| good	30.009 \| good	0.253 \| good	2.811 \| good	0.113 \| good
2026-10-23T14:00:00.000Z	26 \| good	1.77 \| good	7.039 \| good	28.179 \| good	0.246 \| good	3.757 \| good	0.12 \| good
2026-10-23T15:00:00.000Z	32 \| good	1.006 \| good	4.048 \| good	34.609 \| good	0.239 \| good	3.574 \| good	0.125 \| good
2026-10-23T16:00:00.000Z	35 \| good	0.641 \| good	2.349 \| good	38.278 \| good	0.227 \| good	2.381 \| good	0.119 \| good
2026-10-23T17:00:00.000Z	36 \| good	0.458 \| good	1.867 \| good	39.389 \| good	0.197 \| good	1.235 \| good	0.11 \| good
2026-10-23T18:00:00.000Z	37 \| good	1.008 \| good	4.145 \| good	39.635 \| good	0.173 \| good	0.795 \| good	0.105 \| good
2026-10-23T19:00:00.000Z	37 \| good	2.03 \| good	8.228 \| good	40.443 \| good	0.164 \| good	0.614 \| good	0.102 \| good
2026-10-23T20:00:00.000Z	42 \| good	2.086 \| good	8.67 \| good	45.448 \| good	0.159 \| good	0.551 \| good	0.101 \| good
2026-10-23T21:00:00.000Z	43 \| good	2.135 \| good	8.703 \| good	46.273 \| good	0.153 \| good	0.559 \| good	0.1 \| good
2026-10-23T22:00:00.000Z	40 \| good	1.673 \| good	6.993 \| good	43.378 \| good	0.15 \| good	0.636 \| good	0.1 \| good
2026-10-23T23:00:00.000Z	38 \| good	1.228 \| good	5.072 \| good	40.857 \| good	0.148 \| good	0.899 \| good	0.1 \| good
2026-10-24T00:00:00.000Z	36 \| good	1.658 \| good	6.61 \| good	38.84 \| good	0.159 \| good	2.578 \| good	0.109 \| good
2026-10-24T01:00:00.000Z	32 \| good	1.858 \| good	7.538 \| good	35.161 \| good	0.184 \| good	5.777 \| good	0.123 \| good
2026-10-24T02:00:00.000Z	38 \| good	0.706 \| good	2.715 \| good	40.992 \| good	0.203 \| good	8.059 \| good	0.131 \| good
2026-10-24T03:00:00.000Z	42 \| good	0.703 \| good	2.501 \| good	45.253 \| good	0.212 \| good	9.116 \| good	0.134 \| good
2026-10-24T04:00:00.000Z	40 \| good	0.557 \| good	2.086 \| good	43.205 \| good	0.22 \| good	10.282 \| good	0.138 \| good
2026-10-24T05:00:00.000Z	32 \| good	0.746 \| good	2.674 \| good	35.484 \| good	0.227 \| good	11.715 \| good	0.144 \| good
2026-10-24T06:00:00.000Z	28 \| good	1.744 \| good	7.216 \| good	29.924 \| good	0.219 \| good	12.297 \| good	0.15 \| good

Lone Tree

Get reliable air quality data to drive your business

Lone Tree, Colorado air quality map: Stay updated on AQI near you

0.46ppm

How accurate is Colorado, USA air quality data?

Air quality and pollutant data for Colorado, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for Lone Tree, Colorado?

The air quality information for Lone Tree, Colorado is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Lone Tree, Colorado at its worst?

In the past 24 hours, the air quality in Lone Tree, Colorado was at its worst at 11:00:00 on 2026-10-21.

When did Lone Tree, Colorado experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Lone Tree, Colorado was observed at 08:00:00 on 2026-10-22.

What is the AQI in Lone Tree, Colorado right now?

As of now, the AQI in Lone Tree, Colorado is 33, indicating Good conditions.

What is the most common type of pollution in Lone Tree, Colorado?

Lone Tree, Colorado air has the highest levels of PM2.5.

What should I do in case of poor air quality in Lone Tree, Colorado?

Poor air quality in Lone Tree, Colorado means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in Lone Tree, Colorado at the moment?

PM_2.5 levels in Lone Tree, Colorado are currently 5.649 μg/m³.

What is the PM₁₀ level in Lone Tree, Colorado at the moment?

The PM₁₀ concentration in Lone Tree, Colorado is 18.201 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Lone Tree, Colorado at the moment?

The current carbon monoxide (CO) concentration in Lone Tree, Colorado is 0.46 ppm.

What is the sulfur dioxide (SO₂) level in Lone Tree, Colorado at the moment?

Currently, Lone Tree, Colorado has a sulfur dioxide (SO₂) concentration of 1.491 ppb.

What is the ozone (O₃) level in Lone Tree, Colorado at the moment?

The current ozone (O₃) level in Lone Tree, Colorado at the moment is 24.684 ppm.

What is the nitrogen dioxide (NO₂) level in Lone Tree, Colorado at the moment?

Nitrogen dioxide (NO₂) level in Lone Tree, Colorado at the moment is 27.859 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-20T23:00:00.000Z	42 \| good	5.781 \| good	24.91 \| good	44.942 \| good	0.924 \| good	11.142 \| good	0.241 \| good
2026-10-21T00:00:00.000Z	42 \| good	4.661 \| good	22.732 \| good	44.513 \| good	0.869 \| good	11.331 \| good	0.195 \| good
2026-10-21T01:00:00.000Z	38 \| good	3.994 \| good	19.476 \| good	40.604 \| good	0.79 \| good	28.455 \| good	0.549 \| good
2026-10-21T02:00:00.000Z	42 \| good	4.333 \| good	18.869 \| good	32.414 \| good	1.045 \| good	44.264 \| good	0.848 \| good
2026-10-21T03:00:00.000Z	31 \| good	2.065 \| good	8.324 \| good	33.168 \| good	0.6 \| good	26.25 \| good	0.23 \| good
2026-10-21T04:00:00.000Z	35 \| good	5.484 \| good	22.127 \| good	28.596 \| good	0.999 \| good	37.149 \| good	0.7 \| good
2026-10-21T05:00:00.000Z	34 \| good	4.982 \| good	19.996 \| good	28.835 \| good	0.866 \| good	36.398 \| good	0.508 \| good
2026-10-21T06:00:00.000Z	33 \| good	5.574 \| good	16.264 \| good	29.839 \| good	1.161 \| good	30.592 \| good	0.533 \| good
2026-10-21T07:00:00.000Z	33 \| good	5.913 \| good	15.113 \| good	32.045 \| good	1.295 \| good	26.098 \| good	0.35 \| good
2026-10-21T08:00:00.000Z	29 \| good	5.195 \| good	20.647 \| good	30.598 \| good	0.991 \| good	22.45 \| good	0.317 \| good
2026-10-21T09:00:00.000Z	30 \| good	4.677 \| good	18.316 \| good	31.549 \| good	0.926 \| good	19.668 \| good	0.281 \| good
2026-10-21T10:00:00.000Z	28 \| good	5.149 \| good	19.263 \| good	30.39 \| good	0.901 \| good	21.265 \| good	0.323 \| good
2026-10-21T11:00:00.000Z	33 \| good	5.598 \| good	19.708 \| good	30.333 \| good	0.851 \| good	22.361 \| good	0.463 \| good
2026-10-21T12:00:00.000Z	33 \| good	6.293 \| good	26.134 \| good	31.429 \| good	0.813 \| good	21.06 \| good	0.56 \| good
2026-10-21T13:00:00.000Z	33 \| good	6.149 \| good	24.314 \| good	30.824 \| good	1.075 \| good	24.465 \| good	0.635 \| good
2026-10-21T14:00:00.000Z	33 \| good	6.29 \| good	27.682 \| good	28.482 \| good	1.467 \| good	27.172 \| good	0.514 \| good
2026-10-21T15:00:00.000Z	33 \| good	6.324 \| good	27.319 \| good	29.894 \| good	1.475 \| good	26.36 \| good	0.581 \| good
2026-10-21T16:00:00.000Z	33 \| good	6.228 \| good	26.911 \| good	29.089 \| good	1.636 \| good	23.14 \| good	0.445 \| good
2026-10-21T17:00:00.000Z	34 \| good	5.833 \| good	23.873 \| good	36.791 \| good	1.216 \| good	16.349 \| good	0.335 \| good
2026-10-21T18:00:00.000Z	36 \| good	5.237 \| good	21.321 \| good	39.322 \| good	1.176 \| good	14.133 \| good	0.335 \| good
2026-10-21T19:00:00.000Z	40 \| good	4.192 \| good	21.653 \| good	42.845 \| good	0.763 \| good	7.436 \| good	0.19 \| good
2026-10-21T20:00:00.000Z	43 \| good	3.827 \| good	20.619 \| good	45.956 \| good	0.711 \| good	7.712 \| good	0.183 \| good
2026-10-21T21:00:00.000Z	45 \| good	3.862 \| good	18.46 \| good	48.789 \| good	0.515 \| good	6.796 \| good	0.149 \| good
2026-10-21T22:00:00.000Z	46 \| good	3.448 \| good	15.072 \| good	50.281 \| good	0.511 \| good	7.82 \| good	0.205 \| good
2026-10-21T23:00:00.000Z	47 \| good	3.479 \| good	15.988 \| good	51.214 \| good	0.417 \| good	9.394 \| good	0.197 \| good
2026-10-22T00:00:00.000Z	44 \| good	3.241 \| good	15.24 \| good	46.569 \| good	0.78 \| good	12.649 \| good	0.261 \| good
2026-10-22T01:00:00.000Z	42 \| good	2.856 \| good	15.738 \| good	44.791 \| good	0.565 \| good	17.896 \| good	0.413 \| good
2026-10-22T02:00:00.000Z	37 \| good	2.619 \| good	12.615 \| good	39.765 \| good	0.35 \| good	13.963 \| good	0.353 \| good
2026-10-22T03:00:00.000Z	32 \| good	0.718 \| good	2.714 \| good	35.081 \| good	0.38 \| good	20.713 \| good	0.215 \| good
2026-10-22T04:00:00.000Z	35 \| good	1.639 \| good	6.566 \| good	37.621 \| good	0.899 \| good	9.222 \| good	0.306 \| good
2026-10-22T05:00:00.000Z	35 \| good	1.541 \| good	6.617 \| good	37.981 \| good	0.765 \| good	8.074 \| good	0.27 \| good
2026-10-22T06:00:00.000Z	33 \| good	1.356 \| good	5.645 \| good	35.662 \| good	0.6 \| good	7.994 \| good	0.195 \| good
2026-10-22T07:00:00.000Z	32 \| good	1.109 \| good	4.602 \| good	34.714 \| good	0.674 \| good	8.113 \| good	0.14 \| good
2026-10-22T08:00:00.000Z	31 \| good	0.941 \| good	3.963 \| good	33.984 \| good	0.584 \| good	9.417 \| good	0.141 \| good
2026-10-22T09:00:00.000Z	30 \| good	0.682 \| good	2.785 \| good	31.523 \| good	0.855 \| good	6.974 \| good	0.11 \| good
2026-10-22T10:00:00.000Z	29 \| good	0.808 \| good	3.513 \| good	31.427 \| good	0.663 \| good	11.056 \| good	0.179 \| good
2026-10-22T11:00:00.000Z	25 \| good	0.92 \| good	4.454 \| good	27.476 \| good	0.397 \| good	10.164 \| good	0.237 \| good
2026-10-22T12:00:00.000Z	25 \| good	1.599 \| good	7.397 \| good	27.164 \| good	0.615 \| good	16.541 \| good	0.237 \| good
2026-10-22T13:00:00.000Z	25 \| good	2.065 \| good	8.538 \| good	24.683 \| good	0.603 \| good	26.277 \| good	0.523 \| good
2026-10-22T14:00:00.000Z	26 \| good	2.733 \| good	12.336 \| good	20.305 \| good	0.678 \| good	27.534 \| good	0.454 \| good
2026-10-22T15:00:00.000Z	27 \| good	3.577 \| good	17.043 \| good	19.268 \| good	0.918 \| good	29.311 \| good	0.726 \| good
2026-10-22T16:00:00.000Z	32 \| good	4.566 \| good	20.96 \| good	18.904 \| good	1.305 \| good	33.975 \| good	0.574 \| good
2026-10-22T17:00:00.000Z	30 \| good	5.397 \| good	19.016 \| good	22.496 \| good	1.32 \| good	31.961 \| good	0.493 \| good
2026-10-22T18:00:00.000Z	27 \| good	4.726 \| good	20.047 \| good	25.415 \| good	1.24 \| good	23.85 \| good	0.364 \| good
2026-10-22T19:00:00.000Z	25 \| good	3.625 \| good	16.907 \| good	27.16 \| good	0.949 \| good	19.739 \| good	0.358 \| good
2026-10-22T20:00:00.000Z	24 \| good	3.034 \| good	11.814 \| good	24.908 \| good	1.086 \| good	24.787 \| good	0.398 \| good
2026-10-22T21:00:00.000Z	33 \| good	5.649 \| good	18.201 \| good	24.684 \| good	1.491 \| good	27.859 \| good	0.46 \| good
2026-10-22T22:00:00.000Z	33 \| good	5.649 \| good	18.201 \| good	24.684 \| good	1.491 \| good	27.859 \| good	0.46 \| good
2026-10-22T07:00:00.000Z	40 \| good	0.798 \| good	3.041 \| good	42.852 \| good	0.207 \| good	8.065 \| good	0.139 \| good
2026-10-22T08:00:00.000Z	39 \| good	0.682 \| good	2.636 \| good	41.907 \| good	0.189 \| good	6.468 \| good	0.132 \| good
2026-10-22T09:00:00.000Z	37 \| good	0.596 \| good	2.178 \| good	39.551 \| good	0.174 \| good	5.891 \| good	0.129 \| good
2026-10-22T10:00:00.000Z	32 \| good	0.523 \| good	1.874 \| good	34.798 \| good	0.162 \| good	6.032 \| good	0.129 \| good
2026-10-22T11:00:00.000Z	29 \| good	0.827 \| good	3.297 \| good	30.786 \| good	0.154 \| good	6.342 \| good	0.129 \| good
2026-10-22T12:00:00.000Z	27 \| good	1.094 \| good	4.368 \| good	29.098 \| good	0.15 \| good	7.01 \| good	0.131 \| good
2026-10-22T13:00:00.000Z	23 \| good	1.212 \| good	4.493 \| good	25.446 \| good	0.165 \| good	8.741 \| good	0.139 \| good
2026-10-22T14:00:00.000Z	25 \| good	1.929 \| good	8.118 \| good	26.931 \| good	0.206 \| good	10.546 \| good	0.16 \| good
2026-10-22T15:00:00.000Z	25 \| good	1.685 \| good	6.973 \| good	27.366 \| good	0.242 \| good	11.4 \| good	0.18 \| good
2026-10-22T16:00:00.000Z	26 \| good	1.018 \| good	4.12 \| good	27.951 \| good	0.264 \| good	11.161 \| good	0.186 \| good
2026-10-22T17:00:00.000Z	30 \| good	0.664 \| good	2.503 \| good	31.846 \| good	0.25 \| good	8.949 \| good	0.145 \| good
2026-10-22T18:00:00.000Z	30 \| good	0.792 \| good	2.927 \| good	32.047 \| good	0.305 \| good	6.968 \| good	0.126 \| good
2026-10-22T19:00:00.000Z	31 \| good	1.351 \| good	5.41 \| good	32.734 \| good	0.345 \| good	5.446 \| good	0.117 \| good
2026-10-22T20:00:00.000Z	31 \| good	1.647 \| good	6.616 \| good	33.837 \| good	0.354 \| good	3.968 \| good	0.109 \| good
2026-10-22T21:00:00.000Z	32 \| good	1.607 \| good	6.505 \| good	34.517 \| good	0.346 \| good	3.025 \| good	0.104 \| good
2026-10-22T22:00:00.000Z	31 \| good	1.33 \| good	5.391 \| good	32.891 \| good	0.341 \| good	2.408 \| good	0.102 \| good
2026-10-22T23:00:00.000Z	29 \| good	0.713 \| good	2.634 \| good	31.179 \| good	0.341 \| good	2.537 \| good	0.104 \| good
2026-10-23T00:00:00.000Z	28 \| good	1.177 \| good	4.73 \| good	30.048 \| good	0.364 \| good	6.464 \| good	0.128 \| good
2026-10-23T01:00:00.000Z	28 \| good	0.956 \| good	3.868 \| good	29.528 \| good	0.412 \| good	11.886 \| good	0.162 \| good
2026-10-23T02:00:00.000Z	28 \| good	0.876 \| good	3.481 \| good	29.852 \| good	0.445 \| good	13.177 \| good	0.18 \| good
2026-10-23T03:00:00.000Z	29 \| good	0.815 \| good	2.933 \| good	31.264 \| good	0.445 \| good	13.194 \| good	0.189 \| good
2026-10-23T04:00:00.000Z	24 \| good	0.744 \| good	2.667 \| good	26.355 \| good	0.401 \| good	12.499 \| good	0.177 \| good
2026-10-23T05:00:00.000Z	23 \| good	0.932 \| good	3.762 \| good	24.827 \| good	0.367 \| good	11.631 \| good	0.166 \| good
2026-10-23T06:00:00.000Z	23 \| good	1.42 \| good	5.591 \| good	25.375 \| good	0.327 \| good	10.238 \| good	0.154 \| good
2026-10-23T07:00:00.000Z	24 \| good	1.559 \| good	6.274 \| good	25.752 \| good	0.291 \| good	8.359 \| good	0.138 \| good
2026-10-23T08:00:00.000Z	24 \| good	1.567 \| good	6.274 \| good	26.262 \| good	0.279 \| good	5.677 \| good	0.125 \| good
2026-10-23T09:00:00.000Z	25 \| good	1.354 \| good	5.543 \| good	26.898 \| good	0.29 \| good	3.605 \| good	0.115 \| good
2026-10-23T10:00:00.000Z	25 \| good	1.156 \| good	4.51 \| good	26.951 \| good	0.299 \| good	2.386 \| good	0.11 \| good
2026-10-23T11:00:00.000Z	29 \| good	0.657 \| good	2.541 \| good	31.034 \| good	0.291 \| good	2.063 \| good	0.109 \| good
2026-10-23T12:00:00.000Z	30 \| good	0.934 \| good	3.591 \| good	31.844 \| good	0.271 \| good	2.106 \| good	0.109 \| good
2026-10-23T13:00:00.000Z	28 \| good	1.252 \| good	5.199 \| good	30.009 \| good	0.253 \| good	2.811 \| good	0.113 \| good
2026-10-23T14:00:00.000Z	26 \| good	1.77 \| good	7.039 \| good	28.179 \| good	0.246 \| good	3.757 \| good	0.12 \| good
2026-10-23T15:00:00.000Z	32 \| good	1.006 \| good	4.048 \| good	34.609 \| good	0.239 \| good	3.574 \| good	0.125 \| good
2026-10-23T16:00:00.000Z	35 \| good	0.641 \| good	2.349 \| good	38.278 \| good	0.227 \| good	2.381 \| good	0.119 \| good
2026-10-23T17:00:00.000Z	36 \| good	0.458 \| good	1.867 \| good	39.389 \| good	0.197 \| good	1.235 \| good	0.11 \| good
2026-10-23T18:00:00.000Z	37 \| good	1.008 \| good	4.145 \| good	39.635 \| good	0.173 \| good	0.795 \| good	0.105 \| good
2026-10-23T19:00:00.000Z	37 \| good	2.03 \| good	8.228 \| good	40.443 \| good	0.164 \| good	0.614 \| good	0.102 \| good
2026-10-23T20:00:00.000Z	42 \| good	2.086 \| good	8.67 \| good	45.448 \| good	0.159 \| good	0.551 \| good	0.101 \| good
2026-10-23T21:00:00.000Z	43 \| good	2.135 \| good	8.703 \| good	46.273 \| good	0.153 \| good	0.559 \| good	0.1 \| good
2026-10-23T22:00:00.000Z	40 \| good	1.673 \| good	6.993 \| good	43.378 \| good	0.15 \| good	0.636 \| good	0.1 \| good
2026-10-23T23:00:00.000Z	38 \| good	1.228 \| good	5.072 \| good	40.857 \| good	0.148 \| good	0.899 \| good	0.1 \| good
2026-10-24T00:00:00.000Z	36 \| good	1.658 \| good	6.61 \| good	38.84 \| good	0.159 \| good	2.578 \| good	0.109 \| good
2026-10-24T01:00:00.000Z	32 \| good	1.858 \| good	7.538 \| good	35.161 \| good	0.184 \| good	5.777 \| good	0.123 \| good
2026-10-24T02:00:00.000Z	38 \| good	0.706 \| good	2.715 \| good	40.992 \| good	0.203 \| good	8.059 \| good	0.131 \| good
2026-10-24T03:00:00.000Z	42 \| good	0.703 \| good	2.501 \| good	45.253 \| good	0.212 \| good	9.116 \| good	0.134 \| good
2026-10-24T04:00:00.000Z	40 \| good	0.557 \| good	2.086 \| good	43.205 \| good	0.22 \| good	10.282 \| good	0.138 \| good
2026-10-24T05:00:00.000Z	32 \| good	0.746 \| good	2.674 \| good	35.484 \| good	0.227 \| good	11.715 \| good	0.144 \| good
2026-10-24T06:00:00.000Z	28 \| good	1.744 \| good	7.216 \| good	29.924 \| good	0.219 \| good	12.297 \| good	0.15 \| good

Live air quality index in Lone Tree, Colorado today

Major air pollutants in Lone Tree, Colorado

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Lone Tree, Colorado air quality map: Stay updated on AQI near you

Air quality in nearby cities

Centennial, Colorado

Castle Pines, Colorado

Highlands Ranch, Colorado

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Parker, Colorado

Littleton, Colorado

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Frequently asked questions

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What is the PM2.5 level in Lone Tree, Colorado at the moment?

What is the PM10 level in Lone Tree, Colorado at the moment?

What is the carbon monoxide (CO) level in Lone Tree, Colorado at the moment?

What is the sulfur dioxide (SO2) level in Lone Tree, Colorado at the moment?

What is the ozone (O3) level in Lone Tree, Colorado at the moment?

What is the nitrogen dioxide (NO2) level in Lone Tree, Colorado at the moment?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 level in Lone Tree, Colorado at the moment?

What is the PM₁₀ level in Lone Tree, Colorado at the moment?

What is the sulfur dioxide (SO₂) level in Lone Tree, Colorado at the moment?

What is the ozone (O₃) level in Lone Tree, Colorado at the moment?

What is the nitrogen dioxide (NO₂) level in Lone Tree, Colorado at the moment?