What is the current concentration of PM10 in Castle Pines, Colorado?

The current PM10 concentration at Castle Pines, Colorado is 12.194 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Castle Pines, Colorado?

The current sulfur dioxide (SO2) concentration at Castle Pines, Colorado is 1.086 ppb.

What is the current concentration of ozone (O3) in Castle Pines, Colorado?

The current ozone (O3) concentration at Castle Pines, Colorado is 25.285 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Castle Pines, Colorado?

The current nitrogen dioxide (NO2) concentration at Castle Pines, Colorado is 24.72 ppb.

Castle Pines, Colorado live air quality index now

Q: What is the current concentration of PM2.5 in Castle Pines, Colorado?

The current PM2.5 concentration at Castle Pines, Colorado is 3.083 μg/m3.

Stay updated with real-time air quality in Castle Pines, 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

Castle Pines, Colorado

Last updated: ... (Local time)

Major air pollutants in Castle Pines, Colorado

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

3.08 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

12.19 μg/m³

155

255

425

605+

Ozone (O₃)

25.29 ppb

201

201+

Sulfur Dioxide (SO₂)

1.09 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

24.72 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.40 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

Castle Pines, Colorado

Get Live Pollen Counts

Castle Pines, Colorado

Scroll To Air Quality Map

Track live Castle Pines, Colorado air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-20T22:00:00.000Z	44 \| good	7.159 \| good	30.198 \| good	47.056 \| good	1.016 \| good	10.248 \| good	0.213 \| good
2026-10-20T23:00:00.000Z	44 \| good	5.469 \| good	19.953 \| good	46.652 \| good	0.882 \| good	10.575 \| good	0.221 \| good
2026-10-21T00:00:00.000Z	41 \| good	3.116 \| good	16.895 \| good	43.964 \| good	0.819 \| good	5.863 \| good	0.19 \| good
2026-10-21T01:00:00.000Z	42 \| good	2.535 \| good	13.514 \| good	45.017 \| good	0.727 \| good	11.598 \| good	0.486 \| good
2026-10-21T02:00:00.000Z	38 \| good	2.954 \| good	11.755 \| good	40.704 \| good	0.955 \| good	14.776 \| good	0.711 \| good
2026-10-21T03:00:00.000Z	38 \| good	1.489 \| good	5.942 \| good	41.013 \| good	0.476 \| good	16.03 \| good	0.187 \| good
2026-10-21T04:00:00.000Z	32 \| good	3.734 \| good	12.378 \| good	34.874 \| good	0.944 \| good	11.172 \| good	0.579 \| good
2026-10-21T05:00:00.000Z	32 \| good	3.959 \| good	16.278 \| good	35.485 \| good	0.795 \| good	12.647 \| good	0.44 \| good
2026-10-21T06:00:00.000Z	31 \| good	4.313 \| good	17.351 \| good	34.391 \| good	1.032 \| good	15.27 \| good	0.48 \| good
2026-10-21T07:00:00.000Z	33 \| good	4.511 \| good	13.117 \| good	35.711 \| good	1.182 \| good	15.066 \| good	0.333 \| good
2026-10-21T08:00:00.000Z	33 \| good	4.286 \| good	17.454 \| good	36.095 \| good	0.943 \| good	12.851 \| good	0.301 \| good
2026-10-21T09:00:00.000Z	32 \| good	4.238 \| good	16.579 \| good	35.152 \| good	0.877 \| good	12.979 \| good	0.266 \| good
2026-10-21T10:00:00.000Z	30 \| good	5.011 \| good	12.593 \| good	32.394 \| good	0.827 \| good	15.597 \| good	0.29 \| good
2026-10-21T11:00:00.000Z	33 \| good	5.745 \| good	6.452 \| good	31.438 \| good	0.788 \| good	16.435 \| good	0.41 \| good
2026-10-21T12:00:00.000Z	33 \| good	6.39 \| good	8.443 \| good	30.974 \| good	0.778 \| good	8.184 \| good	0.482 \| good
2026-10-21T13:00:00.000Z	33 \| good	3.242 \| good	11.796 \| good	35.527 \| good	1.06 \| good	12.295 \| good	0.559 \| good
2026-10-21T14:00:00.000Z	30 \| good	4.322 \| good	11.789 \| good	31.588 \| good	1.489 \| good	12.933 \| good	0.495 \| good
2026-10-21T15:00:00.000Z	33 \| good	6.162 \| good	15.674 \| good	33.045 \| good	1.515 \| good	13.831 \| good	0.515 \| good
2026-10-21T16:00:00.000Z	33 \| good	6.347 \| good	27.307 \| good	34.221 \| good	1.534 \| good	10.697 \| good	0.402 \| good
2026-10-21T17:00:00.000Z	35 \| good	5.563 \| good	23.418 \| good	38.125 \| good	1.165 \| good	10.105 \| good	0.307 \| good
2026-10-21T18:00:00.000Z	31 \| good	5.152 \| good	21.65 \| good	32.681 \| good	1.188 \| good	11.225 \| good	0.307 \| good
2026-10-21T19:00:00.000Z	40 \| good	4.471 \| good	22.346 \| good	42.863 \| good	0.747 \| good	6.887 \| good	0.181 \| good
2026-10-21T20:00:00.000Z	42 \| good	3.53 \| good	18.88 \| good	45.405 \| good	0.67 \| good	7.719 \| good	0.169 \| good
2026-10-21T21:00:00.000Z	43 \| good	2.942 \| good	13.495 \| good	46.421 \| good	0.462 \| good	6.803 \| good	0.136 \| good
2026-10-21T22:00:00.000Z	42 \| good	3.832 \| good	18.185 \| good	45.154 \| good	0.457 \| good	7.324 \| good	0.184 \| good
2026-10-21T23:00:00.000Z	47 \| good	3.186 \| good	12.005 \| good	51.434 \| good	0.378 \| good	9.086 \| good	0.193 \| good
2026-10-22T00:00:00.000Z	44 \| good	3.45 \| good	6.907 \| good	47.091 \| good	0.75 \| good	6.86 \| good	0.256 \| good
2026-10-22T01:00:00.000Z	42 \| good	2.948 \| good	17.686 \| good	44.596 \| good	0.569 \| good	8.255 \| good	0.374 \| good
2026-10-22T02:00:00.000Z	37 \| good	2.618 \| good	7.313 \| good	39.797 \| good	0.316 \| good	8.692 \| good	0.344 \| good
2026-10-22T03:00:00.000Z	35 \| good	1.075 \| good	4.77 \| good	37.797 \| good	0.255 \| good	11.391 \| good	0.165 \| good
2026-10-22T04:00:00.000Z	34 \| good	1.403 \| good	6.445 \| good	36.826 \| good	0.842 \| good	7.053 \| good	0.312 \| good
2026-10-22T05:00:00.000Z	34 \| good	1.379 \| good	6.348 \| good	36.792 \| good	0.752 \| good	7.952 \| good	0.27 \| good
2026-10-22T06:00:00.000Z	32 \| good	1.2 \| good	5.007 \| good	35.135 \| good	0.548 \| good	9.284 \| good	0.19 \| good
2026-10-22T07:00:00.000Z	32 \| good	1.284 \| good	4.604 \| good	35.198 \| good	0.655 \| good	5.286 \| good	0.143 \| good
2026-10-22T08:00:00.000Z	31 \| good	0.673 \| good	3.015 \| good	33.482 \| good	0.581 \| good	7.055 \| good	0.145 \| good
2026-10-22T09:00:00.000Z	31 \| good	0.523 \| good	3.134 \| good	32.877 \| good	0.862 \| good	6.958 \| good	0.116 \| good
2026-10-22T10:00:00.000Z	30 \| good	0.837 \| good	2.882 \| good	32.245 \| good	0.59 \| good	9.965 \| good	0.164 \| good
2026-10-22T11:00:00.000Z	29 \| good	0.643 \| good	3.081 \| good	31.328 \| good	0.42 \| good	9.62 \| good	0.196 \| good
2026-10-22T12:00:00.000Z	30 \| good	1.111 \| good	5.58 \| good	31.878 \| good	0.569 \| good	15.65 \| good	0.196 \| good
2026-10-22T13:00:00.000Z	31 \| good	1.404 \| good	5.587 \| good	33.806 \| good	0.543 \| good	22.466 \| good	0.406 \| good
2026-10-22T14:00:00.000Z	25 \| good	2.017 \| good	6.748 \| good	26.817 \| good	0.651 \| good	24.303 \| good	0.394 \| good
2026-10-22T15:00:00.000Z	23 \| good	2.186 \| good	8.992 \| good	24.676 \| good	0.895 \| good	16.712 \| good	0.622 \| good
2026-10-22T16:00:00.000Z	21 \| good	3.218 \| good	10.086 \| good	23.345 \| good	1.188 \| good	19.326 \| good	0.503 \| good
2026-10-22T17:00:00.000Z	22 \| good	3.828 \| good	20.6 \| good	22.565 \| good	1.282 \| good	16.722 \| good	0.437 \| good
2026-10-22T18:00:00.000Z	25 \| good	4.018 \| good	15.118 \| good	26.888 \| good	1.143 \| good	14.782 \| good	0.336 \| good
2026-10-22T19:00:00.000Z	27 \| good	3.266 \| good	13.575 \| good	28.976 \| good	0.886 \| good	15.052 \| good	0.324 \| good
2026-10-22T20:00:00.000Z	28 \| good	2.778 \| good	11.708 \| good	29.895 \| good	1.04 \| good	23.223 \| good	0.345 \| good
2026-10-22T21:00:00.000Z	24 \| good	3.083 \| good	12.194 \| good	25.285 \| good	1.086 \| good	24.72 \| good	0.397 \| good
2026-10-22T22:00:00.000Z	36 \| good	0.366 \| good	1.321 \| good	38.811 \| good	0.311 \| good	1.086 \| good	0.098 \| good
2026-10-22T23:00:00.000Z	37 \| good	0.374 \| good	1.251 \| good	39.786 \| good	0.302 \| good	1.267 \| good	0.101 \| good
2026-10-23T00:00:00.000Z	36 \| good	0.392 \| good	1.336 \| good	38.547 \| good	0.305 \| good	3.943 \| good	0.119 \| good
2026-10-23T01:00:00.000Z	31 \| good	0.365 \| good	1.274 \| good	34.122 \| good	0.333 \| good	8.063 \| good	0.148 \| good
2026-10-23T02:00:00.000Z	34 \| good	0.298 \| good	1 \| good	37.452 \| good	0.337 \| good	8.331 \| good	0.155 \| good
2026-10-23T03:00:00.000Z	38 \| good	0.236 \| good	1 \| good	41.019 \| good	0.316 \| good	8.205 \| good	0.15 \| good
2026-10-23T04:00:00.000Z	37 \| good	0.246 \| good	1 \| good	40.454 \| good	0.301 \| good	7.952 \| good	0.145 \| good
2026-10-23T05:00:00.000Z	35 \| good	0.264 \| good	1 \| good	37.97 \| good	0.29 \| good	7.415 \| good	0.141 \| good
2026-10-23T06:00:00.000Z	35 \| good	0.265 \| good	1 \| good	37.823 \| good	0.274 \| good	6.381 \| good	0.134 \| good
2026-10-23T07:00:00.000Z	32 \| good	0.275 \| good	1 \| good	34.71 \| good	0.26 \| good	4.947 \| good	0.126 \| good
2026-10-23T08:00:00.000Z	30 \| good	0.299 \| good	1 \| good	32.051 \| good	0.256 \| good	3.563 \| good	0.118 \| good
2026-10-23T09:00:00.000Z	30 \| good	0.3 \| good	1 \| good	31.646 \| good	0.25 \| good	2.504 \| good	0.112 \| good
2026-10-23T10:00:00.000Z	31 \| good	0.578 \| good	2 \| good	32.705 \| good	0.24 \| good	2.001 \| good	0.11 \| good
2026-10-23T11:00:00.000Z	30 \| good	0.329 \| good	1 \| good	32.485 \| good	0.23 \| good	1.807 \| good	0.11 \| good
2026-10-23T12:00:00.000Z	31 \| good	0.729 \| good	2.834 \| good	33.662 \| good	0.22 \| good	1.799 \| good	0.111 \| good
2026-10-23T13:00:00.000Z	31 \| good	0.764 \| good	2.867 \| good	33.01 \| good	0.216 \| good	2.271 \| good	0.115 \| good
2026-10-23T14:00:00.000Z	30 \| good	1.079 \| good	4.631 \| good	32.214 \| good	0.219 \| good	2.952 \| good	0.122 \| good
2026-10-23T15:00:00.000Z	33 \| good	1.116 \| good	4.629 \| good	35.997 \| good	0.212 \| good	2.55 \| good	0.124 \| good
2026-10-23T16:00:00.000Z	39 \| good	0.458 \| good	1.798 \| good	42.114 \| good	0.194 \| good	1.606 \| good	0.117 \| good
2026-10-23T17:00:00.000Z	43 \| good	0.29 \| good	0.999 \| good	46.246 \| good	0.169 \| good	0.867 \| good	0.109 \| good
2026-10-23T18:00:00.000Z	45 \| good	0.228 \| good	0.915 \| good	48.904 \| good	0.146 \| good	0.542 \| good	0.104 \| good
2026-10-23T19:00:00.000Z	47 \| good	0.549 \| good	2 \| good	50.77 \| good	0.134 \| good	0.423 \| good	0.101 \| good
2026-10-23T20:00:00.000Z	47 \| good	1.021 \| good	4.057 \| good	51.418 \| good	0.125 \| good	0.38 \| good	0.1 \| good
2026-10-23T21:00:00.000Z	48 \| good	1.086 \| good	4.336 \| good	51.558 \| good	0.116 \| good	0.383 \| good	0.098 \| good
2026-10-23T22:00:00.000Z	47 \| good	0.862 \| good	3.336 \| good	51.429 \| good	0.11 \| good	0.435 \| good	0.097 \| good
2026-10-23T23:00:00.000Z	45 \| good	0.399 \| good	1.371 \| good	49.19 \| good	0.109 \| good	0.594 \| good	0.097 \| good
2026-10-24T00:00:00.000Z	41 \| good	0.439 \| good	1.834 \| good	43.616 \| good	0.124 \| good	2.284 \| good	0.107 \| good
2026-10-24T01:00:00.000Z	35 \| good	0.433 \| good	1.834 \| good	38.18 \| good	0.158 \| good	5.819 \| good	0.125 \| good
2026-10-24T02:00:00.000Z	36 \| good	0.43 \| good	1.882 \| good	39.052 \| good	0.181 \| good	7.775 \| good	0.137 \| good
2026-10-24T03:00:00.000Z	35 \| good	0.405 \| good	1.772 \| good	37.594 \| good	0.191 \| good	8.331 \| good	0.141 \| good
2026-10-24T04:00:00.000Z	36 \| good	0.371 \| good	1.274 \| good	39.322 \| good	0.195 \| good	8.551 \| good	0.143 \| good
2026-10-24T05:00:00.000Z	35 \| good	0.398 \| good	1.336 \| good	38.315 \| good	0.197 \| good	9.055 \| good	0.147 \| good
2026-10-24T06:00:00.000Z	33 \| good	0.6 \| good	2.258 \| good	36.199 \| good	0.188 \| good	9.042 \| good	0.151 \| good
2026-10-24T07:00:00.000Z	29 \| good	1.946 \| good	7.9 \| good	31.193 \| good	0.173 \| good	8.499 \| good	0.15 \| good
2026-10-24T08:00:00.000Z	28 \| good	5.178 \| good	22.81 \| good	29.752 \| good	0.162 \| good	8.342 \| good	0.145 \| good
2026-10-24T09:00:00.000Z	49 \| good	8.733 \| good	38.322 \| good	29.293 \| good	0.155 \| good	8.917 \| good	0.144 \| good
2026-10-24T10:00:00.000Z	54 \| moderate	11.126 \| good	49.623 \| good	28.136 \| good	0.152 \| good	9.026 \| good	0.145 \| good
2026-10-24T11:00:00.000Z	64 \| moderate	15.786 \| fine	70.663 \| fine	30.174 \| good	0.17 \| good	8.21 \| good	0.139 \| good
2026-10-24T12:00:00.000Z	67 \| moderate	18.087 \| fine	80.279 \| fine	32.516 \| good	0.194 \| good	7.4 \| good	0.135 \| good
2026-10-24T13:00:00.000Z	64 \| moderate	16.041 \| fine	71.671 \| fine	33.879 \| good	0.207 \| good	6.602 \| good	0.134 \| good
2026-10-24T14:00:00.000Z	52 \| moderate	10.393 \| good	46.304 \| good	35.252 \| good	0.225 \| good	6.502 \| good	0.137 \| good
2026-10-24T15:00:00.000Z	38 \| good	6.537 \| good	28.994 \| good	37.793 \| good	0.231 \| good	2.829 \| good	0.124 \| good
2026-10-24T16:00:00.000Z	36 \| good	5.714 \| good	24.849 \| good	38.922 \| good	0.288 \| good	2.147 \| good	0.126 \| good
2026-10-24T17:00:00.000Z	34 \| good	5.156 \| good	22.297 \| good	37.314 \| good	0.36 \| good	1.93 \| good	0.13 \| good
2026-10-24T18:00:00.000Z	37 \| good	3.612 \| good	15.926 \| good	39.705 \| good	0.422 \| good	1.709 \| good	0.133 \| good
2026-10-24T19:00:00.000Z	40 \| good	2.24 \| good	9.229 \| good	42.663 \| good	0.472 \| good	1.67 \| good	0.136 \| good
2026-10-24T20:00:00.000Z	40 \| good	1.133 \| good	4.569 \| good	43.174 \| good	0.503 \| good	1.657 \| good	0.137 \| good
2026-10-24T21:00:00.000Z	41 \| good	1.336 \| good	5.621 \| good	44.475 \| good	0.511 \| good	1.672 \| good	0.138 \| good

Castle Pines

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Castle Pines, Colorado air quality map: Track AQI near you

0.34ppm

How accurate is Colorado, USA air quality data?

Air quality data and pollutant measurements for Colorado, 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 Castle Pines, Colorado updated?

The air quality for Castle Pines, Colorado is updated every hour.

When was the worst air quality at Castle Pines, Colorado in the last 24 hrs?

The worst air quality in Castle Pines, Colorado in the last 24 hours was observed at 11:00:00 on 2026-10-21.

When was the best air quality at Castle Pines, Colorado in the last 24 hrs?

In the last 24 hrs, the best air quality in Castle Pines, Colorado was observed at 04:00:00 on 2026-10-22.

What is the current air quality in Castle Pines, Colorado?

The current air quality in Castle Pines, Colorado is 24, categorized as Good based on real-time data.

What pollutant is the most common in Castle Pines, Colorado?

The most common pollutant in Castle Pines, Colorado is NO2.

What should I do if the air quality in Castle Pines, Colorado is poor?

If the air quality in Castle Pines, Colorado is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Castle Pines, Colorado?

The current PM_2.5 concentration at Castle Pines, Colorado is 3.083 μg/m³.

What is the current concentration of PM₁₀ in Castle Pines, Colorado?

The current PM₁₀ concentration at Castle Pines, Colorado is 12.194 μg/m³.

What is the current concentration of carbon monoxide (CO) in Castle Pines, Colorado?

The current carbon monoxide (CO) concentration at Castle Pines, Colorado is 0.397 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Castle Pines, Colorado?

The current sulfur dioxide (SO₂) concentration at Castle Pines, Colorado is 1.086 ppb.

What is the current concentration of ozone (O₃) in Castle Pines, Colorado?

The current ozone (O₃) concentration at Castle Pines, Colorado is 25.285 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Castle Pines, Colorado?

The current nitrogen dioxide (NO₂) concentration at Castle Pines, Colorado is 24.72 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-20T22:00:00.000Z	44 \| good	7.159 \| good	30.198 \| good	47.056 \| good	1.016 \| good	10.248 \| good	0.213 \| good
2026-10-20T23:00:00.000Z	44 \| good	5.469 \| good	19.953 \| good	46.652 \| good	0.882 \| good	10.575 \| good	0.221 \| good
2026-10-21T00:00:00.000Z	41 \| good	3.116 \| good	16.895 \| good	43.964 \| good	0.819 \| good	5.863 \| good	0.19 \| good
2026-10-21T01:00:00.000Z	42 \| good	2.535 \| good	13.514 \| good	45.017 \| good	0.727 \| good	11.598 \| good	0.486 \| good
2026-10-21T02:00:00.000Z	38 \| good	2.954 \| good	11.755 \| good	40.704 \| good	0.955 \| good	14.776 \| good	0.711 \| good
2026-10-21T03:00:00.000Z	38 \| good	1.489 \| good	5.942 \| good	41.013 \| good	0.476 \| good	16.03 \| good	0.187 \| good
2026-10-21T04:00:00.000Z	32 \| good	3.734 \| good	12.378 \| good	34.874 \| good	0.944 \| good	11.172 \| good	0.579 \| good
2026-10-21T05:00:00.000Z	32 \| good	3.959 \| good	16.278 \| good	35.485 \| good	0.795 \| good	12.647 \| good	0.44 \| good
2026-10-21T06:00:00.000Z	31 \| good	4.313 \| good	17.351 \| good	34.391 \| good	1.032 \| good	15.27 \| good	0.48 \| good
2026-10-21T07:00:00.000Z	33 \| good	4.511 \| good	13.117 \| good	35.711 \| good	1.182 \| good	15.066 \| good	0.333 \| good
2026-10-21T08:00:00.000Z	33 \| good	4.286 \| good	17.454 \| good	36.095 \| good	0.943 \| good	12.851 \| good	0.301 \| good
2026-10-21T09:00:00.000Z	32 \| good	4.238 \| good	16.579 \| good	35.152 \| good	0.877 \| good	12.979 \| good	0.266 \| good
2026-10-21T10:00:00.000Z	30 \| good	5.011 \| good	12.593 \| good	32.394 \| good	0.827 \| good	15.597 \| good	0.29 \| good
2026-10-21T11:00:00.000Z	33 \| good	5.745 \| good	6.452 \| good	31.438 \| good	0.788 \| good	16.435 \| good	0.41 \| good
2026-10-21T12:00:00.000Z	33 \| good	6.39 \| good	8.443 \| good	30.974 \| good	0.778 \| good	8.184 \| good	0.482 \| good
2026-10-21T13:00:00.000Z	33 \| good	3.242 \| good	11.796 \| good	35.527 \| good	1.06 \| good	12.295 \| good	0.559 \| good
2026-10-21T14:00:00.000Z	30 \| good	4.322 \| good	11.789 \| good	31.588 \| good	1.489 \| good	12.933 \| good	0.495 \| good
2026-10-21T15:00:00.000Z	33 \| good	6.162 \| good	15.674 \| good	33.045 \| good	1.515 \| good	13.831 \| good	0.515 \| good
2026-10-21T16:00:00.000Z	33 \| good	6.347 \| good	27.307 \| good	34.221 \| good	1.534 \| good	10.697 \| good	0.402 \| good
2026-10-21T17:00:00.000Z	35 \| good	5.563 \| good	23.418 \| good	38.125 \| good	1.165 \| good	10.105 \| good	0.307 \| good
2026-10-21T18:00:00.000Z	31 \| good	5.152 \| good	21.65 \| good	32.681 \| good	1.188 \| good	11.225 \| good	0.307 \| good
2026-10-21T19:00:00.000Z	40 \| good	4.471 \| good	22.346 \| good	42.863 \| good	0.747 \| good	6.887 \| good	0.181 \| good
2026-10-21T20:00:00.000Z	42 \| good	3.53 \| good	18.88 \| good	45.405 \| good	0.67 \| good	7.719 \| good	0.169 \| good
2026-10-21T21:00:00.000Z	43 \| good	2.942 \| good	13.495 \| good	46.421 \| good	0.462 \| good	6.803 \| good	0.136 \| good
2026-10-21T22:00:00.000Z	42 \| good	3.832 \| good	18.185 \| good	45.154 \| good	0.457 \| good	7.324 \| good	0.184 \| good
2026-10-21T23:00:00.000Z	47 \| good	3.186 \| good	12.005 \| good	51.434 \| good	0.378 \| good	9.086 \| good	0.193 \| good
2026-10-22T00:00:00.000Z	44 \| good	3.45 \| good	6.907 \| good	47.091 \| good	0.75 \| good	6.86 \| good	0.256 \| good
2026-10-22T01:00:00.000Z	42 \| good	2.948 \| good	17.686 \| good	44.596 \| good	0.569 \| good	8.255 \| good	0.374 \| good
2026-10-22T02:00:00.000Z	37 \| good	2.618 \| good	7.313 \| good	39.797 \| good	0.316 \| good	8.692 \| good	0.344 \| good
2026-10-22T03:00:00.000Z	35 \| good	1.075 \| good	4.77 \| good	37.797 \| good	0.255 \| good	11.391 \| good	0.165 \| good
2026-10-22T04:00:00.000Z	34 \| good	1.403 \| good	6.445 \| good	36.826 \| good	0.842 \| good	7.053 \| good	0.312 \| good
2026-10-22T05:00:00.000Z	34 \| good	1.379 \| good	6.348 \| good	36.792 \| good	0.752 \| good	7.952 \| good	0.27 \| good
2026-10-22T06:00:00.000Z	32 \| good	1.2 \| good	5.007 \| good	35.135 \| good	0.548 \| good	9.284 \| good	0.19 \| good
2026-10-22T07:00:00.000Z	32 \| good	1.284 \| good	4.604 \| good	35.198 \| good	0.655 \| good	5.286 \| good	0.143 \| good
2026-10-22T08:00:00.000Z	31 \| good	0.673 \| good	3.015 \| good	33.482 \| good	0.581 \| good	7.055 \| good	0.145 \| good
2026-10-22T09:00:00.000Z	31 \| good	0.523 \| good	3.134 \| good	32.877 \| good	0.862 \| good	6.958 \| good	0.116 \| good
2026-10-22T10:00:00.000Z	30 \| good	0.837 \| good	2.882 \| good	32.245 \| good	0.59 \| good	9.965 \| good	0.164 \| good
2026-10-22T11:00:00.000Z	29 \| good	0.643 \| good	3.081 \| good	31.328 \| good	0.42 \| good	9.62 \| good	0.196 \| good
2026-10-22T12:00:00.000Z	30 \| good	1.111 \| good	5.58 \| good	31.878 \| good	0.569 \| good	15.65 \| good	0.196 \| good
2026-10-22T13:00:00.000Z	31 \| good	1.404 \| good	5.587 \| good	33.806 \| good	0.543 \| good	22.466 \| good	0.406 \| good
2026-10-22T14:00:00.000Z	25 \| good	2.017 \| good	6.748 \| good	26.817 \| good	0.651 \| good	24.303 \| good	0.394 \| good
2026-10-22T15:00:00.000Z	23 \| good	2.186 \| good	8.992 \| good	24.676 \| good	0.895 \| good	16.712 \| good	0.622 \| good
2026-10-22T16:00:00.000Z	21 \| good	3.218 \| good	10.086 \| good	23.345 \| good	1.188 \| good	19.326 \| good	0.503 \| good
2026-10-22T17:00:00.000Z	22 \| good	3.828 \| good	20.6 \| good	22.565 \| good	1.282 \| good	16.722 \| good	0.437 \| good
2026-10-22T18:00:00.000Z	25 \| good	4.018 \| good	15.118 \| good	26.888 \| good	1.143 \| good	14.782 \| good	0.336 \| good
2026-10-22T19:00:00.000Z	27 \| good	3.266 \| good	13.575 \| good	28.976 \| good	0.886 \| good	15.052 \| good	0.324 \| good
2026-10-22T20:00:00.000Z	28 \| good	2.778 \| good	11.708 \| good	29.895 \| good	1.04 \| good	23.223 \| good	0.345 \| good
2026-10-22T21:00:00.000Z	24 \| good	3.083 \| good	12.194 \| good	25.285 \| good	1.086 \| good	24.72 \| good	0.397 \| good
2026-10-22T22:00:00.000Z	36 \| good	0.366 \| good	1.321 \| good	38.811 \| good	0.311 \| good	1.086 \| good	0.098 \| good
2026-10-22T23:00:00.000Z	37 \| good	0.374 \| good	1.251 \| good	39.786 \| good	0.302 \| good	1.267 \| good	0.101 \| good
2026-10-23T00:00:00.000Z	36 \| good	0.392 \| good	1.336 \| good	38.547 \| good	0.305 \| good	3.943 \| good	0.119 \| good
2026-10-23T01:00:00.000Z	31 \| good	0.365 \| good	1.274 \| good	34.122 \| good	0.333 \| good	8.063 \| good	0.148 \| good
2026-10-23T02:00:00.000Z	34 \| good	0.298 \| good	1 \| good	37.452 \| good	0.337 \| good	8.331 \| good	0.155 \| good
2026-10-23T03:00:00.000Z	38 \| good	0.236 \| good	1 \| good	41.019 \| good	0.316 \| good	8.205 \| good	0.15 \| good
2026-10-23T04:00:00.000Z	37 \| good	0.246 \| good	1 \| good	40.454 \| good	0.301 \| good	7.952 \| good	0.145 \| good
2026-10-23T05:00:00.000Z	35 \| good	0.264 \| good	1 \| good	37.97 \| good	0.29 \| good	7.415 \| good	0.141 \| good
2026-10-23T06:00:00.000Z	35 \| good	0.265 \| good	1 \| good	37.823 \| good	0.274 \| good	6.381 \| good	0.134 \| good
2026-10-23T07:00:00.000Z	32 \| good	0.275 \| good	1 \| good	34.71 \| good	0.26 \| good	4.947 \| good	0.126 \| good
2026-10-23T08:00:00.000Z	30 \| good	0.299 \| good	1 \| good	32.051 \| good	0.256 \| good	3.563 \| good	0.118 \| good
2026-10-23T09:00:00.000Z	30 \| good	0.3 \| good	1 \| good	31.646 \| good	0.25 \| good	2.504 \| good	0.112 \| good
2026-10-23T10:00:00.000Z	31 \| good	0.578 \| good	2 \| good	32.705 \| good	0.24 \| good	2.001 \| good	0.11 \| good
2026-10-23T11:00:00.000Z	30 \| good	0.329 \| good	1 \| good	32.485 \| good	0.23 \| good	1.807 \| good	0.11 \| good
2026-10-23T12:00:00.000Z	31 \| good	0.729 \| good	2.834 \| good	33.662 \| good	0.22 \| good	1.799 \| good	0.111 \| good
2026-10-23T13:00:00.000Z	31 \| good	0.764 \| good	2.867 \| good	33.01 \| good	0.216 \| good	2.271 \| good	0.115 \| good
2026-10-23T14:00:00.000Z	30 \| good	1.079 \| good	4.631 \| good	32.214 \| good	0.219 \| good	2.952 \| good	0.122 \| good
2026-10-23T15:00:00.000Z	33 \| good	1.116 \| good	4.629 \| good	35.997 \| good	0.212 \| good	2.55 \| good	0.124 \| good
2026-10-23T16:00:00.000Z	39 \| good	0.458 \| good	1.798 \| good	42.114 \| good	0.194 \| good	1.606 \| good	0.117 \| good
2026-10-23T17:00:00.000Z	43 \| good	0.29 \| good	0.999 \| good	46.246 \| good	0.169 \| good	0.867 \| good	0.109 \| good
2026-10-23T18:00:00.000Z	45 \| good	0.228 \| good	0.915 \| good	48.904 \| good	0.146 \| good	0.542 \| good	0.104 \| good
2026-10-23T19:00:00.000Z	47 \| good	0.549 \| good	2 \| good	50.77 \| good	0.134 \| good	0.423 \| good	0.101 \| good
2026-10-23T20:00:00.000Z	47 \| good	1.021 \| good	4.057 \| good	51.418 \| good	0.125 \| good	0.38 \| good	0.1 \| good
2026-10-23T21:00:00.000Z	48 \| good	1.086 \| good	4.336 \| good	51.558 \| good	0.116 \| good	0.383 \| good	0.098 \| good
2026-10-23T22:00:00.000Z	47 \| good	0.862 \| good	3.336 \| good	51.429 \| good	0.11 \| good	0.435 \| good	0.097 \| good
2026-10-23T23:00:00.000Z	45 \| good	0.399 \| good	1.371 \| good	49.19 \| good	0.109 \| good	0.594 \| good	0.097 \| good
2026-10-24T00:00:00.000Z	41 \| good	0.439 \| good	1.834 \| good	43.616 \| good	0.124 \| good	2.284 \| good	0.107 \| good
2026-10-24T01:00:00.000Z	35 \| good	0.433 \| good	1.834 \| good	38.18 \| good	0.158 \| good	5.819 \| good	0.125 \| good
2026-10-24T02:00:00.000Z	36 \| good	0.43 \| good	1.882 \| good	39.052 \| good	0.181 \| good	7.775 \| good	0.137 \| good
2026-10-24T03:00:00.000Z	35 \| good	0.405 \| good	1.772 \| good	37.594 \| good	0.191 \| good	8.331 \| good	0.141 \| good
2026-10-24T04:00:00.000Z	36 \| good	0.371 \| good	1.274 \| good	39.322 \| good	0.195 \| good	8.551 \| good	0.143 \| good
2026-10-24T05:00:00.000Z	35 \| good	0.398 \| good	1.336 \| good	38.315 \| good	0.197 \| good	9.055 \| good	0.147 \| good
2026-10-24T06:00:00.000Z	33 \| good	0.6 \| good	2.258 \| good	36.199 \| good	0.188 \| good	9.042 \| good	0.151 \| good
2026-10-24T07:00:00.000Z	29 \| good	1.946 \| good	7.9 \| good	31.193 \| good	0.173 \| good	8.499 \| good	0.15 \| good
2026-10-24T08:00:00.000Z	28 \| good	5.178 \| good	22.81 \| good	29.752 \| good	0.162 \| good	8.342 \| good	0.145 \| good
2026-10-24T09:00:00.000Z	49 \| good	8.733 \| good	38.322 \| good	29.293 \| good	0.155 \| good	8.917 \| good	0.144 \| good
2026-10-24T10:00:00.000Z	54 \| moderate	11.126 \| good	49.623 \| good	28.136 \| good	0.152 \| good	9.026 \| good	0.145 \| good
2026-10-24T11:00:00.000Z	64 \| moderate	15.786 \| fine	70.663 \| fine	30.174 \| good	0.17 \| good	8.21 \| good	0.139 \| good
2026-10-24T12:00:00.000Z	67 \| moderate	18.087 \| fine	80.279 \| fine	32.516 \| good	0.194 \| good	7.4 \| good	0.135 \| good
2026-10-24T13:00:00.000Z	64 \| moderate	16.041 \| fine	71.671 \| fine	33.879 \| good	0.207 \| good	6.602 \| good	0.134 \| good
2026-10-24T14:00:00.000Z	52 \| moderate	10.393 \| good	46.304 \| good	35.252 \| good	0.225 \| good	6.502 \| good	0.137 \| good
2026-10-24T15:00:00.000Z	38 \| good	6.537 \| good	28.994 \| good	37.793 \| good	0.231 \| good	2.829 \| good	0.124 \| good
2026-10-24T16:00:00.000Z	36 \| good	5.714 \| good	24.849 \| good	38.922 \| good	0.288 \| good	2.147 \| good	0.126 \| good
2026-10-24T17:00:00.000Z	34 \| good	5.156 \| good	22.297 \| good	37.314 \| good	0.36 \| good	1.93 \| good	0.13 \| good
2026-10-24T18:00:00.000Z	37 \| good	3.612 \| good	15.926 \| good	39.705 \| good	0.422 \| good	1.709 \| good	0.133 \| good
2026-10-24T19:00:00.000Z	40 \| good	2.24 \| good	9.229 \| good	42.663 \| good	0.472 \| good	1.67 \| good	0.136 \| good
2026-10-24T20:00:00.000Z	40 \| good	1.133 \| good	4.569 \| good	43.174 \| good	0.503 \| good	1.657 \| good	0.137 \| good
2026-10-24T21:00:00.000Z	41 \| good	1.336 \| good	5.621 \| good	44.475 \| good	0.511 \| good	1.672 \| good	0.138 \| good

Castle Pines, Colorado live air quality index now

Major air pollutants in Castle Pines, Colorado

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Air quality in nearby cities

Lone Tree, Colorado

Highlands Ranch, Colorado

Castle Rock, Colorado

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Parker, Colorado

The Pinery, Colorado

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Frequently asked questions

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What is the current concentration of PM2.5 in Castle Pines, Colorado?

What is the current concentration of PM10 in Castle Pines, Colorado?

What is the current concentration of carbon monoxide (CO) in Castle Pines, Colorado?

What is the current concentration of sulfur dioxide (SO2) in Castle Pines, Colorado?

What is the current concentration of ozone (O3) in Castle Pines, Colorado?

What is the current concentration of nitrogen dioxide (NO2) in Castle Pines, Colorado?

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 Castle Pines, Colorado?

What is the current concentration of PM₁₀ in Castle Pines, Colorado?

What is the current concentration of sulfur dioxide (SO₂) in Castle Pines, Colorado?

What is the current concentration of ozone (O₃) in Castle Pines, Colorado?

What is the current concentration of nitrogen dioxide (NO₂) in Castle Pines, Colorado?