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

The current PM10 concentration at Castle Pines, Colorado is 31.192 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 0.929 ppb.

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

The current ozone (O3) concentration at Castle Pines, Colorado is 63.089 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 12.519 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 7.49 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)

Moderate

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)

7.49 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

31.19 μg/m³

155

255

425

605+

Ozone (O₃)

63.09 ppb

201

201+

Sulfur Dioxide (SO₂)

0.93 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

12.52 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.19 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

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
2026-07-21T22:00:00.000Z	105 \| sensitive	11.311 \| good	50.287 \| good	72.443 \| moderate	0.713 \| good	4.79 \| good	0.188 \| good
2026-07-21T23:00:00.000Z	101 \| sensitive	10.081 \| good	45.278 \| good	70.701 \| fine	0.661 \| good	4.327 \| good	0.188 \| good
2026-07-22T00:00:00.000Z	97 \| moderate	8.322 \| good	41.639 \| good	68.829 \| fine	0.686 \| good	5.475 \| good	0.196 \| good
2026-07-22T01:00:00.000Z	84 \| moderate	6.884 \| good	38.282 \| good	65.406 \| fine	0.841 \| good	6.204 \| good	0.19 \| good
2026-07-22T02:00:00.000Z	74 \| moderate	6.206 \| good	29.006 \| good	62.015 \| fine	0.505 \| good	10.352 \| good	0.293 \| good
2026-07-22T03:00:00.000Z	64 \| moderate	6.086 \| good	29.013 \| good	58.562 \| fine	0.456 \| good	12.581 \| good	0.293 \| good
2026-07-22T04:00:00.000Z	54 \| moderate	5.897 \| good	28.043 \| good	55.812 \| fine	0.524 \| good	11.899 \| good	0.322 \| good
2026-07-22T05:00:00.000Z	51 \| moderate	6.264 \| good	34.501 \| good	55.371 \| fine	0.714 \| good	9.972 \| good	0.293 \| good
2026-07-22T06:00:00.000Z	54 \| moderate	6.919 \| good	31.968 \| good	55.62 \| fine	0.428 \| good	6.298 \| good	0.189 \| good
2026-07-22T07:00:00.000Z	51 \| moderate	6.087 \| good	36.792 \| good	55.154 \| fine	0.565 \| good	7.278 \| good	0.182 \| good
2026-07-22T08:00:00.000Z	50 \| good	5.683 \| good	22.885 \| good	54.235 \| good	0.631 \| good	7.126 \| good	0.182 \| good
2026-07-22T09:00:00.000Z	50 \| good	6.295 \| good	21.105 \| good	53.654 \| good	0.424 \| good	8.553 \| good	0.182 \| good
2026-07-22T10:00:00.000Z	48 \| good	6.23 \| good	30.877 \| good	52.046 \| good	0.471 \| good	10.469 \| good	0.182 \| good
2026-07-22T11:00:00.000Z	48 \| good	6.48 \| good	27.332 \| good	51.733 \| good	0.66 \| good	11.285 \| good	0.234 \| good
2026-07-22T12:00:00.000Z	46 \| good	5.214 \| good	20.776 \| good	49.974 \| good	0.587 \| good	15.256 \| good	0.351 \| good
2026-07-22T13:00:00.000Z	45 \| good	5.378 \| good	21.945 \| good	49.396 \| good	0.562 \| good	20.15 \| good	0.351 \| good
2026-07-22T14:00:00.000Z	45 \| good	6.043 \| good	37.632 \| good	49.411 \| good	0.737 \| good	19.13 \| good	0.433 \| good
2026-07-22T15:00:00.000Z	82 \| moderate	26.289 \| fine	29.368 \| good	49.847 \| good	1.189 \| good	23.162 \| good	0.433 \| good
2026-07-22T16:00:00.000Z	81 \| moderate	25.34 \| fine	41.798 \| good	54.212 \| good	0.735 \| good	18.3 \| good	0.351 \| good
2026-07-22T17:00:00.000Z	61 \| moderate	9.302 \| good	35.27 \| good	57.841 \| fine	1.006 \| good	12.324 \| good	0.248 \| good
2026-07-22T18:00:00.000Z	77 \| moderate	9.318 \| good	38.575 \| good	63.133 \| fine	0.98 \| good	8.699 \| good	0.253 \| good
2026-07-22T19:00:00.000Z	93 \| moderate	8.948 \| good	33.292 \| good	68.272 \| fine	0.745 \| good	9.962 \| good	0.253 \| good
2026-07-22T20:00:00.000Z	105 \| sensitive	8.008 \| good	34.737 \| good	71.549 \| moderate	0.673 \| good	7.077 \| good	0.2 \| good
2026-07-22T21:00:00.000Z	115 \| sensitive	9.495 \| good	37.78 \| good	75.435 \| moderate	0.762 \| good	13.661 \| good	0.336 \| good
2026-07-22T22:00:00.000Z	105 \| sensitive	9.897 \| good	37.768 \| good	71.886 \| moderate	0.755 \| good	23.168 \| good	0.41 \| good
2026-07-22T23:00:00.000Z	100 \| moderate	9.293 \| good	44.349 \| good	70.029 \| fine	0.639 \| good	11.968 \| good	0.2 \| good
2026-07-23T00:00:00.000Z	90 \| moderate	8.48 \| good	42.319 \| good	66.51 \| fine	0.561 \| good	10.882 \| good	0.253 \| good
2026-07-23T01:00:00.000Z	74 \| moderate	8.773 \| good	37.01 \| good	62.088 \| fine	0.519 \| good	17.489 \| good	0.404 \| good
2026-07-23T02:00:00.000Z	64 \| moderate	7.769 \| good	31.192 \| good	59.356 \| fine	0.542 \| good	20.036 \| good	0.404 \| good
2026-07-23T03:00:00.000Z	50 \| good	5.872 \| good	25.58 \| good	54.062 \| good	0.317 \| good	6.848 \| good	0.159 \| good
2026-07-23T04:00:00.000Z	45 \| good	5.397 \| good	31.693 \| good	49.079 \| good	0.656 \| good	20.782 \| good	0.351 \| good
2026-07-23T05:00:00.000Z	42 \| good	5.406 \| good	22.061 \| good	44.845 \| good	0.588 \| good	19.374 \| good	0.245 \| good
2026-07-23T06:00:00.000Z	41 \| good	4.398 \| good	17.646 \| good	43.974 \| good	0.519 \| good	12.21 \| good	0.192 \| good
2026-07-23T07:00:00.000Z	38 \| good	4.136 \| good	15.186 \| good	41.319 \| good	0.445 \| good	9.057 \| good	0.14 \| good
2026-07-23T08:00:00.000Z	37 \| good	4.061 \| good	14.561 \| good	39.846 \| good	0.539 \| good	11.118 \| good	0.192 \| good
2026-07-23T09:00:00.000Z	33 \| good	4.319 \| good	13.068 \| good	35.716 \| good	0.686 \| good	14.495 \| good	0.192 \| good
2026-07-23T10:00:00.000Z	32 \| good	4.151 \| good	15.098 \| good	35.144 \| good	0.749 \| good	15.768 \| good	0.192 \| good
2026-07-23T11:00:00.000Z	31 \| good	4.503 \| good	19.626 \| good	34.288 \| good	0.812 \| good	17.829 \| good	0.238 \| good
2026-07-23T12:00:00.000Z	29 \| good	4.441 \| good	16.493 \| good	30.754 \| good	0.637 \| good	19.836 \| good	0.224 \| good
2026-07-23T13:00:00.000Z	29 \| good	4.639 \| good	16.673 \| good	30.989 \| good	0.689 \| good	23.73 \| good	0.465 \| good
2026-07-23T14:00:00.000Z	33 \| good	6.003 \| good	27.767 \| good	32.206 \| good	0.688 \| good	22.733 \| good	0.465 \| good
2026-07-23T15:00:00.000Z	36 \| good	5.443 \| good	24.23 \| good	38.512 \| good	0.687 \| good	19.935 \| good	0.389 \| good
2026-07-23T16:00:00.000Z	38 \| good	7.196 \| good	29.346 \| good	41.377 \| good	0.904 \| good	16.785 \| good	0.329 \| good
2026-07-23T17:00:00.000Z	45 \| good	7.87 \| good	28.563 \| good	48.94 \| good	0.915 \| good	16.849 \| good	0.298 \| good
2026-07-23T18:00:00.000Z	54 \| moderate	8.35 \| good	35.819 \| good	56.105 \| fine	0.887 \| good	12.192 \| good	0.328 \| good
2026-07-23T19:00:00.000Z	74 \| moderate	7.867 \| good	28.576 \| good	61.77 \| fine	0.954 \| good	12.089 \| good	0.194 \| good
2026-07-23T20:00:00.000Z	77 \| moderate	7.49 \| good	31.192 \| good	63.089 \| fine	0.929 \| good	12.519 \| good	0.194 \| good
2026-07-23T21:00:00.000Z	87 \| moderate	7.157 \| good	30.116 \| good	65.908 \| fine	0.793 \| good	13.644 \| good	0.251 \| good
2026-07-23T21:00:00.000Z	77 \| moderate	7.49 \| good	31.192 \| good	63.089 \| fine	0.929 \| good	12.519 \| good	0.194 \| good
2026-07-23T22:00:00.000Z	50 \| good	7.527 \| good	32.967 \| good	54.343 \| good	0.203 \| good	1.226 \| good	0.11 \| good
2026-07-23T23:00:00.000Z	58 \| moderate	5.749 \| good	24.909 \| good	57.026 \| fine	0.22 \| good	1.499 \| good	0.112 \| good
2026-07-24T00:00:00.000Z	54 \| moderate	4.533 \| good	19.488 \| good	56.116 \| fine	0.229 \| good	1.772 \| good	0.114 \| good
2026-07-24T01:00:00.000Z	71 \| moderate	5.368 \| good	23.132 \| good	60.947 \| fine	0.248 \| good	2.249 \| good	0.116 \| good
2026-07-24T02:00:00.000Z	71 \| moderate	6.584 \| good	28.913 \| good	60.752 \| fine	0.274 \| good	3.998 \| good	0.127 \| good
2026-07-24T03:00:00.000Z	50 \| good	7.7 \| good	34.362 \| good	54.429 \| good	0.312 \| good	8.209 \| good	0.155 \| good
2026-07-24T04:00:00.000Z	49 \| good	8.853 \| good	38.954 \| good	51.183 \| good	0.337 \| good	10.572 \| good	0.172 \| good
2026-07-24T05:00:00.000Z	52 \| moderate	9.922 \| good	44.227 \| good	47.895 \| good	0.331 \| good	12.8 \| good	0.188 \| good
2026-07-24T06:00:00.000Z	44 \| good	7.278 \| good	32.223 \| good	48.483 \| good	0.285 \| good	13.297 \| good	0.195 \| good
2026-07-24T07:00:00.000Z	44 \| good	3.897 \| good	16.925 \| good	48.081 \| good	0.234 \| good	11.382 \| good	0.187 \| good
2026-07-24T08:00:00.000Z	44 \| good	2.847 \| good	11.854 \| good	48.431 \| good	0.198 \| good	9.998 \| good	0.178 \| good
2026-07-24T09:00:00.000Z	42 \| good	2.448 \| good	10.037 \| good	45.09 \| good	0.168 \| good	8.881 \| good	0.169 \| good
2026-07-24T10:00:00.000Z	43 \| good	2.823 \| good	11.506 \| good	45.691 \| good	0.143 \| good	8.105 \| good	0.162 \| good
2026-07-24T11:00:00.000Z	38 \| good	3.326 \| good	14.62 \| good	41.305 \| good	0.123 \| good	7.629 \| good	0.157 \| good
2026-07-24T12:00:00.000Z	36 \| good	4.368 \| good	19.018 \| good	38.635 \| good	0.106 \| good	6.814 \| good	0.153 \| good
2026-07-24T13:00:00.000Z	36 \| good	4.824 \| good	20.887 \| good	38.68 \| good	0.1 \| good	5.161 \| good	0.148 \| good
2026-07-24T14:00:00.000Z	41 \| good	5.051 \| good	21.951 \| good	43.6 \| good	0.122 \| good	4.318 \| good	0.148 \| good
2026-07-24T15:00:00.000Z	49 \| good	5.759 \| good	24.903 \| good	53.095 \| good	0.176 \| good	3.005 \| good	0.13 \| good
2026-07-24T16:00:00.000Z	67 \| moderate	6.484 \| good	28.979 \| good	60.016 \| fine	0.264 \| good	1.482 \| good	0.119 \| good
2026-07-24T17:00:00.000Z	87 \| moderate	6.727 \| good	29.969 \| good	66.137 \| fine	0.246 \| good	0.794 \| good	0.12 \| good
2026-07-24T18:00:00.000Z	100 \| moderate	6.34 \| good	28.194 \| good	70.14 \| fine	0.224 \| good	0.579 \| good	0.122 \| good
2026-07-24T19:00:00.000Z	101 \| sensitive	6.752 \| good	29.896 \| good	71.342 \| moderate	0.209 \| good	0.498 \| good	0.123 \| good
2026-07-24T20:00:00.000Z	115 \| sensitive	7.027 \| good	31.133 \| good	74.698 \| moderate	0.197 \| good	0.47 \| good	0.123 \| good
2026-07-24T21:00:00.000Z	112 \| sensitive	6.981 \| good	31.066 \| good	74.137 \| moderate	0.188 \| good	0.489 \| good	0.122 \| good
2026-07-24T22:00:00.000Z	101 \| sensitive	6.295 \| good	28.083 \| good	70.642 \| fine	0.184 \| good	0.546 \| good	0.122 \| good
2026-07-24T23:00:00.000Z	80 \| moderate	6.323 \| good	28.167 \| good	63.938 \| fine	0.181 \| good	0.733 \| good	0.122 \| good
2026-07-25T00:00:00.000Z	48 \| good	7.176 \| good	31.815 \| good	52.275 \| good	0.192 \| good	1.343 \| good	0.126 \| good
2026-07-25T01:00:00.000Z	51 \| moderate	3.288 \| good	14.381 \| good	54.685 \| good	0.216 \| good	1.817 \| good	0.129 \| good
2026-07-25T02:00:00.000Z	67 \| moderate	5.377 \| good	23.553 \| good	60.267 \| fine	0.224 \| good	3.582 \| good	0.141 \| good
2026-07-25T03:00:00.000Z	54 \| moderate	4.096 \| good	17.697 \| good	55.582 \| fine	0.249 \| good	6.147 \| good	0.157 \| good
2026-07-25T04:00:00.000Z	46 \| good	3.796 \| good	16.543 \| good	49.976 \| good	0.267 \| good	7.881 \| good	0.168 \| good
2026-07-25T05:00:00.000Z	45 \| good	4.071 \| good	17.92 \| good	48.695 \| good	0.25 \| good	8.825 \| good	0.176 \| good
2026-07-25T06:00:00.000Z	48 \| good	4.113 \| good	17.837 \| good	51.846 \| good	0.221 \| good	9.301 \| good	0.181 \| good
2026-07-25T07:00:00.000Z	48 \| good	3.872 \| good	17.061 \| good	52.141 \| good	0.19 \| good	8.961 \| good	0.182 \| good
2026-07-25T08:00:00.000Z	48 \| good	3.763 \| good	16.577 \| good	52.094 \| good	0.169 \| good	8.318 \| good	0.178 \| good
2026-07-25T09:00:00.000Z	46 \| good	3.59 \| good	16.18 \| good	49.802 \| good	0.154 \| good	7.73 \| good	0.174 \| good
2026-07-25T10:00:00.000Z	45 \| good	3.82 \| good	16.935 \| good	48.698 \| good	0.149 \| good	7.225 \| good	0.169 \| good
2026-07-25T11:00:00.000Z	39 \| good	5.221 \| good	22.341 \| good	41.839 \| good	0.147 \| good	6.827 \| good	0.164 \| good
2026-07-25T12:00:00.000Z	40 \| good	5.487 \| good	23.348 \| good	43.327 \| good	0.144 \| good	6.263 \| good	0.16 \| good
2026-07-25T13:00:00.000Z	41 \| good	5.964 \| good	26.902 \| good	44.343 \| good	0.137 \| good	4.964 \| good	0.156 \| good
2026-07-25T14:00:00.000Z	44 \| good	6.091 \| good	27.131 \| good	48.245 \| good	0.163 \| good	4.118 \| good	0.156 \| good
2026-07-25T15:00:00.000Z	58 \| moderate	5.835 \| good	25.373 \| good	56.601 \| fine	0.19 \| good	2.362 \| good	0.137 \| good
2026-07-25T16:00:00.000Z	77 \| moderate	5.785 \| good	24.969 \| good	62.943 \| fine	0.217 \| good	1.347 \| good	0.127 \| good
2026-07-25T17:00:00.000Z	80 \| moderate	5.768 \| good	24.963 \| good	63.565 \| fine	0.201 \| good	0.737 \| good	0.12 \| good
2026-07-25T18:00:00.000Z	84 \| moderate	5.325 \| good	23.025 \| good	65.495 \| fine	0.162 \| good	0.476 \| good	0.116 \| good
2026-07-25T19:00:00.000Z	93 \| moderate	5.36 \| good	23.028 \| good	67.754 \| fine	0.137 \| good	0.385 \| good	0.113 \| good
2026-07-25T20:00:00.000Z	100 \| moderate	5.887 \| good	25.436 \| good	69.507 \| fine	0.124 \| good	0.373 \| good	0.11 \| good
2026-07-25T21:00:00.000Z	90 \| moderate	6.7 \| good	29.945 \| good	67.353 \| fine	0.118 \| good	0.419 \| good	0.109 \| good

Castle Pines

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

0.19ppm

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 09:00:00 on 2026-07-22.

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 01:00:00 on 2026-07-23.

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

The current air quality in Castle Pines, Colorado is 77, categorized as Moderate based on real-time data.

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

The most common pollutant in Castle Pines, Colorado is O3.

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 7.49 μg/m³.

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

The current PM₁₀ concentration at Castle Pines, Colorado is 31.192 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 0.194 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 0.929 ppb.

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

The current ozone (O₃) concentration at Castle Pines, Colorado is 63.089 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 12.519 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-21T22:00:00.000Z	105 \| sensitive	11.311 \| good	50.287 \| good	72.443 \| moderate	0.713 \| good	4.79 \| good	0.188 \| good
2026-07-21T23:00:00.000Z	101 \| sensitive	10.081 \| good	45.278 \| good	70.701 \| fine	0.661 \| good	4.327 \| good	0.188 \| good
2026-07-22T00:00:00.000Z	97 \| moderate	8.322 \| good	41.639 \| good	68.829 \| fine	0.686 \| good	5.475 \| good	0.196 \| good
2026-07-22T01:00:00.000Z	84 \| moderate	6.884 \| good	38.282 \| good	65.406 \| fine	0.841 \| good	6.204 \| good	0.19 \| good
2026-07-22T02:00:00.000Z	74 \| moderate	6.206 \| good	29.006 \| good	62.015 \| fine	0.505 \| good	10.352 \| good	0.293 \| good
2026-07-22T03:00:00.000Z	64 \| moderate	6.086 \| good	29.013 \| good	58.562 \| fine	0.456 \| good	12.581 \| good	0.293 \| good
2026-07-22T04:00:00.000Z	54 \| moderate	5.897 \| good	28.043 \| good	55.812 \| fine	0.524 \| good	11.899 \| good	0.322 \| good
2026-07-22T05:00:00.000Z	51 \| moderate	6.264 \| good	34.501 \| good	55.371 \| fine	0.714 \| good	9.972 \| good	0.293 \| good
2026-07-22T06:00:00.000Z	54 \| moderate	6.919 \| good	31.968 \| good	55.62 \| fine	0.428 \| good	6.298 \| good	0.189 \| good
2026-07-22T07:00:00.000Z	51 \| moderate	6.087 \| good	36.792 \| good	55.154 \| fine	0.565 \| good	7.278 \| good	0.182 \| good
2026-07-22T08:00:00.000Z	50 \| good	5.683 \| good	22.885 \| good	54.235 \| good	0.631 \| good	7.126 \| good	0.182 \| good
2026-07-22T09:00:00.000Z	50 \| good	6.295 \| good	21.105 \| good	53.654 \| good	0.424 \| good	8.553 \| good	0.182 \| good
2026-07-22T10:00:00.000Z	48 \| good	6.23 \| good	30.877 \| good	52.046 \| good	0.471 \| good	10.469 \| good	0.182 \| good
2026-07-22T11:00:00.000Z	48 \| good	6.48 \| good	27.332 \| good	51.733 \| good	0.66 \| good	11.285 \| good	0.234 \| good
2026-07-22T12:00:00.000Z	46 \| good	5.214 \| good	20.776 \| good	49.974 \| good	0.587 \| good	15.256 \| good	0.351 \| good
2026-07-22T13:00:00.000Z	45 \| good	5.378 \| good	21.945 \| good	49.396 \| good	0.562 \| good	20.15 \| good	0.351 \| good
2026-07-22T14:00:00.000Z	45 \| good	6.043 \| good	37.632 \| good	49.411 \| good	0.737 \| good	19.13 \| good	0.433 \| good
2026-07-22T15:00:00.000Z	82 \| moderate	26.289 \| fine	29.368 \| good	49.847 \| good	1.189 \| good	23.162 \| good	0.433 \| good
2026-07-22T16:00:00.000Z	81 \| moderate	25.34 \| fine	41.798 \| good	54.212 \| good	0.735 \| good	18.3 \| good	0.351 \| good
2026-07-22T17:00:00.000Z	61 \| moderate	9.302 \| good	35.27 \| good	57.841 \| fine	1.006 \| good	12.324 \| good	0.248 \| good
2026-07-22T18:00:00.000Z	77 \| moderate	9.318 \| good	38.575 \| good	63.133 \| fine	0.98 \| good	8.699 \| good	0.253 \| good
2026-07-22T19:00:00.000Z	93 \| moderate	8.948 \| good	33.292 \| good	68.272 \| fine	0.745 \| good	9.962 \| good	0.253 \| good
2026-07-22T20:00:00.000Z	105 \| sensitive	8.008 \| good	34.737 \| good	71.549 \| moderate	0.673 \| good	7.077 \| good	0.2 \| good
2026-07-22T21:00:00.000Z	115 \| sensitive	9.495 \| good	37.78 \| good	75.435 \| moderate	0.762 \| good	13.661 \| good	0.336 \| good
2026-07-22T22:00:00.000Z	105 \| sensitive	9.897 \| good	37.768 \| good	71.886 \| moderate	0.755 \| good	23.168 \| good	0.41 \| good
2026-07-22T23:00:00.000Z	100 \| moderate	9.293 \| good	44.349 \| good	70.029 \| fine	0.639 \| good	11.968 \| good	0.2 \| good
2026-07-23T00:00:00.000Z	90 \| moderate	8.48 \| good	42.319 \| good	66.51 \| fine	0.561 \| good	10.882 \| good	0.253 \| good
2026-07-23T01:00:00.000Z	74 \| moderate	8.773 \| good	37.01 \| good	62.088 \| fine	0.519 \| good	17.489 \| good	0.404 \| good
2026-07-23T02:00:00.000Z	64 \| moderate	7.769 \| good	31.192 \| good	59.356 \| fine	0.542 \| good	20.036 \| good	0.404 \| good
2026-07-23T03:00:00.000Z	50 \| good	5.872 \| good	25.58 \| good	54.062 \| good	0.317 \| good	6.848 \| good	0.159 \| good
2026-07-23T04:00:00.000Z	45 \| good	5.397 \| good	31.693 \| good	49.079 \| good	0.656 \| good	20.782 \| good	0.351 \| good
2026-07-23T05:00:00.000Z	42 \| good	5.406 \| good	22.061 \| good	44.845 \| good	0.588 \| good	19.374 \| good	0.245 \| good
2026-07-23T06:00:00.000Z	41 \| good	4.398 \| good	17.646 \| good	43.974 \| good	0.519 \| good	12.21 \| good	0.192 \| good
2026-07-23T07:00:00.000Z	38 \| good	4.136 \| good	15.186 \| good	41.319 \| good	0.445 \| good	9.057 \| good	0.14 \| good
2026-07-23T08:00:00.000Z	37 \| good	4.061 \| good	14.561 \| good	39.846 \| good	0.539 \| good	11.118 \| good	0.192 \| good
2026-07-23T09:00:00.000Z	33 \| good	4.319 \| good	13.068 \| good	35.716 \| good	0.686 \| good	14.495 \| good	0.192 \| good
2026-07-23T10:00:00.000Z	32 \| good	4.151 \| good	15.098 \| good	35.144 \| good	0.749 \| good	15.768 \| good	0.192 \| good
2026-07-23T11:00:00.000Z	31 \| good	4.503 \| good	19.626 \| good	34.288 \| good	0.812 \| good	17.829 \| good	0.238 \| good
2026-07-23T12:00:00.000Z	29 \| good	4.441 \| good	16.493 \| good	30.754 \| good	0.637 \| good	19.836 \| good	0.224 \| good
2026-07-23T13:00:00.000Z	29 \| good	4.639 \| good	16.673 \| good	30.989 \| good	0.689 \| good	23.73 \| good	0.465 \| good
2026-07-23T14:00:00.000Z	33 \| good	6.003 \| good	27.767 \| good	32.206 \| good	0.688 \| good	22.733 \| good	0.465 \| good
2026-07-23T15:00:00.000Z	36 \| good	5.443 \| good	24.23 \| good	38.512 \| good	0.687 \| good	19.935 \| good	0.389 \| good
2026-07-23T16:00:00.000Z	38 \| good	7.196 \| good	29.346 \| good	41.377 \| good	0.904 \| good	16.785 \| good	0.329 \| good
2026-07-23T17:00:00.000Z	45 \| good	7.87 \| good	28.563 \| good	48.94 \| good	0.915 \| good	16.849 \| good	0.298 \| good
2026-07-23T18:00:00.000Z	54 \| moderate	8.35 \| good	35.819 \| good	56.105 \| fine	0.887 \| good	12.192 \| good	0.328 \| good
2026-07-23T19:00:00.000Z	74 \| moderate	7.867 \| good	28.576 \| good	61.77 \| fine	0.954 \| good	12.089 \| good	0.194 \| good
2026-07-23T20:00:00.000Z	77 \| moderate	7.49 \| good	31.192 \| good	63.089 \| fine	0.929 \| good	12.519 \| good	0.194 \| good
2026-07-23T21:00:00.000Z	87 \| moderate	7.157 \| good	30.116 \| good	65.908 \| fine	0.793 \| good	13.644 \| good	0.251 \| good
2026-07-23T21:00:00.000Z	77 \| moderate	7.49 \| good	31.192 \| good	63.089 \| fine	0.929 \| good	12.519 \| good	0.194 \| good
2026-07-23T22:00:00.000Z	50 \| good	7.527 \| good	32.967 \| good	54.343 \| good	0.203 \| good	1.226 \| good	0.11 \| good
2026-07-23T23:00:00.000Z	58 \| moderate	5.749 \| good	24.909 \| good	57.026 \| fine	0.22 \| good	1.499 \| good	0.112 \| good
2026-07-24T00:00:00.000Z	54 \| moderate	4.533 \| good	19.488 \| good	56.116 \| fine	0.229 \| good	1.772 \| good	0.114 \| good
2026-07-24T01:00:00.000Z	71 \| moderate	5.368 \| good	23.132 \| good	60.947 \| fine	0.248 \| good	2.249 \| good	0.116 \| good
2026-07-24T02:00:00.000Z	71 \| moderate	6.584 \| good	28.913 \| good	60.752 \| fine	0.274 \| good	3.998 \| good	0.127 \| good
2026-07-24T03:00:00.000Z	50 \| good	7.7 \| good	34.362 \| good	54.429 \| good	0.312 \| good	8.209 \| good	0.155 \| good
2026-07-24T04:00:00.000Z	49 \| good	8.853 \| good	38.954 \| good	51.183 \| good	0.337 \| good	10.572 \| good	0.172 \| good
2026-07-24T05:00:00.000Z	52 \| moderate	9.922 \| good	44.227 \| good	47.895 \| good	0.331 \| good	12.8 \| good	0.188 \| good
2026-07-24T06:00:00.000Z	44 \| good	7.278 \| good	32.223 \| good	48.483 \| good	0.285 \| good	13.297 \| good	0.195 \| good
2026-07-24T07:00:00.000Z	44 \| good	3.897 \| good	16.925 \| good	48.081 \| good	0.234 \| good	11.382 \| good	0.187 \| good
2026-07-24T08:00:00.000Z	44 \| good	2.847 \| good	11.854 \| good	48.431 \| good	0.198 \| good	9.998 \| good	0.178 \| good
2026-07-24T09:00:00.000Z	42 \| good	2.448 \| good	10.037 \| good	45.09 \| good	0.168 \| good	8.881 \| good	0.169 \| good
2026-07-24T10:00:00.000Z	43 \| good	2.823 \| good	11.506 \| good	45.691 \| good	0.143 \| good	8.105 \| good	0.162 \| good
2026-07-24T11:00:00.000Z	38 \| good	3.326 \| good	14.62 \| good	41.305 \| good	0.123 \| good	7.629 \| good	0.157 \| good
2026-07-24T12:00:00.000Z	36 \| good	4.368 \| good	19.018 \| good	38.635 \| good	0.106 \| good	6.814 \| good	0.153 \| good
2026-07-24T13:00:00.000Z	36 \| good	4.824 \| good	20.887 \| good	38.68 \| good	0.1 \| good	5.161 \| good	0.148 \| good
2026-07-24T14:00:00.000Z	41 \| good	5.051 \| good	21.951 \| good	43.6 \| good	0.122 \| good	4.318 \| good	0.148 \| good
2026-07-24T15:00:00.000Z	49 \| good	5.759 \| good	24.903 \| good	53.095 \| good	0.176 \| good	3.005 \| good	0.13 \| good
2026-07-24T16:00:00.000Z	67 \| moderate	6.484 \| good	28.979 \| good	60.016 \| fine	0.264 \| good	1.482 \| good	0.119 \| good
2026-07-24T17:00:00.000Z	87 \| moderate	6.727 \| good	29.969 \| good	66.137 \| fine	0.246 \| good	0.794 \| good	0.12 \| good
2026-07-24T18:00:00.000Z	100 \| moderate	6.34 \| good	28.194 \| good	70.14 \| fine	0.224 \| good	0.579 \| good	0.122 \| good
2026-07-24T19:00:00.000Z	101 \| sensitive	6.752 \| good	29.896 \| good	71.342 \| moderate	0.209 \| good	0.498 \| good	0.123 \| good
2026-07-24T20:00:00.000Z	115 \| sensitive	7.027 \| good	31.133 \| good	74.698 \| moderate	0.197 \| good	0.47 \| good	0.123 \| good
2026-07-24T21:00:00.000Z	112 \| sensitive	6.981 \| good	31.066 \| good	74.137 \| moderate	0.188 \| good	0.489 \| good	0.122 \| good
2026-07-24T22:00:00.000Z	101 \| sensitive	6.295 \| good	28.083 \| good	70.642 \| fine	0.184 \| good	0.546 \| good	0.122 \| good
2026-07-24T23:00:00.000Z	80 \| moderate	6.323 \| good	28.167 \| good	63.938 \| fine	0.181 \| good	0.733 \| good	0.122 \| good
2026-07-25T00:00:00.000Z	48 \| good	7.176 \| good	31.815 \| good	52.275 \| good	0.192 \| good	1.343 \| good	0.126 \| good
2026-07-25T01:00:00.000Z	51 \| moderate	3.288 \| good	14.381 \| good	54.685 \| good	0.216 \| good	1.817 \| good	0.129 \| good
2026-07-25T02:00:00.000Z	67 \| moderate	5.377 \| good	23.553 \| good	60.267 \| fine	0.224 \| good	3.582 \| good	0.141 \| good
2026-07-25T03:00:00.000Z	54 \| moderate	4.096 \| good	17.697 \| good	55.582 \| fine	0.249 \| good	6.147 \| good	0.157 \| good
2026-07-25T04:00:00.000Z	46 \| good	3.796 \| good	16.543 \| good	49.976 \| good	0.267 \| good	7.881 \| good	0.168 \| good
2026-07-25T05:00:00.000Z	45 \| good	4.071 \| good	17.92 \| good	48.695 \| good	0.25 \| good	8.825 \| good	0.176 \| good
2026-07-25T06:00:00.000Z	48 \| good	4.113 \| good	17.837 \| good	51.846 \| good	0.221 \| good	9.301 \| good	0.181 \| good
2026-07-25T07:00:00.000Z	48 \| good	3.872 \| good	17.061 \| good	52.141 \| good	0.19 \| good	8.961 \| good	0.182 \| good
2026-07-25T08:00:00.000Z	48 \| good	3.763 \| good	16.577 \| good	52.094 \| good	0.169 \| good	8.318 \| good	0.178 \| good
2026-07-25T09:00:00.000Z	46 \| good	3.59 \| good	16.18 \| good	49.802 \| good	0.154 \| good	7.73 \| good	0.174 \| good
2026-07-25T10:00:00.000Z	45 \| good	3.82 \| good	16.935 \| good	48.698 \| good	0.149 \| good	7.225 \| good	0.169 \| good
2026-07-25T11:00:00.000Z	39 \| good	5.221 \| good	22.341 \| good	41.839 \| good	0.147 \| good	6.827 \| good	0.164 \| good
2026-07-25T12:00:00.000Z	40 \| good	5.487 \| good	23.348 \| good	43.327 \| good	0.144 \| good	6.263 \| good	0.16 \| good
2026-07-25T13:00:00.000Z	41 \| good	5.964 \| good	26.902 \| good	44.343 \| good	0.137 \| good	4.964 \| good	0.156 \| good
2026-07-25T14:00:00.000Z	44 \| good	6.091 \| good	27.131 \| good	48.245 \| good	0.163 \| good	4.118 \| good	0.156 \| good
2026-07-25T15:00:00.000Z	58 \| moderate	5.835 \| good	25.373 \| good	56.601 \| fine	0.19 \| good	2.362 \| good	0.137 \| good
2026-07-25T16:00:00.000Z	77 \| moderate	5.785 \| good	24.969 \| good	62.943 \| fine	0.217 \| good	1.347 \| good	0.127 \| good
2026-07-25T17:00:00.000Z	80 \| moderate	5.768 \| good	24.963 \| good	63.565 \| fine	0.201 \| good	0.737 \| good	0.12 \| good
2026-07-25T18:00:00.000Z	84 \| moderate	5.325 \| good	23.025 \| good	65.495 \| fine	0.162 \| good	0.476 \| good	0.116 \| good
2026-07-25T19:00:00.000Z	93 \| moderate	5.36 \| good	23.028 \| good	67.754 \| fine	0.137 \| good	0.385 \| good	0.113 \| good
2026-07-25T20:00:00.000Z	100 \| moderate	5.887 \| good	25.436 \| good	69.507 \| fine	0.124 \| good	0.373 \| good	0.11 \| good
2026-07-25T21:00:00.000Z	90 \| moderate	6.7 \| good	29.945 \| good	67.353 \| fine	0.118 \| good	0.419 \| good	0.109 \| 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

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Frequently asked questions

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

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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?

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