What is the current concentration of PM10 in Centennial, Colorado?

The current PM10 concentration at Centennial, Colorado is 11.37 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Centennial, Colorado is 1.085 ppb.

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

The current ozone (O3) concentration at Centennial, Colorado is 24.812 ppm.

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

The current nitrogen dioxide (NO2) concentration at Centennial, Colorado is 24.781 ppb.

Centennial, Colorado live air quality index now

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

The current PM2.5 concentration at Centennial, Colorado is 2.965 μg/m3.

Stay updated with real-time air quality in Centennial, 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

Centennial, Colorado

Last updated: ... (Local time)

Major air pollutants in Centennial, Colorado

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

2.96 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

11.37 μg/m³

155

255

425

605+

Ozone (O₃)

24.81 ppb

201

201+

Sulfur Dioxide (SO₂)

1.08 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

24.78 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.40 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

Centennial, Colorado

Get Live Pollen Counts

Centennial, Colorado

Scroll To Air Quality Map

Track live Centennial, Colorado air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-20T22:00:00.000Z	40 \| good	7.348 \| good	32.072 \| good	43.079 \| good	1.085 \| good	10.718 \| good	0.24 \| good
2026-10-20T23:00:00.000Z	42 \| good	5.832 \| good	25.12 \| good	45.008 \| good	0.923 \| good	11.12 \| good	0.24 \| good
2026-10-21T00:00:00.000Z	42 \| good	4.686 \| good	23.182 \| good	44.711 \| good	0.868 \| good	11.338 \| good	0.194 \| good
2026-10-21T01:00:00.000Z	38 \| good	3.984 \| good	19.621 \| good	40.948 \| good	0.788 \| good	28.423 \| good	0.548 \| good
2026-10-21T02:00:00.000Z	42 \| good	4.3 \| good	18.636 \| good	32.427 \| good	1.042 \| good	44.214 \| good	0.846 \| good
2026-10-21T03:00:00.000Z	28 \| good	3.11 \| good	12.715 \| good	30.157 \| good	0.59 \| good	25.827 \| good	0.229 \| good
2026-10-21T04:00:00.000Z	35 \| good	5.451 \| good	22.077 \| good	28.646 \| good	0.998 \| good	37.165 \| good	0.698 \| good
2026-10-21T05:00:00.000Z	35 \| good	4.939 \| good	19.77 \| good	28.898 \| good	0.864 \| good	36.578 \| good	0.507 \| good
2026-10-21T06:00:00.000Z	33 \| good	5.606 \| good	15.78 \| good	30.178 \| good	1.157 \| good	30.749 \| good	0.533 \| good
2026-10-21T07:00:00.000Z	33 \| good	5.998 \| good	14.715 \| good	32.577 \| good	1.292 \| good	26.282 \| good	0.35 \| good
2026-10-21T08:00:00.000Z	29 \| good	5.242 \| good	20.727 \| good	31.156 \| good	0.991 \| good	22.584 \| good	0.317 \| good
2026-10-21T09:00:00.000Z	30 \| good	4.687 \| good	18.233 \| good	32.021 \| good	0.925 \| good	19.699 \| good	0.281 \| good
2026-10-21T10:00:00.000Z	29 \| good	5.148 \| good	19.144 \| good	30.826 \| good	0.9 \| good	21.166 \| good	0.323 \| good
2026-10-21T11:00:00.000Z	33 \| good	5.594 \| good	19.823 \| good	30.946 \| good	0.85 \| good	22.322 \| good	0.462 \| good
2026-10-21T12:00:00.000Z	33 \| good	6.317 \| good	26.767 \| good	31.875 \| good	0.812 \| good	21.206 \| good	0.559 \| good
2026-10-21T13:00:00.000Z	33 \| good	6.233 \| good	24.665 \| good	31.259 \| good	1.075 \| good	24.701 \| good	0.634 \| good
2026-10-21T14:00:00.000Z	33 \| good	6.338 \| good	28.099 \| good	28.778 \| good	1.469 \| good	27.509 \| good	0.514 \| good
2026-10-21T15:00:00.000Z	33 \| good	6.364 \| good	27.465 \| good	30.185 \| good	1.478 \| good	26.622 \| good	0.58 \| good
2026-10-21T16:00:00.000Z	33 \| good	6.218 \| good	26.948 \| good	29.486 \| good	1.633 \| good	23.25 \| good	0.445 \| good
2026-10-21T17:00:00.000Z	34 \| good	5.847 \| good	23.841 \| good	36.965 \| good	1.214 \| good	16.479 \| good	0.335 \| good
2026-10-21T18:00:00.000Z	36 \| good	5.232 \| good	21.248 \| good	39.478 \| good	1.177 \| good	14.149 \| good	0.335 \| good
2026-10-21T19:00:00.000Z	40 \| good	4.212 \| good	22.024 \| good	42.873 \| good	0.763 \| good	7.455 \| good	0.19 \| good
2026-10-21T20:00:00.000Z	43 \| good	3.849 \| good	21.011 \| good	45.852 \| good	0.711 \| good	7.719 \| good	0.183 \| good
2026-10-21T21:00:00.000Z	45 \| good	3.909 \| good	18.786 \| good	48.716 \| good	0.514 \| good	6.8 \| good	0.149 \| good
2026-10-21T22:00:00.000Z	46 \| good	3.456 \| good	15.106 \| good	50.347 \| good	0.51 \| good	7.801 \| good	0.204 \| good
2026-10-21T23:00:00.000Z	47 \| good	3.504 \| good	16.148 \| good	51.337 \| good	0.416 \| good	9.387 \| good	0.197 \| good
2026-10-22T00:00:00.000Z	44 \| good	3.247 \| good	15.365 \| good	46.588 \| good	0.779 \| good	12.634 \| good	0.26 \| good
2026-10-22T01:00:00.000Z	42 \| good	2.854 \| good	15.966 \| good	45.093 \| good	0.565 \| good	17.845 \| good	0.412 \| good
2026-10-22T02:00:00.000Z	37 \| good	2.637 \| good	12.788 \| good	39.848 \| good	0.348 \| good	13.907 \| good	0.352 \| good
2026-10-22T03:00:00.000Z	31 \| good	1.016 \| good	3.793 \| good	32.755 \| good	0.376 \| good	20.507 \| good	0.214 \| good
2026-10-22T04:00:00.000Z	35 \| good	1.632 \| good	6.531 \| good	37.781 \| good	0.898 \| good	9.204 \| good	0.305 \| good
2026-10-22T05:00:00.000Z	35 \| good	1.532 \| good	6.574 \| good	38.213 \| good	0.764 \| good	8.038 \| good	0.269 \| good
2026-10-22T06:00:00.000Z	33 \| good	1.353 \| good	5.637 \| good	35.816 \| good	0.598 \| good	7.967 \| good	0.194 \| good
2026-10-22T07:00:00.000Z	32 \| good	1.106 \| good	4.602 \| good	34.863 \| good	0.672 \| good	8.12 \| good	0.14 \| good
2026-10-22T08:00:00.000Z	31 \| good	0.935 \| good	3.957 \| good	34.112 \| good	0.583 \| good	9.386 \| good	0.141 \| good
2026-10-22T09:00:00.000Z	30 \| good	0.675 \| good	2.745 \| good	31.54 \| good	0.856 \| good	6.959 \| good	0.11 \| good
2026-10-22T10:00:00.000Z	30 \| good	0.817 \| good	3.551 \| good	31.661 \| good	0.662 \| good	11.034 \| good	0.178 \| good
2026-10-22T11:00:00.000Z	26 \| good	0.92 \| good	4.498 \| good	27.562 \| good	0.397 \| good	10.16 \| good	0.237 \| good
2026-10-22T12:00:00.000Z	25 \| good	1.591 \| good	7.424 \| good	27.291 \| good	0.614 \| good	16.58 \| good	0.237 \| good
2026-10-22T13:00:00.000Z	25 \| good	2.046 \| good	8.433 \| good	24.918 \| good	0.602 \| good	26.401 \| good	0.522 \| good
2026-10-22T14:00:00.000Z	26 \| good	2.715 \| good	12.313 \| good	20.252 \| good	0.677 \| good	27.624 \| good	0.453 \| good
2026-10-22T15:00:00.000Z	28 \| good	3.568 \| good	17.104 \| good	19.379 \| good	0.917 \| good	29.547 \| good	0.724 \| good
2026-10-22T16:00:00.000Z	32 \| good	4.549 \| good	20.942 \| good	18.859 \| good	1.301 \| good	34.127 \| good	0.574 \| good
2026-10-22T17:00:00.000Z	30 \| good	5.395 \| good	18.631 \| good	22.543 \| good	1.319 \| good	32.132 \| good	0.493 \| good
2026-10-22T18:00:00.000Z	27 \| good	4.684 \| good	19.818 \| good	25.513 \| good	1.237 \| good	24.023 \| good	0.364 \| good
2026-10-22T19:00:00.000Z	25 \| good	3.58 \| good	16.777 \| good	27.187 \| good	0.947 \| good	19.92 \| good	0.357 \| good
2026-10-22T20:00:00.000Z	24 \| good	2.965 \| good	11.37 \| good	24.812 \| good	1.085 \| good	24.781 \| good	0.397 \| good
2026-10-22T21:00:00.000Z	24 \| good	2.965 \| good	11.37 \| good	24.812 \| good	1.085 \| good	24.781 \| good	0.397 \| good
2026-10-22T22:00:00.000Z	33 \| good	2.645 \| good	10.821 \| good	35.536 \| good	0.346 \| good	1.803 \| good	0.098 \| good
2026-10-22T23:00:00.000Z	29 \| good	3.139 \| good	13.437 \| good	31.224 \| good	0.337 \| good	2.008 \| good	0.101 \| good
2026-10-23T00:00:00.000Z	28 \| good	1.471 \| good	5.887 \| good	29.961 \| good	0.357 \| good	6.726 \| good	0.13 \| good
2026-10-23T01:00:00.000Z	26 \| good	0.582 \| good	2.415 \| good	27.905 \| good	0.426 \| good	13.865 \| good	0.181 \| good
2026-10-23T02:00:00.000Z	31 \| good	0.483 \| good	1.604 \| good	33.369 \| good	0.441 \| good	13.9 \| good	0.196 \| good
2026-10-23T03:00:00.000Z	37 \| good	0.2 \| good	0.512 \| good	40.331 \| good	0.394 \| good	13.414 \| good	0.183 \| good
2026-10-23T04:00:00.000Z	39 \| good	0.455 \| good	1.951 \| good	41.872 \| good	0.36 \| good	12.778 \| good	0.171 \| good
2026-10-23T05:00:00.000Z	35 \| good	0.482 \| good	1.951 \| good	38.41 \| good	0.331 \| good	11.788 \| good	0.161 \| good
2026-10-23T06:00:00.000Z	36 \| good	0.154 \| good	0.247 \| good	38.954 \| good	0.298 \| good	10.176 \| good	0.15 \| good
2026-10-23T07:00:00.000Z	33 \| good	0.264 \| good	0.993 \| good	36.37 \| good	0.269 \| good	7.656 \| good	0.137 \| good
2026-10-23T08:00:00.000Z	31 \| good	0.57 \| good	2.025 \| good	33.237 \| good	0.256 \| good	5.167 \| good	0.124 \| good
2026-10-23T09:00:00.000Z	30 \| good	0.812 \| good	3.245 \| good	31.551 \| good	0.245 \| good	3.239 \| good	0.114 \| good
2026-10-23T10:00:00.000Z	32 \| good	1.178 \| good	4.965 \| good	34.542 \| good	0.234 \| good	2.295 \| good	0.11 \| good
2026-10-23T11:00:00.000Z	31 \| good	0.943 \| good	3.677 \| good	34.319 \| good	0.223 \| good	1.973 \| good	0.109 \| good
2026-10-23T12:00:00.000Z	32 \| good	1.651 \| good	6.667 \| good	34.754 \| good	0.213 \| good	1.978 \| good	0.11 \| good
2026-10-23T13:00:00.000Z	30 \| good	2.23 \| good	9.24 \| good	32.224 \| good	0.211 \| good	2.667 \| good	0.115 \| good
2026-10-23T14:00:00.000Z	28 \| good	2.672 \| good	10.822 \| good	30.473 \| good	0.217 \| good	3.767 \| good	0.123 \| good
2026-10-23T15:00:00.000Z	31 \| good	1.555 \| good	6.381 \| good	33.984 \| good	0.214 \| good	3.391 \| good	0.126 \| good
2026-10-23T16:00:00.000Z	36 \| good	0.649 \| good	2.343 \| good	39.045 \| good	0.202 \| good	2.253 \| good	0.12 \| good
2026-10-23T17:00:00.000Z	39 \| good	0.419 \| good	1.799 \| good	42.364 \| good	0.178 \| good	1.151 \| good	0.11 \| good
2026-10-23T18:00:00.000Z	44 \| good	0.161 \| good	0.181 \| good	46.649 \| good	0.157 \| good	0.729 \| good	0.105 \| good
2026-10-23T19:00:00.000Z	44 \| good	0.842 \| good	3 \| good	48.348 \| good	0.143 \| good	0.598 \| good	0.102 \| good
2026-10-23T20:00:00.000Z	45 \| good	1.526 \| good	6.465 \| good	49.424 \| good	0.132 \| good	0.559 \| good	0.1 \| good
2026-10-23T21:00:00.000Z	46 \| good	1.844 \| good	7.607 \| good	49.545 \| good	0.123 \| good	0.572 \| good	0.099 \| good
2026-10-23T22:00:00.000Z	46 \| good	1.581 \| good	6.667 \| good	49.737 \| good	0.118 \| good	0.659 \| good	0.098 \| good
2026-10-23T23:00:00.000Z	44 \| good	1.176 \| good	4.775 \| good	48.326 \| good	0.119 \| good	0.914 \| good	0.098 \| good
2026-10-24T00:00:00.000Z	38 \| good	0.753 \| good	2.914 \| good	41.022 \| good	0.146 \| good	4.038 \| good	0.116 \| good
2026-10-24T01:00:00.000Z	31 \| good	0.506 \| good	2.025 \| good	34.172 \| good	0.209 \| good	10.612 \| good	0.147 \| good
2026-10-24T02:00:00.000Z	33 \| good	0.782 \| good	2.856 \| good	36.415 \| good	0.244 \| good	13.761 \| good	0.164 \| good
2026-10-24T03:00:00.000Z	29 \| good	1.089 \| good	4.237 \| good	31.124 \| good	0.254 \| good	14.164 \| good	0.169 \| good
2026-10-24T04:00:00.000Z	27 \| good	1.236 \| good	4.944 \| good	29.098 \| good	0.257 \| good	14.059 \| good	0.171 \| good
2026-10-24T05:00:00.000Z	23 \| good	2.598 \| good	10.667 \| good	24.704 \| good	0.257 \| good	14.41 \| good	0.175 \| good
2026-10-24T06:00:00.000Z	38 \| good	7.176 \| good	31.868 \| good	27.197 \| good	0.245 \| good	14.12 \| good	0.179 \| good
2026-10-24T07:00:00.000Z	56 \| moderate	12.235 \| fine	54.274 \| good	26.248 \| good	0.23 \| good	13.359 \| good	0.18 \| good
2026-10-24T08:00:00.000Z	62 \| moderate	15.232 \| fine	67.792 \| fine	27.131 \| good	0.219 \| good	13.618 \| good	0.171 \| good
2026-10-24T09:00:00.000Z	64 \| moderate	15.554 \| fine	69.362 \| fine	27.678 \| good	0.216 \| good	14.796 \| good	0.166 \| good
2026-10-24T10:00:00.000Z	64 \| moderate	15.935 \| fine	71.004 \| fine	26.422 \| good	0.22 \| good	14.185 \| good	0.163 \| good
2026-10-24T11:00:00.000Z	71 \| moderate	19.621 \| fine	85.93 \| fine	28.059 \| good	0.224 \| good	11.634 \| good	0.153 \| good
2026-10-24T12:00:00.000Z	75 \| moderate	21.793 \| fine	95.525 \| fine	29.852 \| good	0.227 \| good	9.419 \| good	0.144 \| good
2026-10-24T13:00:00.000Z	75 \| moderate	21.781 \| fine	95.192 \| fine	28.091 \| good	0.239 \| good	9.052 \| good	0.143 \| good
2026-10-24T14:00:00.000Z	69 \| moderate	19.351 \| fine	85.645 \| fine	31.84 \| good	0.268 \| good	9.061 \| good	0.149 \| good
2026-10-24T15:00:00.000Z	52 \| moderate	9.697 \| good	43.323 \| good	37.978 \| good	0.284 \| good	3.662 \| good	0.13 \| good
2026-10-24T16:00:00.000Z	34 \| good	5.727 \| good	25.045 \| good	37.108 \| good	0.367 \| good	2.644 \| good	0.132 \| good
2026-10-24T17:00:00.000Z	31 \| good	5.264 \| good	23.121 \| good	33.03 \| good	0.455 \| good	2.307 \| good	0.136 \| good
2026-10-24T18:00:00.000Z	33 \| good	4.368 \| good	19.036 \| good	35.708 \| good	0.522 \| good	2.005 \| good	0.138 \| good
2026-10-24T19:00:00.000Z	37 \| good	4.329 \| good	18.857 \| good	39.883 \| good	0.571 \| good	1.94 \| good	0.14 \| good
2026-10-24T20:00:00.000Z	37 \| good	5.199 \| good	22.354 \| good	40.11 \| good	0.589 \| good	1.93 \| good	0.141 \| good
2026-10-24T21:00:00.000Z	39 \| good	5.822 \| good	25.892 \| good	42.264 \| good	0.579 \| good	1.958 \| good	0.141 \| good

Centennial

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Centennial, Colorado air quality map: Track AQI near you

0.35ppm

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 Centennial, Colorado updated?

The air quality for Centennial, Colorado is updated every hour.

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

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

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

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

What is the current air quality in Centennial, Colorado?

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

What pollutant is the most common in Centennial, Colorado?

The most common pollutant in Centennial, Colorado is NO2.

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

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

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

The current PM_2.5 concentration at Centennial, Colorado is 2.965 μg/m³.

What is the current concentration of PM₁₀ in Centennial, Colorado?

The current PM₁₀ concentration at Centennial, Colorado is 11.37 μg/m³.

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

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

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

The current sulfur dioxide (SO₂) concentration at Centennial, Colorado is 1.085 ppb.

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

The current ozone (O₃) concentration at Centennial, Colorado is 24.812 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Centennial, Colorado is 24.781 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-20T22:00:00.000Z	40 \| good	7.348 \| good	32.072 \| good	43.079 \| good	1.085 \| good	10.718 \| good	0.24 \| good
2026-10-20T23:00:00.000Z	42 \| good	5.832 \| good	25.12 \| good	45.008 \| good	0.923 \| good	11.12 \| good	0.24 \| good
2026-10-21T00:00:00.000Z	42 \| good	4.686 \| good	23.182 \| good	44.711 \| good	0.868 \| good	11.338 \| good	0.194 \| good
2026-10-21T01:00:00.000Z	38 \| good	3.984 \| good	19.621 \| good	40.948 \| good	0.788 \| good	28.423 \| good	0.548 \| good
2026-10-21T02:00:00.000Z	42 \| good	4.3 \| good	18.636 \| good	32.427 \| good	1.042 \| good	44.214 \| good	0.846 \| good
2026-10-21T03:00:00.000Z	28 \| good	3.11 \| good	12.715 \| good	30.157 \| good	0.59 \| good	25.827 \| good	0.229 \| good
2026-10-21T04:00:00.000Z	35 \| good	5.451 \| good	22.077 \| good	28.646 \| good	0.998 \| good	37.165 \| good	0.698 \| good
2026-10-21T05:00:00.000Z	35 \| good	4.939 \| good	19.77 \| good	28.898 \| good	0.864 \| good	36.578 \| good	0.507 \| good
2026-10-21T06:00:00.000Z	33 \| good	5.606 \| good	15.78 \| good	30.178 \| good	1.157 \| good	30.749 \| good	0.533 \| good
2026-10-21T07:00:00.000Z	33 \| good	5.998 \| good	14.715 \| good	32.577 \| good	1.292 \| good	26.282 \| good	0.35 \| good
2026-10-21T08:00:00.000Z	29 \| good	5.242 \| good	20.727 \| good	31.156 \| good	0.991 \| good	22.584 \| good	0.317 \| good
2026-10-21T09:00:00.000Z	30 \| good	4.687 \| good	18.233 \| good	32.021 \| good	0.925 \| good	19.699 \| good	0.281 \| good
2026-10-21T10:00:00.000Z	29 \| good	5.148 \| good	19.144 \| good	30.826 \| good	0.9 \| good	21.166 \| good	0.323 \| good
2026-10-21T11:00:00.000Z	33 \| good	5.594 \| good	19.823 \| good	30.946 \| good	0.85 \| good	22.322 \| good	0.462 \| good
2026-10-21T12:00:00.000Z	33 \| good	6.317 \| good	26.767 \| good	31.875 \| good	0.812 \| good	21.206 \| good	0.559 \| good
2026-10-21T13:00:00.000Z	33 \| good	6.233 \| good	24.665 \| good	31.259 \| good	1.075 \| good	24.701 \| good	0.634 \| good
2026-10-21T14:00:00.000Z	33 \| good	6.338 \| good	28.099 \| good	28.778 \| good	1.469 \| good	27.509 \| good	0.514 \| good
2026-10-21T15:00:00.000Z	33 \| good	6.364 \| good	27.465 \| good	30.185 \| good	1.478 \| good	26.622 \| good	0.58 \| good
2026-10-21T16:00:00.000Z	33 \| good	6.218 \| good	26.948 \| good	29.486 \| good	1.633 \| good	23.25 \| good	0.445 \| good
2026-10-21T17:00:00.000Z	34 \| good	5.847 \| good	23.841 \| good	36.965 \| good	1.214 \| good	16.479 \| good	0.335 \| good
2026-10-21T18:00:00.000Z	36 \| good	5.232 \| good	21.248 \| good	39.478 \| good	1.177 \| good	14.149 \| good	0.335 \| good
2026-10-21T19:00:00.000Z	40 \| good	4.212 \| good	22.024 \| good	42.873 \| good	0.763 \| good	7.455 \| good	0.19 \| good
2026-10-21T20:00:00.000Z	43 \| good	3.849 \| good	21.011 \| good	45.852 \| good	0.711 \| good	7.719 \| good	0.183 \| good
2026-10-21T21:00:00.000Z	45 \| good	3.909 \| good	18.786 \| good	48.716 \| good	0.514 \| good	6.8 \| good	0.149 \| good
2026-10-21T22:00:00.000Z	46 \| good	3.456 \| good	15.106 \| good	50.347 \| good	0.51 \| good	7.801 \| good	0.204 \| good
2026-10-21T23:00:00.000Z	47 \| good	3.504 \| good	16.148 \| good	51.337 \| good	0.416 \| good	9.387 \| good	0.197 \| good
2026-10-22T00:00:00.000Z	44 \| good	3.247 \| good	15.365 \| good	46.588 \| good	0.779 \| good	12.634 \| good	0.26 \| good
2026-10-22T01:00:00.000Z	42 \| good	2.854 \| good	15.966 \| good	45.093 \| good	0.565 \| good	17.845 \| good	0.412 \| good
2026-10-22T02:00:00.000Z	37 \| good	2.637 \| good	12.788 \| good	39.848 \| good	0.348 \| good	13.907 \| good	0.352 \| good
2026-10-22T03:00:00.000Z	31 \| good	1.016 \| good	3.793 \| good	32.755 \| good	0.376 \| good	20.507 \| good	0.214 \| good
2026-10-22T04:00:00.000Z	35 \| good	1.632 \| good	6.531 \| good	37.781 \| good	0.898 \| good	9.204 \| good	0.305 \| good
2026-10-22T05:00:00.000Z	35 \| good	1.532 \| good	6.574 \| good	38.213 \| good	0.764 \| good	8.038 \| good	0.269 \| good
2026-10-22T06:00:00.000Z	33 \| good	1.353 \| good	5.637 \| good	35.816 \| good	0.598 \| good	7.967 \| good	0.194 \| good
2026-10-22T07:00:00.000Z	32 \| good	1.106 \| good	4.602 \| good	34.863 \| good	0.672 \| good	8.12 \| good	0.14 \| good
2026-10-22T08:00:00.000Z	31 \| good	0.935 \| good	3.957 \| good	34.112 \| good	0.583 \| good	9.386 \| good	0.141 \| good
2026-10-22T09:00:00.000Z	30 \| good	0.675 \| good	2.745 \| good	31.54 \| good	0.856 \| good	6.959 \| good	0.11 \| good
2026-10-22T10:00:00.000Z	30 \| good	0.817 \| good	3.551 \| good	31.661 \| good	0.662 \| good	11.034 \| good	0.178 \| good
2026-10-22T11:00:00.000Z	26 \| good	0.92 \| good	4.498 \| good	27.562 \| good	0.397 \| good	10.16 \| good	0.237 \| good
2026-10-22T12:00:00.000Z	25 \| good	1.591 \| good	7.424 \| good	27.291 \| good	0.614 \| good	16.58 \| good	0.237 \| good
2026-10-22T13:00:00.000Z	25 \| good	2.046 \| good	8.433 \| good	24.918 \| good	0.602 \| good	26.401 \| good	0.522 \| good
2026-10-22T14:00:00.000Z	26 \| good	2.715 \| good	12.313 \| good	20.252 \| good	0.677 \| good	27.624 \| good	0.453 \| good
2026-10-22T15:00:00.000Z	28 \| good	3.568 \| good	17.104 \| good	19.379 \| good	0.917 \| good	29.547 \| good	0.724 \| good
2026-10-22T16:00:00.000Z	32 \| good	4.549 \| good	20.942 \| good	18.859 \| good	1.301 \| good	34.127 \| good	0.574 \| good
2026-10-22T17:00:00.000Z	30 \| good	5.395 \| good	18.631 \| good	22.543 \| good	1.319 \| good	32.132 \| good	0.493 \| good
2026-10-22T18:00:00.000Z	27 \| good	4.684 \| good	19.818 \| good	25.513 \| good	1.237 \| good	24.023 \| good	0.364 \| good
2026-10-22T19:00:00.000Z	25 \| good	3.58 \| good	16.777 \| good	27.187 \| good	0.947 \| good	19.92 \| good	0.357 \| good
2026-10-22T20:00:00.000Z	24 \| good	2.965 \| good	11.37 \| good	24.812 \| good	1.085 \| good	24.781 \| good	0.397 \| good
2026-10-22T21:00:00.000Z	24 \| good	2.965 \| good	11.37 \| good	24.812 \| good	1.085 \| good	24.781 \| good	0.397 \| good
2026-10-22T22:00:00.000Z	33 \| good	2.645 \| good	10.821 \| good	35.536 \| good	0.346 \| good	1.803 \| good	0.098 \| good
2026-10-22T23:00:00.000Z	29 \| good	3.139 \| good	13.437 \| good	31.224 \| good	0.337 \| good	2.008 \| good	0.101 \| good
2026-10-23T00:00:00.000Z	28 \| good	1.471 \| good	5.887 \| good	29.961 \| good	0.357 \| good	6.726 \| good	0.13 \| good
2026-10-23T01:00:00.000Z	26 \| good	0.582 \| good	2.415 \| good	27.905 \| good	0.426 \| good	13.865 \| good	0.181 \| good
2026-10-23T02:00:00.000Z	31 \| good	0.483 \| good	1.604 \| good	33.369 \| good	0.441 \| good	13.9 \| good	0.196 \| good
2026-10-23T03:00:00.000Z	37 \| good	0.2 \| good	0.512 \| good	40.331 \| good	0.394 \| good	13.414 \| good	0.183 \| good
2026-10-23T04:00:00.000Z	39 \| good	0.455 \| good	1.951 \| good	41.872 \| good	0.36 \| good	12.778 \| good	0.171 \| good
2026-10-23T05:00:00.000Z	35 \| good	0.482 \| good	1.951 \| good	38.41 \| good	0.331 \| good	11.788 \| good	0.161 \| good
2026-10-23T06:00:00.000Z	36 \| good	0.154 \| good	0.247 \| good	38.954 \| good	0.298 \| good	10.176 \| good	0.15 \| good
2026-10-23T07:00:00.000Z	33 \| good	0.264 \| good	0.993 \| good	36.37 \| good	0.269 \| good	7.656 \| good	0.137 \| good
2026-10-23T08:00:00.000Z	31 \| good	0.57 \| good	2.025 \| good	33.237 \| good	0.256 \| good	5.167 \| good	0.124 \| good
2026-10-23T09:00:00.000Z	30 \| good	0.812 \| good	3.245 \| good	31.551 \| good	0.245 \| good	3.239 \| good	0.114 \| good
2026-10-23T10:00:00.000Z	32 \| good	1.178 \| good	4.965 \| good	34.542 \| good	0.234 \| good	2.295 \| good	0.11 \| good
2026-10-23T11:00:00.000Z	31 \| good	0.943 \| good	3.677 \| good	34.319 \| good	0.223 \| good	1.973 \| good	0.109 \| good
2026-10-23T12:00:00.000Z	32 \| good	1.651 \| good	6.667 \| good	34.754 \| good	0.213 \| good	1.978 \| good	0.11 \| good
2026-10-23T13:00:00.000Z	30 \| good	2.23 \| good	9.24 \| good	32.224 \| good	0.211 \| good	2.667 \| good	0.115 \| good
2026-10-23T14:00:00.000Z	28 \| good	2.672 \| good	10.822 \| good	30.473 \| good	0.217 \| good	3.767 \| good	0.123 \| good
2026-10-23T15:00:00.000Z	31 \| good	1.555 \| good	6.381 \| good	33.984 \| good	0.214 \| good	3.391 \| good	0.126 \| good
2026-10-23T16:00:00.000Z	36 \| good	0.649 \| good	2.343 \| good	39.045 \| good	0.202 \| good	2.253 \| good	0.12 \| good
2026-10-23T17:00:00.000Z	39 \| good	0.419 \| good	1.799 \| good	42.364 \| good	0.178 \| good	1.151 \| good	0.11 \| good
2026-10-23T18:00:00.000Z	44 \| good	0.161 \| good	0.181 \| good	46.649 \| good	0.157 \| good	0.729 \| good	0.105 \| good
2026-10-23T19:00:00.000Z	44 \| good	0.842 \| good	3 \| good	48.348 \| good	0.143 \| good	0.598 \| good	0.102 \| good
2026-10-23T20:00:00.000Z	45 \| good	1.526 \| good	6.465 \| good	49.424 \| good	0.132 \| good	0.559 \| good	0.1 \| good
2026-10-23T21:00:00.000Z	46 \| good	1.844 \| good	7.607 \| good	49.545 \| good	0.123 \| good	0.572 \| good	0.099 \| good
2026-10-23T22:00:00.000Z	46 \| good	1.581 \| good	6.667 \| good	49.737 \| good	0.118 \| good	0.659 \| good	0.098 \| good
2026-10-23T23:00:00.000Z	44 \| good	1.176 \| good	4.775 \| good	48.326 \| good	0.119 \| good	0.914 \| good	0.098 \| good
2026-10-24T00:00:00.000Z	38 \| good	0.753 \| good	2.914 \| good	41.022 \| good	0.146 \| good	4.038 \| good	0.116 \| good
2026-10-24T01:00:00.000Z	31 \| good	0.506 \| good	2.025 \| good	34.172 \| good	0.209 \| good	10.612 \| good	0.147 \| good
2026-10-24T02:00:00.000Z	33 \| good	0.782 \| good	2.856 \| good	36.415 \| good	0.244 \| good	13.761 \| good	0.164 \| good
2026-10-24T03:00:00.000Z	29 \| good	1.089 \| good	4.237 \| good	31.124 \| good	0.254 \| good	14.164 \| good	0.169 \| good
2026-10-24T04:00:00.000Z	27 \| good	1.236 \| good	4.944 \| good	29.098 \| good	0.257 \| good	14.059 \| good	0.171 \| good
2026-10-24T05:00:00.000Z	23 \| good	2.598 \| good	10.667 \| good	24.704 \| good	0.257 \| good	14.41 \| good	0.175 \| good
2026-10-24T06:00:00.000Z	38 \| good	7.176 \| good	31.868 \| good	27.197 \| good	0.245 \| good	14.12 \| good	0.179 \| good
2026-10-24T07:00:00.000Z	56 \| moderate	12.235 \| fine	54.274 \| good	26.248 \| good	0.23 \| good	13.359 \| good	0.18 \| good
2026-10-24T08:00:00.000Z	62 \| moderate	15.232 \| fine	67.792 \| fine	27.131 \| good	0.219 \| good	13.618 \| good	0.171 \| good
2026-10-24T09:00:00.000Z	64 \| moderate	15.554 \| fine	69.362 \| fine	27.678 \| good	0.216 \| good	14.796 \| good	0.166 \| good
2026-10-24T10:00:00.000Z	64 \| moderate	15.935 \| fine	71.004 \| fine	26.422 \| good	0.22 \| good	14.185 \| good	0.163 \| good
2026-10-24T11:00:00.000Z	71 \| moderate	19.621 \| fine	85.93 \| fine	28.059 \| good	0.224 \| good	11.634 \| good	0.153 \| good
2026-10-24T12:00:00.000Z	75 \| moderate	21.793 \| fine	95.525 \| fine	29.852 \| good	0.227 \| good	9.419 \| good	0.144 \| good
2026-10-24T13:00:00.000Z	75 \| moderate	21.781 \| fine	95.192 \| fine	28.091 \| good	0.239 \| good	9.052 \| good	0.143 \| good
2026-10-24T14:00:00.000Z	69 \| moderate	19.351 \| fine	85.645 \| fine	31.84 \| good	0.268 \| good	9.061 \| good	0.149 \| good
2026-10-24T15:00:00.000Z	52 \| moderate	9.697 \| good	43.323 \| good	37.978 \| good	0.284 \| good	3.662 \| good	0.13 \| good
2026-10-24T16:00:00.000Z	34 \| good	5.727 \| good	25.045 \| good	37.108 \| good	0.367 \| good	2.644 \| good	0.132 \| good
2026-10-24T17:00:00.000Z	31 \| good	5.264 \| good	23.121 \| good	33.03 \| good	0.455 \| good	2.307 \| good	0.136 \| good
2026-10-24T18:00:00.000Z	33 \| good	4.368 \| good	19.036 \| good	35.708 \| good	0.522 \| good	2.005 \| good	0.138 \| good
2026-10-24T19:00:00.000Z	37 \| good	4.329 \| good	18.857 \| good	39.883 \| good	0.571 \| good	1.94 \| good	0.14 \| good
2026-10-24T20:00:00.000Z	37 \| good	5.199 \| good	22.354 \| good	40.11 \| good	0.589 \| good	1.93 \| good	0.141 \| good
2026-10-24T21:00:00.000Z	39 \| good	5.822 \| good	25.892 \| good	42.264 \| good	0.579 \| good	1.958 \| good	0.141 \| good

Centennial, Colorado live air quality index now

Major air pollutants in Centennial, Colorado

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Centennial, Colorado air quality map: Track AQI near you

Air quality in nearby cities

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Highlands Ranch, Colorado

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Englewood, Colorado

Parker, Colorado

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What is the current concentration of PM10 in Centennial, Colorado?

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

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

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