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

The current PM10 concentration at Louisville, Colorado is 20.031 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Louisville, Colorado is 0.375 ppb.

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

The current ozone (O3) concentration at Louisville, Colorado is 41.15 ppm.

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

The current nitrogen dioxide (NO2) concentration at Louisville, Colorado is 19.414 ppb.

Louisville, Colorado live air quality index now

Name: Live air pollution levels in Louisville, Colorado today
Creator: Ambee

Stay updated with real-time air quality in Louisville, 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

Louisville, Colorado

Last updated: ... (Local time)

Major air pollutants in Louisville, Colorado

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

4.30 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

20.03 μg/m³

155

255

425

605+

Ozone (O₃)

41.15 ppb

201

201+

Sulfur Dioxide (SO₂)

0.38 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

19.41 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.32 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Louisville, Colorado

Get Live Pollen Counts

Louisville, Colorado

Scroll To Air Quality Map

Track live Louisville, Colorado air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-10-20T08:00:00.000Z	46 \| good	3.135 \| good	19.36 \| good	49.505 \| good	0.889 \| good	13.822 \| good	0.234 \| good
2025-10-20T09:00:00.000Z	49 \| good	9.337 \| good	35.039 \| good	49.316 \| good	0.643 \| good	11.445 \| good	0.175 \| good
2025-10-20T10:00:00.000Z	46 \| good	2.462 \| good	16.887 \| good	50.189 \| good	0.581 \| good	12.258 \| good	0.159 \| good
2025-10-20T11:00:00.000Z	45 \| good	2.358 \| good	14.351 \| good	48.81 \| good	0.647 \| good	14.573 \| good	0.131 \| good
2025-10-20T12:00:00.000Z	42 \| good	2.409 \| good	13.294 \| good	45.497 \| good	0.575 \| good	13.324 \| good	0.131 \| good
2025-10-20T13:00:00.000Z	43 \| good	2.345 \| good	13.716 \| good	45.902 \| good	0.428 \| good	11.936 \| good	0.166 \| good
2025-10-20T14:00:00.000Z	43 \| good	2.225 \| good	13.674 \| good	46.487 \| good	0.397 \| good	12.014 \| good	0.224 \| good
2025-10-20T15:00:00.000Z	43 \| good	3.888 \| good	18.004 \| good	46.445 \| good	0.399 \| good	8.476 \| good	0.162 \| good
2025-10-20T16:00:00.000Z	43 \| good	2.947 \| good	15.724 \| good	46.197 \| good	0.484 \| good	5.859 \| good	0.162 \| good
2025-10-20T17:00:00.000Z	44 \| good	2.947 \| good	24.278 \| good	46.55 \| good	0.359 \| good	5.22 \| good	0.159 \| good
2025-10-20T18:00:00.000Z	44 \| good	2.537 \| good	16.311 \| good	47.264 \| good	0.321 \| good	6.517 \| good	0.159 \| good
2025-10-20T19:00:00.000Z	44 \| good	2.168 \| good	13.987 \| good	47.375 \| good	0.319 \| good	6.638 \| good	0.159 \| good
2025-10-20T20:00:00.000Z	44 \| good	2.202 \| good	17.833 \| good	46.741 \| good	0.319 \| good	7.968 \| good	0.159 \| good
2025-10-20T21:00:00.000Z	44 \| good	1.836 \| good	11.797 \| good	47.716 \| good	0.317 \| good	8.961 \| good	0.159 \| good
2025-10-20T22:00:00.000Z	44 \| good	1.817 \| good	12.7 \| good	47.079 \| good	0.349 \| good	7.935 \| good	0.189 \| good
2025-10-20T23:00:00.000Z	44 \| good	1.712 \| good	8.986 \| good	47.085 \| good	0.349 \| good	4.891 \| good	0.193 \| good
2025-10-21T00:00:00.000Z	43 \| good	1.831 \| good	10.875 \| good	46.227 \| good	0.312 \| good	5.097 \| good	0.193 \| good
2025-10-21T01:00:00.000Z	44 \| good	2.021 \| good	12.276 \| good	46.614 \| good	0.311 \| good	5.45 \| good	0.193 \| good
2025-10-21T02:00:00.000Z	42 \| good	2.427 \| good	13.101 \| good	44.847 \| good	0.499 \| good	5.337 \| good	0.178 \| good
2025-10-21T03:00:00.000Z	36 \| good	0.48 \| good	1.454 \| good	39.122 \| good	0.405 \| good	7.084 \| good	0.144 \| good
2025-10-21T04:00:00.000Z	38 \| good	2.279 \| good	12.28 \| good	40.584 \| good	0.317 \| good	8.165 \| good	0.222 \| good
2025-10-21T05:00:00.000Z	38 \| good	2.798 \| good	13.234 \| good	40.709 \| good	0.913 \| good	9.968 \| good	0.238 \| good
2025-10-21T06:00:00.000Z	38 \| good	2.565 \| good	14.036 \| good	40.547 \| good	0.527 \| good	11.06 \| good	0.238 \| good
2025-10-21T07:00:00.000Z	38 \| good	2.878 \| good	13.391 \| good	41.266 \| good	0.309 \| good	7.663 \| good	0.175 \| good
2025-10-21T08:00:00.000Z	36 \| good	2.933 \| good	13.476 \| good	38.93 \| good	0.798 \| good	9.615 \| good	0.208 \| good
2025-10-21T09:00:00.000Z	35 \| good	3.073 \| good	12.954 \| good	38.111 \| good	0.709 \| good	9.266 \| good	0.208 \| good
2025-10-21T10:00:00.000Z	33 \| good	3.544 \| good	13.009 \| good	35.952 \| good	0.56 \| good	14.707 \| good	0.193 \| good
2025-10-21T11:00:00.000Z	31 \| good	3.275 \| good	15.454 \| good	33.932 \| good	0.554 \| good	17.649 \| good	0.208 \| good
2025-10-21T12:00:00.000Z	33 \| good	3.673 \| good	16.57 \| good	36.364 \| good	0.628 \| good	21.299 \| good	0.237 \| good
2025-10-21T13:00:00.000Z	32 \| good	3.682 \| good	16.78 \| good	34.77 \| good	0.876 \| good	27.268 \| good	0.33 \| good
2025-10-21T14:00:00.000Z	36 \| good	4.003 \| good	20.662 \| good	38.649 \| good	0.875 \| good	31.757 \| good	0.515 \| good
2025-10-21T15:00:00.000Z	37 \| good	5.106 \| good	24.051 \| good	40.441 \| good	1.154 \| good	24.421 \| good	0.507 \| good
2025-10-21T16:00:00.000Z	33 \| good	5.115 \| good	24.193 \| good	36.359 \| good	0.936 \| good	23.045 \| good	0.337 \| good
2025-10-21T17:00:00.000Z	32 \| good	4.233 \| good	20.1 \| good	35.293 \| good	0.804 \| good	22.283 \| good	0.256 \| good
2025-10-21T18:00:00.000Z	34 \| good	3.283 \| good	16.499 \| good	37.479 \| good	0.699 \| good	20.379 \| good	0.193 \| good
2025-10-21T19:00:00.000Z	37 \| good	3.37 \| good	16.758 \| good	40.032 \| good	0.612 \| good	17.333 \| good	0.178 \| good
2025-10-21T20:00:00.000Z	39 \| good	3.404 \| good	17.442 \| good	41.95 \| good	1.049 \| good	16.289 \| good	0.211 \| good
2025-10-21T21:00:00.000Z	41 \| good	3.718 \| good	19.117 \| good	43.708 \| good	0.79 \| good	16.25 \| good	0.241 \| good
2025-10-21T22:00:00.000Z	44 \| good	3.804 \| good	26.079 \| good	46.72 \| good	0.719 \| good	12.932 \| good	0.208 \| good
2025-10-21T23:00:00.000Z	44 \| good	3.966 \| good	35.764 \| good	48.423 \| good	0.608 \| good	13.8 \| good	0.208 \| good
2025-10-22T00:00:00.000Z	44 \| good	3.224 \| good	22.85 \| good	48.106 \| good	0.735 \| good	18.189 \| good	0.238 \| good
2025-10-22T01:00:00.000Z	42 \| good	4.129 \| good	35.817 \| good	44.601 \| good	0.667 \| good	34.15 \| good	0.517 \| good
2025-10-22T02:00:00.000Z	43 \| good	3.976 \| good	28.361 \| good	45.541 \| good	0.784 \| good	27.24 \| good	0.512 \| good
2025-10-22T03:00:00.000Z	26 \| good	3.659 \| good	15.761 \| good	27.59 \| good	0.95 \| good	16.911 \| good	0.232 \| good
2025-10-22T04:00:00.000Z	38 \| good	4.384 \| good	21.094 \| good	41.465 \| good	0.441 \| good	24.052 \| good	0.313 \| good
2025-10-22T05:00:00.000Z	37 \| good	4.087 \| good	18.629 \| good	40.347 \| good	0.405 \| good	24.757 \| good	0.268 \| good
2025-10-22T06:00:00.000Z	38 \| good	4.305 \| good	20.031 \| good	41.15 \| good	0.375 \| good	19.414 \| good	0.319 \| good
2025-10-22T07:00:00.000Z	38 \| good	4.305 \| good	20.031 \| good	41.15 \| good	0.375 \| good	19.414 \| good	0.319 \| good
2025-10-22T08:00:00.000Z	30 \| good	1.044 \| good	3.974 \| good	32.331 \| good	0.476 \| good	13.757 \| good	0.226 \| good
2025-10-22T09:00:00.000Z	30 \| good	0.799 \| good	3.065 \| good	32.046 \| good	0.361 \| good	11.201 \| good	0.207 \| good
2025-10-22T10:00:00.000Z	30 \| good	0.663 \| good	2.229 \| good	31.788 \| good	0.337 \| good	9.733 \| good	0.188 \| good
2025-10-22T11:00:00.000Z	29 \| good	0.582 \| good	2.036 \| good	31.212 \| good	0.313 \| good	8.265 \| good	0.169 \| good
2025-10-22T12:00:00.000Z	27 \| good	0.72 \| good	2.6 \| good	29.032 \| good	0.289 \| good	6.796 \| good	0.15 \| good
2025-10-22T13:00:00.000Z	24 \| good	1.061 \| good	4.429 \| good	26.245 \| good	0.326 \| good	6.932 \| good	0.168 \| good
2025-10-22T14:00:00.000Z	24 \| good	3.312 \| good	14.348 \| good	26.171 \| good	0.363 \| good	7.068 \| good	0.187 \| good
2025-10-22T15:00:00.000Z	28 \| good	5.284 \| good	22.698 \| good	30.33 \| good	0.4 \| good	7.204 \| good	0.205 \| good
2025-10-22T16:00:00.000Z	33 \| good	6.454 \| good	28.358 \| good	31.742 \| good	0.521 \| good	5.945 \| good	0.181 \| good
2025-10-22T17:00:00.000Z	38 \| good	7.172 \| good	31.418 \| good	34.853 \| good	0.641 \| good	4.686 \| good	0.156 \| good
2025-10-22T18:00:00.000Z	44 \| good	8.179 \| good	36.003 \| good	38.174 \| good	0.761 \| good	3.428 \| good	0.132 \| good
2025-10-22T19:00:00.000Z	44 \| good	7.636 \| good	33.589 \| good	40.11 \| good	0.882 \| good	3.545 \| good	0.132 \| good
2025-10-22T20:00:00.000Z	39 \| good	5.906 \| good	26.233 \| good	42.074 \| good	1.003 \| good	3.662 \| good	0.132 \| good
2025-10-22T21:00:00.000Z	40 \| good	5.395 \| good	23.8 \| good	43.386 \| good	1.124 \| good	3.779 \| good	0.132 \| good
2025-10-22T22:00:00.000Z	42 \| good	5.316 \| good	23.212 \| good	45.319 \| good	1.119 \| good	5.835 \| good	0.148 \| good
2025-10-22T23:00:00.000Z	52 \| moderate	10.058 \| good	44.757 \| good	44.154 \| good	1.114 \| good	7.891 \| good	0.163 \| good
2025-10-23T00:00:00.000Z	52 \| moderate	10.35 \| good	45.852 \| good	37.28 \| good	1.109 \| good	9.948 \| good	0.179 \| good
2025-10-23T01:00:00.000Z	56 \| moderate	11.598 \| good	51.53 \| good	31.669 \| good	1.27 \| good	12.353 \| good	0.2 \| good
2025-10-23T02:00:00.000Z	54 \| moderate	10.8 \| good	47.967 \| good	29.447 \| good	1.43 \| good	14.758 \| good	0.222 \| good
2025-10-23T03:00:00.000Z	49 \| good	9.107 \| good	40.625 \| good	27.396 \| good	1.59 \| good	17.164 \| good	0.243 \| good
2025-10-23T04:00:00.000Z	44 \| good	8.163 \| good	35.687 \| good	28.063 \| good	1.427 \| good	17.473 \| good	0.247 \| good
2025-10-23T05:00:00.000Z	33 \| good	6.3 \| good	28.086 \| good	29.537 \| good	1.263 \| good	17.781 \| good	0.252 \| good
2025-10-23T06:00:00.000Z	33 \| good	5.565 \| good	24.104 \| good	28.766 \| good	1.1 \| good	18.09 \| good	0.256 \| good
2025-10-23T07:00:00.000Z	27 \| good	4.684 \| good	20.239 \| good	26.989 \| good	0.927 \| good	16.59 \| good	0.239 \| good
2025-10-23T08:00:00.000Z	24 \| good	2.792 \| good	11.43 \| good	26.271 \| good	0.753 \| good	15.09 \| good	0.223 \| good
2025-10-23T09:00:00.000Z	24 \| good	1.326 \| good	5.276 \| good	25.919 \| good	0.58 \| good	13.59 \| good	0.206 \| good
2025-10-23T10:00:00.000Z	25 \| good	1.449 \| good	5.989 \| good	26.618 \| good	0.565 \| good	12.023 \| good	0.191 \| good
2025-10-23T11:00:00.000Z	19 \| good	1.262 \| good	4.905 \| good	21.102 \| good	0.551 \| good	10.456 \| good	0.175 \| good
2025-10-23T12:00:00.000Z	19 \| good	1.121 \| good	4.734 \| good	21.12 \| good	0.536 \| good	8.888 \| good	0.16 \| good
2025-10-23T13:00:00.000Z	16 \| good	2.611 \| good	10.766 \| good	17.104 \| good	0.558 \| good	8.363 \| good	0.177 \| good
2025-10-23T14:00:00.000Z	22 \| good	4.201 \| good	18.297 \| good	18.743 \| good	0.579 \| good	7.837 \| good	0.194 \| good
2025-10-23T15:00:00.000Z	33 \| good	6.119 \| good	26.985 \| good	23.44 \| good	0.601 \| good	7.311 \| good	0.211 \| good
2025-10-23T16:00:00.000Z	44 \| good	7.688 \| good	33.725 \| good	26.219 \| good	0.773 \| good	6.579 \| good	0.191 \| good
2025-10-23T17:00:00.000Z	49 \| good	9.415 \| good	41.881 \| good	31.411 \| good	0.946 \| good	5.847 \| good	0.172 \| good
2025-10-23T18:00:00.000Z	52 \| moderate	10.428 \| good	45.906 \| good	35.51 \| good	1.118 \| good	5.115 \| good	0.152 \| good
2025-10-23T19:00:00.000Z	38 \| good	6.94 \| good	30.66 \| good	39.863 \| good	1.204 \| good	5.657 \| good	0.153 \| good
2025-10-23T20:00:00.000Z	42 \| good	5.813 \| good	25.649 \| good	44.514 \| good	1.29 \| good	6.2 \| good	0.153 \| good
2025-10-23T21:00:00.000Z	42 \| good	4.665 \| good	20.174 \| good	45.435 \| good	1.376 \| good	6.742 \| good	0.154 \| good
2025-10-23T22:00:00.000Z	44 \| good	5.47 \| good	23.742 \| good	46.643 \| good	1.265 \| good	8.22 \| good	0.164 \| good
2025-10-23T23:00:00.000Z	41 \| good	5.916 \| good	25.94 \| good	44.424 \| good	1.155 \| good	9.697 \| good	0.174 \| good
2025-10-24T00:00:00.000Z	44 \| good	8.027 \| good	35.083 \| good	40.557 \| good	1.044 \| good	11.175 \| good	0.184 \| good
2025-10-24T01:00:00.000Z	37 \| good	6.163 \| good	27.085 \| good	40.12 \| good	0.994 \| good	12.223 \| good	0.199 \| good
2025-10-24T02:00:00.000Z	35 \| good	5.32 \| good	22.793 \| good	38.056 \| good	0.944 \| good	13.27 \| good	0.213 \| good
2025-10-24T03:00:00.000Z	37 \| good	3.615 \| good	15.813 \| good	40.4 \| good	0.894 \| good	14.318 \| good	0.227 \| good
2025-10-24T04:00:00.000Z	34 \| good	3.381 \| good	14.709 \| good	36.789 \| good	0.813 \| good	13.387 \| good	0.221 \| good
2025-10-24T05:00:00.000Z	33 \| good	3.58 \| good	15.552 \| good	35.999 \| good	0.732 \| good	12.456 \| good	0.215 \| good
2025-10-24T06:00:00.000Z	44 \| good	7.76 \| good	8.108 \| good	23.964 \| good	0.638 \| good	11.235 \| good	0.207 \| good
2025-10-24T07:00:00.000Z	29 \| good	3.473 \| good	15.254 \| good	30.705 \| good	0.585 \| good	9.767 \| good	0.192 \| good

Louisville

Get reliable air quality data to drive your business

Louisville, Colorado air quality map: Track AQI near you

0.31ppm

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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Check live rankings of places in the USA affected by air pollution.

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Frequently asked questions

How often is the air quality data for Louisville, Colorado updated?

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

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

The worst air quality in Louisville, Colorado in the last 24 hours was observed at 12:00:00 on 2025-10-22.

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

In the last 24 hrs, the best air quality in Louisville, Colorado was observed at 03:00:00 on 2025-10-22.

What is the current air quality in Louisville, Colorado?

The current air quality in Louisville, Colorado is 38, categorized as Good based on real-time data.

What pollutant is the most common in Louisville, Colorado?

The most common pollutant in Louisville, Colorado is O3.

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

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

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

The current PM_2.5 concentration at Louisville, Colorado is 4.305 μg/m³.

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

The current PM₁₀ concentration at Louisville, Colorado is 20.031 μg/m³.

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

The current carbon monoxide (CO) concentration at Louisville, Colorado is 0.319 ppm.

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

The current sulfur dioxide (SO₂) concentration at Louisville, Colorado is 0.375 ppb.

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

The current ozone (O₃) concentration at Louisville, Colorado is 41.15 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Louisville, Colorado is 19.414 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-10-20T08:00:00.000Z	46 \| good	3.135 \| good	19.36 \| good	49.505 \| good	0.889 \| good	13.822 \| good	0.234 \| good
2025-10-20T09:00:00.000Z	49 \| good	9.337 \| good	35.039 \| good	49.316 \| good	0.643 \| good	11.445 \| good	0.175 \| good
2025-10-20T10:00:00.000Z	46 \| good	2.462 \| good	16.887 \| good	50.189 \| good	0.581 \| good	12.258 \| good	0.159 \| good
2025-10-20T11:00:00.000Z	45 \| good	2.358 \| good	14.351 \| good	48.81 \| good	0.647 \| good	14.573 \| good	0.131 \| good
2025-10-20T12:00:00.000Z	42 \| good	2.409 \| good	13.294 \| good	45.497 \| good	0.575 \| good	13.324 \| good	0.131 \| good
2025-10-20T13:00:00.000Z	43 \| good	2.345 \| good	13.716 \| good	45.902 \| good	0.428 \| good	11.936 \| good	0.166 \| good
2025-10-20T14:00:00.000Z	43 \| good	2.225 \| good	13.674 \| good	46.487 \| good	0.397 \| good	12.014 \| good	0.224 \| good
2025-10-20T15:00:00.000Z	43 \| good	3.888 \| good	18.004 \| good	46.445 \| good	0.399 \| good	8.476 \| good	0.162 \| good
2025-10-20T16:00:00.000Z	43 \| good	2.947 \| good	15.724 \| good	46.197 \| good	0.484 \| good	5.859 \| good	0.162 \| good
2025-10-20T17:00:00.000Z	44 \| good	2.947 \| good	24.278 \| good	46.55 \| good	0.359 \| good	5.22 \| good	0.159 \| good
2025-10-20T18:00:00.000Z	44 \| good	2.537 \| good	16.311 \| good	47.264 \| good	0.321 \| good	6.517 \| good	0.159 \| good
2025-10-20T19:00:00.000Z	44 \| good	2.168 \| good	13.987 \| good	47.375 \| good	0.319 \| good	6.638 \| good	0.159 \| good
2025-10-20T20:00:00.000Z	44 \| good	2.202 \| good	17.833 \| good	46.741 \| good	0.319 \| good	7.968 \| good	0.159 \| good
2025-10-20T21:00:00.000Z	44 \| good	1.836 \| good	11.797 \| good	47.716 \| good	0.317 \| good	8.961 \| good	0.159 \| good
2025-10-20T22:00:00.000Z	44 \| good	1.817 \| good	12.7 \| good	47.079 \| good	0.349 \| good	7.935 \| good	0.189 \| good
2025-10-20T23:00:00.000Z	44 \| good	1.712 \| good	8.986 \| good	47.085 \| good	0.349 \| good	4.891 \| good	0.193 \| good
2025-10-21T00:00:00.000Z	43 \| good	1.831 \| good	10.875 \| good	46.227 \| good	0.312 \| good	5.097 \| good	0.193 \| good
2025-10-21T01:00:00.000Z	44 \| good	2.021 \| good	12.276 \| good	46.614 \| good	0.311 \| good	5.45 \| good	0.193 \| good
2025-10-21T02:00:00.000Z	42 \| good	2.427 \| good	13.101 \| good	44.847 \| good	0.499 \| good	5.337 \| good	0.178 \| good
2025-10-21T03:00:00.000Z	36 \| good	0.48 \| good	1.454 \| good	39.122 \| good	0.405 \| good	7.084 \| good	0.144 \| good
2025-10-21T04:00:00.000Z	38 \| good	2.279 \| good	12.28 \| good	40.584 \| good	0.317 \| good	8.165 \| good	0.222 \| good
2025-10-21T05:00:00.000Z	38 \| good	2.798 \| good	13.234 \| good	40.709 \| good	0.913 \| good	9.968 \| good	0.238 \| good
2025-10-21T06:00:00.000Z	38 \| good	2.565 \| good	14.036 \| good	40.547 \| good	0.527 \| good	11.06 \| good	0.238 \| good
2025-10-21T07:00:00.000Z	38 \| good	2.878 \| good	13.391 \| good	41.266 \| good	0.309 \| good	7.663 \| good	0.175 \| good
2025-10-21T08:00:00.000Z	36 \| good	2.933 \| good	13.476 \| good	38.93 \| good	0.798 \| good	9.615 \| good	0.208 \| good
2025-10-21T09:00:00.000Z	35 \| good	3.073 \| good	12.954 \| good	38.111 \| good	0.709 \| good	9.266 \| good	0.208 \| good
2025-10-21T10:00:00.000Z	33 \| good	3.544 \| good	13.009 \| good	35.952 \| good	0.56 \| good	14.707 \| good	0.193 \| good
2025-10-21T11:00:00.000Z	31 \| good	3.275 \| good	15.454 \| good	33.932 \| good	0.554 \| good	17.649 \| good	0.208 \| good
2025-10-21T12:00:00.000Z	33 \| good	3.673 \| good	16.57 \| good	36.364 \| good	0.628 \| good	21.299 \| good	0.237 \| good
2025-10-21T13:00:00.000Z	32 \| good	3.682 \| good	16.78 \| good	34.77 \| good	0.876 \| good	27.268 \| good	0.33 \| good
2025-10-21T14:00:00.000Z	36 \| good	4.003 \| good	20.662 \| good	38.649 \| good	0.875 \| good	31.757 \| good	0.515 \| good
2025-10-21T15:00:00.000Z	37 \| good	5.106 \| good	24.051 \| good	40.441 \| good	1.154 \| good	24.421 \| good	0.507 \| good
2025-10-21T16:00:00.000Z	33 \| good	5.115 \| good	24.193 \| good	36.359 \| good	0.936 \| good	23.045 \| good	0.337 \| good
2025-10-21T17:00:00.000Z	32 \| good	4.233 \| good	20.1 \| good	35.293 \| good	0.804 \| good	22.283 \| good	0.256 \| good
2025-10-21T18:00:00.000Z	34 \| good	3.283 \| good	16.499 \| good	37.479 \| good	0.699 \| good	20.379 \| good	0.193 \| good
2025-10-21T19:00:00.000Z	37 \| good	3.37 \| good	16.758 \| good	40.032 \| good	0.612 \| good	17.333 \| good	0.178 \| good
2025-10-21T20:00:00.000Z	39 \| good	3.404 \| good	17.442 \| good	41.95 \| good	1.049 \| good	16.289 \| good	0.211 \| good
2025-10-21T21:00:00.000Z	41 \| good	3.718 \| good	19.117 \| good	43.708 \| good	0.79 \| good	16.25 \| good	0.241 \| good
2025-10-21T22:00:00.000Z	44 \| good	3.804 \| good	26.079 \| good	46.72 \| good	0.719 \| good	12.932 \| good	0.208 \| good
2025-10-21T23:00:00.000Z	44 \| good	3.966 \| good	35.764 \| good	48.423 \| good	0.608 \| good	13.8 \| good	0.208 \| good
2025-10-22T00:00:00.000Z	44 \| good	3.224 \| good	22.85 \| good	48.106 \| good	0.735 \| good	18.189 \| good	0.238 \| good
2025-10-22T01:00:00.000Z	42 \| good	4.129 \| good	35.817 \| good	44.601 \| good	0.667 \| good	34.15 \| good	0.517 \| good
2025-10-22T02:00:00.000Z	43 \| good	3.976 \| good	28.361 \| good	45.541 \| good	0.784 \| good	27.24 \| good	0.512 \| good
2025-10-22T03:00:00.000Z	26 \| good	3.659 \| good	15.761 \| good	27.59 \| good	0.95 \| good	16.911 \| good	0.232 \| good
2025-10-22T04:00:00.000Z	38 \| good	4.384 \| good	21.094 \| good	41.465 \| good	0.441 \| good	24.052 \| good	0.313 \| good
2025-10-22T05:00:00.000Z	37 \| good	4.087 \| good	18.629 \| good	40.347 \| good	0.405 \| good	24.757 \| good	0.268 \| good
2025-10-22T06:00:00.000Z	38 \| good	4.305 \| good	20.031 \| good	41.15 \| good	0.375 \| good	19.414 \| good	0.319 \| good
2025-10-22T07:00:00.000Z	38 \| good	4.305 \| good	20.031 \| good	41.15 \| good	0.375 \| good	19.414 \| good	0.319 \| good
2025-10-22T08:00:00.000Z	30 \| good	1.044 \| good	3.974 \| good	32.331 \| good	0.476 \| good	13.757 \| good	0.226 \| good
2025-10-22T09:00:00.000Z	30 \| good	0.799 \| good	3.065 \| good	32.046 \| good	0.361 \| good	11.201 \| good	0.207 \| good
2025-10-22T10:00:00.000Z	30 \| good	0.663 \| good	2.229 \| good	31.788 \| good	0.337 \| good	9.733 \| good	0.188 \| good
2025-10-22T11:00:00.000Z	29 \| good	0.582 \| good	2.036 \| good	31.212 \| good	0.313 \| good	8.265 \| good	0.169 \| good
2025-10-22T12:00:00.000Z	27 \| good	0.72 \| good	2.6 \| good	29.032 \| good	0.289 \| good	6.796 \| good	0.15 \| good
2025-10-22T13:00:00.000Z	24 \| good	1.061 \| good	4.429 \| good	26.245 \| good	0.326 \| good	6.932 \| good	0.168 \| good
2025-10-22T14:00:00.000Z	24 \| good	3.312 \| good	14.348 \| good	26.171 \| good	0.363 \| good	7.068 \| good	0.187 \| good
2025-10-22T15:00:00.000Z	28 \| good	5.284 \| good	22.698 \| good	30.33 \| good	0.4 \| good	7.204 \| good	0.205 \| good
2025-10-22T16:00:00.000Z	33 \| good	6.454 \| good	28.358 \| good	31.742 \| good	0.521 \| good	5.945 \| good	0.181 \| good
2025-10-22T17:00:00.000Z	38 \| good	7.172 \| good	31.418 \| good	34.853 \| good	0.641 \| good	4.686 \| good	0.156 \| good
2025-10-22T18:00:00.000Z	44 \| good	8.179 \| good	36.003 \| good	38.174 \| good	0.761 \| good	3.428 \| good	0.132 \| good
2025-10-22T19:00:00.000Z	44 \| good	7.636 \| good	33.589 \| good	40.11 \| good	0.882 \| good	3.545 \| good	0.132 \| good
2025-10-22T20:00:00.000Z	39 \| good	5.906 \| good	26.233 \| good	42.074 \| good	1.003 \| good	3.662 \| good	0.132 \| good
2025-10-22T21:00:00.000Z	40 \| good	5.395 \| good	23.8 \| good	43.386 \| good	1.124 \| good	3.779 \| good	0.132 \| good
2025-10-22T22:00:00.000Z	42 \| good	5.316 \| good	23.212 \| good	45.319 \| good	1.119 \| good	5.835 \| good	0.148 \| good
2025-10-22T23:00:00.000Z	52 \| moderate	10.058 \| good	44.757 \| good	44.154 \| good	1.114 \| good	7.891 \| good	0.163 \| good
2025-10-23T00:00:00.000Z	52 \| moderate	10.35 \| good	45.852 \| good	37.28 \| good	1.109 \| good	9.948 \| good	0.179 \| good
2025-10-23T01:00:00.000Z	56 \| moderate	11.598 \| good	51.53 \| good	31.669 \| good	1.27 \| good	12.353 \| good	0.2 \| good
2025-10-23T02:00:00.000Z	54 \| moderate	10.8 \| good	47.967 \| good	29.447 \| good	1.43 \| good	14.758 \| good	0.222 \| good
2025-10-23T03:00:00.000Z	49 \| good	9.107 \| good	40.625 \| good	27.396 \| good	1.59 \| good	17.164 \| good	0.243 \| good
2025-10-23T04:00:00.000Z	44 \| good	8.163 \| good	35.687 \| good	28.063 \| good	1.427 \| good	17.473 \| good	0.247 \| good
2025-10-23T05:00:00.000Z	33 \| good	6.3 \| good	28.086 \| good	29.537 \| good	1.263 \| good	17.781 \| good	0.252 \| good
2025-10-23T06:00:00.000Z	33 \| good	5.565 \| good	24.104 \| good	28.766 \| good	1.1 \| good	18.09 \| good	0.256 \| good
2025-10-23T07:00:00.000Z	27 \| good	4.684 \| good	20.239 \| good	26.989 \| good	0.927 \| good	16.59 \| good	0.239 \| good
2025-10-23T08:00:00.000Z	24 \| good	2.792 \| good	11.43 \| good	26.271 \| good	0.753 \| good	15.09 \| good	0.223 \| good
2025-10-23T09:00:00.000Z	24 \| good	1.326 \| good	5.276 \| good	25.919 \| good	0.58 \| good	13.59 \| good	0.206 \| good
2025-10-23T10:00:00.000Z	25 \| good	1.449 \| good	5.989 \| good	26.618 \| good	0.565 \| good	12.023 \| good	0.191 \| good
2025-10-23T11:00:00.000Z	19 \| good	1.262 \| good	4.905 \| good	21.102 \| good	0.551 \| good	10.456 \| good	0.175 \| good
2025-10-23T12:00:00.000Z	19 \| good	1.121 \| good	4.734 \| good	21.12 \| good	0.536 \| good	8.888 \| good	0.16 \| good
2025-10-23T13:00:00.000Z	16 \| good	2.611 \| good	10.766 \| good	17.104 \| good	0.558 \| good	8.363 \| good	0.177 \| good
2025-10-23T14:00:00.000Z	22 \| good	4.201 \| good	18.297 \| good	18.743 \| good	0.579 \| good	7.837 \| good	0.194 \| good
2025-10-23T15:00:00.000Z	33 \| good	6.119 \| good	26.985 \| good	23.44 \| good	0.601 \| good	7.311 \| good	0.211 \| good
2025-10-23T16:00:00.000Z	44 \| good	7.688 \| good	33.725 \| good	26.219 \| good	0.773 \| good	6.579 \| good	0.191 \| good
2025-10-23T17:00:00.000Z	49 \| good	9.415 \| good	41.881 \| good	31.411 \| good	0.946 \| good	5.847 \| good	0.172 \| good
2025-10-23T18:00:00.000Z	52 \| moderate	10.428 \| good	45.906 \| good	35.51 \| good	1.118 \| good	5.115 \| good	0.152 \| good
2025-10-23T19:00:00.000Z	38 \| good	6.94 \| good	30.66 \| good	39.863 \| good	1.204 \| good	5.657 \| good	0.153 \| good
2025-10-23T20:00:00.000Z	42 \| good	5.813 \| good	25.649 \| good	44.514 \| good	1.29 \| good	6.2 \| good	0.153 \| good
2025-10-23T21:00:00.000Z	42 \| good	4.665 \| good	20.174 \| good	45.435 \| good	1.376 \| good	6.742 \| good	0.154 \| good
2025-10-23T22:00:00.000Z	44 \| good	5.47 \| good	23.742 \| good	46.643 \| good	1.265 \| good	8.22 \| good	0.164 \| good
2025-10-23T23:00:00.000Z	41 \| good	5.916 \| good	25.94 \| good	44.424 \| good	1.155 \| good	9.697 \| good	0.174 \| good
2025-10-24T00:00:00.000Z	44 \| good	8.027 \| good	35.083 \| good	40.557 \| good	1.044 \| good	11.175 \| good	0.184 \| good
2025-10-24T01:00:00.000Z	37 \| good	6.163 \| good	27.085 \| good	40.12 \| good	0.994 \| good	12.223 \| good	0.199 \| good
2025-10-24T02:00:00.000Z	35 \| good	5.32 \| good	22.793 \| good	38.056 \| good	0.944 \| good	13.27 \| good	0.213 \| good
2025-10-24T03:00:00.000Z	37 \| good	3.615 \| good	15.813 \| good	40.4 \| good	0.894 \| good	14.318 \| good	0.227 \| good
2025-10-24T04:00:00.000Z	34 \| good	3.381 \| good	14.709 \| good	36.789 \| good	0.813 \| good	13.387 \| good	0.221 \| good
2025-10-24T05:00:00.000Z	33 \| good	3.58 \| good	15.552 \| good	35.999 \| good	0.732 \| good	12.456 \| good	0.215 \| good
2025-10-24T06:00:00.000Z	44 \| good	7.76 \| good	8.108 \| good	23.964 \| good	0.638 \| good	11.235 \| good	0.207 \| good
2025-10-24T07:00:00.000Z	29 \| good	3.473 \| good	15.254 \| good	30.705 \| good	0.585 \| good	9.767 \| good	0.192 \| good

Louisville, Colorado live air quality index now

Major air pollutants in Louisville, Colorado

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Louisville, Colorado air quality forecast and history

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Louisville, Colorado air quality map: Track AQI near you

Air quality in nearby cities

Lafayette, Colorado

Superior, Colorado

Broomfield, Colorado

Gunbarrel, Colorado

Erie, Colorado

Boulder, Colorado

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Air quality levels in US

Frequently asked questions

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

What is the current air quality in Louisville, Colorado?

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

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

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

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

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

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

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

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

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

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