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

The current PM10 concentration at Louisville, Colorado is 13.168 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Louisville, Colorado is 0.47 ppb.

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

The current ozone (O3) concentration at Louisville, Colorado is 47.69 ppm.

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

The current nitrogen dioxide (NO2) concentration at Louisville, Colorado is 3.774 ppb.

Louisville, Colorado live air quality index now

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

The current PM2.5 concentration at Louisville, Colorado is 1.417 μg/m3.

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)

1.42 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

13.17 μg/m³

155

255

425

605+

Ozone (O₃)

47.69 ppb

201

201+

Sulfur Dioxide (SO₂)

0.47 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.77 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.19 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

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
2026-04-22T05:00:00.000Z	58 \| moderate	5.464 \| good	25.447 \| good	57.079 \| fine	0.627 \| good	13.704 \| good	0.245 \| good
2026-04-22T06:00:00.000Z	58 \| moderate	5.382 \| good	24.789 \| good	57.238 \| fine	0.627 \| good	13.405 \| good	0.245 \| good
2026-04-22T07:00:00.000Z	49 \| good	4.941 \| good	21.065 \| good	53.424 \| good	0.623 \| good	11.973 \| good	0.243 \| good
2026-04-22T08:00:00.000Z	47 \| good	5.266 \| good	25.553 \| good	51.281 \| good	0.638 \| good	11.73 \| good	0.178 \| good
2026-04-22T09:00:00.000Z	46 \| good	5.246 \| good	26.875 \| good	50.037 \| good	0.676 \| good	11.376 \| good	0.145 \| good
2026-04-22T10:00:00.000Z	43 \| good	4.957 \| good	21.316 \| good	46.27 \| good	0.614 \| good	11.842 \| good	0.16 \| good
2026-04-22T11:00:00.000Z	44 \| good	4.53 \| good	19.928 \| good	47.057 \| good	0.822 \| good	19.231 \| good	0.188 \| good
2026-04-22T12:00:00.000Z	44 \| good	3.962 \| good	16.09 \| good	47.184 \| good	0.895 \| good	26.625 \| good	0.293 \| good
2026-04-22T13:00:00.000Z	44 \| good	4.303 \| good	20.768 \| good	46.792 \| good	0.889 \| good	30.054 \| good	0.326 \| good
2026-04-22T14:00:00.000Z	43 \| good	5.009 \| good	31.049 \| good	46.174 \| good	0.828 \| good	23.506 \| good	0.252 \| good
2026-04-22T15:00:00.000Z	52 \| moderate	5.735 \| good	57.907 \| fine	46.336 \| good	0.96 \| good	17.594 \| good	0.296 \| good
2026-04-22T16:00:00.000Z	53 \| moderate	5.59 \| good	58.786 \| fine	49.592 \| good	0.626 \| good	16.032 \| good	0.281 \| good
2026-04-22T17:00:00.000Z	48 \| good	4.944 \| good	42.667 \| good	52.268 \| good	0.531 \| good	12.412 \| good	0.237 \| good
2026-04-22T18:00:00.000Z	54 \| moderate	4.367 \| good	34.569 \| good	55.644 \| fine	0.408 \| good	9.285 \| good	0.221 \| good
2026-04-22T19:00:00.000Z	64 \| moderate	4.027 \| good	31.779 \| good	58.888 \| fine	0.459 \| good	6.342 \| good	0.161 \| good
2026-04-22T20:00:00.000Z	64 \| moderate	3.168 \| good	41.646 \| good	58.664 \| fine	0.38 \| good	6.797 \| good	0.206 \| good
2026-04-22T21:00:00.000Z	71 \| moderate	2.897 \| good	23.234 \| good	60.749 \| fine	0.343 \| good	8.801 \| good	0.217 \| good
2026-04-22T22:00:00.000Z	71 \| moderate	3.345 \| good	48.217 \| good	61.202 \| fine	0.405 \| good	7.907 \| good	0.217 \| good
2026-04-22T23:00:00.000Z	67 \| moderate	3.637 \| good	51.973 \| good	60.467 \| fine	0.283 \| good	6.644 \| good	0.173 \| good
2026-04-23T00:00:00.000Z	67 \| moderate	3.827 \| good	47.918 \| good	59.56 \| fine	0.355 \| good	5.589 \| good	0.173 \| good
2026-04-23T01:00:00.000Z	61 \| moderate	3.986 \| good	42.309 \| good	58.404 \| fine	0.217 \| good	6.024 \| good	0.157 \| good
2026-04-23T02:00:00.000Z	54 \| moderate	3.727 \| good	42.156 \| good	56.266 \| fine	0.319 \| good	6.288 \| good	0.157 \| good
2026-04-23T03:00:00.000Z	51 \| moderate	3.48 \| good	25.957 \| good	55.145 \| fine	0.454 \| good	7.227 \| good	0.173 \| good
2026-04-23T04:00:00.000Z	50 \| good	2.943 \| good	17.611 \| good	53.86 \| good	0.238 \| good	5.901 \| good	0.206 \| good
2026-04-23T05:00:00.000Z	50 \| good	3.356 \| good	18.196 \| good	53.916 \| good	0.302 \| good	4.913 \| good	0.189 \| good
2026-04-23T06:00:00.000Z	49 \| good	4.652 \| good	24.189 \| good	53.315 \| good	0.277 \| good	3.239 \| good	0.157 \| good
2026-04-23T07:00:00.000Z	50 \| good	5.373 \| good	35.102 \| good	54.23 \| good	0.496 \| good	1.65 \| good	0.128 \| good
2026-04-23T08:00:00.000Z	49 \| good	6 \| good	45.546 \| good	53.343 \| good	0.491 \| good	1.109 \| good	0.1 \| good
2026-04-23T09:00:00.000Z	49 \| good	5.381 \| good	40.667 \| good	52.738 \| good	0.285 \| good	1.168 \| good	0.1 \| good
2026-04-23T10:00:00.000Z	49 \| good	5.146 \| good	44.665 \| good	53.152 \| good	0.374 \| good	1.574 \| good	0.1 \| good
2026-04-23T11:00:00.000Z	48 \| good	4.643 \| good	35.212 \| good	51.929 \| good	0.441 \| good	3.078 \| good	0.19 \| good
2026-04-23T12:00:00.000Z	50 \| good	4.167 \| good	30.117 \| good	53.639 \| good	0.509 \| good	5.378 \| good	0.21 \| good
2026-04-23T13:00:00.000Z	49 \| good	3.771 \| good	30.696 \| good	53.416 \| good	0.45 \| good	7.32 \| good	0.266 \| good
2026-04-23T14:00:00.000Z	49 \| good	4.035 \| good	36.283 \| good	53.04 \| good	0.488 \| good	6.265 \| good	0.218 \| good
2026-04-23T15:00:00.000Z	58 \| moderate	4.329 \| good	50.941 \| good	57.191 \| fine	0.586 \| good	8.895 \| good	0.214 \| good
2026-04-23T16:00:00.000Z	58 \| moderate	4.234 \| good	58.118 \| fine	56.95 \| fine	0.458 \| good	6.655 \| good	0.157 \| good
2026-04-23T17:00:00.000Z	64 \| moderate	3.51 \| good	43.881 \| good	59.365 \| fine	0.283 \| good	6.893 \| good	0.157 \| good
2026-04-23T18:00:00.000Z	51 \| moderate	2.173 \| good	24.475 \| good	55.373 \| fine	0.458 \| good	6.125 \| good	0.157 \| good
2026-04-23T19:00:00.000Z	49 \| good	1.797 \| good	17.774 \| good	53.266 \| good	0.308 \| good	7.296 \| good	0.201 \| good
2026-04-23T20:00:00.000Z	50 \| good	1.669 \| good	19.129 \| good	53.812 \| good	0.235 \| good	6.821 \| good	0.157 \| good
2026-04-23T21:00:00.000Z	50 \| good	1.426 \| good	12.923 \| good	53.898 \| good	0.418 \| good	8.39 \| good	0.185 \| good
2026-04-23T22:00:00.000Z	49 \| good	1.324 \| good	11.384 \| good	52.95 \| good	0.237 \| good	6.45 \| good	0.218 \| good
2026-04-23T23:00:00.000Z	48 \| good	1.653 \| good	14.86 \| good	51.91 \| good	0.441 \| good	5.934 \| good	0.201 \| good
2026-04-24T00:00:00.000Z	46 \| good	1.604 \| good	19.712 \| good	49.877 \| good	0.393 \| good	5.697 \| good	0.185 \| good
2026-04-24T01:00:00.000Z	45 \| good	1.306 \| good	11.698 \| good	49.174 \| good	0.274 \| good	2.997 \| good	0.185 \| good
2026-04-24T02:00:00.000Z	44 \| good	1.228 \| good	10.154 \| good	46.739 \| good	0.622 \| good	2.652 \| good	0.185 \| good
2026-04-24T03:00:00.000Z	47 \| good	2.861 \| good	11.643 \| good	51.17 \| good	0.22 \| good	3.626 \| good	0.143 \| good
2026-04-24T04:00:00.000Z	44 \| good	1.329 \| good	12.247 \| good	46.72 \| good	0.473 \| good	3.473 \| good	0.189 \| good
2026-04-24T04:00:00.000Z	44 \| good	1.417 \| good	13.168 \| good	47.69 \| good	0.47 \| good	3.774 \| good	0.19 \| good
2026-04-24T05:00:00.000Z	46 \| good	5.713 \| good	25.157 \| good	49.963 \| good	0.367 \| good	8.438 \| good	0.176 \| good
2026-04-24T06:00:00.000Z	58 \| moderate	13.485 \| fine	59.962 \| fine	49.117 \| good	0.406 \| good	9.599 \| good	0.183 \| good
2026-04-24T07:00:00.000Z	71 \| moderate	19.532 \| fine	85.86 \| fine	46.286 \| good	0.37 \| good	8.391 \| good	0.174 \| good
2026-04-24T08:00:00.000Z	69 \| moderate	19.497 \| fine	85.924 \| fine	44.456 \| good	0.333 \| good	7.184 \| good	0.164 \| good
2026-04-24T09:00:00.000Z	64 \| moderate	16.29 \| fine	71.672 \| fine	43.446 \| good	0.296 \| good	5.976 \| good	0.155 \| good
2026-04-24T10:00:00.000Z	58 \| moderate	12.692 \| fine	57.117 \| fine	39.579 \| good	0.273 \| good	5.448 \| good	0.151 \| good
2026-04-24T11:00:00.000Z	54 \| moderate	11.011 \| good	49.144 \| good	30.409 \| good	0.25 \| good	4.92 \| good	0.148 \| good
2026-04-24T12:00:00.000Z	56 \| moderate	12.087 \| good	54.203 \| good	29.693 \| good	0.227 \| good	4.392 \| good	0.144 \| good
2026-04-24T13:00:00.000Z	52 \| moderate	10.211 \| good	45.336 \| good	34.268 \| good	0.256 \| good	3.865 \| good	0.145 \| good
2026-04-24T14:00:00.000Z	49 \| good	8.849 \| good	39.589 \| good	39.598 \| good	0.285 \| good	3.338 \| good	0.146 \| good
2026-04-24T15:00:00.000Z	49 \| good	8.793 \| good	38.613 \| good	45.749 \| good	0.314 \| good	2.811 \| good	0.147 \| good
2026-04-24T16:00:00.000Z	45 \| good	7.786 \| good	34.187 \| good	49.433 \| good	0.292 \| good	2.225 \| good	0.137 \| good
2026-04-24T17:00:00.000Z	47 \| good	6.883 \| good	30.557 \| good	50.524 \| good	0.271 \| good	1.64 \| good	0.127 \| good
2026-04-24T18:00:00.000Z	49 \| good	5.057 \| good	22.201 \| good	53.284 \| good	0.249 \| good	1.054 \| good	0.117 \| good
2026-04-24T19:00:00.000Z	58 \| moderate	4.929 \| good	21.474 \| good	56.827 \| fine	0.212 \| good	0.851 \| good	0.114 \| good
2026-04-24T20:00:00.000Z	64 \| moderate	9.581 \| good	42.426 \| good	58.675 \| fine	0.175 \| good	0.648 \| good	0.112 \| good
2026-04-24T21:00:00.000Z	67 \| moderate	10.195 \| good	45.318 \| good	60.466 \| fine	0.139 \| good	0.445 \| good	0.109 \| good
2026-04-24T22:00:00.000Z	64 \| moderate	12.32 \| fine	54.556 \| good	59.366 \| fine	0.139 \| good	0.505 \| good	0.109 \| good
2026-04-24T23:00:00.000Z	61 \| moderate	5.917 \| good	26.487 \| good	58.35 \| fine	0.139 \| good	0.565 \| good	0.11 \| good
2026-04-25T00:00:00.000Z	79 \| moderate	24.176 \| fine	105.518 \| fine	55.704 \| fine	0.139 \| good	0.626 \| good	0.11 \| good
2026-04-25T01:00:00.000Z	115 \| sensitive	40.513 \| moderate	179.42 \| moderate	56.542 \| fine	0.22 \| good	2.843 \| good	0.127 \| good
2026-04-25T02:00:00.000Z	129 \| sensitive	47.064 \| moderate	212.095 \| moderate	52.324 \| good	0.3 \| good	5.059 \| good	0.144 \| good
2026-04-25T03:00:00.000Z	139 \| sensitive	50.601 \| moderate	229.445 \| moderate	50.93 \| good	0.381 \| good	7.276 \| good	0.161 \| good
2026-04-25T04:00:00.000Z	124 \| sensitive	44.888 \| moderate	200.807 \| moderate	49.046 \| good	0.357 \| good	6.718 \| good	0.16 \| good
2026-04-25T05:00:00.000Z	69 \| moderate	18.593 \| fine	82.187 \| fine	46.774 \| good	0.333 \| good	6.159 \| good	0.159 \| good
2026-04-25T06:00:00.000Z	39 \| good	3.794 \| good	16.409 \| good	42.383 \| good	0.309 \| good	5.6 \| good	0.158 \| good
2026-04-25T07:00:00.000Z	34 \| good	4.296 \| good	18.841 \| good	36.938 \| good	0.332 \| good	4.879 \| good	0.154 \| good
2026-04-25T08:00:00.000Z	32 \| good	3.583 \| good	15.72 \| good	34.663 \| good	0.355 \| good	4.158 \| good	0.15 \| good
2026-04-25T09:00:00.000Z	32 \| good	3.899 \| good	17.103 \| good	35.052 \| good	0.378 \| good	3.437 \| good	0.145 \| good
2026-04-25T10:00:00.000Z	31 \| good	3.416 \| good	14.99 \| good	33.868 \| good	0.38 \| good	3.827 \| good	0.147 \| good
2026-04-25T11:00:00.000Z	33 \| good	3.286 \| good	14.538 \| good	35.935 \| good	0.382 \| good	4.217 \| good	0.149 \| good
2026-04-25T12:00:00.000Z	31 \| good	3.953 \| good	17.426 \| good	33.854 \| good	0.384 \| good	4.607 \| good	0.15 \| good
2026-04-25T13:00:00.000Z	36 \| good	2.808 \| good	11.678 \| good	39.408 \| good	0.463 \| good	3.955 \| good	0.148 \| good
2026-04-25T14:00:00.000Z	38 \| good	3.147 \| good	13.68 \| good	41.32 \| good	0.543 \| good	3.304 \| good	0.146 \| good
2026-04-25T15:00:00.000Z	36 \| good	3.591 \| good	15.966 \| good	39.388 \| good	0.623 \| good	2.652 \| good	0.145 \| good
2026-04-25T16:00:00.000Z	36 \| good	4.02 \| good	17.565 \| good	39.311 \| good	0.628 \| good	2.459 \| good	0.144 \| good
2026-04-25T17:00:00.000Z	40 \| good	4.576 \| good	20.007 \| good	42.961 \| good	0.633 \| good	2.265 \| good	0.143 \| good
2026-04-25T18:00:00.000Z	41 \| good	4.396 \| good	19.445 \| good	44.294 \| good	0.638 \| good	2.072 \| good	0.142 \| good
2026-04-25T19:00:00.000Z	44 \| good	3.908 \| good	17.241 \| good	47.672 \| good	0.602 \| good	1.954 \| good	0.14 \| good
2026-04-25T20:00:00.000Z	48 \| good	3.432 \| good	15.049 \| good	51.598 \| good	0.567 \| good	1.837 \| good	0.138 \| good
2026-04-25T21:00:00.000Z	50 \| good	4.654 \| good	20.097 \| good	53.531 \| good	0.532 \| good	1.719 \| good	0.135 \| good
2026-04-25T22:00:00.000Z	51 \| moderate	1.461 \| good	5.759 \| good	55.437 \| fine	0.509 \| good	1.959 \| good	0.136 \| good
2026-04-25T23:00:00.000Z	54 \| moderate	0.789 \| good	3.058 \| good	55.62 \| fine	0.486 \| good	2.2 \| good	0.137 \| good
2026-04-26T00:00:00.000Z	54 \| moderate	5.193 \| good	7.848 \| good	55.769 \| fine	0.478 \| good	2.495 \| good	0.139 \| good
2026-04-26T01:00:00.000Z	48 \| good	5.567 \| good	23.691 \| good	52.34 \| good	0.519 \| good	3.894 \| good	0.149 \| good
2026-04-26T02:00:00.000Z	38 \| good	3.894 \| good	17.028 \| good	41.165 \| good	0.574 \| good	5.349 \| good	0.16 \| good
2026-04-26T03:00:00.000Z	36 \| good	2.719 \| good	11.193 \| good	39.295 \| good	0.629 \| good	6.803 \| good	0.17 \| good
2026-04-26T04:00:00.000Z	36 \| good	2.341 \| good	9.574 \| good	38.603 \| good	0.635 \| good	7.261 \| good	0.174 \| good

Louisville

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Louisville, Colorado air quality map: Track AQI near you

0.14ppm

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 05:00:00 on 2026-04-23.

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 02:00:00 on 2026-04-24.

What is the current air quality in Louisville, Colorado?

The current air quality in Louisville, Colorado is 44, 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 1.417 μg/m³.

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

The current PM₁₀ concentration at Louisville, Colorado is 13.168 μg/m³.

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

The current carbon monoxide (CO) concentration at Louisville, Colorado is 0.19 ppm.

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

The current sulfur dioxide (SO₂) concentration at Louisville, Colorado is 0.47 ppb.

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

The current ozone (O₃) concentration at Louisville, Colorado is 47.69 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Louisville, Colorado is 3.774 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-22T05:00:00.000Z	58 \| moderate	5.464 \| good	25.447 \| good	57.079 \| fine	0.627 \| good	13.704 \| good	0.245 \| good
2026-04-22T06:00:00.000Z	58 \| moderate	5.382 \| good	24.789 \| good	57.238 \| fine	0.627 \| good	13.405 \| good	0.245 \| good
2026-04-22T07:00:00.000Z	49 \| good	4.941 \| good	21.065 \| good	53.424 \| good	0.623 \| good	11.973 \| good	0.243 \| good
2026-04-22T08:00:00.000Z	47 \| good	5.266 \| good	25.553 \| good	51.281 \| good	0.638 \| good	11.73 \| good	0.178 \| good
2026-04-22T09:00:00.000Z	46 \| good	5.246 \| good	26.875 \| good	50.037 \| good	0.676 \| good	11.376 \| good	0.145 \| good
2026-04-22T10:00:00.000Z	43 \| good	4.957 \| good	21.316 \| good	46.27 \| good	0.614 \| good	11.842 \| good	0.16 \| good
2026-04-22T11:00:00.000Z	44 \| good	4.53 \| good	19.928 \| good	47.057 \| good	0.822 \| good	19.231 \| good	0.188 \| good
2026-04-22T12:00:00.000Z	44 \| good	3.962 \| good	16.09 \| good	47.184 \| good	0.895 \| good	26.625 \| good	0.293 \| good
2026-04-22T13:00:00.000Z	44 \| good	4.303 \| good	20.768 \| good	46.792 \| good	0.889 \| good	30.054 \| good	0.326 \| good
2026-04-22T14:00:00.000Z	43 \| good	5.009 \| good	31.049 \| good	46.174 \| good	0.828 \| good	23.506 \| good	0.252 \| good
2026-04-22T15:00:00.000Z	52 \| moderate	5.735 \| good	57.907 \| fine	46.336 \| good	0.96 \| good	17.594 \| good	0.296 \| good
2026-04-22T16:00:00.000Z	53 \| moderate	5.59 \| good	58.786 \| fine	49.592 \| good	0.626 \| good	16.032 \| good	0.281 \| good
2026-04-22T17:00:00.000Z	48 \| good	4.944 \| good	42.667 \| good	52.268 \| good	0.531 \| good	12.412 \| good	0.237 \| good
2026-04-22T18:00:00.000Z	54 \| moderate	4.367 \| good	34.569 \| good	55.644 \| fine	0.408 \| good	9.285 \| good	0.221 \| good
2026-04-22T19:00:00.000Z	64 \| moderate	4.027 \| good	31.779 \| good	58.888 \| fine	0.459 \| good	6.342 \| good	0.161 \| good
2026-04-22T20:00:00.000Z	64 \| moderate	3.168 \| good	41.646 \| good	58.664 \| fine	0.38 \| good	6.797 \| good	0.206 \| good
2026-04-22T21:00:00.000Z	71 \| moderate	2.897 \| good	23.234 \| good	60.749 \| fine	0.343 \| good	8.801 \| good	0.217 \| good
2026-04-22T22:00:00.000Z	71 \| moderate	3.345 \| good	48.217 \| good	61.202 \| fine	0.405 \| good	7.907 \| good	0.217 \| good
2026-04-22T23:00:00.000Z	67 \| moderate	3.637 \| good	51.973 \| good	60.467 \| fine	0.283 \| good	6.644 \| good	0.173 \| good
2026-04-23T00:00:00.000Z	67 \| moderate	3.827 \| good	47.918 \| good	59.56 \| fine	0.355 \| good	5.589 \| good	0.173 \| good
2026-04-23T01:00:00.000Z	61 \| moderate	3.986 \| good	42.309 \| good	58.404 \| fine	0.217 \| good	6.024 \| good	0.157 \| good
2026-04-23T02:00:00.000Z	54 \| moderate	3.727 \| good	42.156 \| good	56.266 \| fine	0.319 \| good	6.288 \| good	0.157 \| good
2026-04-23T03:00:00.000Z	51 \| moderate	3.48 \| good	25.957 \| good	55.145 \| fine	0.454 \| good	7.227 \| good	0.173 \| good
2026-04-23T04:00:00.000Z	50 \| good	2.943 \| good	17.611 \| good	53.86 \| good	0.238 \| good	5.901 \| good	0.206 \| good
2026-04-23T05:00:00.000Z	50 \| good	3.356 \| good	18.196 \| good	53.916 \| good	0.302 \| good	4.913 \| good	0.189 \| good
2026-04-23T06:00:00.000Z	49 \| good	4.652 \| good	24.189 \| good	53.315 \| good	0.277 \| good	3.239 \| good	0.157 \| good
2026-04-23T07:00:00.000Z	50 \| good	5.373 \| good	35.102 \| good	54.23 \| good	0.496 \| good	1.65 \| good	0.128 \| good
2026-04-23T08:00:00.000Z	49 \| good	6 \| good	45.546 \| good	53.343 \| good	0.491 \| good	1.109 \| good	0.1 \| good
2026-04-23T09:00:00.000Z	49 \| good	5.381 \| good	40.667 \| good	52.738 \| good	0.285 \| good	1.168 \| good	0.1 \| good
2026-04-23T10:00:00.000Z	49 \| good	5.146 \| good	44.665 \| good	53.152 \| good	0.374 \| good	1.574 \| good	0.1 \| good
2026-04-23T11:00:00.000Z	48 \| good	4.643 \| good	35.212 \| good	51.929 \| good	0.441 \| good	3.078 \| good	0.19 \| good
2026-04-23T12:00:00.000Z	50 \| good	4.167 \| good	30.117 \| good	53.639 \| good	0.509 \| good	5.378 \| good	0.21 \| good
2026-04-23T13:00:00.000Z	49 \| good	3.771 \| good	30.696 \| good	53.416 \| good	0.45 \| good	7.32 \| good	0.266 \| good
2026-04-23T14:00:00.000Z	49 \| good	4.035 \| good	36.283 \| good	53.04 \| good	0.488 \| good	6.265 \| good	0.218 \| good
2026-04-23T15:00:00.000Z	58 \| moderate	4.329 \| good	50.941 \| good	57.191 \| fine	0.586 \| good	8.895 \| good	0.214 \| good
2026-04-23T16:00:00.000Z	58 \| moderate	4.234 \| good	58.118 \| fine	56.95 \| fine	0.458 \| good	6.655 \| good	0.157 \| good
2026-04-23T17:00:00.000Z	64 \| moderate	3.51 \| good	43.881 \| good	59.365 \| fine	0.283 \| good	6.893 \| good	0.157 \| good
2026-04-23T18:00:00.000Z	51 \| moderate	2.173 \| good	24.475 \| good	55.373 \| fine	0.458 \| good	6.125 \| good	0.157 \| good
2026-04-23T19:00:00.000Z	49 \| good	1.797 \| good	17.774 \| good	53.266 \| good	0.308 \| good	7.296 \| good	0.201 \| good
2026-04-23T20:00:00.000Z	50 \| good	1.669 \| good	19.129 \| good	53.812 \| good	0.235 \| good	6.821 \| good	0.157 \| good
2026-04-23T21:00:00.000Z	50 \| good	1.426 \| good	12.923 \| good	53.898 \| good	0.418 \| good	8.39 \| good	0.185 \| good
2026-04-23T22:00:00.000Z	49 \| good	1.324 \| good	11.384 \| good	52.95 \| good	0.237 \| good	6.45 \| good	0.218 \| good
2026-04-23T23:00:00.000Z	48 \| good	1.653 \| good	14.86 \| good	51.91 \| good	0.441 \| good	5.934 \| good	0.201 \| good
2026-04-24T00:00:00.000Z	46 \| good	1.604 \| good	19.712 \| good	49.877 \| good	0.393 \| good	5.697 \| good	0.185 \| good
2026-04-24T01:00:00.000Z	45 \| good	1.306 \| good	11.698 \| good	49.174 \| good	0.274 \| good	2.997 \| good	0.185 \| good
2026-04-24T02:00:00.000Z	44 \| good	1.228 \| good	10.154 \| good	46.739 \| good	0.622 \| good	2.652 \| good	0.185 \| good
2026-04-24T03:00:00.000Z	47 \| good	2.861 \| good	11.643 \| good	51.17 \| good	0.22 \| good	3.626 \| good	0.143 \| good
2026-04-24T04:00:00.000Z	44 \| good	1.329 \| good	12.247 \| good	46.72 \| good	0.473 \| good	3.473 \| good	0.189 \| good
2026-04-24T04:00:00.000Z	44 \| good	1.417 \| good	13.168 \| good	47.69 \| good	0.47 \| good	3.774 \| good	0.19 \| good
2026-04-24T05:00:00.000Z	46 \| good	5.713 \| good	25.157 \| good	49.963 \| good	0.367 \| good	8.438 \| good	0.176 \| good
2026-04-24T06:00:00.000Z	58 \| moderate	13.485 \| fine	59.962 \| fine	49.117 \| good	0.406 \| good	9.599 \| good	0.183 \| good
2026-04-24T07:00:00.000Z	71 \| moderate	19.532 \| fine	85.86 \| fine	46.286 \| good	0.37 \| good	8.391 \| good	0.174 \| good
2026-04-24T08:00:00.000Z	69 \| moderate	19.497 \| fine	85.924 \| fine	44.456 \| good	0.333 \| good	7.184 \| good	0.164 \| good
2026-04-24T09:00:00.000Z	64 \| moderate	16.29 \| fine	71.672 \| fine	43.446 \| good	0.296 \| good	5.976 \| good	0.155 \| good
2026-04-24T10:00:00.000Z	58 \| moderate	12.692 \| fine	57.117 \| fine	39.579 \| good	0.273 \| good	5.448 \| good	0.151 \| good
2026-04-24T11:00:00.000Z	54 \| moderate	11.011 \| good	49.144 \| good	30.409 \| good	0.25 \| good	4.92 \| good	0.148 \| good
2026-04-24T12:00:00.000Z	56 \| moderate	12.087 \| good	54.203 \| good	29.693 \| good	0.227 \| good	4.392 \| good	0.144 \| good
2026-04-24T13:00:00.000Z	52 \| moderate	10.211 \| good	45.336 \| good	34.268 \| good	0.256 \| good	3.865 \| good	0.145 \| good
2026-04-24T14:00:00.000Z	49 \| good	8.849 \| good	39.589 \| good	39.598 \| good	0.285 \| good	3.338 \| good	0.146 \| good
2026-04-24T15:00:00.000Z	49 \| good	8.793 \| good	38.613 \| good	45.749 \| good	0.314 \| good	2.811 \| good	0.147 \| good
2026-04-24T16:00:00.000Z	45 \| good	7.786 \| good	34.187 \| good	49.433 \| good	0.292 \| good	2.225 \| good	0.137 \| good
2026-04-24T17:00:00.000Z	47 \| good	6.883 \| good	30.557 \| good	50.524 \| good	0.271 \| good	1.64 \| good	0.127 \| good
2026-04-24T18:00:00.000Z	49 \| good	5.057 \| good	22.201 \| good	53.284 \| good	0.249 \| good	1.054 \| good	0.117 \| good
2026-04-24T19:00:00.000Z	58 \| moderate	4.929 \| good	21.474 \| good	56.827 \| fine	0.212 \| good	0.851 \| good	0.114 \| good
2026-04-24T20:00:00.000Z	64 \| moderate	9.581 \| good	42.426 \| good	58.675 \| fine	0.175 \| good	0.648 \| good	0.112 \| good
2026-04-24T21:00:00.000Z	67 \| moderate	10.195 \| good	45.318 \| good	60.466 \| fine	0.139 \| good	0.445 \| good	0.109 \| good
2026-04-24T22:00:00.000Z	64 \| moderate	12.32 \| fine	54.556 \| good	59.366 \| fine	0.139 \| good	0.505 \| good	0.109 \| good
2026-04-24T23:00:00.000Z	61 \| moderate	5.917 \| good	26.487 \| good	58.35 \| fine	0.139 \| good	0.565 \| good	0.11 \| good
2026-04-25T00:00:00.000Z	79 \| moderate	24.176 \| fine	105.518 \| fine	55.704 \| fine	0.139 \| good	0.626 \| good	0.11 \| good
2026-04-25T01:00:00.000Z	115 \| sensitive	40.513 \| moderate	179.42 \| moderate	56.542 \| fine	0.22 \| good	2.843 \| good	0.127 \| good
2026-04-25T02:00:00.000Z	129 \| sensitive	47.064 \| moderate	212.095 \| moderate	52.324 \| good	0.3 \| good	5.059 \| good	0.144 \| good
2026-04-25T03:00:00.000Z	139 \| sensitive	50.601 \| moderate	229.445 \| moderate	50.93 \| good	0.381 \| good	7.276 \| good	0.161 \| good
2026-04-25T04:00:00.000Z	124 \| sensitive	44.888 \| moderate	200.807 \| moderate	49.046 \| good	0.357 \| good	6.718 \| good	0.16 \| good
2026-04-25T05:00:00.000Z	69 \| moderate	18.593 \| fine	82.187 \| fine	46.774 \| good	0.333 \| good	6.159 \| good	0.159 \| good
2026-04-25T06:00:00.000Z	39 \| good	3.794 \| good	16.409 \| good	42.383 \| good	0.309 \| good	5.6 \| good	0.158 \| good
2026-04-25T07:00:00.000Z	34 \| good	4.296 \| good	18.841 \| good	36.938 \| good	0.332 \| good	4.879 \| good	0.154 \| good
2026-04-25T08:00:00.000Z	32 \| good	3.583 \| good	15.72 \| good	34.663 \| good	0.355 \| good	4.158 \| good	0.15 \| good
2026-04-25T09:00:00.000Z	32 \| good	3.899 \| good	17.103 \| good	35.052 \| good	0.378 \| good	3.437 \| good	0.145 \| good
2026-04-25T10:00:00.000Z	31 \| good	3.416 \| good	14.99 \| good	33.868 \| good	0.38 \| good	3.827 \| good	0.147 \| good
2026-04-25T11:00:00.000Z	33 \| good	3.286 \| good	14.538 \| good	35.935 \| good	0.382 \| good	4.217 \| good	0.149 \| good
2026-04-25T12:00:00.000Z	31 \| good	3.953 \| good	17.426 \| good	33.854 \| good	0.384 \| good	4.607 \| good	0.15 \| good
2026-04-25T13:00:00.000Z	36 \| good	2.808 \| good	11.678 \| good	39.408 \| good	0.463 \| good	3.955 \| good	0.148 \| good
2026-04-25T14:00:00.000Z	38 \| good	3.147 \| good	13.68 \| good	41.32 \| good	0.543 \| good	3.304 \| good	0.146 \| good
2026-04-25T15:00:00.000Z	36 \| good	3.591 \| good	15.966 \| good	39.388 \| good	0.623 \| good	2.652 \| good	0.145 \| good
2026-04-25T16:00:00.000Z	36 \| good	4.02 \| good	17.565 \| good	39.311 \| good	0.628 \| good	2.459 \| good	0.144 \| good
2026-04-25T17:00:00.000Z	40 \| good	4.576 \| good	20.007 \| good	42.961 \| good	0.633 \| good	2.265 \| good	0.143 \| good
2026-04-25T18:00:00.000Z	41 \| good	4.396 \| good	19.445 \| good	44.294 \| good	0.638 \| good	2.072 \| good	0.142 \| good
2026-04-25T19:00:00.000Z	44 \| good	3.908 \| good	17.241 \| good	47.672 \| good	0.602 \| good	1.954 \| good	0.14 \| good
2026-04-25T20:00:00.000Z	48 \| good	3.432 \| good	15.049 \| good	51.598 \| good	0.567 \| good	1.837 \| good	0.138 \| good
2026-04-25T21:00:00.000Z	50 \| good	4.654 \| good	20.097 \| good	53.531 \| good	0.532 \| good	1.719 \| good	0.135 \| good
2026-04-25T22:00:00.000Z	51 \| moderate	1.461 \| good	5.759 \| good	55.437 \| fine	0.509 \| good	1.959 \| good	0.136 \| good
2026-04-25T23:00:00.000Z	54 \| moderate	0.789 \| good	3.058 \| good	55.62 \| fine	0.486 \| good	2.2 \| good	0.137 \| good
2026-04-26T00:00:00.000Z	54 \| moderate	5.193 \| good	7.848 \| good	55.769 \| fine	0.478 \| good	2.495 \| good	0.139 \| good
2026-04-26T01:00:00.000Z	48 \| good	5.567 \| good	23.691 \| good	52.34 \| good	0.519 \| good	3.894 \| good	0.149 \| good
2026-04-26T02:00:00.000Z	38 \| good	3.894 \| good	17.028 \| good	41.165 \| good	0.574 \| good	5.349 \| good	0.16 \| good
2026-04-26T03:00:00.000Z	36 \| good	2.719 \| good	11.193 \| good	39.295 \| good	0.629 \| good	6.803 \| good	0.17 \| good
2026-04-26T04:00:00.000Z	36 \| good	2.341 \| good	9.574 \| good	38.603 \| good	0.635 \| good	7.261 \| good	0.174 \| 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)

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Louisville, Colorado air quality map: Track AQI near you

Air quality in nearby cities

Lafayette, Colorado

Superior, Colorado

Broomfield, Colorado

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Boulder, Colorado

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Frequently asked questions

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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?