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

The current PM10 concentration at Louisville, Colorado is 15.871 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Louisville, Colorado is 0.626 ppb.

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

The current ozone (O3) concentration at Louisville, Colorado is 42.955 ppm.

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

The current nitrogen dioxide (NO2) concentration at Louisville, Colorado is 4.01 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 3.078 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)

3.08 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

15.87 μg/m³

155

255

425

605+

Ozone (O₃)

42.95 ppb

201

201+

Sulfur Dioxide (SO₂)

0.63 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.01 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.25 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
2026-06-06T13:00:00.000Z	38 \| good	6.956 \| good	33.206 \| good	38.986 \| good	0.602 \| good	12.962 \| good	0.233 \| good
2026-06-06T14:00:00.000Z	44 \| good	7.546 \| good	33.227 \| good	40.407 \| good	0.645 \| good	11.129 \| good	0.177 \| good
2026-06-06T15:00:00.000Z	49 \| good	8.569 \| good	40.07 \| good	43.013 \| good	0.905 \| good	11.338 \| good	0.223 \| good
2026-06-06T16:00:00.000Z	44 \| good	8.056 \| good	32.213 \| good	47.566 \| good	1.081 \| good	10.48 \| good	0.205 \| good
2026-06-06T17:00:00.000Z	50 \| good	8.352 \| good	32.141 \| good	54.404 \| good	0.923 \| good	9.632 \| good	0.193 \| good
2026-06-06T18:00:00.000Z	61 \| moderate	7.911 \| good	35.456 \| good	58.424 \| fine	1.027 \| good	10.382 \| good	0.25 \| good
2026-06-06T19:00:00.000Z	74 \| moderate	8.021 \| good	31.449 \| good	61.997 \| fine	0.8 \| good	10.509 \| good	0.217 \| good
2026-06-06T20:00:00.000Z	80 \| moderate	6.491 \| good	32.915 \| good	64.017 \| fine	0.615 \| good	7.04 \| good	0.188 \| good
2026-06-06T21:00:00.000Z	80 \| moderate	5.739 \| good	29.489 \| good	64.158 \| fine	0.59 \| good	4.137 \| good	0.128 \| good
2026-06-06T22:00:00.000Z	84 \| moderate	4.604 \| good	22.719 \| good	64.773 \| fine	0.578 \| good	3.508 \| good	0.128 \| good
2026-06-06T23:00:00.000Z	77 \| moderate	4.441 \| good	21.241 \| good	63.273 \| fine	0.678 \| good	4.143 \| good	0.128 \| good
2026-06-07T00:00:00.000Z	64 \| moderate	4.18 \| good	21.548 \| good	59.229 \| fine	0.615 \| good	5.392 \| good	0.157 \| good
2026-06-07T01:00:00.000Z	61 \| moderate	3.671 \| good	16.674 \| good	57.521 \| fine	0.578 \| good	7.464 \| good	0.185 \| good
2026-06-07T02:00:00.000Z	51 \| moderate	3.931 \| good	19.952 \| good	55.011 \| fine	0.628 \| good	9.154 \| good	0.23 \| good
2026-06-07T03:00:00.000Z	49 \| good	3.911 \| good	21.074 \| good	53.497 \| good	0.524 \| good	4.475 \| good	0.145 \| good
2026-06-07T04:00:00.000Z	50 \| good	3.972 \| good	28.542 \| good	53.727 \| good	0.678 \| good	4.675 \| good	0.157 \| good
2026-06-07T05:00:00.000Z	49 \| good	4.155 \| good	26.916 \| good	52.961 \| good	0.982 \| good	6.454 \| good	0.157 \| good
2026-06-07T06:00:00.000Z	46 \| good	5.217 \| good	34.46 \| good	50.451 \| good	1.056 \| good	8.283 \| good	0.218 \| good
2026-06-07T07:00:00.000Z	44 \| good	5.398 \| good	29.909 \| good	47.564 \| good	0.622 \| good	5.848 \| good	0.19 \| good
2026-06-07T08:00:00.000Z	44 \| good	4.503 \| good	32.868 \| good	46.657 \| good	0.579 \| good	7.353 \| good	0.161 \| good
2026-06-07T09:00:00.000Z	42 \| good	4.315 \| good	31.257 \| good	45.243 \| good	0.603 \| good	7.181 \| good	0.19 \| good
2026-06-07T10:00:00.000Z	39 \| good	4.362 \| good	22.7 \| good	42.418 \| good	0.593 \| good	8.772 \| good	0.157 \| good
2026-06-07T11:00:00.000Z	37 \| good	4.2 \| good	20.351 \| good	40.26 \| good	0.679 \| good	9.562 \| good	0.128 \| good
2026-06-07T12:00:00.000Z	37 \| good	4.487 \| good	21.47 \| good	40.485 \| good	0.552 \| good	16.035 \| good	0.161 \| good
2026-06-07T13:00:00.000Z	39 \| good	4.919 \| good	22.777 \| good	42.316 \| good	0.605 \| good	15.38 \| good	0.19 \| good
2026-06-07T14:00:00.000Z	38 \| good	4.588 \| good	20.444 \| good	40.741 \| good	0.784 \| good	8.922 \| good	0.206 \| good
2026-06-07T15:00:00.000Z	40 \| good	4.413 \| good	20.795 \| good	43.303 \| good	0.677 \| good	8.152 \| good	0.157 \| good
2026-06-07T16:00:00.000Z	44 \| good	4.054 \| good	19.983 \| good	46.913 \| good	1.155 \| good	8.267 \| good	0.145 \| good
2026-06-07T17:00:00.000Z	46 \| good	4.161 \| good	21.895 \| good	50.494 \| good	0.643 \| good	3.819 \| good	0.1 \| good
2026-06-07T18:00:00.000Z	49 \| good	4.299 \| good	20.652 \| good	53.458 \| good	0.624 \| good	3.021 \| good	0.1 \| good
2026-06-07T19:00:00.000Z	54 \| moderate	4.419 \| good	22.625 \| good	55.784 \| fine	0.64 \| good	3.359 \| good	0.128 \| good
2026-06-07T20:00:00.000Z	58 \| moderate	3.796 \| good	19.835 \| good	57.067 \| fine	0.615 \| good	3.175 \| good	0.128 \| good
2026-06-07T21:00:00.000Z	58 \| moderate	4.04 \| good	19.475 \| good	57.443 \| fine	0.627 \| good	3.777 \| good	0.128 \| good
2026-06-07T22:00:00.000Z	58 \| moderate	3.775 \| good	19.639 \| good	57.096 \| fine	0.536 \| good	5.591 \| good	0.157 \| good
2026-06-07T23:00:00.000Z	54 \| moderate	4.064 \| good	22.695 \| good	56.042 \| fine	0.577 \| good	6.101 \| good	0.201 \| good
2026-06-08T00:00:00.000Z	50 \| good	3.753 \| good	25.857 \| good	53.737 \| good	0.555 \| good	5.506 \| good	0.23 \| good
2026-06-08T01:00:00.000Z	47 \| good	3.523 \| good	21.04 \| good	51.359 \| good	0.527 \| good	9.668 \| good	0.234 \| good
2026-06-08T02:00:00.000Z	47 \| good	3.416 \| good	18.858 \| good	50.831 \| good	0.566 \| good	9.448 \| good	0.206 \| good
2026-06-08T03:00:00.000Z	42 \| good	5.382 \| good	23.252 \| good	44.64 \| good	0.156 \| good	7.584 \| good	0.159 \| good
2026-06-08T04:00:00.000Z	44 \| good	4.091 \| good	23.012 \| good	46.876 \| good	0.657 \| good	8.895 \| good	0.324 \| good
2026-06-08T05:00:00.000Z	42 \| good	3.605 \| good	21.122 \| good	45.253 \| good	0.66 \| good	8.829 \| good	0.329 \| good
2026-06-08T06:00:00.000Z	41 \| good	3.612 \| good	18.958 \| good	43.791 \| good	0.665 \| good	6.789 \| good	0.38 \| good
2026-06-08T07:00:00.000Z	41 \| good	3.569 \| good	18.434 \| good	43.507 \| good	0.613 \| good	11.026 \| good	0.342 \| good
2026-06-08T08:00:00.000Z	38 \| good	3.962 \| good	20.121 \| good	40.564 \| good	0.612 \| good	12.79 \| good	0.272 \| good
2026-06-08T09:00:00.000Z	38 \| good	3.606 \| good	18.603 \| good	41.413 \| good	0.64 \| good	10.246 \| good	0.24 \| good
2026-06-08T10:00:00.000Z	37 \| good	3.488 \| good	16.882 \| good	39.582 \| good	0.942 \| good	3.18 \| good	0.202 \| good
2026-06-08T11:00:00.000Z	37 \| good	3.585 \| good	19.18 \| good	40.133 \| good	0.79 \| good	4.818 \| good	0.157 \| good
2026-06-08T12:00:00.000Z	37 \| good	3.286 \| good	17.507 \| good	40.475 \| good	0.628 \| good	4.174 \| good	0.242 \| good
2026-06-08T12:00:00.000Z	40 \| good	3.078 \| good	15.871 \| good	42.955 \| good	0.626 \| good	4.01 \| good	0.249 \| good
2026-06-08T13:00:00.000Z	44 \| good	8.237 \| good	36.106 \| good	31.061 \| good	0.104 \| good	4.069 \| good	0.124 \| good
2026-06-08T14:00:00.000Z	56 \| moderate	12.192 \| fine	54.823 \| good	38.092 \| good	0.151 \| good	2.209 \| good	0.11 \| good
2026-06-08T15:00:00.000Z	58 \| moderate	12.851 \| fine	58.393 \| fine	41.628 \| good	0.285 \| good	1.562 \| good	0.107 \| good
2026-06-08T16:00:00.000Z	60 \| moderate	13.665 \| fine	61.46 \| fine	47.259 \| good	0.318 \| good	1.202 \| good	0.107 \| good
2026-06-08T17:00:00.000Z	62 \| moderate	14.863 \| fine	65.898 \| fine	52.728 \| good	0.31 \| good	1.123 \| good	0.107 \| good
2026-06-08T18:00:00.000Z	67 \| moderate	15.067 \| fine	67.367 \| fine	60.012 \| fine	0.294 \| good	0.877 \| good	0.107 \| good
2026-06-08T19:00:00.000Z	74 \| moderate	12.306 \| fine	55.253 \| fine	61.701 \| fine	0.254 \| good	0.848 \| good	0.106 \| good
2026-06-08T20:00:00.000Z	80 \| moderate	9.021 \| good	39.642 \| good	64.198 \| fine	0.227 \| good	0.798 \| good	0.105 \| good
2026-06-08T21:00:00.000Z	74 \| moderate	5.408 \| good	23.402 \| good	62.064 \| fine	0.207 \| good	0.857 \| good	0.105 \| good
2026-06-08T22:00:00.000Z	61 \| moderate	2.339 \| good	9.536 \| good	57.997 \| fine	0.218 \| good	0.959 \| good	0.106 \| good
2026-06-08T23:00:00.000Z	61 \| moderate	1.591 \| good	6.398 \| good	58.281 \| fine	0.25 \| good	1.114 \| good	0.108 \| good
2026-06-09T00:00:00.000Z	58 \| moderate	1.852 \| good	7.496 \| good	57.256 \| fine	0.254 \| good	1.417 \| good	0.109 \| good
2026-06-09T01:00:00.000Z	50 \| good	1.6 \| good	6.302 \| good	54.003 \| good	0.272 \| good	2.486 \| good	0.118 \| good
2026-06-09T02:00:00.000Z	46 \| good	0.631 \| good	2.466 \| good	50.49 \| good	0.304 \| good	3.401 \| good	0.124 \| good
2026-06-09T03:00:00.000Z	43 \| good	1.311 \| good	5.487 \| good	45.902 \| good	0.316 \| good	5.412 \| good	0.138 \| good
2026-06-09T04:00:00.000Z	42 \| good	3.363 \| good	14.043 \| good	44.972 \| good	0.324 \| good	5.857 \| good	0.142 \| good
2026-06-09T05:00:00.000Z	44 \| good	7.922 \| good	34.834 \| good	38.954 \| good	0.334 \| good	6.374 \| good	0.146 \| good
2026-06-09T06:00:00.000Z	52 \| moderate	10.356 \| good	46.301 \| good	38.301 \| good	0.328 \| good	6.933 \| good	0.152 \| good
2026-06-09T07:00:00.000Z	44 \| good	7.514 \| good	33.353 \| good	33.211 \| good	0.309 \| good	6.978 \| good	0.155 \| good
2026-06-09T08:00:00.000Z	33 \| good	5.939 \| good	25.992 \| good	30.323 \| good	0.291 \| good	6.918 \| good	0.154 \| good
2026-06-09T09:00:00.000Z	29 \| good	5.161 \| good	22.429 \| good	30.64 \| good	0.27 \| good	6.992 \| good	0.155 \| good
2026-06-09T10:00:00.000Z	29 \| good	4.19 \| good	18.131 \| good	31.139 \| good	0.249 \| good	7.359 \| good	0.154 \| good
2026-06-09T11:00:00.000Z	29 \| good	4.967 \| good	21.329 \| good	31.479 \| good	0.221 \| good	7.516 \| good	0.152 \| good
2026-06-09T12:00:00.000Z	28 \| good	5.481 \| good	24.281 \| good	30.167 \| good	0.199 \| good	6.864 \| good	0.149 \| good
2026-06-09T13:00:00.000Z	38 \| good	7.079 \| good	30.97 \| good	26.747 \| good	0.174 \| good	4.812 \| good	0.144 \| good
2026-06-09T14:00:00.000Z	49 \| good	8.764 \| good	38.741 \| good	33.455 \| good	0.172 \| good	3.687 \| good	0.137 \| good
2026-06-09T15:00:00.000Z	49 \| good	8.645 \| good	38.739 \| good	42.56 \| good	0.194 \| good	2.714 \| good	0.125 \| good
2026-06-09T16:00:00.000Z	49 \| good	9.498 \| good	42.023 \| good	53.232 \| good	0.198 \| good	1.748 \| good	0.109 \| good
2026-06-09T17:00:00.000Z	77 \| moderate	8.986 \| good	39.553 \| good	62.661 \| fine	0.133 \| good	0.648 \| good	0.091 \| good
2026-06-09T18:00:00.000Z	77 \| moderate	9.474 \| good	41.825 \| good	63.301 \| fine	0.101 \| good	0.38 \| good	0.085 \| good
2026-06-09T19:00:00.000Z	77 \| moderate	12.339 \| fine	54.819 \| good	62.792 \| fine	0.083 \| good	0.291 \| good	0.083 \| good
2026-06-09T20:00:00.000Z	137 \| sensitive	50.463 \| moderate	227.757 \| moderate	61.213 \| fine	0.077 \| good	0.26 \| good	0.083 \| good
2026-06-09T21:00:00.000Z	156 \| unhealthy	62.969 \| poor	261.758 \| poor	58.122 \| fine	0.076 \| good	0.266 \| good	0.085 \| good
2026-06-09T22:00:00.000Z	112 \| sensitive	40.277 \| moderate	178.444 \| moderate	55.651 \| fine	0.071 \| good	0.281 \| good	0.086 \| good
2026-06-09T23:00:00.000Z	79 \| moderate	23.859 \| fine	104.49 \| fine	54.908 \| good	0.064 \| good	0.304 \| good	0.087 \| good
2026-06-10T00:00:00.000Z	60 \| moderate	13.621 \| fine	60.441 \| fine	52.45 \| good	0.06 \| good	0.356 \| good	0.088 \| good
2026-06-10T01:00:00.000Z	67 \| moderate	18.267 \| fine	81.068 \| fine	49.304 \| good	0.061 \| good	0.702 \| good	0.091 \| good
2026-06-10T02:00:00.000Z	94 \| moderate	32.294 \| fine	139.869 \| fine	45.295 \| good	0.072 \| good	1.722 \| good	0.099 \| good
2026-06-10T03:00:00.000Z	115 \| sensitive	40.645 \| moderate	180.234 \| moderate	46.411 \| good	0.098 \| good	4.201 \| good	0.117 \| good
2026-06-10T04:00:00.000Z	99 \| moderate	35.106 \| fine	152.475 \| fine	53.477 \| good	0.115 \| good	5.77 \| good	0.13 \| good
2026-06-10T05:00:00.000Z	137 \| sensitive	50.127 \| moderate	226.229 \| moderate	48.994 \| good	0.119 \| good	6.809 \| good	0.139 \| good
2026-06-10T06:00:00.000Z	33 \| good	5.879 \| good	8.492 \| good	27.01 \| good	0.11 \| good	6.855 \| good	0.142 \| good
2026-06-10T07:00:00.000Z	166 \| unhealthy	76.657 \| poor	276.43 \| poor	39.943 \| good	0.103 \| good	5.086 \| good	0.129 \| good
2026-06-10T08:00:00.000Z	161 \| unhealthy	70.432 \| poor	270.494 \| poor	34.393 \| good	0.1 \| good	4.203 \| good	0.122 \| good
2026-06-10T09:00:00.000Z	160 \| unhealthy	68.5 \| poor	268.295 \| poor	27.896 \| good	0.096 \| good	3.696 \| good	0.118 \| good
2026-06-10T10:00:00.000Z	159 \| unhealthy	67.272 \| poor	267.411 \| poor	28.783 \| good	0.096 \| good	3.54 \| good	0.116 \| good
2026-06-10T11:00:00.000Z	160 \| unhealthy	68.481 \| poor	268.128 \| poor	24.819 \| good	0.099 \| good	3.797 \| good	0.117 \| good
2026-06-10T12:00:00.000Z	27 \| good	5.169 \| good	8.051 \| good	26.75 \| good	0.103 \| good	3.913 \| good	0.118 \| good

Louisville

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Louisville, Colorado air quality map: Track AQI near you

0.16ppm

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

Air quality levels in US

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 10:00:00 on 2026-06-07.

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 11:00:00 on 2026-06-08.

What is the current air quality in Louisville, Colorado?

The current air quality in Louisville, Colorado is 40, 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 3.078 μg/m³.

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

The current PM₁₀ concentration at Louisville, Colorado is 15.871 μg/m³.

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

The current carbon monoxide (CO) concentration at Louisville, Colorado is 0.249 ppm.

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

The current sulfur dioxide (SO₂) concentration at Louisville, Colorado is 0.626 ppb.

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

The current ozone (O₃) concentration at Louisville, Colorado is 42.955 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Louisville, Colorado is 4.01 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-06-06T13:00:00.000Z	38 \| good	6.956 \| good	33.206 \| good	38.986 \| good	0.602 \| good	12.962 \| good	0.233 \| good
2026-06-06T14:00:00.000Z	44 \| good	7.546 \| good	33.227 \| good	40.407 \| good	0.645 \| good	11.129 \| good	0.177 \| good
2026-06-06T15:00:00.000Z	49 \| good	8.569 \| good	40.07 \| good	43.013 \| good	0.905 \| good	11.338 \| good	0.223 \| good
2026-06-06T16:00:00.000Z	44 \| good	8.056 \| good	32.213 \| good	47.566 \| good	1.081 \| good	10.48 \| good	0.205 \| good
2026-06-06T17:00:00.000Z	50 \| good	8.352 \| good	32.141 \| good	54.404 \| good	0.923 \| good	9.632 \| good	0.193 \| good
2026-06-06T18:00:00.000Z	61 \| moderate	7.911 \| good	35.456 \| good	58.424 \| fine	1.027 \| good	10.382 \| good	0.25 \| good
2026-06-06T19:00:00.000Z	74 \| moderate	8.021 \| good	31.449 \| good	61.997 \| fine	0.8 \| good	10.509 \| good	0.217 \| good
2026-06-06T20:00:00.000Z	80 \| moderate	6.491 \| good	32.915 \| good	64.017 \| fine	0.615 \| good	7.04 \| good	0.188 \| good
2026-06-06T21:00:00.000Z	80 \| moderate	5.739 \| good	29.489 \| good	64.158 \| fine	0.59 \| good	4.137 \| good	0.128 \| good
2026-06-06T22:00:00.000Z	84 \| moderate	4.604 \| good	22.719 \| good	64.773 \| fine	0.578 \| good	3.508 \| good	0.128 \| good
2026-06-06T23:00:00.000Z	77 \| moderate	4.441 \| good	21.241 \| good	63.273 \| fine	0.678 \| good	4.143 \| good	0.128 \| good
2026-06-07T00:00:00.000Z	64 \| moderate	4.18 \| good	21.548 \| good	59.229 \| fine	0.615 \| good	5.392 \| good	0.157 \| good
2026-06-07T01:00:00.000Z	61 \| moderate	3.671 \| good	16.674 \| good	57.521 \| fine	0.578 \| good	7.464 \| good	0.185 \| good
2026-06-07T02:00:00.000Z	51 \| moderate	3.931 \| good	19.952 \| good	55.011 \| fine	0.628 \| good	9.154 \| good	0.23 \| good
2026-06-07T03:00:00.000Z	49 \| good	3.911 \| good	21.074 \| good	53.497 \| good	0.524 \| good	4.475 \| good	0.145 \| good
2026-06-07T04:00:00.000Z	50 \| good	3.972 \| good	28.542 \| good	53.727 \| good	0.678 \| good	4.675 \| good	0.157 \| good
2026-06-07T05:00:00.000Z	49 \| good	4.155 \| good	26.916 \| good	52.961 \| good	0.982 \| good	6.454 \| good	0.157 \| good
2026-06-07T06:00:00.000Z	46 \| good	5.217 \| good	34.46 \| good	50.451 \| good	1.056 \| good	8.283 \| good	0.218 \| good
2026-06-07T07:00:00.000Z	44 \| good	5.398 \| good	29.909 \| good	47.564 \| good	0.622 \| good	5.848 \| good	0.19 \| good
2026-06-07T08:00:00.000Z	44 \| good	4.503 \| good	32.868 \| good	46.657 \| good	0.579 \| good	7.353 \| good	0.161 \| good
2026-06-07T09:00:00.000Z	42 \| good	4.315 \| good	31.257 \| good	45.243 \| good	0.603 \| good	7.181 \| good	0.19 \| good
2026-06-07T10:00:00.000Z	39 \| good	4.362 \| good	22.7 \| good	42.418 \| good	0.593 \| good	8.772 \| good	0.157 \| good
2026-06-07T11:00:00.000Z	37 \| good	4.2 \| good	20.351 \| good	40.26 \| good	0.679 \| good	9.562 \| good	0.128 \| good
2026-06-07T12:00:00.000Z	37 \| good	4.487 \| good	21.47 \| good	40.485 \| good	0.552 \| good	16.035 \| good	0.161 \| good
2026-06-07T13:00:00.000Z	39 \| good	4.919 \| good	22.777 \| good	42.316 \| good	0.605 \| good	15.38 \| good	0.19 \| good
2026-06-07T14:00:00.000Z	38 \| good	4.588 \| good	20.444 \| good	40.741 \| good	0.784 \| good	8.922 \| good	0.206 \| good
2026-06-07T15:00:00.000Z	40 \| good	4.413 \| good	20.795 \| good	43.303 \| good	0.677 \| good	8.152 \| good	0.157 \| good
2026-06-07T16:00:00.000Z	44 \| good	4.054 \| good	19.983 \| good	46.913 \| good	1.155 \| good	8.267 \| good	0.145 \| good
2026-06-07T17:00:00.000Z	46 \| good	4.161 \| good	21.895 \| good	50.494 \| good	0.643 \| good	3.819 \| good	0.1 \| good
2026-06-07T18:00:00.000Z	49 \| good	4.299 \| good	20.652 \| good	53.458 \| good	0.624 \| good	3.021 \| good	0.1 \| good
2026-06-07T19:00:00.000Z	54 \| moderate	4.419 \| good	22.625 \| good	55.784 \| fine	0.64 \| good	3.359 \| good	0.128 \| good
2026-06-07T20:00:00.000Z	58 \| moderate	3.796 \| good	19.835 \| good	57.067 \| fine	0.615 \| good	3.175 \| good	0.128 \| good
2026-06-07T21:00:00.000Z	58 \| moderate	4.04 \| good	19.475 \| good	57.443 \| fine	0.627 \| good	3.777 \| good	0.128 \| good
2026-06-07T22:00:00.000Z	58 \| moderate	3.775 \| good	19.639 \| good	57.096 \| fine	0.536 \| good	5.591 \| good	0.157 \| good
2026-06-07T23:00:00.000Z	54 \| moderate	4.064 \| good	22.695 \| good	56.042 \| fine	0.577 \| good	6.101 \| good	0.201 \| good
2026-06-08T00:00:00.000Z	50 \| good	3.753 \| good	25.857 \| good	53.737 \| good	0.555 \| good	5.506 \| good	0.23 \| good
2026-06-08T01:00:00.000Z	47 \| good	3.523 \| good	21.04 \| good	51.359 \| good	0.527 \| good	9.668 \| good	0.234 \| good
2026-06-08T02:00:00.000Z	47 \| good	3.416 \| good	18.858 \| good	50.831 \| good	0.566 \| good	9.448 \| good	0.206 \| good
2026-06-08T03:00:00.000Z	42 \| good	5.382 \| good	23.252 \| good	44.64 \| good	0.156 \| good	7.584 \| good	0.159 \| good
2026-06-08T04:00:00.000Z	44 \| good	4.091 \| good	23.012 \| good	46.876 \| good	0.657 \| good	8.895 \| good	0.324 \| good
2026-06-08T05:00:00.000Z	42 \| good	3.605 \| good	21.122 \| good	45.253 \| good	0.66 \| good	8.829 \| good	0.329 \| good
2026-06-08T06:00:00.000Z	41 \| good	3.612 \| good	18.958 \| good	43.791 \| good	0.665 \| good	6.789 \| good	0.38 \| good
2026-06-08T07:00:00.000Z	41 \| good	3.569 \| good	18.434 \| good	43.507 \| good	0.613 \| good	11.026 \| good	0.342 \| good
2026-06-08T08:00:00.000Z	38 \| good	3.962 \| good	20.121 \| good	40.564 \| good	0.612 \| good	12.79 \| good	0.272 \| good
2026-06-08T09:00:00.000Z	38 \| good	3.606 \| good	18.603 \| good	41.413 \| good	0.64 \| good	10.246 \| good	0.24 \| good
2026-06-08T10:00:00.000Z	37 \| good	3.488 \| good	16.882 \| good	39.582 \| good	0.942 \| good	3.18 \| good	0.202 \| good
2026-06-08T11:00:00.000Z	37 \| good	3.585 \| good	19.18 \| good	40.133 \| good	0.79 \| good	4.818 \| good	0.157 \| good
2026-06-08T12:00:00.000Z	37 \| good	3.286 \| good	17.507 \| good	40.475 \| good	0.628 \| good	4.174 \| good	0.242 \| good
2026-06-08T12:00:00.000Z	40 \| good	3.078 \| good	15.871 \| good	42.955 \| good	0.626 \| good	4.01 \| good	0.249 \| good
2026-06-08T13:00:00.000Z	44 \| good	8.237 \| good	36.106 \| good	31.061 \| good	0.104 \| good	4.069 \| good	0.124 \| good
2026-06-08T14:00:00.000Z	56 \| moderate	12.192 \| fine	54.823 \| good	38.092 \| good	0.151 \| good	2.209 \| good	0.11 \| good
2026-06-08T15:00:00.000Z	58 \| moderate	12.851 \| fine	58.393 \| fine	41.628 \| good	0.285 \| good	1.562 \| good	0.107 \| good
2026-06-08T16:00:00.000Z	60 \| moderate	13.665 \| fine	61.46 \| fine	47.259 \| good	0.318 \| good	1.202 \| good	0.107 \| good
2026-06-08T17:00:00.000Z	62 \| moderate	14.863 \| fine	65.898 \| fine	52.728 \| good	0.31 \| good	1.123 \| good	0.107 \| good
2026-06-08T18:00:00.000Z	67 \| moderate	15.067 \| fine	67.367 \| fine	60.012 \| fine	0.294 \| good	0.877 \| good	0.107 \| good
2026-06-08T19:00:00.000Z	74 \| moderate	12.306 \| fine	55.253 \| fine	61.701 \| fine	0.254 \| good	0.848 \| good	0.106 \| good
2026-06-08T20:00:00.000Z	80 \| moderate	9.021 \| good	39.642 \| good	64.198 \| fine	0.227 \| good	0.798 \| good	0.105 \| good
2026-06-08T21:00:00.000Z	74 \| moderate	5.408 \| good	23.402 \| good	62.064 \| fine	0.207 \| good	0.857 \| good	0.105 \| good
2026-06-08T22:00:00.000Z	61 \| moderate	2.339 \| good	9.536 \| good	57.997 \| fine	0.218 \| good	0.959 \| good	0.106 \| good
2026-06-08T23:00:00.000Z	61 \| moderate	1.591 \| good	6.398 \| good	58.281 \| fine	0.25 \| good	1.114 \| good	0.108 \| good
2026-06-09T00:00:00.000Z	58 \| moderate	1.852 \| good	7.496 \| good	57.256 \| fine	0.254 \| good	1.417 \| good	0.109 \| good
2026-06-09T01:00:00.000Z	50 \| good	1.6 \| good	6.302 \| good	54.003 \| good	0.272 \| good	2.486 \| good	0.118 \| good
2026-06-09T02:00:00.000Z	46 \| good	0.631 \| good	2.466 \| good	50.49 \| good	0.304 \| good	3.401 \| good	0.124 \| good
2026-06-09T03:00:00.000Z	43 \| good	1.311 \| good	5.487 \| good	45.902 \| good	0.316 \| good	5.412 \| good	0.138 \| good
2026-06-09T04:00:00.000Z	42 \| good	3.363 \| good	14.043 \| good	44.972 \| good	0.324 \| good	5.857 \| good	0.142 \| good
2026-06-09T05:00:00.000Z	44 \| good	7.922 \| good	34.834 \| good	38.954 \| good	0.334 \| good	6.374 \| good	0.146 \| good
2026-06-09T06:00:00.000Z	52 \| moderate	10.356 \| good	46.301 \| good	38.301 \| good	0.328 \| good	6.933 \| good	0.152 \| good
2026-06-09T07:00:00.000Z	44 \| good	7.514 \| good	33.353 \| good	33.211 \| good	0.309 \| good	6.978 \| good	0.155 \| good
2026-06-09T08:00:00.000Z	33 \| good	5.939 \| good	25.992 \| good	30.323 \| good	0.291 \| good	6.918 \| good	0.154 \| good
2026-06-09T09:00:00.000Z	29 \| good	5.161 \| good	22.429 \| good	30.64 \| good	0.27 \| good	6.992 \| good	0.155 \| good
2026-06-09T10:00:00.000Z	29 \| good	4.19 \| good	18.131 \| good	31.139 \| good	0.249 \| good	7.359 \| good	0.154 \| good
2026-06-09T11:00:00.000Z	29 \| good	4.967 \| good	21.329 \| good	31.479 \| good	0.221 \| good	7.516 \| good	0.152 \| good
2026-06-09T12:00:00.000Z	28 \| good	5.481 \| good	24.281 \| good	30.167 \| good	0.199 \| good	6.864 \| good	0.149 \| good
2026-06-09T13:00:00.000Z	38 \| good	7.079 \| good	30.97 \| good	26.747 \| good	0.174 \| good	4.812 \| good	0.144 \| good
2026-06-09T14:00:00.000Z	49 \| good	8.764 \| good	38.741 \| good	33.455 \| good	0.172 \| good	3.687 \| good	0.137 \| good
2026-06-09T15:00:00.000Z	49 \| good	8.645 \| good	38.739 \| good	42.56 \| good	0.194 \| good	2.714 \| good	0.125 \| good
2026-06-09T16:00:00.000Z	49 \| good	9.498 \| good	42.023 \| good	53.232 \| good	0.198 \| good	1.748 \| good	0.109 \| good
2026-06-09T17:00:00.000Z	77 \| moderate	8.986 \| good	39.553 \| good	62.661 \| fine	0.133 \| good	0.648 \| good	0.091 \| good
2026-06-09T18:00:00.000Z	77 \| moderate	9.474 \| good	41.825 \| good	63.301 \| fine	0.101 \| good	0.38 \| good	0.085 \| good
2026-06-09T19:00:00.000Z	77 \| moderate	12.339 \| fine	54.819 \| good	62.792 \| fine	0.083 \| good	0.291 \| good	0.083 \| good
2026-06-09T20:00:00.000Z	137 \| sensitive	50.463 \| moderate	227.757 \| moderate	61.213 \| fine	0.077 \| good	0.26 \| good	0.083 \| good
2026-06-09T21:00:00.000Z	156 \| unhealthy	62.969 \| poor	261.758 \| poor	58.122 \| fine	0.076 \| good	0.266 \| good	0.085 \| good
2026-06-09T22:00:00.000Z	112 \| sensitive	40.277 \| moderate	178.444 \| moderate	55.651 \| fine	0.071 \| good	0.281 \| good	0.086 \| good
2026-06-09T23:00:00.000Z	79 \| moderate	23.859 \| fine	104.49 \| fine	54.908 \| good	0.064 \| good	0.304 \| good	0.087 \| good
2026-06-10T00:00:00.000Z	60 \| moderate	13.621 \| fine	60.441 \| fine	52.45 \| good	0.06 \| good	0.356 \| good	0.088 \| good
2026-06-10T01:00:00.000Z	67 \| moderate	18.267 \| fine	81.068 \| fine	49.304 \| good	0.061 \| good	0.702 \| good	0.091 \| good
2026-06-10T02:00:00.000Z	94 \| moderate	32.294 \| fine	139.869 \| fine	45.295 \| good	0.072 \| good	1.722 \| good	0.099 \| good
2026-06-10T03:00:00.000Z	115 \| sensitive	40.645 \| moderate	180.234 \| moderate	46.411 \| good	0.098 \| good	4.201 \| good	0.117 \| good
2026-06-10T04:00:00.000Z	99 \| moderate	35.106 \| fine	152.475 \| fine	53.477 \| good	0.115 \| good	5.77 \| good	0.13 \| good
2026-06-10T05:00:00.000Z	137 \| sensitive	50.127 \| moderate	226.229 \| moderate	48.994 \| good	0.119 \| good	6.809 \| good	0.139 \| good
2026-06-10T06:00:00.000Z	33 \| good	5.879 \| good	8.492 \| good	27.01 \| good	0.11 \| good	6.855 \| good	0.142 \| good
2026-06-10T07:00:00.000Z	166 \| unhealthy	76.657 \| poor	276.43 \| poor	39.943 \| good	0.103 \| good	5.086 \| good	0.129 \| good
2026-06-10T08:00:00.000Z	161 \| unhealthy	70.432 \| poor	270.494 \| poor	34.393 \| good	0.1 \| good	4.203 \| good	0.122 \| good
2026-06-10T09:00:00.000Z	160 \| unhealthy	68.5 \| poor	268.295 \| poor	27.896 \| good	0.096 \| good	3.696 \| good	0.118 \| good
2026-06-10T10:00:00.000Z	159 \| unhealthy	67.272 \| poor	267.411 \| poor	28.783 \| good	0.096 \| good	3.54 \| good	0.116 \| good
2026-06-10T11:00:00.000Z	160 \| unhealthy	68.481 \| poor	268.128 \| poor	24.819 \| good	0.099 \| good	3.797 \| good	0.117 \| good
2026-06-10T12:00:00.000Z	27 \| good	5.169 \| good	8.051 \| good	26.75 \| good	0.103 \| good	3.913 \| good	0.118 \| 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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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?