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

The current PM10 concentration at Louisville, Colorado is 77.348 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Louisville, Colorado is 0.321 ppb.

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

The current ozone (O3) concentration at Louisville, Colorado is 62.235 ppm.

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

The current nitrogen dioxide (NO2) concentration at Louisville, Colorado is 6.965 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)

Moderate

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)

22.75 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

72.27 μg/m³

155

255

425

605+

Ozone (O₃)

64.38 ppb

201

201+

Sulfur Dioxide (SO₂)

0.30 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

7.93 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.30 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
2025-09-05T00:00:00.000Z	75 \| moderate	22.258 \| fine	75.343 \| fine	60.566 \| fine	0.47 \| good	9.145 \| good	0.311 \| good
2025-09-05T01:00:00.000Z	90 \| moderate	30.007 \| fine	97.621 \| fine	57.897 \| fine	0.383 \| good	9.895 \| good	0.349 \| good
2025-09-05T02:00:00.000Z	99 \| moderate	35.29 \| fine	93.07 \| fine	59.739 \| fine	0.5 \| good	7.387 \| good	0.4 \| good
2025-09-05T03:00:00.000Z	132 \| sensitive	48.454 \| moderate	126.369 \| fine	56.061 \| fine	0.405 \| good	6.621 \| good	0.355 \| good
2025-09-05T04:00:00.000Z	132 \| sensitive	47.607 \| moderate	134.671 \| fine	51.649 \| good	0.413 \| good	9.253 \| good	0.278 \| good
2025-09-05T05:00:00.000Z	119 \| sensitive	42.669 \| moderate	109.607 \| fine	47.677 \| good	0.413 \| good	7.874 \| good	0.245 \| good
2025-09-05T06:00:00.000Z	107 \| sensitive	38.444 \| moderate	136.365 \| fine	44.782 \| good	0.407 \| good	4.216 \| good	0.245 \| good
2025-09-05T07:00:00.000Z	107 \| sensitive	38.162 \| moderate	121.57 \| fine	39.394 \| good	0.256 \| good	3.602 \| good	0.216 \| good
2025-09-05T08:00:00.000Z	96 \| moderate	33.088 \| fine	86.354 \| fine	36.257 \| good	0.295 \| good	4.015 \| good	0.216 \| good
2025-09-05T09:00:00.000Z	90 \| moderate	29.55 \| fine	87.778 \| fine	35.16 \| good	0.251 \| good	5.404 \| good	0.245 \| good
2025-09-05T10:00:00.000Z	86 \| moderate	28.188 \| fine	90.6 \| fine	32.632 \| good	0.298 \| good	5.703 \| good	0.2 \| good
2025-09-05T11:00:00.000Z	84 \| moderate	26.996 \| fine	99.074 \| fine	30.553 \| good	0.29 \| good	5.813 \| good	0.233 \| good
2025-09-05T12:00:00.000Z	82 \| moderate	26.46 \| fine	89.124 \| fine	30.156 \| good	0.286 \| good	7.342 \| good	0.233 \| good
2025-09-05T13:00:00.000Z	79 \| moderate	24.245 \| fine	85.794 \| fine	30.255 \| good	0.258 \| good	7.074 \| good	0.233 \| good
2025-09-05T14:00:00.000Z	77 \| moderate	22.836 \| fine	70.268 \| fine	32.839 \| good	0.19 \| good	6.58 \| good	0.2 \| good
2025-09-05T15:00:00.000Z	79 \| moderate	24.123 \| fine	70.953 \| fine	35.085 \| good	0.175 \| good	6.454 \| good	0.245 \| good
2025-09-05T16:00:00.000Z	75 \| moderate	22.166 \| fine	74.763 \| fine	34.974 \| good	0.315 \| good	6.117 \| good	0.278 \| good
2025-09-05T17:00:00.000Z	77 \| moderate	22.524 \| fine	78.362 \| fine	36.791 \| good	0.254 \| good	5.286 \| good	0.228 \| good
2025-09-05T18:00:00.000Z	75 \| moderate	21.677 \| fine	61.998 \| fine	37.989 \| good	0.247 \| good	5.578 \| good	0.245 \| good
2025-09-05T19:00:00.000Z	75 \| moderate	22.1 \| fine	69.834 \| fine	39.903 \| good	0.408 \| good	6.156 \| good	0.228 \| good
2025-09-05T20:00:00.000Z	73 \| moderate	21.253 \| fine	66.932 \| fine	39.751 \| good	0.371 \| good	8.003 \| good	0.306 \| good
2025-09-05T21:00:00.000Z	73 \| moderate	21.049 \| fine	67.919 \| fine	41.043 \| good	0.316 \| good	7.358 \| good	0.323 \| good
2025-09-05T22:00:00.000Z	75 \| moderate	22.294 \| fine	76.694 \| fine	42.138 \| good	0.343 \| good	6.938 \| good	0.228 \| good
2025-09-05T23:00:00.000Z	75 \| moderate	22.171 \| fine	72.642 \| fine	42.981 \| good	0.305 \| good	7.512 \| good	0.245 \| good
2025-09-06T00:00:00.000Z	75 \| moderate	21.596 \| fine	65.177 \| fine	41.633 \| good	0.341 \| good	9.274 \| good	0.273 \| good
2025-09-06T01:00:00.000Z	75 \| moderate	21.583 \| fine	71.045 \| fine	40.797 \| good	0.343 \| good	10.723 \| good	0.33 \| good
2025-09-06T02:00:00.000Z	71 \| moderate	20.462 \| fine	77.094 \| fine	38.38 \| good	0.284 \| good	11.191 \| good	0.358 \| good
2025-09-06T03:00:00.000Z	71 \| moderate	20.038 \| fine	70.999 \| fine	36.295 \| good	0.228 \| good	13.413 \| good	0.408 \| good
2025-09-06T04:00:00.000Z	73 \| moderate	21.054 \| fine	68.937 \| fine	35.945 \| good	0.338 \| good	12.072 \| good	0.351 \| good
2025-09-06T05:00:00.000Z	75 \| moderate	21.564 \| fine	71.403 \| fine	33.465 \| good	0.317 \| good	12.406 \| good	0.457 \| good
2025-09-06T06:00:00.000Z	75 \| moderate	22.127 \| fine	74.521 \| fine	29.791 \| good	0.244 \| good	17.417 \| good	0.469 \| good
2025-09-06T07:00:00.000Z	75 \| moderate	22.462 \| fine	79.549 \| fine	29.118 \| good	0.341 \| good	16.774 \| good	0.469 \| good
2025-09-06T08:00:00.000Z	75 \| moderate	21.754 \| fine	73.311 \| fine	25.74 \| good	0.38 \| good	18.693 \| good	0.392 \| good
2025-09-06T09:00:00.000Z	77 \| moderate	23.07 \| fine	65.656 \| fine	26.739 \| good	0.276 \| good	14.231 \| good	0.363 \| good
2025-09-06T10:00:00.000Z	77 \| moderate	22.861 \| fine	65.899 \| fine	25.46 \| good	0.246 \| good	9.89 \| good	0.323 \| good
2025-09-06T11:00:00.000Z	77 \| moderate	22.705 \| fine	60.527 \| fine	23.845 \| good	0.263 \| good	10.292 \| good	0.262 \| good
2025-09-06T12:00:00.000Z	77 \| moderate	22.692 \| fine	69.007 \| fine	23.92 \| good	0.38 \| good	8.723 \| good	0.261 \| good
2025-09-06T13:00:00.000Z	77 \| moderate	23.426 \| fine	84.764 \| fine	24.317 \| good	0.48 \| good	10.081 \| good	0.35 \| good
2025-09-06T14:00:00.000Z	79 \| moderate	23.942 \| fine	70.027 \| fine	23.717 \| good	0.783 \| good	10.742 \| good	0.35 \| good
2025-09-06T15:00:00.000Z	77 \| moderate	23.156 \| fine	73.505 \| fine	25.949 \| good	1.007 \| good	11.62 \| good	0.321 \| good
2025-09-06T16:00:00.000Z	79 \| moderate	23.685 \| fine	64.855 \| fine	29.153 \| good	1.378 \| good	11.6 \| good	0.306 \| good
2025-09-06T17:00:00.000Z	79 \| moderate	23.548 \| fine	66.743 \| fine	31.66 \| good	0.729 \| good	9.31 \| good	0.261 \| good
2025-09-06T18:00:00.000Z	79 \| moderate	23.531 \| fine	68.308 \| fine	36.422 \| good	0.4 \| good	6.409 \| good	0.278 \| good
2025-09-06T19:00:00.000Z	77 \| moderate	22.913 \| fine	66.833 \| fine	42.706 \| good	0.401 \| good	5.649 \| good	0.278 \| good
2025-09-06T20:00:00.000Z	77 \| moderate	22.882 \| fine	68.476 \| fine	49.811 \| good	0.334 \| good	5.131 \| good	0.245 \| good
2025-09-06T21:00:00.000Z	77 \| moderate	22.643 \| fine	75.46 \| fine	56.763 \| fine	0.334 \| good	6.871 \| good	0.273 \| good
2025-09-06T22:00:00.000Z	75 \| moderate	22.176 \| fine	76.623 \| fine	60.319 \| fine	0.319 \| good	6.356 \| good	0.273 \| good
2025-09-06T23:00:00.000Z	77 \| moderate	22.553 \| fine	69.873 \| fine	61.922 \| fine	0.312 \| good	7.439 \| good	0.301 \| good
2025-09-06T23:00:00.000Z	80 \| moderate	22.75 \| fine	72.269 \| fine	64.378 \| fine	0.3 \| good	7.926 \| good	0.305 \| good
2025-09-06T23:00:00.000Z	67 \| moderate	17.681 \| fine	78.102 \| fine	58.423 \| fine	1.044 \| good	2.406 \| good	0.224 \| good
2025-09-07T00:00:00.000Z	71 \| moderate	20.296 \| fine	89.347 \| fine	56.458 \| fine	1.003 \| good	2.896 \| good	0.225 \| good
2025-09-07T01:00:00.000Z	81 \| moderate	25.124 \| fine	109.85 \| fine	48.222 \| good	1.007 \| good	6.85 \| good	0.262 \| good
2025-09-07T02:00:00.000Z	81 \| moderate	25.37 \| fine	110.356 \| fine	40.874 \| good	1.011 \| good	10.804 \| good	0.299 \| good
2025-09-07T03:00:00.000Z	77 \| moderate	22.852 \| fine	100.008 \| fine	38.051 \| good	1.014 \| good	14.758 \| good	0.335 \| good
2025-09-07T04:00:00.000Z	71 \| moderate	20.46 \| fine	89.738 \| fine	42.718 \| good	0.875 \| good	15.304 \| good	0.338 \| good
2025-09-07T05:00:00.000Z	67 \| moderate	17.947 \| fine	79.651 \| fine	43.991 \| good	0.736 \| good	15.851 \| good	0.341 \| good
2025-09-07T06:00:00.000Z	66 \| moderate	16.545 \| fine	73.476 \| fine	43.324 \| good	0.598 \| good	16.398 \| good	0.344 \| good
2025-09-07T07:00:00.000Z	62 \| moderate	14.833 \| fine	66.291 \| fine	37.569 \| good	0.499 \| good	13.31 \| good	0.304 \| good
2025-09-07T08:00:00.000Z	60 \| moderate	13.759 \| fine	61.926 \| fine	34.668 \| good	0.401 \| good	10.222 \| good	0.264 \| good
2025-09-07T09:00:00.000Z	58 \| moderate	13.162 \| fine	59.272 \| fine	33.187 \| good	0.303 \| good	7.135 \| good	0.224 \| good
2025-09-07T10:00:00.000Z	58 \| moderate	13.077 \| fine	59.104 \| fine	30.88 \| good	0.263 \| good	6.196 \| good	0.208 \| good
2025-09-07T11:00:00.000Z	64 \| moderate	15.605 \| fine	69.496 \| fine	28.411 \| good	0.224 \| good	5.258 \| good	0.193 \| good
2025-09-07T12:00:00.000Z	62 \| moderate	15.121 \| fine	67.519 \| fine	27.714 \| good	0.184 \| good	4.319 \| good	0.178 \| good
2025-09-07T13:00:00.000Z	62 \| moderate	15.196 \| fine	68.295 \| fine	29.497 \| good	0.209 \| good	4.368 \| good	0.183 \| good
2025-09-07T14:00:00.000Z	62 \| moderate	15.112 \| fine	68.238 \| fine	33.84 \| good	0.234 \| good	4.418 \| good	0.188 \| good
2025-09-07T15:00:00.000Z	58 \| moderate	12.679 \| fine	57.369 \| fine	38.992 \| good	0.258 \| good	4.468 \| good	0.194 \| good
2025-09-07T16:00:00.000Z	58 \| moderate	12.7 \| fine	57.096 \| fine	43.076 \| good	0.341 \| good	3.439 \| good	0.182 \| good
2025-09-07T17:00:00.000Z	60 \| moderate	13.685 \| fine	61.785 \| fine	49.135 \| good	0.424 \| good	2.41 \| good	0.171 \| good
2025-09-07T18:00:00.000Z	60 \| moderate	13.676 \| fine	61.808 \| fine	53.048 \| good	0.507 \| good	1.381 \| good	0.16 \| good
2025-09-07T19:00:00.000Z	60 \| moderate	13.957 \| fine	62.651 \| fine	54.31 \| good	0.514 \| good	1.555 \| good	0.159 \| good
2025-09-07T20:00:00.000Z	58 \| moderate	12.722 \| fine	56.734 \| fine	56.886 \| fine	0.521 \| good	1.729 \| good	0.158 \| good
2025-09-07T21:00:00.000Z	58 \| moderate	12.788 \| fine	57.737 \| fine	54.632 \| good	0.528 \| good	1.904 \| good	0.158 \| good
2025-09-07T22:00:00.000Z	54 \| moderate	10.618 \| good	47.151 \| good	55.85 \| fine	0.508 \| good	2.42 \| good	0.158 \| good
2025-09-07T23:00:00.000Z	61 \| moderate	11.899 \| good	53.017 \| good	58.042 \| fine	0.489 \| good	2.937 \| good	0.158 \| good
2025-09-08T00:00:00.000Z	60 \| moderate	13.926 \| fine	62.288 \| fine	57.35 \| fine	0.469 \| good	3.453 \| good	0.158 \| good
2025-09-08T01:00:00.000Z	66 \| moderate	16.968 \| fine	75.848 \| fine	49.017 \| good	0.439 \| good	5.537 \| good	0.173 \| good
2025-09-08T02:00:00.000Z	66 \| moderate	17.242 \| fine	76.24 \| fine	47.12 \| good	0.41 \| good	7.62 \| good	0.188 \| good
2025-09-08T03:00:00.000Z	62 \| moderate	14.853 \| fine	66.625 \| fine	45.629 \| good	0.38 \| good	9.703 \| good	0.203 \| good
2025-09-08T04:00:00.000Z	52 \| moderate	9.645 \| good	42.892 \| good	45.917 \| good	0.352 \| good	9.599 \| good	0.199 \| good
2025-09-08T05:00:00.000Z	49 \| good	8.666 \| good	38.144 \| good	44.201 \| good	0.324 \| good	9.495 \| good	0.195 \| good
2025-09-08T06:00:00.000Z	52 \| moderate	9.665 \| good	43.24 \| good	43.483 \| good	0.296 \| good	9.391 \| good	0.191 \| good
2025-09-08T07:00:00.000Z	52 \| moderate	9.653 \| good	42.986 \| good	45.045 \| good	0.26 \| good	8.369 \| good	0.178 \| good
2025-09-08T08:00:00.000Z	52 \| moderate	9.592 \| good	42.818 \| good	47.988 \| good	0.223 \| good	7.346 \| good	0.166 \| good
2025-09-08T09:00:00.000Z	52 \| moderate	9.784 \| good	43.393 \| good	43.14 \| good	0.187 \| good	6.324 \| good	0.153 \| good
2025-09-08T10:00:00.000Z	52 \| moderate	9.771 \| good	43.393 \| good	40.658 \| good	0.187 \| good	5.757 \| good	0.146 \| good
2025-09-08T11:00:00.000Z	52 \| moderate	10.453 \| good	46.375 \| good	40.613 \| good	0.188 \| good	5.189 \| good	0.139 \| good
2025-09-08T12:00:00.000Z	56 \| moderate	11.679 \| good	51.634 \| good	36.915 \| good	0.188 \| good	4.621 \| good	0.132 \| good
2025-09-08T13:00:00.000Z	56 \| moderate	11.786 \| good	52.688 \| good	38.181 \| good	0.217 \| good	4.497 \| good	0.139 \| good
2025-09-08T14:00:00.000Z	56 \| moderate	12.103 \| fine	53.716 \| good	41.438 \| good	0.246 \| good	4.372 \| good	0.145 \| good
2025-09-08T15:00:00.000Z	54 \| moderate	10.869 \| good	48.113 \| good	45.219 \| good	0.275 \| good	4.248 \| good	0.152 \| good
2025-09-08T16:00:00.000Z	54 \| moderate	10.976 \| good	48.542 \| good	47.845 \| good	0.317 \| good	3.055 \| good	0.134 \| good
2025-09-08T17:00:00.000Z	56 \| moderate	12.49 \| fine	56.125 \| fine	48.951 \| good	0.359 \| good	1.862 \| good	0.116 \| good
2025-09-08T18:00:00.000Z	58 \| moderate	13.098 \| fine	58.81 \| fine	52.832 \| good	0.401 \| good	0.669 \| good	0.098 \| good
2025-09-08T19:00:00.000Z	58 \| moderate	12.647 \| fine	56.8 \| fine	54.988 \| good	0.397 \| good	0.616 \| good	0.097 \| good
2025-09-08T20:00:00.000Z	61 \| moderate	12.389 \| fine	55.447 \| fine	57.726 \| fine	0.394 \| good	0.562 \| good	0.095 \| good
2025-09-08T21:00:00.000Z	58 \| moderate	12.023 \| good	53.632 \| good	57.496 \| fine	0.39 \| good	0.508 \| good	0.093 \| good
2025-09-08T22:00:00.000Z	56 \| moderate	11.665 \| good	52.529 \| good	55.908 \| fine	0.397 \| good	0.901 \| good	0.096 \| good

Louisville

Get reliable air quality data to drive your business

Louisville, Colorado air quality map: Track AQI near you

0.27ppm

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 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 06:00:00 on 2025-09-06.

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 2025-09-06.

What is the current air quality in Louisville, Colorado?

The current air quality in Louisville, Colorado is 75, categorized as Moderate based on real-time data.

What pollutant is the most common in Louisville, Colorado?

The most common pollutant in Louisville, Colorado is PM2.5.

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 22.082 μg/m³.

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

The current PM₁₀ concentration at Louisville, Colorado is 77.348 μg/m³.

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

The current carbon monoxide (CO) concentration at Louisville, Colorado is 0.275 ppm.

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

The current sulfur dioxide (SO₂) concentration at Louisville, Colorado is 0.321 ppb.

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

The current ozone (O₃) concentration at Louisville, Colorado is 62.235 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Louisville, Colorado is 6.965 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-09-05T00:00:00.000Z	75 \| moderate	22.258 \| fine	75.343 \| fine	60.566 \| fine	0.47 \| good	9.145 \| good	0.311 \| good
2025-09-05T01:00:00.000Z	90 \| moderate	30.007 \| fine	97.621 \| fine	57.897 \| fine	0.383 \| good	9.895 \| good	0.349 \| good
2025-09-05T02:00:00.000Z	99 \| moderate	35.29 \| fine	93.07 \| fine	59.739 \| fine	0.5 \| good	7.387 \| good	0.4 \| good
2025-09-05T03:00:00.000Z	132 \| sensitive	48.454 \| moderate	126.369 \| fine	56.061 \| fine	0.405 \| good	6.621 \| good	0.355 \| good
2025-09-05T04:00:00.000Z	132 \| sensitive	47.607 \| moderate	134.671 \| fine	51.649 \| good	0.413 \| good	9.253 \| good	0.278 \| good
2025-09-05T05:00:00.000Z	119 \| sensitive	42.669 \| moderate	109.607 \| fine	47.677 \| good	0.413 \| good	7.874 \| good	0.245 \| good
2025-09-05T06:00:00.000Z	107 \| sensitive	38.444 \| moderate	136.365 \| fine	44.782 \| good	0.407 \| good	4.216 \| good	0.245 \| good
2025-09-05T07:00:00.000Z	107 \| sensitive	38.162 \| moderate	121.57 \| fine	39.394 \| good	0.256 \| good	3.602 \| good	0.216 \| good
2025-09-05T08:00:00.000Z	96 \| moderate	33.088 \| fine	86.354 \| fine	36.257 \| good	0.295 \| good	4.015 \| good	0.216 \| good
2025-09-05T09:00:00.000Z	90 \| moderate	29.55 \| fine	87.778 \| fine	35.16 \| good	0.251 \| good	5.404 \| good	0.245 \| good
2025-09-05T10:00:00.000Z	86 \| moderate	28.188 \| fine	90.6 \| fine	32.632 \| good	0.298 \| good	5.703 \| good	0.2 \| good
2025-09-05T11:00:00.000Z	84 \| moderate	26.996 \| fine	99.074 \| fine	30.553 \| good	0.29 \| good	5.813 \| good	0.233 \| good
2025-09-05T12:00:00.000Z	82 \| moderate	26.46 \| fine	89.124 \| fine	30.156 \| good	0.286 \| good	7.342 \| good	0.233 \| good
2025-09-05T13:00:00.000Z	79 \| moderate	24.245 \| fine	85.794 \| fine	30.255 \| good	0.258 \| good	7.074 \| good	0.233 \| good
2025-09-05T14:00:00.000Z	77 \| moderate	22.836 \| fine	70.268 \| fine	32.839 \| good	0.19 \| good	6.58 \| good	0.2 \| good
2025-09-05T15:00:00.000Z	79 \| moderate	24.123 \| fine	70.953 \| fine	35.085 \| good	0.175 \| good	6.454 \| good	0.245 \| good
2025-09-05T16:00:00.000Z	75 \| moderate	22.166 \| fine	74.763 \| fine	34.974 \| good	0.315 \| good	6.117 \| good	0.278 \| good
2025-09-05T17:00:00.000Z	77 \| moderate	22.524 \| fine	78.362 \| fine	36.791 \| good	0.254 \| good	5.286 \| good	0.228 \| good
2025-09-05T18:00:00.000Z	75 \| moderate	21.677 \| fine	61.998 \| fine	37.989 \| good	0.247 \| good	5.578 \| good	0.245 \| good
2025-09-05T19:00:00.000Z	75 \| moderate	22.1 \| fine	69.834 \| fine	39.903 \| good	0.408 \| good	6.156 \| good	0.228 \| good
2025-09-05T20:00:00.000Z	73 \| moderate	21.253 \| fine	66.932 \| fine	39.751 \| good	0.371 \| good	8.003 \| good	0.306 \| good
2025-09-05T21:00:00.000Z	73 \| moderate	21.049 \| fine	67.919 \| fine	41.043 \| good	0.316 \| good	7.358 \| good	0.323 \| good
2025-09-05T22:00:00.000Z	75 \| moderate	22.294 \| fine	76.694 \| fine	42.138 \| good	0.343 \| good	6.938 \| good	0.228 \| good
2025-09-05T23:00:00.000Z	75 \| moderate	22.171 \| fine	72.642 \| fine	42.981 \| good	0.305 \| good	7.512 \| good	0.245 \| good
2025-09-06T00:00:00.000Z	75 \| moderate	21.596 \| fine	65.177 \| fine	41.633 \| good	0.341 \| good	9.274 \| good	0.273 \| good
2025-09-06T01:00:00.000Z	75 \| moderate	21.583 \| fine	71.045 \| fine	40.797 \| good	0.343 \| good	10.723 \| good	0.33 \| good
2025-09-06T02:00:00.000Z	71 \| moderate	20.462 \| fine	77.094 \| fine	38.38 \| good	0.284 \| good	11.191 \| good	0.358 \| good
2025-09-06T03:00:00.000Z	71 \| moderate	20.038 \| fine	70.999 \| fine	36.295 \| good	0.228 \| good	13.413 \| good	0.408 \| good
2025-09-06T04:00:00.000Z	73 \| moderate	21.054 \| fine	68.937 \| fine	35.945 \| good	0.338 \| good	12.072 \| good	0.351 \| good
2025-09-06T05:00:00.000Z	75 \| moderate	21.564 \| fine	71.403 \| fine	33.465 \| good	0.317 \| good	12.406 \| good	0.457 \| good
2025-09-06T06:00:00.000Z	75 \| moderate	22.127 \| fine	74.521 \| fine	29.791 \| good	0.244 \| good	17.417 \| good	0.469 \| good
2025-09-06T07:00:00.000Z	75 \| moderate	22.462 \| fine	79.549 \| fine	29.118 \| good	0.341 \| good	16.774 \| good	0.469 \| good
2025-09-06T08:00:00.000Z	75 \| moderate	21.754 \| fine	73.311 \| fine	25.74 \| good	0.38 \| good	18.693 \| good	0.392 \| good
2025-09-06T09:00:00.000Z	77 \| moderate	23.07 \| fine	65.656 \| fine	26.739 \| good	0.276 \| good	14.231 \| good	0.363 \| good
2025-09-06T10:00:00.000Z	77 \| moderate	22.861 \| fine	65.899 \| fine	25.46 \| good	0.246 \| good	9.89 \| good	0.323 \| good
2025-09-06T11:00:00.000Z	77 \| moderate	22.705 \| fine	60.527 \| fine	23.845 \| good	0.263 \| good	10.292 \| good	0.262 \| good
2025-09-06T12:00:00.000Z	77 \| moderate	22.692 \| fine	69.007 \| fine	23.92 \| good	0.38 \| good	8.723 \| good	0.261 \| good
2025-09-06T13:00:00.000Z	77 \| moderate	23.426 \| fine	84.764 \| fine	24.317 \| good	0.48 \| good	10.081 \| good	0.35 \| good
2025-09-06T14:00:00.000Z	79 \| moderate	23.942 \| fine	70.027 \| fine	23.717 \| good	0.783 \| good	10.742 \| good	0.35 \| good
2025-09-06T15:00:00.000Z	77 \| moderate	23.156 \| fine	73.505 \| fine	25.949 \| good	1.007 \| good	11.62 \| good	0.321 \| good
2025-09-06T16:00:00.000Z	79 \| moderate	23.685 \| fine	64.855 \| fine	29.153 \| good	1.378 \| good	11.6 \| good	0.306 \| good
2025-09-06T17:00:00.000Z	79 \| moderate	23.548 \| fine	66.743 \| fine	31.66 \| good	0.729 \| good	9.31 \| good	0.261 \| good
2025-09-06T18:00:00.000Z	79 \| moderate	23.531 \| fine	68.308 \| fine	36.422 \| good	0.4 \| good	6.409 \| good	0.278 \| good
2025-09-06T19:00:00.000Z	77 \| moderate	22.913 \| fine	66.833 \| fine	42.706 \| good	0.401 \| good	5.649 \| good	0.278 \| good
2025-09-06T20:00:00.000Z	77 \| moderate	22.882 \| fine	68.476 \| fine	49.811 \| good	0.334 \| good	5.131 \| good	0.245 \| good
2025-09-06T21:00:00.000Z	77 \| moderate	22.643 \| fine	75.46 \| fine	56.763 \| fine	0.334 \| good	6.871 \| good	0.273 \| good
2025-09-06T22:00:00.000Z	75 \| moderate	22.176 \| fine	76.623 \| fine	60.319 \| fine	0.319 \| good	6.356 \| good	0.273 \| good
2025-09-06T23:00:00.000Z	77 \| moderate	22.553 \| fine	69.873 \| fine	61.922 \| fine	0.312 \| good	7.439 \| good	0.301 \| good
2025-09-06T23:00:00.000Z	80 \| moderate	22.75 \| fine	72.269 \| fine	64.378 \| fine	0.3 \| good	7.926 \| good	0.305 \| good
2025-09-06T23:00:00.000Z	67 \| moderate	17.681 \| fine	78.102 \| fine	58.423 \| fine	1.044 \| good	2.406 \| good	0.224 \| good
2025-09-07T00:00:00.000Z	71 \| moderate	20.296 \| fine	89.347 \| fine	56.458 \| fine	1.003 \| good	2.896 \| good	0.225 \| good
2025-09-07T01:00:00.000Z	81 \| moderate	25.124 \| fine	109.85 \| fine	48.222 \| good	1.007 \| good	6.85 \| good	0.262 \| good
2025-09-07T02:00:00.000Z	81 \| moderate	25.37 \| fine	110.356 \| fine	40.874 \| good	1.011 \| good	10.804 \| good	0.299 \| good
2025-09-07T03:00:00.000Z	77 \| moderate	22.852 \| fine	100.008 \| fine	38.051 \| good	1.014 \| good	14.758 \| good	0.335 \| good
2025-09-07T04:00:00.000Z	71 \| moderate	20.46 \| fine	89.738 \| fine	42.718 \| good	0.875 \| good	15.304 \| good	0.338 \| good
2025-09-07T05:00:00.000Z	67 \| moderate	17.947 \| fine	79.651 \| fine	43.991 \| good	0.736 \| good	15.851 \| good	0.341 \| good
2025-09-07T06:00:00.000Z	66 \| moderate	16.545 \| fine	73.476 \| fine	43.324 \| good	0.598 \| good	16.398 \| good	0.344 \| good
2025-09-07T07:00:00.000Z	62 \| moderate	14.833 \| fine	66.291 \| fine	37.569 \| good	0.499 \| good	13.31 \| good	0.304 \| good
2025-09-07T08:00:00.000Z	60 \| moderate	13.759 \| fine	61.926 \| fine	34.668 \| good	0.401 \| good	10.222 \| good	0.264 \| good
2025-09-07T09:00:00.000Z	58 \| moderate	13.162 \| fine	59.272 \| fine	33.187 \| good	0.303 \| good	7.135 \| good	0.224 \| good
2025-09-07T10:00:00.000Z	58 \| moderate	13.077 \| fine	59.104 \| fine	30.88 \| good	0.263 \| good	6.196 \| good	0.208 \| good
2025-09-07T11:00:00.000Z	64 \| moderate	15.605 \| fine	69.496 \| fine	28.411 \| good	0.224 \| good	5.258 \| good	0.193 \| good
2025-09-07T12:00:00.000Z	62 \| moderate	15.121 \| fine	67.519 \| fine	27.714 \| good	0.184 \| good	4.319 \| good	0.178 \| good
2025-09-07T13:00:00.000Z	62 \| moderate	15.196 \| fine	68.295 \| fine	29.497 \| good	0.209 \| good	4.368 \| good	0.183 \| good
2025-09-07T14:00:00.000Z	62 \| moderate	15.112 \| fine	68.238 \| fine	33.84 \| good	0.234 \| good	4.418 \| good	0.188 \| good
2025-09-07T15:00:00.000Z	58 \| moderate	12.679 \| fine	57.369 \| fine	38.992 \| good	0.258 \| good	4.468 \| good	0.194 \| good
2025-09-07T16:00:00.000Z	58 \| moderate	12.7 \| fine	57.096 \| fine	43.076 \| good	0.341 \| good	3.439 \| good	0.182 \| good
2025-09-07T17:00:00.000Z	60 \| moderate	13.685 \| fine	61.785 \| fine	49.135 \| good	0.424 \| good	2.41 \| good	0.171 \| good
2025-09-07T18:00:00.000Z	60 \| moderate	13.676 \| fine	61.808 \| fine	53.048 \| good	0.507 \| good	1.381 \| good	0.16 \| good
2025-09-07T19:00:00.000Z	60 \| moderate	13.957 \| fine	62.651 \| fine	54.31 \| good	0.514 \| good	1.555 \| good	0.159 \| good
2025-09-07T20:00:00.000Z	58 \| moderate	12.722 \| fine	56.734 \| fine	56.886 \| fine	0.521 \| good	1.729 \| good	0.158 \| good
2025-09-07T21:00:00.000Z	58 \| moderate	12.788 \| fine	57.737 \| fine	54.632 \| good	0.528 \| good	1.904 \| good	0.158 \| good
2025-09-07T22:00:00.000Z	54 \| moderate	10.618 \| good	47.151 \| good	55.85 \| fine	0.508 \| good	2.42 \| good	0.158 \| good
2025-09-07T23:00:00.000Z	61 \| moderate	11.899 \| good	53.017 \| good	58.042 \| fine	0.489 \| good	2.937 \| good	0.158 \| good
2025-09-08T00:00:00.000Z	60 \| moderate	13.926 \| fine	62.288 \| fine	57.35 \| fine	0.469 \| good	3.453 \| good	0.158 \| good
2025-09-08T01:00:00.000Z	66 \| moderate	16.968 \| fine	75.848 \| fine	49.017 \| good	0.439 \| good	5.537 \| good	0.173 \| good
2025-09-08T02:00:00.000Z	66 \| moderate	17.242 \| fine	76.24 \| fine	47.12 \| good	0.41 \| good	7.62 \| good	0.188 \| good
2025-09-08T03:00:00.000Z	62 \| moderate	14.853 \| fine	66.625 \| fine	45.629 \| good	0.38 \| good	9.703 \| good	0.203 \| good
2025-09-08T04:00:00.000Z	52 \| moderate	9.645 \| good	42.892 \| good	45.917 \| good	0.352 \| good	9.599 \| good	0.199 \| good
2025-09-08T05:00:00.000Z	49 \| good	8.666 \| good	38.144 \| good	44.201 \| good	0.324 \| good	9.495 \| good	0.195 \| good
2025-09-08T06:00:00.000Z	52 \| moderate	9.665 \| good	43.24 \| good	43.483 \| good	0.296 \| good	9.391 \| good	0.191 \| good
2025-09-08T07:00:00.000Z	52 \| moderate	9.653 \| good	42.986 \| good	45.045 \| good	0.26 \| good	8.369 \| good	0.178 \| good
2025-09-08T08:00:00.000Z	52 \| moderate	9.592 \| good	42.818 \| good	47.988 \| good	0.223 \| good	7.346 \| good	0.166 \| good
2025-09-08T09:00:00.000Z	52 \| moderate	9.784 \| good	43.393 \| good	43.14 \| good	0.187 \| good	6.324 \| good	0.153 \| good
2025-09-08T10:00:00.000Z	52 \| moderate	9.771 \| good	43.393 \| good	40.658 \| good	0.187 \| good	5.757 \| good	0.146 \| good
2025-09-08T11:00:00.000Z	52 \| moderate	10.453 \| good	46.375 \| good	40.613 \| good	0.188 \| good	5.189 \| good	0.139 \| good
2025-09-08T12:00:00.000Z	56 \| moderate	11.679 \| good	51.634 \| good	36.915 \| good	0.188 \| good	4.621 \| good	0.132 \| good
2025-09-08T13:00:00.000Z	56 \| moderate	11.786 \| good	52.688 \| good	38.181 \| good	0.217 \| good	4.497 \| good	0.139 \| good
2025-09-08T14:00:00.000Z	56 \| moderate	12.103 \| fine	53.716 \| good	41.438 \| good	0.246 \| good	4.372 \| good	0.145 \| good
2025-09-08T15:00:00.000Z	54 \| moderate	10.869 \| good	48.113 \| good	45.219 \| good	0.275 \| good	4.248 \| good	0.152 \| good
2025-09-08T16:00:00.000Z	54 \| moderate	10.976 \| good	48.542 \| good	47.845 \| good	0.317 \| good	3.055 \| good	0.134 \| good
2025-09-08T17:00:00.000Z	56 \| moderate	12.49 \| fine	56.125 \| fine	48.951 \| good	0.359 \| good	1.862 \| good	0.116 \| good
2025-09-08T18:00:00.000Z	58 \| moderate	13.098 \| fine	58.81 \| fine	52.832 \| good	0.401 \| good	0.669 \| good	0.098 \| good
2025-09-08T19:00:00.000Z	58 \| moderate	12.647 \| fine	56.8 \| fine	54.988 \| good	0.397 \| good	0.616 \| good	0.097 \| good
2025-09-08T20:00:00.000Z	61 \| moderate	12.389 \| fine	55.447 \| fine	57.726 \| fine	0.394 \| good	0.562 \| good	0.095 \| good
2025-09-08T21:00:00.000Z	58 \| moderate	12.023 \| good	53.632 \| good	57.496 \| fine	0.39 \| good	0.508 \| good	0.093 \| good
2025-09-08T22:00:00.000Z	56 \| moderate	11.665 \| good	52.529 \| good	55.908 \| fine	0.397 \| good	0.901 \| good	0.096 \| 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

Gunbarrel, Colorado

Erie, Colorado

Boulder, Colorado

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Frequently asked questions

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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?