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

The current PM10 concentration at Louisville, Colorado is 10.985 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Louisville, Colorado is 0.671 ppb.

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

The current ozone (O3) concentration at Louisville, Colorado is 38.631 ppm.

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

The current nitrogen dioxide (NO2) concentration at Louisville, Colorado is 12.688 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 2.62 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)

3.32 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

12.62 μg/m³

155

255

425

605+

Ozone (O₃)

35.45 ppb

201

201+

Sulfur Dioxide (SO₂)

0.32 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

9.81 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.25 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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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
2026-03-02T05:00:00.000Z	31 \| good	3.962 \| good	17.165 \| good	34.31 \| good	0.347 \| good	18.181 \| good	0.308 \| good
2026-03-02T06:00:00.000Z	31 \| good	3.84 \| good	14.661 \| good	32.65 \| good	0.604 \| good	25.429 \| good	0.445 \| good
2026-03-02T07:00:00.000Z	30 \| good	3.798 \| good	13.309 \| good	31.747 \| good	0.646 \| good	26.877 \| good	0.345 \| good
2026-03-02T08:00:00.000Z	28 \| good	4.132 \| good	15.251 \| good	30.367 \| good	0.524 \| good	14.113 \| good	0.293 \| good
2026-03-02T09:00:00.000Z	28 \| good	4.077 \| good	15.373 \| good	30.147 \| good	0.449 \| good	8.165 \| good	0.259 \| good
2026-03-02T10:00:00.000Z	28 \| good	3.494 \| good	11.539 \| good	29.737 \| good	0.517 \| good	7.885 \| good	0.222 \| good
2026-03-02T11:00:00.000Z	27 \| good	3.625 \| good	11.317 \| good	29.472 \| good	0.637 \| good	9.914 \| good	0.214 \| good
2026-03-02T12:00:00.000Z	27 \| good	3.396 \| good	9.555 \| good	29.052 \| good	0.582 \| good	12.983 \| good	0.277 \| good
2026-03-02T13:00:00.000Z	29 \| good	2.957 \| good	10.755 \| good	30.656 \| good	0.678 \| good	17.408 \| good	0.315 \| good
2026-03-02T14:00:00.000Z	28 \| good	2.962 \| good	12.279 \| good	30.317 \| good	1.39 \| good	20.147 \| good	0.573 \| good
2026-03-02T15:00:00.000Z	26 \| good	3.353 \| good	14.075 \| good	28.478 \| good	2.034 \| good	17.164 \| good	0.737 \| good
2026-03-02T16:00:00.000Z	29 \| good	4.547 \| good	25.282 \| good	31.426 \| good	1.548 \| good	18.636 \| good	0.537 \| good
2026-03-02T17:00:00.000Z	29 \| good	4.812 \| good	21.602 \| good	31.239 \| good	1.336 \| good	19.363 \| good	0.326 \| good
2026-03-02T18:00:00.000Z	33 \| good	6.097 \| good	27.44 \| good	31.944 \| good	1.034 \| good	22.382 \| good	0.326 \| good
2026-03-02T19:00:00.000Z	37 \| good	4.949 \| good	39.986 \| good	33.42 \| good	1.206 \| good	23.158 \| good	0.296 \| good
2026-03-02T20:00:00.000Z	43 \| good	7.053 \| good	45.664 \| good	36.157 \| good	0.869 \| good	10.144 \| good	0.166 \| good
2026-03-02T21:00:00.000Z	35 \| good	5.34 \| good	35.25 \| good	38.495 \| good	0.524 \| good	5.952 \| good	0.16 \| good
2026-03-02T22:00:00.000Z	38 \| good	6.227 \| good	34.12 \| good	40.787 \| good	0.791 \| good	7.294 \| good	0.193 \| good
2026-03-02T23:00:00.000Z	39 \| good	5.554 \| good	31.556 \| good	42.494 \| good	0.546 \| good	6.241 \| good	0.145 \| good
2026-03-03T00:00:00.000Z	41 \| good	5.324 \| good	29.314 \| good	44.415 \| good	0.514 \| good	7.087 \| good	0.145 \| good
2026-03-03T01:00:00.000Z	41 \| good	4.757 \| good	24.449 \| good	44.099 \| good	0.569 \| good	11.572 \| good	0.193 \| good
2026-03-03T02:00:00.000Z	41 \| good	4.821 \| good	29.343 \| good	43.555 \| good	0.697 \| good	13.646 \| good	0.226 \| good
2026-03-03T03:00:00.000Z	39 \| good	5.617 \| good	36.542 \| good	41.588 \| good	0.918 \| good	25.092 \| good	0.315 \| good
2026-03-03T04:00:00.000Z	35 \| good	5.257 \| good	35.496 \| good	37.982 \| good	0.666 \| good	17.547 \| good	0.238 \| good
2026-03-03T05:00:00.000Z	33 \| good	4.929 \| good	24.958 \| good	36.379 \| good	0.622 \| good	14.619 \| good	0.268 \| good
2026-03-03T06:00:00.000Z	32 \| good	4.057 \| good	20.076 \| good	35.426 \| good	0.332 \| good	13.132 \| good	0.252 \| good
2026-03-03T07:00:00.000Z	31 \| good	3.775 \| good	17.139 \| good	33.832 \| good	0.446 \| good	11.033 \| good	0.222 \| good
2026-03-03T08:00:00.000Z	30 \| good	3.961 \| good	17.995 \| good	32.431 \| good	0.501 \| good	8.956 \| good	0.159 \| good
2026-03-03T09:00:00.000Z	29 \| good	4.021 \| good	16.133 \| good	30.65 \| good	0.476 \| good	7.372 \| good	0.13 \| good
2026-03-03T10:00:00.000Z	29 \| good	4.543 \| good	18.177 \| good	31.296 \| good	0.501 \| good	4.797 \| good	0.13 \| good
2026-03-03T11:00:00.000Z	31 \| good	4.216 \| good	14.401 \| good	32.621 \| good	0.423 \| good	4.837 \| good	0.163 \| good
2026-03-03T12:00:00.000Z	30 \| good	3.488 \| good	12.924 \| good	31.665 \| good	0.524 \| good	5.77 \| good	0.27 \| good
2026-03-03T13:00:00.000Z	30 \| good	3.241 \| good	12.21 \| good	31.544 \| good	0.492 \| good	6.003 \| good	0.315 \| good
2026-03-03T14:00:00.000Z	28 \| good	3.311 \| good	10.016 \| good	30.445 \| good	0.572 \| good	7.1 \| good	0.407 \| good
2026-03-03T15:00:00.000Z	27 \| good	4.828 \| good	23.082 \| good	29.227 \| good	0.7 \| good	13.97 \| good	0.484 \| good
2026-03-03T16:00:00.000Z	31 \| good	5.191 \| good	34.456 \| good	29.331 \| good	0.814 \| good	12.136 \| good	0.381 \| good
2026-03-03T17:00:00.000Z	33 \| good	5.543 \| good	24.853 \| good	32.89 \| good	0.623 \| good	8.282 \| good	0.33 \| good
2026-03-03T18:00:00.000Z	31 \| good	3.469 \| good	12.242 \| good	32.744 \| good	0.324 \| good	13.609 \| good	0.241 \| good
2026-03-03T19:00:00.000Z	33 \| good	3.823 \| good	16.089 \| good	35.526 \| good	0.464 \| good	9.928 \| good	0.163 \| good
2026-03-03T20:00:00.000Z	38 \| good	3.361 \| good	11.169 \| good	40.82 \| good	0.504 \| good	9.509 \| good	0.256 \| good
2026-03-03T21:00:00.000Z	40 \| good	3.242 \| good	15.795 \| good	42.863 \| good	0.581 \| good	14.439 \| good	0.238 \| good
2026-03-03T22:00:00.000Z	43 \| good	2.664 \| good	6.343 \| good	45.542 \| good	0.566 \| good	16.067 \| good	0.282 \| good
2026-03-03T23:00:00.000Z	43 \| good	3.486 \| good	13.66 \| good	45.823 \| good	0.587 \| good	11.943 \| good	0.222 \| good
2026-03-04T00:00:00.000Z	43 \| good	3.004 \| good	9.51 \| good	45.835 \| good	0.635 \| good	9.014 \| good	0.193 \| good
2026-03-04T01:00:00.000Z	40 \| good	3.927 \| good	10.369 \| good	43.443 \| good	0.476 \| good	8.69 \| good	0.186 \| good
2026-03-04T02:00:00.000Z	41 \| good	3.247 \| good	11.115 \| good	43.671 \| good	0.452 \| good	9.605 \| good	0.225 \| good
2026-03-04T03:00:00.000Z	36 \| good	2.62 \| good	10.985 \| good	38.631 \| good	0.671 \| good	12.688 \| good	0.212 \| good
2026-03-04T04:00:00.000Z	32 \| good	3.32 \| good	12.62 \| good	35.454 \| good	0.32 \| good	9.809 \| good	0.25 \| good
2026-03-04T05:00:00.000Z	41 \| good	2.248 \| good	9.368 \| good	44.024 \| good	0.702 \| good	14.274 \| good	0.222 \| good
2026-03-04T06:00:00.000Z	38 \| good	1.965 \| good	7.808 \| good	41.139 \| good	0.71 \| good	16.117 \| good	0.238 \| good
2026-03-04T07:00:00.000Z	34 \| good	1.034 \| good	4.177 \| good	36.906 \| good	0.582 \| good	13.826 \| good	0.221 \| good
2026-03-04T08:00:00.000Z	32 \| good	1.181 \| good	4.982 \| good	35.261 \| good	0.453 \| good	11.536 \| good	0.204 \| good
2026-03-04T09:00:00.000Z	32 \| good	1.532 \| good	6.043 \| good	34.821 \| good	0.324 \| good	9.245 \| good	0.187 \| good
2026-03-04T10:00:00.000Z	31 \| good	1.666 \| good	6.806 \| good	34.115 \| good	0.322 \| good	7.999 \| good	0.174 \| good
2026-03-04T11:00:00.000Z	33 \| good	1.496 \| good	5.846 \| good	35.623 \| good	0.321 \| good	6.754 \| good	0.161 \| good
2026-03-04T12:00:00.000Z	34 \| good	1.55 \| good	6.279 \| good	36.921 \| good	0.319 \| good	5.508 \| good	0.148 \| good
2026-03-04T13:00:00.000Z	32 \| good	1.349 \| good	5.516 \| good	34.814 \| good	0.35 \| good	5.557 \| good	0.156 \| good
2026-03-04T14:00:00.000Z	32 \| good	2.433 \| good	9.99 \| good	35.343 \| good	0.381 \| good	5.606 \| good	0.164 \| good
2026-03-04T15:00:00.000Z	35 \| good	2.662 \| good	10.971 \| good	38.473 \| good	0.412 \| good	5.655 \| good	0.172 \| good
2026-03-04T16:00:00.000Z	38 \| good	2.483 \| good	10.059 \| good	40.693 \| good	0.479 \| good	4.474 \| good	0.154 \| good
2026-03-04T17:00:00.000Z	40 \| good	2.07 \| good	8.348 \| good	43.203 \| good	0.545 \| good	3.293 \| good	0.137 \| good
2026-03-04T18:00:00.000Z	41 \| good	1.859 \| good	7.789 \| good	44.358 \| good	0.612 \| good	2.112 \| good	0.119 \| good
2026-03-04T19:00:00.000Z	44 \| good	1.817 \| good	7.299 \| good	46.735 \| good	0.614 \| good	1.986 \| good	0.117 \| good
2026-03-04T20:00:00.000Z	44 \| good	2.093 \| good	8.654 \| good	47.948 \| good	0.615 \| good	1.861 \| good	0.115 \| good
2026-03-04T21:00:00.000Z	44 \| good	2.286 \| good	9.419 \| good	47.678 \| good	0.617 \| good	1.735 \| good	0.112 \| good
2026-03-04T22:00:00.000Z	44 \| good	2.615 \| good	10.772 \| good	47.681 \| good	0.642 \| good	2.236 \| good	0.115 \| good
2026-03-04T23:00:00.000Z	44 \| good	2.922 \| good	12.401 \| good	47.782 \| good	0.667 \| good	2.736 \| good	0.117 \| good
2026-03-05T00:00:00.000Z	40 \| good	4.792 \| good	20.88 \| good	43.217 \| good	0.693 \| good	3.237 \| good	0.12 \| good
2026-03-05T01:00:00.000Z	35 \| good	6.338 \| good	27.942 \| good	37.806 \| good	0.8 \| good	6.778 \| good	0.148 \| good
2026-03-05T02:00:00.000Z	37 \| good	3.65 \| good	15.995 \| good	40.34 \| good	0.907 \| good	10.318 \| good	0.176 \| good
2026-03-05T03:00:00.000Z	37 \| good	1.954 \| good	8.171 \| good	39.968 \| good	1.015 \| good	13.859 \| good	0.205 \| good
2026-03-05T04:00:00.000Z	38 \| good	1.264 \| good	5.322 \| good	40.965 \| good	0.895 \| good	15.094 \| good	0.219 \| good
2026-03-05T05:00:00.000Z	40 \| good	1.251 \| good	4.975 \| good	43.206 \| good	0.776 \| good	16.329 \| good	0.234 \| good
2026-03-05T06:00:00.000Z	40 \| good	1.16 \| good	4.502 \| good	42.734 \| good	0.656 \| good	17.563 \| good	0.249 \| good
2026-03-05T07:00:00.000Z	37 \| good	1.243 \| good	5.074 \| good	40.348 \| good	0.562 \| good	14.244 \| good	0.224 \| good
2026-03-05T08:00:00.000Z	35 \| good	1.703 \| good	7.026 \| good	38.02 \| good	0.467 \| good	10.925 \| good	0.199 \| good
2026-03-05T09:00:00.000Z	34 \| good	2.163 \| good	8.905 \| good	37.286 \| good	0.373 \| good	7.606 \| good	0.174 \| good
2026-03-05T10:00:00.000Z	34 \| good	2.17 \| good	8.647 \| good	37.302 \| good	0.33 \| good	6.74 \| good	0.161 \| good
2026-03-05T11:00:00.000Z	34 \| good	1.623 \| good	6.521 \| good	37.07 \| good	0.287 \| good	5.873 \| good	0.149 \| good
2026-03-05T12:00:00.000Z	35 \| good	1.431 \| good	5.824 \| good	37.909 \| good	0.244 \| good	5.006 \| good	0.136 \| good
2026-03-05T13:00:00.000Z	32 \| good	2.364 \| good	9.786 \| good	34.672 \| good	0.31 \| good	6.219 \| good	0.154 \| good
2026-03-05T14:00:00.000Z	31 \| good	4.654 \| good	20.381 \| good	33.952 \| good	0.376 \| good	7.431 \| good	0.172 \| good
2026-03-05T15:00:00.000Z	31 \| good	5.364 \| good	23.133 \| good	33.473 \| good	0.443 \| good	8.643 \| good	0.19 \| good
2026-03-05T16:00:00.000Z	34 \| good	4.579 \| good	20.091 \| good	37.116 \| good	0.546 \| good	6.832 \| good	0.168 \| good
2026-03-05T17:00:00.000Z	38 \| good	4.091 \| good	17.961 \| good	40.888 \| good	0.65 \| good	5.02 \| good	0.146 \| good
2026-03-05T18:00:00.000Z	41 \| good	3.604 \| good	15.472 \| good	43.589 \| good	0.753 \| good	3.209 \| good	0.124 \| good
2026-03-05T19:00:00.000Z	45 \| good	2.699 \| good	10.815 \| good	49.135 \| good	0.688 \| good	2.773 \| good	0.122 \| good
2026-03-05T20:00:00.000Z	49 \| good	1.964 \| good	8.207 \| good	53.404 \| good	0.622 \| good	2.337 \| good	0.12 \| good
2026-03-05T21:00:00.000Z	48 \| good	1.86 \| good	7.74 \| good	51.99 \| good	0.556 \| good	1.902 \| good	0.118 \| good
2026-03-05T22:00:00.000Z	46 \| good	2.324 \| good	9.654 \| good	50.116 \| good	0.511 \| good	2.2 \| good	0.12 \| good
2026-03-05T23:00:00.000Z	44 \| good	2.668 \| good	10.905 \| good	48.276 \| good	0.466 \| good	2.499 \| good	0.123 \| good
2026-03-06T00:00:00.000Z	51 \| moderate	2.909 \| good	4.574 \| good	55.203 \| fine	0.423 \| good	2.832 \| good	0.126 \| good
2026-03-06T01:00:00.000Z	43 \| good	3.866 \| good	16.81 \| good	46.499 \| good	0.493 \| good	5.421 \| good	0.15 \| good
2026-03-06T02:00:00.000Z	43 \| good	4.502 \| good	19.609 \| good	46.467 \| good	0.565 \| good	8.045 \| good	0.173 \| good
2026-03-06T03:00:00.000Z	40 \| good	3.771 \| good	16.225 \| good	43.095 \| good	0.637 \| good	10.668 \| good	0.197 \| good
2026-03-06T04:00:00.000Z	38 \| good	3.203 \| good	13.584 \| good	41.244 \| good	0.587 \| good	8.956 \| good	0.186 \| good

Louisville

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Louisville, Colorado air quality map: Track AQI near you

0.21ppm

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 12:00:00 on 2026-03-04.

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 2026-03-03.

What is the current air quality in Louisville, Colorado?

The current air quality in Louisville, Colorado is 36, 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 2.62 μg/m³.

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

The current PM₁₀ concentration at Louisville, Colorado is 10.985 μg/m³.

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

The current carbon monoxide (CO) concentration at Louisville, Colorado is 0.212 ppm.

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

The current sulfur dioxide (SO₂) concentration at Louisville, Colorado is 0.671 ppb.

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

The current ozone (O₃) concentration at Louisville, Colorado is 38.631 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Louisville, Colorado is 12.688 ppb.

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