What is the current level of PM10 in Littleton, Colorado?

Littleton, Colorado currently has a PM10 concentration of 16.436 μg/m3.

What is the current level of sulfur dioxide (SO2) in Littleton, Colorado?

The current sulfur dioxide (SO2) concentration in Littleton, Colorado is 1.088 ppb.

What is the current level of ozone (O3) in Littleton, Colorado?

Littleton, Colorado currently has an ozone (O3) concentration of 26.295 ppm.

What is the current level of nitrogen dioxide (NO2) in Littleton, Colorado?

The current level of nitrogen dioxide (NO2) in Littleton, Colorado is 24.025 ppb.

Current air quality index in Littleton, Colorado today

Q: What is the PM2.5 concentration in Littleton, Colorado right now?

Littleton, Colorado currently has a PM2.5 concentration of 3.809 μg/m3.

Stay updated with real-time air quality in Littleton, 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

Littleton, Colorado

Last updated: ... (Local time)

Common air pollutants in Littleton, Colorado

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

3.81 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

16.44 μg/m³

155

255

425

605+

Ozone (O₃)

26.30 ppb

201

201+

Sulfur Dioxide (SO₂)

1.09 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

24.02 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.40 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

Littleton, Colorado

Get Live Pollen Counts

Littleton, Colorado

Scroll To Air Quality Map

Track live Littleton, Colorado air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-20T22:00:00.000Z	43 \| good	6.831 \| good	23.014 \| good	46.073 \| good	1.07 \| good	10.46 \| good	0.225 \| good
2026-10-20T23:00:00.000Z	43 \| good	5.554 \| good	24.466 \| good	45.594 \| good	0.929 \| good	10.901 \| good	0.236 \| good
2026-10-21T00:00:00.000Z	39 \| good	4.794 \| good	19.437 \| good	42.02 \| good	0.87 \| good	11.338 \| good	0.195 \| good
2026-10-21T01:00:00.000Z	32 \| good	4.234 \| good	18.318 \| good	34.595 \| good	0.787 \| good	28.738 \| good	0.538 \| good
2026-10-21T02:00:00.000Z	42 \| good	4.093 \| good	18.731 \| good	34.017 \| good	1.03 \| good	44.409 \| good	0.821 \| good
2026-10-21T03:00:00.000Z	33 \| good	2.188 \| good	8.781 \| good	35.756 \| good	0.524 \| good	24.508 \| good	0.227 \| good
2026-10-21T04:00:00.000Z	31 \| good	4.556 \| good	17.415 \| good	30.472 \| good	0.989 \| good	33.027 \| good	0.667 \| good
2026-10-21T05:00:00.000Z	30 \| good	4.153 \| good	17.284 \| good	32.233 \| good	0.847 \| good	32.432 \| good	0.493 \| good
2026-10-21T06:00:00.000Z	28 \| good	3.893 \| good	17.088 \| good	29.819 \| good	1.122 \| good	26.546 \| good	0.53 \| good
2026-10-21T07:00:00.000Z	30 \| good	3.75 \| good	15.865 \| good	31.666 \| good	1.285 \| good	19.913 \| good	0.356 \| good
2026-10-21T08:00:00.000Z	26 \| good	3.635 \| good	15.144 \| good	27.888 \| good	1.013 \| good	16.498 \| good	0.319 \| good
2026-10-21T09:00:00.000Z	29 \| good	3.929 \| good	16.792 \| good	30.5 \| good	0.935 \| good	16.273 \| good	0.281 \| good
2026-10-21T10:00:00.000Z	28 \| good	5.306 \| good	21.997 \| good	29.554 \| good	0.89 \| good	21.283 \| good	0.318 \| good
2026-10-21T11:00:00.000Z	33 \| good	6.3 \| good	22.877 \| good	25.634 \| good	0.841 \| good	21.501 \| good	0.452 \| good
2026-10-21T12:00:00.000Z	38 \| good	7.223 \| good	25.505 \| good	29.528 \| good	0.811 \| good	14.575 \| good	0.54 \| good
2026-10-21T13:00:00.000Z	33 \| good	6.25 \| good	25.826 \| good	30.212 \| good	1.085 \| good	15.406 \| good	0.622 \| good
2026-10-21T14:00:00.000Z	33 \| good	5.972 \| good	24.077 \| good	28.443 \| good	1.478 \| good	15.915 \| good	0.517 \| good
2026-10-21T15:00:00.000Z	33 \| good	5.692 \| good	24.997 \| good	29.033 \| good	1.508 \| good	21.654 \| good	0.573 \| good
2026-10-21T16:00:00.000Z	33 \| good	6.448 \| good	27.032 \| good	26.745 \| good	1.605 \| good	20.327 \| good	0.442 \| good
2026-10-21T17:00:00.000Z	35 \| good	5.933 \| good	25.742 \| good	37.909 \| good	1.195 \| good	12.226 \| good	0.34 \| good
2026-10-21T18:00:00.000Z	34 \| good	5.181 \| good	22.059 \| good	37.302 \| good	1.172 \| good	13.162 \| good	0.34 \| good
2026-10-21T19:00:00.000Z	39 \| good	3.843 \| good	16.636 \| good	41.839 \| good	0.781 \| good	7.342 \| good	0.189 \| good
2026-10-21T20:00:00.000Z	43 \| good	3.22 \| good	14.034 \| good	46.22 \| good	0.715 \| good	7.801 \| good	0.182 \| good
2026-10-21T21:00:00.000Z	46 \| good	2.783 \| good	12.076 \| good	49.541 \| good	0.506 \| good	6.867 \| good	0.144 \| good
2026-10-21T22:00:00.000Z	44 \| good	2.688 \| good	11.507 \| good	48.182 \| good	0.504 \| good	7.622 \| good	0.196 \| good
2026-10-21T23:00:00.000Z	47 \| good	2.416 \| good	10.329 \| good	51.078 \| good	0.394 \| good	9.308 \| good	0.197 \| good
2026-10-22T00:00:00.000Z	42 \| good	2.412 \| good	10.304 \| good	45.125 \| good	0.776 \| good	12.124 \| good	0.257 \| good
2026-10-22T01:00:00.000Z	39 \| good	2.127 \| good	9.134 \| good	41.702 \| good	0.566 \| good	16.996 \| good	0.397 \| good
2026-10-22T02:00:00.000Z	38 \| good	1.699 \| good	7.076 \| good	41.083 \| good	0.331 \| good	13.734 \| good	0.339 \| good
2026-10-22T03:00:00.000Z	31 \| good	0.732 \| good	2.492 \| good	34.333 \| good	0.309 \| good	20.578 \| good	0.214 \| good
2026-10-22T04:00:00.000Z	33 \| good	1.358 \| good	5.534 \| good	36.116 \| good	0.893 \| good	9.019 \| good	0.297 \| good
2026-10-22T05:00:00.000Z	33 \| good	1.36 \| good	5.72 \| good	36.412 \| good	0.732 \| good	8.079 \| good	0.267 \| good
2026-10-22T06:00:00.000Z	31 \| good	1.158 \| good	4.695 \| good	33.913 \| good	0.566 \| good	8.143 \| good	0.195 \| good
2026-10-22T07:00:00.000Z	31 \| good	0.829 \| good	3.373 \| good	33.32 \| good	0.644 \| good	7.751 \| good	0.144 \| good
2026-10-22T08:00:00.000Z	30 \| good	0.663 \| good	2.72 \| good	32.428 \| good	0.562 \| good	8.652 \| good	0.145 \| good
2026-10-22T09:00:00.000Z	30 \| good	0.526 \| good	2.115 \| good	31.887 \| good	0.858 \| good	6.891 \| good	0.111 \| good
2026-10-22T10:00:00.000Z	27 \| good	0.746 \| good	3.153 \| good	29.364 \| good	0.654 \| good	10.409 \| good	0.177 \| good
2026-10-22T11:00:00.000Z	25 \| good	0.641 \| good	2.695 \| good	26.868 \| good	0.399 \| good	9.677 \| good	0.233 \| good
2026-10-22T12:00:00.000Z	24 \| good	1.152 \| good	4.745 \| good	25.735 \| good	0.609 \| good	15.99 \| good	0.233 \| good
2026-10-22T13:00:00.000Z	23 \| good	1.46 \| good	5.94 \| good	23.734 \| good	0.595 \| good	23.72 \| good	0.51 \| good
2026-10-22T14:00:00.000Z	23 \| good	1.734 \| good	7.456 \| good	23.46 \| good	0.652 \| good	24.494 \| good	0.442 \| good
2026-10-22T15:00:00.000Z	25 \| good	2.134 \| good	9.235 \| good	19.729 \| good	0.899 \| good	25.791 \| good	0.705 \| good
2026-10-22T16:00:00.000Z	30 \| good	3.068 \| good	13.404 \| good	20.823 \| good	1.274 \| good	32.089 \| good	0.566 \| good
2026-10-22T17:00:00.000Z	26 \| good	3.55 \| good	15.293 \| good	25.102 \| good	1.297 \| good	28.271 \| good	0.486 \| good
2026-10-22T18:00:00.000Z	25 \| good	3.501 \| good	15.218 \| good	26.794 \| good	1.193 \| good	20.183 \| good	0.363 \| good
2026-10-22T19:00:00.000Z	28 \| good	2.731 \| good	11.812 \| good	29.533 \| good	0.921 \| good	14.675 \| good	0.356 \| good
2026-10-22T20:00:00.000Z	27 \| good	2.492 \| good	10.853 \| good	29.129 \| good	1.084 \| good	23.773 \| good	0.391 \| good
2026-10-22T21:00:00.000Z	24 \| good	3.809 \| good	16.436 \| good	26.295 \| good	1.088 \| good	24.025 \| good	0.398 \| good
2026-10-22T22:00:00.000Z	36 \| good	0.651 \| good	2.429 \| good	39.194 \| good	0.276 \| good	1.062 \| good	0.094 \| good
2026-10-22T23:00:00.000Z	32 \| good	1.258 \| good	5.217 \| good	34.502 \| good	0.274 \| good	1.401 \| good	0.097 \| good
2026-10-23T00:00:00.000Z	28 \| good	0.861 \| good	3.312 \| good	30.093 \| good	0.295 \| good	5.696 \| good	0.126 \| good
2026-10-23T01:00:00.000Z	25 \| good	0.415 \| good	1.462 \| good	27.153 \| good	0.355 \| good	12.125 \| good	0.165 \| good
2026-10-23T02:00:00.000Z	25 \| good	0.486 \| good	1.821 \| good	27.253 \| good	0.351 \| good	13.077 \| good	0.172 \| good
2026-10-23T03:00:00.000Z	31 \| good	0.381 \| good	1.318 \| good	33.756 \| good	0.323 \| good	12.958 \| good	0.17 \| good
2026-10-23T04:00:00.000Z	32 \| good	0.46 \| good	1.893 \| good	34.742 \| good	0.296 \| good	11.8 \| good	0.164 \| good
2026-10-23T05:00:00.000Z	31 \| good	0.211 \| good	0.336 \| good	32.906 \| good	0.268 \| good	10.255 \| good	0.156 \| good
2026-10-23T06:00:00.000Z	31 \| good	0.3 \| good	1.099 \| good	33.569 \| good	0.23 \| good	8.036 \| good	0.146 \| good
2026-10-23T07:00:00.000Z	29 \| good	0.269 \| good	1.045 \| good	30.917 \| good	0.193 \| good	5.709 \| good	0.134 \| good
2026-10-23T08:00:00.000Z	29 \| good	0.323 \| good	1.045 \| good	30.992 \| good	0.175 \| good	3.756 \| good	0.123 \| good
2026-10-23T09:00:00.000Z	29 \| good	0.329 \| good	1.229 \| good	30.948 \| good	0.17 \| good	2.429 \| good	0.115 \| good
2026-10-23T10:00:00.000Z	29 \| good	0.632 \| good	2.334 \| good	30.679 \| good	0.168 \| good	1.816 \| good	0.111 \| good
2026-10-23T11:00:00.000Z	30 \| good	0.515 \| good	2.067 \| good	31.504 \| good	0.164 \| good	1.573 \| good	0.11 \| good
2026-10-23T12:00:00.000Z	31 \| good	0.804 \| good	3.099 \| good	33.378 \| good	0.158 \| good	1.591 \| good	0.11 \| good
2026-10-23T13:00:00.000Z	29 \| good	1.001 \| good	4.051 \| good	31.275 \| good	0.158 \| good	2.261 \| good	0.114 \| good
2026-10-23T14:00:00.000Z	31 \| good	1.061 \| good	4.181 \| good	33.236 \| good	0.163 \| good	3.182 \| good	0.122 \| good
2026-10-23T15:00:00.000Z	33 \| good	0.27 \| good	1.01 \| good	36.286 \| good	0.158 \| good	2.76 \| good	0.125 \| good
2026-10-23T16:00:00.000Z	39 \| good	0.291 \| good	1 \| good	42.298 \| good	0.141 \| good	1.324 \| good	0.114 \| good
2026-10-23T17:00:00.000Z	44 \| good	0.108 \| good	0 \| good	46.537 \| good	0.134 \| good	0.733 \| good	0.107 \| good
2026-10-23T18:00:00.000Z	44 \| good	0.142 \| good	0.135 \| good	47.727 \| good	0.124 \| good	0.492 \| good	0.102 \| good
2026-10-23T19:00:00.000Z	46 \| good	0.58 \| good	2.141 \| good	49.678 \| good	0.113 \| good	0.419 \| good	0.1 \| good
2026-10-23T20:00:00.000Z	46 \| good	1.222 \| good	5.022 \| good	49.843 \| good	0.105 \| good	0.406 \| good	0.098 \| good
2026-10-23T21:00:00.000Z	46 \| good	1.483 \| good	6.151 \| good	50.244 \| good	0.1 \| good	0.43 \| good	0.096 \| good
2026-10-23T22:00:00.000Z	46 \| good	1.132 \| good	4.279 \| good	49.994 \| good	0.098 \| good	0.504 \| good	0.095 \| good
2026-10-23T23:00:00.000Z	44 \| good	0.471 \| good	1.721 \| good	48.052 \| good	0.098 \| good	0.694 \| good	0.096 \| good
2026-10-24T00:00:00.000Z	40 \| good	0.41 \| good	1.707 \| good	42.665 \| good	0.123 \| good	3.363 \| good	0.113 \| good
2026-10-24T01:00:00.000Z	34 \| good	0.462 \| good	1.893 \| good	37.279 \| good	0.171 \| good	7.937 \| good	0.138 \| good
2026-10-24T02:00:00.000Z	36 \| good	0.493 \| good	1.938 \| good	38.985 \| good	0.198 \| good	10.499 \| good	0.151 \| good
2026-10-24T03:00:00.000Z	31 \| good	0.634 \| good	2.24 \| good	32.788 \| good	0.202 \| good	11.154 \| good	0.151 \| good
2026-10-24T04:00:00.000Z	27 \| good	0.621 \| good	2.218 \| good	29.322 \| good	0.195 \| good	10.796 \| good	0.147 \| good
2026-10-24T05:00:00.000Z	27 \| good	0.588 \| good	2.229 \| good	28.527 \| good	0.191 \| good	11.074 \| good	0.147 \| good
2026-10-24T06:00:00.000Z	27 \| good	1.296 \| good	5.277 \| good	28.637 \| good	0.171 \| good	10.374 \| good	0.145 \| good
2026-10-24T07:00:00.000Z	26 \| good	1.508 \| good	6.382 \| good	27.576 \| good	0.147 \| good	8.991 \| good	0.14 \| good
2026-10-24T08:00:00.000Z	27 \| good	3.454 \| good	14.857 \| good	28.82 \| good	0.135 \| good	8.161 \| good	0.134 \| good
2026-10-24T09:00:00.000Z	54 \| moderate	11.01 \| good	49.272 \| good	29.843 \| good	0.135 \| good	8.274 \| good	0.134 \| good
2026-10-24T10:00:00.000Z	69 \| moderate	18.783 \| fine	82.736 \| fine	28.478 \| good	0.167 \| good	9.427 \| good	0.139 \| good
2026-10-24T11:00:00.000Z	81 \| moderate	24.916 \| fine	108.655 \| fine	30.53 \| good	0.212 \| good	10.349 \| good	0.143 \| good
2026-10-24T12:00:00.000Z	86 \| moderate	28.153 \| fine	122.353 \| fine	32.933 \| good	0.249 \| good	10.198 \| good	0.145 \| good
2026-10-24T13:00:00.000Z	84 \| moderate	27.375 \| fine	119.079 \| fine	33.061 \| good	0.294 \| good	11.714 \| good	0.153 \| good
2026-10-24T14:00:00.000Z	73 \| moderate	21.482 \| fine	94.388 \| fine	34.066 \| good	0.346 \| good	12.991 \| good	0.165 \| good
2026-10-24T15:00:00.000Z	52 \| moderate	9.857 \| good	43.816 \| good	37.283 \| good	0.306 \| good	5.039 \| good	0.132 \| good
2026-10-24T16:00:00.000Z	52 \| moderate	10.08 \| good	44.958 \| good	36.519 \| good	0.339 \| good	3.462 \| good	0.129 \| good
2026-10-24T17:00:00.000Z	52 \| moderate	10.411 \| good	46.074 \| good	35.625 \| good	0.392 \| good	2.946 \| good	0.131 \| good
2026-10-24T18:00:00.000Z	44 \| good	7.869 \| good	34.794 \| good	36.232 \| good	0.439 \| good	2.531 \| good	0.132 \| good
2026-10-24T19:00:00.000Z	38 \| good	6.77 \| good	29.879 \| good	39.13 \| good	0.496 \| good	2.444 \| good	0.135 \| good
2026-10-24T20:00:00.000Z	38 \| good	6.907 \| good	30.532 \| good	40.27 \| good	0.535 \| good	2.373 \| good	0.136 \| good
2026-10-24T21:00:00.000Z	49 \| good	9.043 \| good	40.187 \| good	40.767 \| good	0.568 \| good	2.469 \| good	0.138 \| good

Littleton

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Littleton, Colorado

0.41ppm

How accurate is Colorado, USA air quality data?

The air quality data for Colorado, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.

Source: Ambee Data Sources

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Frequently asked questions

How frequently does the air quality data for Littleton, Colorado get updated?

Air quality updates for Littleton, Colorado are available every hour.

What time in the past 24 hours saw the poorest air quality in Littleton, Colorado?

Littleton, Colorado experienced its worst air quality at 11:00:00, 2026-10-21.

When was air quality in Littleton, Colorado the best over the past 24 hours?

The best air quality in Littleton, Colorado was observed at 02:00:00 on 2026-10-22.

What is the air quality in Littleton, Colorado right now?

The air quality in Littleton, Colorado right now is Good, with an AQI of 24.

What pollutant is most frequently found in Littleton, Colorado?

In Littleton, Colorado, O3 is the most frequently found pollutant.

What can I do if the air quality in Littleton, Colorado is poor?

When air quality in Littleton, Colorado is compromised, staying indoors and wearing a mask can reduce health risks.

What is the PM_2.5 concentration in Littleton, Colorado right now?

Littleton, Colorado currently has a PM_2.5 concentration of 3.809 μg/m³.

What is the current level of PM₁₀ in Littleton, Colorado?

Littleton, Colorado currently has a PM₁₀ concentration of 16.436 μg/m³.

What is the current level of carbon monoxide (CO) in Littleton, Colorado?

The current carbon monoxide (CO) level in Littleton, Colorado is 0.398 ppm.

What is the current level of sulfur dioxide (SO₂) in Littleton, Colorado?

The current sulfur dioxide (SO₂) concentration in Littleton, Colorado is 1.088 ppb.

What is the current level of ozone (O₃) in Littleton, Colorado?

Littleton, Colorado currently has an ozone (O₃) concentration of 26.295 ppm.

What is the current level of nitrogen dioxide (NO₂) in Littleton, Colorado?

The current level of nitrogen dioxide (NO₂) in Littleton, Colorado is 24.025 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-20T22:00:00.000Z	43 \| good	6.831 \| good	23.014 \| good	46.073 \| good	1.07 \| good	10.46 \| good	0.225 \| good
2026-10-20T23:00:00.000Z	43 \| good	5.554 \| good	24.466 \| good	45.594 \| good	0.929 \| good	10.901 \| good	0.236 \| good
2026-10-21T00:00:00.000Z	39 \| good	4.794 \| good	19.437 \| good	42.02 \| good	0.87 \| good	11.338 \| good	0.195 \| good
2026-10-21T01:00:00.000Z	32 \| good	4.234 \| good	18.318 \| good	34.595 \| good	0.787 \| good	28.738 \| good	0.538 \| good
2026-10-21T02:00:00.000Z	42 \| good	4.093 \| good	18.731 \| good	34.017 \| good	1.03 \| good	44.409 \| good	0.821 \| good
2026-10-21T03:00:00.000Z	33 \| good	2.188 \| good	8.781 \| good	35.756 \| good	0.524 \| good	24.508 \| good	0.227 \| good
2026-10-21T04:00:00.000Z	31 \| good	4.556 \| good	17.415 \| good	30.472 \| good	0.989 \| good	33.027 \| good	0.667 \| good
2026-10-21T05:00:00.000Z	30 \| good	4.153 \| good	17.284 \| good	32.233 \| good	0.847 \| good	32.432 \| good	0.493 \| good
2026-10-21T06:00:00.000Z	28 \| good	3.893 \| good	17.088 \| good	29.819 \| good	1.122 \| good	26.546 \| good	0.53 \| good
2026-10-21T07:00:00.000Z	30 \| good	3.75 \| good	15.865 \| good	31.666 \| good	1.285 \| good	19.913 \| good	0.356 \| good
2026-10-21T08:00:00.000Z	26 \| good	3.635 \| good	15.144 \| good	27.888 \| good	1.013 \| good	16.498 \| good	0.319 \| good
2026-10-21T09:00:00.000Z	29 \| good	3.929 \| good	16.792 \| good	30.5 \| good	0.935 \| good	16.273 \| good	0.281 \| good
2026-10-21T10:00:00.000Z	28 \| good	5.306 \| good	21.997 \| good	29.554 \| good	0.89 \| good	21.283 \| good	0.318 \| good
2026-10-21T11:00:00.000Z	33 \| good	6.3 \| good	22.877 \| good	25.634 \| good	0.841 \| good	21.501 \| good	0.452 \| good
2026-10-21T12:00:00.000Z	38 \| good	7.223 \| good	25.505 \| good	29.528 \| good	0.811 \| good	14.575 \| good	0.54 \| good
2026-10-21T13:00:00.000Z	33 \| good	6.25 \| good	25.826 \| good	30.212 \| good	1.085 \| good	15.406 \| good	0.622 \| good
2026-10-21T14:00:00.000Z	33 \| good	5.972 \| good	24.077 \| good	28.443 \| good	1.478 \| good	15.915 \| good	0.517 \| good
2026-10-21T15:00:00.000Z	33 \| good	5.692 \| good	24.997 \| good	29.033 \| good	1.508 \| good	21.654 \| good	0.573 \| good
2026-10-21T16:00:00.000Z	33 \| good	6.448 \| good	27.032 \| good	26.745 \| good	1.605 \| good	20.327 \| good	0.442 \| good
2026-10-21T17:00:00.000Z	35 \| good	5.933 \| good	25.742 \| good	37.909 \| good	1.195 \| good	12.226 \| good	0.34 \| good
2026-10-21T18:00:00.000Z	34 \| good	5.181 \| good	22.059 \| good	37.302 \| good	1.172 \| good	13.162 \| good	0.34 \| good
2026-10-21T19:00:00.000Z	39 \| good	3.843 \| good	16.636 \| good	41.839 \| good	0.781 \| good	7.342 \| good	0.189 \| good
2026-10-21T20:00:00.000Z	43 \| good	3.22 \| good	14.034 \| good	46.22 \| good	0.715 \| good	7.801 \| good	0.182 \| good
2026-10-21T21:00:00.000Z	46 \| good	2.783 \| good	12.076 \| good	49.541 \| good	0.506 \| good	6.867 \| good	0.144 \| good
2026-10-21T22:00:00.000Z	44 \| good	2.688 \| good	11.507 \| good	48.182 \| good	0.504 \| good	7.622 \| good	0.196 \| good
2026-10-21T23:00:00.000Z	47 \| good	2.416 \| good	10.329 \| good	51.078 \| good	0.394 \| good	9.308 \| good	0.197 \| good
2026-10-22T00:00:00.000Z	42 \| good	2.412 \| good	10.304 \| good	45.125 \| good	0.776 \| good	12.124 \| good	0.257 \| good
2026-10-22T01:00:00.000Z	39 \| good	2.127 \| good	9.134 \| good	41.702 \| good	0.566 \| good	16.996 \| good	0.397 \| good
2026-10-22T02:00:00.000Z	38 \| good	1.699 \| good	7.076 \| good	41.083 \| good	0.331 \| good	13.734 \| good	0.339 \| good
2026-10-22T03:00:00.000Z	31 \| good	0.732 \| good	2.492 \| good	34.333 \| good	0.309 \| good	20.578 \| good	0.214 \| good
2026-10-22T04:00:00.000Z	33 \| good	1.358 \| good	5.534 \| good	36.116 \| good	0.893 \| good	9.019 \| good	0.297 \| good
2026-10-22T05:00:00.000Z	33 \| good	1.36 \| good	5.72 \| good	36.412 \| good	0.732 \| good	8.079 \| good	0.267 \| good
2026-10-22T06:00:00.000Z	31 \| good	1.158 \| good	4.695 \| good	33.913 \| good	0.566 \| good	8.143 \| good	0.195 \| good
2026-10-22T07:00:00.000Z	31 \| good	0.829 \| good	3.373 \| good	33.32 \| good	0.644 \| good	7.751 \| good	0.144 \| good
2026-10-22T08:00:00.000Z	30 \| good	0.663 \| good	2.72 \| good	32.428 \| good	0.562 \| good	8.652 \| good	0.145 \| good
2026-10-22T09:00:00.000Z	30 \| good	0.526 \| good	2.115 \| good	31.887 \| good	0.858 \| good	6.891 \| good	0.111 \| good
2026-10-22T10:00:00.000Z	27 \| good	0.746 \| good	3.153 \| good	29.364 \| good	0.654 \| good	10.409 \| good	0.177 \| good
2026-10-22T11:00:00.000Z	25 \| good	0.641 \| good	2.695 \| good	26.868 \| good	0.399 \| good	9.677 \| good	0.233 \| good
2026-10-22T12:00:00.000Z	24 \| good	1.152 \| good	4.745 \| good	25.735 \| good	0.609 \| good	15.99 \| good	0.233 \| good
2026-10-22T13:00:00.000Z	23 \| good	1.46 \| good	5.94 \| good	23.734 \| good	0.595 \| good	23.72 \| good	0.51 \| good
2026-10-22T14:00:00.000Z	23 \| good	1.734 \| good	7.456 \| good	23.46 \| good	0.652 \| good	24.494 \| good	0.442 \| good
2026-10-22T15:00:00.000Z	25 \| good	2.134 \| good	9.235 \| good	19.729 \| good	0.899 \| good	25.791 \| good	0.705 \| good
2026-10-22T16:00:00.000Z	30 \| good	3.068 \| good	13.404 \| good	20.823 \| good	1.274 \| good	32.089 \| good	0.566 \| good
2026-10-22T17:00:00.000Z	26 \| good	3.55 \| good	15.293 \| good	25.102 \| good	1.297 \| good	28.271 \| good	0.486 \| good
2026-10-22T18:00:00.000Z	25 \| good	3.501 \| good	15.218 \| good	26.794 \| good	1.193 \| good	20.183 \| good	0.363 \| good
2026-10-22T19:00:00.000Z	28 \| good	2.731 \| good	11.812 \| good	29.533 \| good	0.921 \| good	14.675 \| good	0.356 \| good
2026-10-22T20:00:00.000Z	27 \| good	2.492 \| good	10.853 \| good	29.129 \| good	1.084 \| good	23.773 \| good	0.391 \| good
2026-10-22T21:00:00.000Z	24 \| good	3.809 \| good	16.436 \| good	26.295 \| good	1.088 \| good	24.025 \| good	0.398 \| good
2026-10-22T22:00:00.000Z	36 \| good	0.651 \| good	2.429 \| good	39.194 \| good	0.276 \| good	1.062 \| good	0.094 \| good
2026-10-22T23:00:00.000Z	32 \| good	1.258 \| good	5.217 \| good	34.502 \| good	0.274 \| good	1.401 \| good	0.097 \| good
2026-10-23T00:00:00.000Z	28 \| good	0.861 \| good	3.312 \| good	30.093 \| good	0.295 \| good	5.696 \| good	0.126 \| good
2026-10-23T01:00:00.000Z	25 \| good	0.415 \| good	1.462 \| good	27.153 \| good	0.355 \| good	12.125 \| good	0.165 \| good
2026-10-23T02:00:00.000Z	25 \| good	0.486 \| good	1.821 \| good	27.253 \| good	0.351 \| good	13.077 \| good	0.172 \| good
2026-10-23T03:00:00.000Z	31 \| good	0.381 \| good	1.318 \| good	33.756 \| good	0.323 \| good	12.958 \| good	0.17 \| good
2026-10-23T04:00:00.000Z	32 \| good	0.46 \| good	1.893 \| good	34.742 \| good	0.296 \| good	11.8 \| good	0.164 \| good
2026-10-23T05:00:00.000Z	31 \| good	0.211 \| good	0.336 \| good	32.906 \| good	0.268 \| good	10.255 \| good	0.156 \| good
2026-10-23T06:00:00.000Z	31 \| good	0.3 \| good	1.099 \| good	33.569 \| good	0.23 \| good	8.036 \| good	0.146 \| good
2026-10-23T07:00:00.000Z	29 \| good	0.269 \| good	1.045 \| good	30.917 \| good	0.193 \| good	5.709 \| good	0.134 \| good
2026-10-23T08:00:00.000Z	29 \| good	0.323 \| good	1.045 \| good	30.992 \| good	0.175 \| good	3.756 \| good	0.123 \| good
2026-10-23T09:00:00.000Z	29 \| good	0.329 \| good	1.229 \| good	30.948 \| good	0.17 \| good	2.429 \| good	0.115 \| good
2026-10-23T10:00:00.000Z	29 \| good	0.632 \| good	2.334 \| good	30.679 \| good	0.168 \| good	1.816 \| good	0.111 \| good
2026-10-23T11:00:00.000Z	30 \| good	0.515 \| good	2.067 \| good	31.504 \| good	0.164 \| good	1.573 \| good	0.11 \| good
2026-10-23T12:00:00.000Z	31 \| good	0.804 \| good	3.099 \| good	33.378 \| good	0.158 \| good	1.591 \| good	0.11 \| good
2026-10-23T13:00:00.000Z	29 \| good	1.001 \| good	4.051 \| good	31.275 \| good	0.158 \| good	2.261 \| good	0.114 \| good
2026-10-23T14:00:00.000Z	31 \| good	1.061 \| good	4.181 \| good	33.236 \| good	0.163 \| good	3.182 \| good	0.122 \| good
2026-10-23T15:00:00.000Z	33 \| good	0.27 \| good	1.01 \| good	36.286 \| good	0.158 \| good	2.76 \| good	0.125 \| good
2026-10-23T16:00:00.000Z	39 \| good	0.291 \| good	1 \| good	42.298 \| good	0.141 \| good	1.324 \| good	0.114 \| good
2026-10-23T17:00:00.000Z	44 \| good	0.108 \| good	0 \| good	46.537 \| good	0.134 \| good	0.733 \| good	0.107 \| good
2026-10-23T18:00:00.000Z	44 \| good	0.142 \| good	0.135 \| good	47.727 \| good	0.124 \| good	0.492 \| good	0.102 \| good
2026-10-23T19:00:00.000Z	46 \| good	0.58 \| good	2.141 \| good	49.678 \| good	0.113 \| good	0.419 \| good	0.1 \| good
2026-10-23T20:00:00.000Z	46 \| good	1.222 \| good	5.022 \| good	49.843 \| good	0.105 \| good	0.406 \| good	0.098 \| good
2026-10-23T21:00:00.000Z	46 \| good	1.483 \| good	6.151 \| good	50.244 \| good	0.1 \| good	0.43 \| good	0.096 \| good
2026-10-23T22:00:00.000Z	46 \| good	1.132 \| good	4.279 \| good	49.994 \| good	0.098 \| good	0.504 \| good	0.095 \| good
2026-10-23T23:00:00.000Z	44 \| good	0.471 \| good	1.721 \| good	48.052 \| good	0.098 \| good	0.694 \| good	0.096 \| good
2026-10-24T00:00:00.000Z	40 \| good	0.41 \| good	1.707 \| good	42.665 \| good	0.123 \| good	3.363 \| good	0.113 \| good
2026-10-24T01:00:00.000Z	34 \| good	0.462 \| good	1.893 \| good	37.279 \| good	0.171 \| good	7.937 \| good	0.138 \| good
2026-10-24T02:00:00.000Z	36 \| good	0.493 \| good	1.938 \| good	38.985 \| good	0.198 \| good	10.499 \| good	0.151 \| good
2026-10-24T03:00:00.000Z	31 \| good	0.634 \| good	2.24 \| good	32.788 \| good	0.202 \| good	11.154 \| good	0.151 \| good
2026-10-24T04:00:00.000Z	27 \| good	0.621 \| good	2.218 \| good	29.322 \| good	0.195 \| good	10.796 \| good	0.147 \| good
2026-10-24T05:00:00.000Z	27 \| good	0.588 \| good	2.229 \| good	28.527 \| good	0.191 \| good	11.074 \| good	0.147 \| good
2026-10-24T06:00:00.000Z	27 \| good	1.296 \| good	5.277 \| good	28.637 \| good	0.171 \| good	10.374 \| good	0.145 \| good
2026-10-24T07:00:00.000Z	26 \| good	1.508 \| good	6.382 \| good	27.576 \| good	0.147 \| good	8.991 \| good	0.14 \| good
2026-10-24T08:00:00.000Z	27 \| good	3.454 \| good	14.857 \| good	28.82 \| good	0.135 \| good	8.161 \| good	0.134 \| good
2026-10-24T09:00:00.000Z	54 \| moderate	11.01 \| good	49.272 \| good	29.843 \| good	0.135 \| good	8.274 \| good	0.134 \| good
2026-10-24T10:00:00.000Z	69 \| moderate	18.783 \| fine	82.736 \| fine	28.478 \| good	0.167 \| good	9.427 \| good	0.139 \| good
2026-10-24T11:00:00.000Z	81 \| moderate	24.916 \| fine	108.655 \| fine	30.53 \| good	0.212 \| good	10.349 \| good	0.143 \| good
2026-10-24T12:00:00.000Z	86 \| moderate	28.153 \| fine	122.353 \| fine	32.933 \| good	0.249 \| good	10.198 \| good	0.145 \| good
2026-10-24T13:00:00.000Z	84 \| moderate	27.375 \| fine	119.079 \| fine	33.061 \| good	0.294 \| good	11.714 \| good	0.153 \| good
2026-10-24T14:00:00.000Z	73 \| moderate	21.482 \| fine	94.388 \| fine	34.066 \| good	0.346 \| good	12.991 \| good	0.165 \| good
2026-10-24T15:00:00.000Z	52 \| moderate	9.857 \| good	43.816 \| good	37.283 \| good	0.306 \| good	5.039 \| good	0.132 \| good
2026-10-24T16:00:00.000Z	52 \| moderate	10.08 \| good	44.958 \| good	36.519 \| good	0.339 \| good	3.462 \| good	0.129 \| good
2026-10-24T17:00:00.000Z	52 \| moderate	10.411 \| good	46.074 \| good	35.625 \| good	0.392 \| good	2.946 \| good	0.131 \| good
2026-10-24T18:00:00.000Z	44 \| good	7.869 \| good	34.794 \| good	36.232 \| good	0.439 \| good	2.531 \| good	0.132 \| good
2026-10-24T19:00:00.000Z	38 \| good	6.77 \| good	29.879 \| good	39.13 \| good	0.496 \| good	2.444 \| good	0.135 \| good
2026-10-24T20:00:00.000Z	38 \| good	6.907 \| good	30.532 \| good	40.27 \| good	0.535 \| good	2.373 \| good	0.136 \| good
2026-10-24T21:00:00.000Z	49 \| good	9.043 \| good	40.187 \| good	40.767 \| good	0.568 \| good	2.469 \| good	0.138 \| good

Current air quality index in Littleton, Colorado today

Common air pollutants in Littleton, Colorado

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Littleton, Colorado

Air quality in nearby cities

Englewood, Colorado

Columbine, Colorado

Greenwood Village, Colorado

Highlands Ranch, Colorado

Ken Caryl, Colorado

Lakewood, Colorado

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Frequently asked questions

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What is the PM2.5 concentration in Littleton, Colorado right now?

What is the current level of PM10 in Littleton, Colorado?

What is the current level of carbon monoxide (CO) in Littleton, Colorado?

What is the current level of sulfur dioxide (SO2) in Littleton, Colorado?

What is the current level of ozone (O3) in Littleton, Colorado?

What is the current level of nitrogen dioxide (NO2) in Littleton, Colorado?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 concentration in Littleton, Colorado right now?

What is the current level of PM₁₀ in Littleton, Colorado?

What is the current level of sulfur dioxide (SO₂) in Littleton, Colorado?

What is the current level of ozone (O₃) in Littleton, Colorado?

What is the current level of nitrogen dioxide (NO₂) in Littleton, Colorado?