What is the current level of PM10 in Four Square Mile, Colorado?

Four Square Mile, Colorado currently has a PM10 concentration of 5.614 μg/m3.

What is the current level of sulfur dioxide (SO2) in Four Square Mile, Colorado?

The current sulfur dioxide (SO2) concentration in Four Square Mile, Colorado is 0.355 ppb.

What is the current level of ozone (O3) in Four Square Mile, Colorado?

Four Square Mile, Colorado currently has an ozone (O3) concentration of 41.153 ppm.

What is the current level of nitrogen dioxide (NO2) in Four Square Mile, Colorado?

The current level of nitrogen dioxide (NO2) in Four Square Mile, Colorado is 6.29 ppb.

Current air quality index in Four Square Mile, Colorado today

Q: What is the PM2.5 concentration in Four Square Mile, Colorado right now?

Four Square Mile, Colorado currently has a PM2.5 concentration of 1.205 μg/m3.

Stay updated with real-time air quality in Four Square Mile, 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

Four Square Mile, Colorado

Last updated: ... (Local time)

Common air pollutants in Four Square Mile, Colorado

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

1.21 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

5.61 μg/m³

155

255

425

605+

Ozone (O₃)

41.15 ppb

201

201+

Sulfur Dioxide (SO₂)

0.35 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.29 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.23 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

Four Square Mile, Colorado

Get Live Pollen Counts

Four Square Mile, Colorado

Scroll To Air Quality Map

Track live Four Square Mile, Colorado air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-22T06:00:00.000Z	44 \| good	5.022 \| good	22.145 \| good	47.846 \| good	0.634 \| good	16.008 \| good	0.261 \| good
2026-04-22T07:00:00.000Z	43 \| good	5.204 \| good	22.36 \| good	45.907 \| good	0.682 \| good	13.052 \| good	0.315 \| good
2026-04-22T08:00:00.000Z	42 \| good	5.007 \| good	21.127 \| good	44.755 \| good	0.631 \| good	11.186 \| good	0.195 \| good
2026-04-22T09:00:00.000Z	39 \| good	4.889 \| good	20.453 \| good	42.381 \| good	0.632 \| good	9.42 \| good	0.161 \| good
2026-04-22T10:00:00.000Z	36 \| good	4.739 \| good	19.624 \| good	39.448 \| good	0.752 \| good	10.796 \| good	0.164 \| good
2026-04-22T11:00:00.000Z	34 \| good	4.581 \| good	17.574 \| good	36.933 \| good	0.872 \| good	19.871 \| good	0.223 \| good
2026-04-22T12:00:00.000Z	34 \| good	4.6 \| good	17.165 \| good	37.12 \| good	0.904 \| good	28.205 \| good	0.377 \| good
2026-04-22T13:00:00.000Z	32 \| good	4.779 \| good	18.805 \| good	34.517 \| good	0.785 \| good	33.76 \| good	0.411 \| good
2026-04-22T14:00:00.000Z	34 \| good	4.764 \| good	19.951 \| good	36.605 \| good	0.865 \| good	29.36 \| good	0.263 \| good
2026-04-22T15:00:00.000Z	34 \| good	4.902 \| good	20.896 \| good	36.599 \| good	0.857 \| good	23.338 \| good	0.325 \| good
2026-04-22T16:00:00.000Z	42 \| good	4.655 \| good	20.736 \| good	44.661 \| good	0.609 \| good	19.419 \| good	0.321 \| good
2026-04-22T17:00:00.000Z	44 \| good	4.423 \| good	21.853 \| good	47.729 \| good	0.528 \| good	14.987 \| good	0.26 \| good
2026-04-22T18:00:00.000Z	47 \| good	4.214 \| good	25.282 \| good	51.134 \| good	0.422 \| good	12.753 \| good	0.257 \| good
2026-04-22T19:00:00.000Z	49 \| good	3.417 \| good	21.044 \| good	53.062 \| good	0.438 \| good	10.713 \| good	0.193 \| good
2026-04-22T20:00:00.000Z	49 \| good	3.093 \| good	17.975 \| good	53.393 \| good	0.37 \| good	11.696 \| good	0.254 \| good
2026-04-22T21:00:00.000Z	51 \| moderate	2.766 \| good	16.746 \| good	54.559 \| good	0.355 \| good	12.247 \| good	0.282 \| good
2026-04-22T22:00:00.000Z	51 \| moderate	2.579 \| good	14.656 \| good	54.911 \| good	0.424 \| good	10.806 \| good	0.282 \| good
2026-04-22T23:00:00.000Z	50 \| good	2.825 \| good	16.476 \| good	54.215 \| good	0.326 \| good	8.767 \| good	0.22 \| good
2026-04-23T00:00:00.000Z	51 \| moderate	3.204 \| good	28.011 \| good	54.669 \| good	0.317 \| good	7.489 \| good	0.22 \| good
2026-04-23T01:00:00.000Z	50 \| good	2.954 \| good	25.513 \| good	53.751 \| good	0.219 \| good	8.064 \| good	0.217 \| good
2026-04-23T02:00:00.000Z	48 \| good	2.606 \| good	12.63 \| good	52.178 \| good	0.302 \| good	8.517 \| good	0.217 \| good
2026-04-23T03:00:00.000Z	49 \| good	2.563 \| good	11.903 \| good	52.658 \| good	0.411 \| good	9.469 \| good	0.22 \| good
2026-04-23T04:00:00.000Z	47 \| good	2.788 \| good	12.508 \| good	51.425 \| good	0.318 \| good	9.685 \| good	0.28 \| good
2026-04-23T05:00:00.000Z	44 \| good	3.031 \| good	16.554 \| good	48.442 \| good	0.308 \| good	8.992 \| good	0.277 \| good
2026-04-23T06:00:00.000Z	43 \| good	3.405 \| good	17.263 \| good	45.969 \| good	0.301 \| good	10.347 \| good	0.217 \| good
2026-04-23T07:00:00.000Z	44 \| good	5.38 \| good	30.974 \| good	47.452 \| good	0.481 \| good	6.906 \| good	0.159 \| good
2026-04-23T08:00:00.000Z	43 \| good	5.606 \| good	31.361 \| good	46.3 \| good	0.48 \| good	5.425 \| good	0.1 \| good
2026-04-23T09:00:00.000Z	43 \| good	4.921 \| good	30.717 \| good	45.721 \| good	0.289 \| good	3.817 \| good	0.1 \| good
2026-04-23T10:00:00.000Z	43 \| good	4.386 \| good	29.53 \| good	46.335 \| good	0.314 \| good	5.403 \| good	0.1 \| good
2026-04-23T11:00:00.000Z	42 \| good	4.358 \| good	31.067 \| good	44.694 \| good	0.332 \| good	10.183 \| good	0.251 \| good
2026-04-23T12:00:00.000Z	36 \| good	4.275 \| good	27.363 \| good	39.385 \| good	0.382 \| good	17.811 \| good	0.23 \| good
2026-04-23T13:00:00.000Z	36 \| good	4.431 \| good	28.49 \| good	38.882 \| good	0.417 \| good	26.899 \| good	0.347 \| good
2026-04-23T14:00:00.000Z	37 \| good	4.801 \| good	32.867 \| good	39.566 \| good	0.432 \| good	21.137 \| good	0.31 \| good
2026-04-23T15:00:00.000Z	44 \| good	4.268 \| good	26.848 \| good	47.5 \| good	0.516 \| good	15.325 \| good	0.334 \| good
2026-04-23T16:00:00.000Z	45 \| good	3.269 \| good	20.01 \| good	48.773 \| good	0.411 \| good	9.834 \| good	0.217 \| good
2026-04-23T17:00:00.000Z	46 \| good	2.777 \| good	16.766 \| good	49.941 \| good	0.287 \| good	9.504 \| good	0.217 \| good
2026-04-23T18:00:00.000Z	51 \| moderate	2.651 \| good	17.774 \| good	55.388 \| fine	0.412 \| good	8.4 \| good	0.217 \| good
2026-04-23T19:00:00.000Z	47 \| good	2.194 \| good	12.874 \| good	51.31 \| good	0.2 \| good	10.586 \| good	0.278 \| good
2026-04-23T20:00:00.000Z	48 \| good	2.045 \| good	13.866 \| good	51.991 \| good	0.191 \| good	10.369 \| good	0.217 \| good
2026-04-23T21:00:00.000Z	48 \| good	1.824 \| good	13.312 \| good	51.93 \| good	0.34 \| good	11.99 \| good	0.276 \| good
2026-04-23T22:00:00.000Z	47 \| good	1.79 \| good	11.651 \| good	50.959 \| good	0.192 \| good	9.848 \| good	0.31 \| good
2026-04-23T23:00:00.000Z	45 \| good	1.824 \| good	15.103 \| good	48.786 \| good	0.455 \| good	9.41 \| good	0.278 \| good
2026-04-24T00:00:00.000Z	44 \| good	1.576 \| good	8.733 \| good	48.123 \| good	0.429 \| good	7.847 \| good	0.276 \| good
2026-04-24T01:00:00.000Z	43 \| good	1.53 \| good	8.642 \| good	46.25 \| good	0.262 \| good	8.446 \| good	0.276 \| good
2026-04-24T02:00:00.000Z	41 \| good	1.304 \| good	7.358 \| good	44.351 \| good	0.434 \| good	8.337 \| good	0.276 \| good
2026-04-24T03:00:00.000Z	79 \| moderate	24.35 \| fine	106.423 \| fine	39.729 \| good	0.447 \| good	7.405 \| good	0.161 \| good
2026-04-24T04:00:00.000Z	39 \| good	1.322 \| good	6.145 \| good	41.801 \| good	0.349 \| good	5.599 \| good	0.222 \| good
2026-04-24T05:00:00.000Z	38 \| good	1.205 \| good	5.614 \| good	41.153 \| good	0.355 \| good	6.29 \| good	0.228 \| good
2026-04-24T05:00:00.000Z	38 \| good	1.205 \| good	5.614 \| good	41.153 \| good	0.355 \| good	6.29 \| good	0.228 \| good
2026-04-24T06:00:00.000Z	129 \| sensitive	46.747 \| moderate	209.792 \| moderate	42.121 \| good	0.462 \| good	7.367 \| good	0.162 \| good
2026-04-24T07:00:00.000Z	105 \| sensitive	36.919 \| moderate	161.687 \| moderate	38.654 \| good	0.409 \| good	6.31 \| good	0.155 \| good
2026-04-24T08:00:00.000Z	81 \| moderate	24.907 \| fine	109.256 \| fine	37.616 \| good	0.355 \| good	5.254 \| good	0.149 \| good
2026-04-24T09:00:00.000Z	60 \| moderate	14.287 \| fine	64.07 \| fine	36.235 \| good	0.302 \| good	4.198 \| good	0.142 \| good
2026-04-24T10:00:00.000Z	52 \| moderate	9.666 \| good	43.074 \| good	34.443 \| good	0.291 \| good	4.067 \| good	0.14 \| good
2026-04-24T11:00:00.000Z	44 \| good	7.618 \| good	33.508 \| good	27.284 \| good	0.281 \| good	3.936 \| good	0.138 \| good
2026-04-24T12:00:00.000Z	44 \| good	7.523 \| good	33.012 \| good	21.145 \| good	0.27 \| good	3.805 \| good	0.136 \| good
2026-04-24T13:00:00.000Z	44 \| good	7.648 \| good	33.289 \| good	27.485 \| good	0.323 \| good	3.533 \| good	0.138 \| good
2026-04-24T14:00:00.000Z	44 \| good	7.532 \| good	33.426 \| good	33.566 \| good	0.376 \| good	3.26 \| good	0.14 \| good
2026-04-24T15:00:00.000Z	49 \| good	8.586 \| good	37.66 \| good	39.098 \| good	0.429 \| good	2.987 \| good	0.142 \| good
2026-04-24T16:00:00.000Z	44 \| good	8.117 \| good	35.667 \| good	45.623 \| good	0.374 \| good	2.287 \| good	0.134 \| good
2026-04-24T17:00:00.000Z	47 \| good	5.972 \| good	26.6 \| good	50.854 \| good	0.318 \| good	1.588 \| good	0.125 \| good
2026-04-24T18:00:00.000Z	49 \| good	4.566 \| good	19.934 \| good	53.252 \| good	0.262 \| good	0.889 \| good	0.116 \| good
2026-04-24T19:00:00.000Z	49 \| good	4.351 \| good	19.162 \| good	52.811 \| good	0.24 \| good	0.765 \| good	0.115 \| good
2026-04-24T20:00:00.000Z	51 \| moderate	3.737 \| good	16.234 \| good	54.984 \| good	0.217 \| good	0.642 \| good	0.113 \| good
2026-04-24T21:00:00.000Z	61 \| moderate	3.898 \| good	16.901 \| good	58.336 \| fine	0.195 \| good	0.518 \| good	0.112 \| good
2026-04-24T22:00:00.000Z	67 \| moderate	4.314 \| good	18.901 \| good	59.907 \| fine	0.187 \| good	0.592 \| good	0.112 \| good
2026-04-24T23:00:00.000Z	77 \| moderate	2.233 \| good	8.999 \| good	63.208 \| fine	0.179 \| good	0.666 \| good	0.113 \| good
2026-04-25T00:00:00.000Z	67 \| moderate	2.889 \| good	11.993 \| good	60.283 \| fine	0.171 \| good	0.74 \| good	0.113 \| good
2026-04-25T01:00:00.000Z	58 \| moderate	2.291 \| good	9.122 \| good	57.099 \| fine	0.242 \| good	2.779 \| good	0.127 \| good
2026-04-25T02:00:00.000Z	44 \| good	2.804 \| good	11.785 \| good	47.297 \| good	0.313 \| good	4.817 \| good	0.141 \| good
2026-04-25T03:00:00.000Z	52 \| moderate	9.936 \| good	43.941 \| good	41.642 \| good	0.383 \| good	6.856 \| good	0.154 \| good
2026-04-25T04:00:00.000Z	84 \| moderate	26.682 \| fine	116.08 \| fine	40.744 \| good	0.395 \| good	7.737 \| good	0.161 \| good
2026-04-25T05:00:00.000Z	107 \| sensitive	37.755 \| moderate	167.11 \| moderate	36.553 \| good	0.406 \| good	8.619 \| good	0.167 \| good
2026-04-25T06:00:00.000Z	97 \| moderate	34.069 \| fine	147.608 \| fine	35.293 \| good	0.417 \| good	9.501 \| good	0.173 \| good
2026-04-25T07:00:00.000Z	34 \| good	2.585 \| good	10.536 \| good	37.147 \| good	0.386 \| good	7.382 \| good	0.163 \| good
2026-04-25T08:00:00.000Z	34 \| good	2.362 \| good	9.947 \| good	37.45 \| good	0.355 \| good	5.264 \| good	0.152 \| good
2026-04-25T09:00:00.000Z	39 \| good	2.936 \| good	11.975 \| good	41.54 \| good	0.324 \| good	3.145 \| good	0.141 \| good
2026-04-25T10:00:00.000Z	39 \| good	2.532 \| good	10.142 \| good	41.636 \| good	0.377 \| good	3.256 \| good	0.142 \| good
2026-04-25T11:00:00.000Z	35 \| good	3.086 \| good	12.371 \| good	38.147 \| good	0.43 \| good	3.367 \| good	0.142 \| good
2026-04-25T12:00:00.000Z	31 \| good	4.594 \| good	19.922 \| good	33.909 \| good	0.484 \| good	3.478 \| good	0.142 \| good
2026-04-25T13:00:00.000Z	33 \| good	5.635 \| good	24.095 \| good	35.558 \| good	0.502 \| good	3.206 \| good	0.142 \| good
2026-04-25T14:00:00.000Z	33 \| good	6.147 \| good	27.204 \| good	36.284 \| good	0.52 \| good	2.935 \| good	0.143 \| good
2026-04-25T15:00:00.000Z	38 \| good	7.329 \| good	32.105 \| good	37.022 \| good	0.538 \| good	2.663 \| good	0.143 \| good
2026-04-25T16:00:00.000Z	44 \| good	8.289 \| good	36.204 \| good	39.846 \| good	0.526 \| good	2.357 \| good	0.141 \| good
2026-04-25T17:00:00.000Z	49 \| good	9.311 \| good	41.197 \| good	44.308 \| good	0.513 \| good	2.052 \| good	0.139 \| good
2026-04-25T18:00:00.000Z	52 \| moderate	9.657 \| good	43.033 \| good	47.202 \| good	0.501 \| good	1.746 \| good	0.136 \| good
2026-04-25T19:00:00.000Z	52 \| moderate	9.789 \| good	43.303 \| good	48.231 \| good	0.44 \| good	1.519 \| good	0.133 \| good
2026-04-25T20:00:00.000Z	52 \| moderate	9.899 \| good	44.001 \| good	52.526 \| good	0.38 \| good	1.292 \| good	0.129 \| good
2026-04-25T21:00:00.000Z	54 \| moderate	9.377 \| good	41.796 \| good	56.48 \| fine	0.32 \| good	1.065 \| good	0.126 \| good
2026-04-25T22:00:00.000Z	61 \| moderate	7.704 \| good	33.901 \| good	57.71 \| fine	0.306 \| good	1.175 \| good	0.125 \| good
2026-04-25T23:00:00.000Z	58 \| moderate	5.179 \| good	22.776 \| good	57.419 \| fine	0.293 \| good	1.286 \| good	0.125 \| good
2026-04-26T00:00:00.000Z	49 \| good	9.278 \| good	41.156 \| good	52.32 \| good	0.279 \| good	1.396 \| good	0.124 \| good
2026-04-26T01:00:00.000Z	50 \| good	5.613 \| good	24.027 \| good	53.598 \| good	0.371 \| good	3.392 \| good	0.138 \| good
2026-04-26T02:00:00.000Z	39 \| good	5.467 \| good	23.135 \| good	42.022 \| good	0.463 \| good	5.388 \| good	0.152 \| good
2026-04-26T03:00:00.000Z	36 \| good	5.786 \| good	25.148 \| good	39.175 \| good	0.555 \| good	7.384 \| good	0.165 \| good
2026-04-26T04:00:00.000Z	39 \| good	3.989 \| good	17.345 \| good	41.845 \| good	0.602 \| good	8.258 \| good	0.172 \| good
2026-04-26T05:00:00.000Z	41 \| good	3.766 \| good	16.346 \| good	43.941 \| good	0.649 \| good	9.133 \| good	0.178 \| good

Four Square Mile

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Four Square Mile, Colorado

0.27ppm

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 Four Square Mile, Colorado get updated?

Air quality updates for Four Square Mile, Colorado are available every hour.

What time in the past 24 hours saw the poorest air quality in Four Square Mile, Colorado?

Four Square Mile, Colorado experienced its worst air quality at 03:00:00, 2026-04-24.

When was air quality in Four Square Mile, Colorado the best over the past 24 hours?

The best air quality in Four Square Mile, Colorado was observed at 02:00:00 on 2026-04-23.

What is the air quality in Four Square Mile, Colorado right now?

The air quality in Four Square Mile, Colorado right now is Good, with an AQI of 38.

What pollutant is most frequently found in Four Square Mile, Colorado?

In Four Square Mile, Colorado, O3 is the most frequently found pollutant.

What can I do if the air quality in Four Square Mile, Colorado is poor?

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

What is the PM_2.5 concentration in Four Square Mile, Colorado right now?

Four Square Mile, Colorado currently has a PM_2.5 concentration of 1.205 μg/m³.

What is the current level of PM₁₀ in Four Square Mile, Colorado?

Four Square Mile, Colorado currently has a PM₁₀ concentration of 5.614 μg/m³.

What is the current level of carbon monoxide (CO) in Four Square Mile, Colorado?

The current carbon monoxide (CO) level in Four Square Mile, Colorado is 0.228 ppm.

What is the current level of sulfur dioxide (SO₂) in Four Square Mile, Colorado?

The current sulfur dioxide (SO₂) concentration in Four Square Mile, Colorado is 0.355 ppb.

What is the current level of ozone (O₃) in Four Square Mile, Colorado?

Four Square Mile, Colorado currently has an ozone (O₃) concentration of 41.153 ppm.

What is the current level of nitrogen dioxide (NO₂) in Four Square Mile, Colorado?

The current level of nitrogen dioxide (NO₂) in Four Square Mile, Colorado is 6.29 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-22T06:00:00.000Z	44 \| good	5.022 \| good	22.145 \| good	47.846 \| good	0.634 \| good	16.008 \| good	0.261 \| good
2026-04-22T07:00:00.000Z	43 \| good	5.204 \| good	22.36 \| good	45.907 \| good	0.682 \| good	13.052 \| good	0.315 \| good
2026-04-22T08:00:00.000Z	42 \| good	5.007 \| good	21.127 \| good	44.755 \| good	0.631 \| good	11.186 \| good	0.195 \| good
2026-04-22T09:00:00.000Z	39 \| good	4.889 \| good	20.453 \| good	42.381 \| good	0.632 \| good	9.42 \| good	0.161 \| good
2026-04-22T10:00:00.000Z	36 \| good	4.739 \| good	19.624 \| good	39.448 \| good	0.752 \| good	10.796 \| good	0.164 \| good
2026-04-22T11:00:00.000Z	34 \| good	4.581 \| good	17.574 \| good	36.933 \| good	0.872 \| good	19.871 \| good	0.223 \| good
2026-04-22T12:00:00.000Z	34 \| good	4.6 \| good	17.165 \| good	37.12 \| good	0.904 \| good	28.205 \| good	0.377 \| good
2026-04-22T13:00:00.000Z	32 \| good	4.779 \| good	18.805 \| good	34.517 \| good	0.785 \| good	33.76 \| good	0.411 \| good
2026-04-22T14:00:00.000Z	34 \| good	4.764 \| good	19.951 \| good	36.605 \| good	0.865 \| good	29.36 \| good	0.263 \| good
2026-04-22T15:00:00.000Z	34 \| good	4.902 \| good	20.896 \| good	36.599 \| good	0.857 \| good	23.338 \| good	0.325 \| good
2026-04-22T16:00:00.000Z	42 \| good	4.655 \| good	20.736 \| good	44.661 \| good	0.609 \| good	19.419 \| good	0.321 \| good
2026-04-22T17:00:00.000Z	44 \| good	4.423 \| good	21.853 \| good	47.729 \| good	0.528 \| good	14.987 \| good	0.26 \| good
2026-04-22T18:00:00.000Z	47 \| good	4.214 \| good	25.282 \| good	51.134 \| good	0.422 \| good	12.753 \| good	0.257 \| good
2026-04-22T19:00:00.000Z	49 \| good	3.417 \| good	21.044 \| good	53.062 \| good	0.438 \| good	10.713 \| good	0.193 \| good
2026-04-22T20:00:00.000Z	49 \| good	3.093 \| good	17.975 \| good	53.393 \| good	0.37 \| good	11.696 \| good	0.254 \| good
2026-04-22T21:00:00.000Z	51 \| moderate	2.766 \| good	16.746 \| good	54.559 \| good	0.355 \| good	12.247 \| good	0.282 \| good
2026-04-22T22:00:00.000Z	51 \| moderate	2.579 \| good	14.656 \| good	54.911 \| good	0.424 \| good	10.806 \| good	0.282 \| good
2026-04-22T23:00:00.000Z	50 \| good	2.825 \| good	16.476 \| good	54.215 \| good	0.326 \| good	8.767 \| good	0.22 \| good
2026-04-23T00:00:00.000Z	51 \| moderate	3.204 \| good	28.011 \| good	54.669 \| good	0.317 \| good	7.489 \| good	0.22 \| good
2026-04-23T01:00:00.000Z	50 \| good	2.954 \| good	25.513 \| good	53.751 \| good	0.219 \| good	8.064 \| good	0.217 \| good
2026-04-23T02:00:00.000Z	48 \| good	2.606 \| good	12.63 \| good	52.178 \| good	0.302 \| good	8.517 \| good	0.217 \| good
2026-04-23T03:00:00.000Z	49 \| good	2.563 \| good	11.903 \| good	52.658 \| good	0.411 \| good	9.469 \| good	0.22 \| good
2026-04-23T04:00:00.000Z	47 \| good	2.788 \| good	12.508 \| good	51.425 \| good	0.318 \| good	9.685 \| good	0.28 \| good
2026-04-23T05:00:00.000Z	44 \| good	3.031 \| good	16.554 \| good	48.442 \| good	0.308 \| good	8.992 \| good	0.277 \| good
2026-04-23T06:00:00.000Z	43 \| good	3.405 \| good	17.263 \| good	45.969 \| good	0.301 \| good	10.347 \| good	0.217 \| good
2026-04-23T07:00:00.000Z	44 \| good	5.38 \| good	30.974 \| good	47.452 \| good	0.481 \| good	6.906 \| good	0.159 \| good
2026-04-23T08:00:00.000Z	43 \| good	5.606 \| good	31.361 \| good	46.3 \| good	0.48 \| good	5.425 \| good	0.1 \| good
2026-04-23T09:00:00.000Z	43 \| good	4.921 \| good	30.717 \| good	45.721 \| good	0.289 \| good	3.817 \| good	0.1 \| good
2026-04-23T10:00:00.000Z	43 \| good	4.386 \| good	29.53 \| good	46.335 \| good	0.314 \| good	5.403 \| good	0.1 \| good
2026-04-23T11:00:00.000Z	42 \| good	4.358 \| good	31.067 \| good	44.694 \| good	0.332 \| good	10.183 \| good	0.251 \| good
2026-04-23T12:00:00.000Z	36 \| good	4.275 \| good	27.363 \| good	39.385 \| good	0.382 \| good	17.811 \| good	0.23 \| good
2026-04-23T13:00:00.000Z	36 \| good	4.431 \| good	28.49 \| good	38.882 \| good	0.417 \| good	26.899 \| good	0.347 \| good
2026-04-23T14:00:00.000Z	37 \| good	4.801 \| good	32.867 \| good	39.566 \| good	0.432 \| good	21.137 \| good	0.31 \| good
2026-04-23T15:00:00.000Z	44 \| good	4.268 \| good	26.848 \| good	47.5 \| good	0.516 \| good	15.325 \| good	0.334 \| good
2026-04-23T16:00:00.000Z	45 \| good	3.269 \| good	20.01 \| good	48.773 \| good	0.411 \| good	9.834 \| good	0.217 \| good
2026-04-23T17:00:00.000Z	46 \| good	2.777 \| good	16.766 \| good	49.941 \| good	0.287 \| good	9.504 \| good	0.217 \| good
2026-04-23T18:00:00.000Z	51 \| moderate	2.651 \| good	17.774 \| good	55.388 \| fine	0.412 \| good	8.4 \| good	0.217 \| good
2026-04-23T19:00:00.000Z	47 \| good	2.194 \| good	12.874 \| good	51.31 \| good	0.2 \| good	10.586 \| good	0.278 \| good
2026-04-23T20:00:00.000Z	48 \| good	2.045 \| good	13.866 \| good	51.991 \| good	0.191 \| good	10.369 \| good	0.217 \| good
2026-04-23T21:00:00.000Z	48 \| good	1.824 \| good	13.312 \| good	51.93 \| good	0.34 \| good	11.99 \| good	0.276 \| good
2026-04-23T22:00:00.000Z	47 \| good	1.79 \| good	11.651 \| good	50.959 \| good	0.192 \| good	9.848 \| good	0.31 \| good
2026-04-23T23:00:00.000Z	45 \| good	1.824 \| good	15.103 \| good	48.786 \| good	0.455 \| good	9.41 \| good	0.278 \| good
2026-04-24T00:00:00.000Z	44 \| good	1.576 \| good	8.733 \| good	48.123 \| good	0.429 \| good	7.847 \| good	0.276 \| good
2026-04-24T01:00:00.000Z	43 \| good	1.53 \| good	8.642 \| good	46.25 \| good	0.262 \| good	8.446 \| good	0.276 \| good
2026-04-24T02:00:00.000Z	41 \| good	1.304 \| good	7.358 \| good	44.351 \| good	0.434 \| good	8.337 \| good	0.276 \| good
2026-04-24T03:00:00.000Z	79 \| moderate	24.35 \| fine	106.423 \| fine	39.729 \| good	0.447 \| good	7.405 \| good	0.161 \| good
2026-04-24T04:00:00.000Z	39 \| good	1.322 \| good	6.145 \| good	41.801 \| good	0.349 \| good	5.599 \| good	0.222 \| good
2026-04-24T05:00:00.000Z	38 \| good	1.205 \| good	5.614 \| good	41.153 \| good	0.355 \| good	6.29 \| good	0.228 \| good
2026-04-24T05:00:00.000Z	38 \| good	1.205 \| good	5.614 \| good	41.153 \| good	0.355 \| good	6.29 \| good	0.228 \| good
2026-04-24T06:00:00.000Z	129 \| sensitive	46.747 \| moderate	209.792 \| moderate	42.121 \| good	0.462 \| good	7.367 \| good	0.162 \| good
2026-04-24T07:00:00.000Z	105 \| sensitive	36.919 \| moderate	161.687 \| moderate	38.654 \| good	0.409 \| good	6.31 \| good	0.155 \| good
2026-04-24T08:00:00.000Z	81 \| moderate	24.907 \| fine	109.256 \| fine	37.616 \| good	0.355 \| good	5.254 \| good	0.149 \| good
2026-04-24T09:00:00.000Z	60 \| moderate	14.287 \| fine	64.07 \| fine	36.235 \| good	0.302 \| good	4.198 \| good	0.142 \| good
2026-04-24T10:00:00.000Z	52 \| moderate	9.666 \| good	43.074 \| good	34.443 \| good	0.291 \| good	4.067 \| good	0.14 \| good
2026-04-24T11:00:00.000Z	44 \| good	7.618 \| good	33.508 \| good	27.284 \| good	0.281 \| good	3.936 \| good	0.138 \| good
2026-04-24T12:00:00.000Z	44 \| good	7.523 \| good	33.012 \| good	21.145 \| good	0.27 \| good	3.805 \| good	0.136 \| good
2026-04-24T13:00:00.000Z	44 \| good	7.648 \| good	33.289 \| good	27.485 \| good	0.323 \| good	3.533 \| good	0.138 \| good
2026-04-24T14:00:00.000Z	44 \| good	7.532 \| good	33.426 \| good	33.566 \| good	0.376 \| good	3.26 \| good	0.14 \| good
2026-04-24T15:00:00.000Z	49 \| good	8.586 \| good	37.66 \| good	39.098 \| good	0.429 \| good	2.987 \| good	0.142 \| good
2026-04-24T16:00:00.000Z	44 \| good	8.117 \| good	35.667 \| good	45.623 \| good	0.374 \| good	2.287 \| good	0.134 \| good
2026-04-24T17:00:00.000Z	47 \| good	5.972 \| good	26.6 \| good	50.854 \| good	0.318 \| good	1.588 \| good	0.125 \| good
2026-04-24T18:00:00.000Z	49 \| good	4.566 \| good	19.934 \| good	53.252 \| good	0.262 \| good	0.889 \| good	0.116 \| good
2026-04-24T19:00:00.000Z	49 \| good	4.351 \| good	19.162 \| good	52.811 \| good	0.24 \| good	0.765 \| good	0.115 \| good
2026-04-24T20:00:00.000Z	51 \| moderate	3.737 \| good	16.234 \| good	54.984 \| good	0.217 \| good	0.642 \| good	0.113 \| good
2026-04-24T21:00:00.000Z	61 \| moderate	3.898 \| good	16.901 \| good	58.336 \| fine	0.195 \| good	0.518 \| good	0.112 \| good
2026-04-24T22:00:00.000Z	67 \| moderate	4.314 \| good	18.901 \| good	59.907 \| fine	0.187 \| good	0.592 \| good	0.112 \| good
2026-04-24T23:00:00.000Z	77 \| moderate	2.233 \| good	8.999 \| good	63.208 \| fine	0.179 \| good	0.666 \| good	0.113 \| good
2026-04-25T00:00:00.000Z	67 \| moderate	2.889 \| good	11.993 \| good	60.283 \| fine	0.171 \| good	0.74 \| good	0.113 \| good
2026-04-25T01:00:00.000Z	58 \| moderate	2.291 \| good	9.122 \| good	57.099 \| fine	0.242 \| good	2.779 \| good	0.127 \| good
2026-04-25T02:00:00.000Z	44 \| good	2.804 \| good	11.785 \| good	47.297 \| good	0.313 \| good	4.817 \| good	0.141 \| good
2026-04-25T03:00:00.000Z	52 \| moderate	9.936 \| good	43.941 \| good	41.642 \| good	0.383 \| good	6.856 \| good	0.154 \| good
2026-04-25T04:00:00.000Z	84 \| moderate	26.682 \| fine	116.08 \| fine	40.744 \| good	0.395 \| good	7.737 \| good	0.161 \| good
2026-04-25T05:00:00.000Z	107 \| sensitive	37.755 \| moderate	167.11 \| moderate	36.553 \| good	0.406 \| good	8.619 \| good	0.167 \| good
2026-04-25T06:00:00.000Z	97 \| moderate	34.069 \| fine	147.608 \| fine	35.293 \| good	0.417 \| good	9.501 \| good	0.173 \| good
2026-04-25T07:00:00.000Z	34 \| good	2.585 \| good	10.536 \| good	37.147 \| good	0.386 \| good	7.382 \| good	0.163 \| good
2026-04-25T08:00:00.000Z	34 \| good	2.362 \| good	9.947 \| good	37.45 \| good	0.355 \| good	5.264 \| good	0.152 \| good
2026-04-25T09:00:00.000Z	39 \| good	2.936 \| good	11.975 \| good	41.54 \| good	0.324 \| good	3.145 \| good	0.141 \| good
2026-04-25T10:00:00.000Z	39 \| good	2.532 \| good	10.142 \| good	41.636 \| good	0.377 \| good	3.256 \| good	0.142 \| good
2026-04-25T11:00:00.000Z	35 \| good	3.086 \| good	12.371 \| good	38.147 \| good	0.43 \| good	3.367 \| good	0.142 \| good
2026-04-25T12:00:00.000Z	31 \| good	4.594 \| good	19.922 \| good	33.909 \| good	0.484 \| good	3.478 \| good	0.142 \| good
2026-04-25T13:00:00.000Z	33 \| good	5.635 \| good	24.095 \| good	35.558 \| good	0.502 \| good	3.206 \| good	0.142 \| good
2026-04-25T14:00:00.000Z	33 \| good	6.147 \| good	27.204 \| good	36.284 \| good	0.52 \| good	2.935 \| good	0.143 \| good
2026-04-25T15:00:00.000Z	38 \| good	7.329 \| good	32.105 \| good	37.022 \| good	0.538 \| good	2.663 \| good	0.143 \| good
2026-04-25T16:00:00.000Z	44 \| good	8.289 \| good	36.204 \| good	39.846 \| good	0.526 \| good	2.357 \| good	0.141 \| good
2026-04-25T17:00:00.000Z	49 \| good	9.311 \| good	41.197 \| good	44.308 \| good	0.513 \| good	2.052 \| good	0.139 \| good
2026-04-25T18:00:00.000Z	52 \| moderate	9.657 \| good	43.033 \| good	47.202 \| good	0.501 \| good	1.746 \| good	0.136 \| good
2026-04-25T19:00:00.000Z	52 \| moderate	9.789 \| good	43.303 \| good	48.231 \| good	0.44 \| good	1.519 \| good	0.133 \| good
2026-04-25T20:00:00.000Z	52 \| moderate	9.899 \| good	44.001 \| good	52.526 \| good	0.38 \| good	1.292 \| good	0.129 \| good
2026-04-25T21:00:00.000Z	54 \| moderate	9.377 \| good	41.796 \| good	56.48 \| fine	0.32 \| good	1.065 \| good	0.126 \| good
2026-04-25T22:00:00.000Z	61 \| moderate	7.704 \| good	33.901 \| good	57.71 \| fine	0.306 \| good	1.175 \| good	0.125 \| good
2026-04-25T23:00:00.000Z	58 \| moderate	5.179 \| good	22.776 \| good	57.419 \| fine	0.293 \| good	1.286 \| good	0.125 \| good
2026-04-26T00:00:00.000Z	49 \| good	9.278 \| good	41.156 \| good	52.32 \| good	0.279 \| good	1.396 \| good	0.124 \| good
2026-04-26T01:00:00.000Z	50 \| good	5.613 \| good	24.027 \| good	53.598 \| good	0.371 \| good	3.392 \| good	0.138 \| good
2026-04-26T02:00:00.000Z	39 \| good	5.467 \| good	23.135 \| good	42.022 \| good	0.463 \| good	5.388 \| good	0.152 \| good
2026-04-26T03:00:00.000Z	36 \| good	5.786 \| good	25.148 \| good	39.175 \| good	0.555 \| good	7.384 \| good	0.165 \| good
2026-04-26T04:00:00.000Z	39 \| good	3.989 \| good	17.345 \| good	41.845 \| good	0.602 \| good	8.258 \| good	0.172 \| good
2026-04-26T05:00:00.000Z	41 \| good	3.766 \| good	16.346 \| good	43.941 \| good	0.649 \| good	9.133 \| good	0.178 \| good

Current air quality index in Four Square Mile, Colorado today

Common air pollutants in Four Square Mile, Colorado

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Four Square Mile, Colorado air quality forecast and history

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Real-time air quality map: Monitor AQI near Four Square Mile, Colorado

Air quality in nearby cities

Cherry Creek, Colorado

Aurora, Colorado

Greenwood Village, Colorado

Englewood, Colorado

Centennial, Colorado

Denver, Colorado

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Frequently asked questions

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What is the PM2.5 concentration in Four Square Mile, Colorado right now?

What is the current level of PM10 in Four Square Mile, Colorado?

What is the current level of carbon monoxide (CO) in Four Square Mile, Colorado?

What is the current level of sulfur dioxide (SO2) in Four Square Mile, Colorado?

What is the current level of ozone (O3) in Four Square Mile, Colorado?

What is the current level of nitrogen dioxide (NO2) in Four Square Mile, 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 Four Square Mile, Colorado right now?

What is the current level of PM₁₀ in Four Square Mile, Colorado?

What is the current level of sulfur dioxide (SO₂) in Four Square Mile, Colorado?

What is the current level of ozone (O₃) in Four Square Mile, Colorado?

What is the current level of nitrogen dioxide (NO₂) in Four Square Mile, Colorado?