What is the PM10 level in Boulder, Colorado at the moment?

The PM10 concentration in Boulder, Colorado is 16.019 μg/m3 at the moment.

What is the sulfur dioxide (SO2) level in Boulder, Colorado at the moment?

Currently, Boulder, Colorado has a sulfur dioxide (SO2) concentration of 0.749 ppb.

What is the ozone (O3) level in Boulder, Colorado at the moment?

The current ozone (O3) level in Boulder, Colorado at the moment is 49.746 ppm.

What is the nitrogen dioxide (NO2) level in Boulder, Colorado at the moment?

Nitrogen dioxide (NO2) level in Boulder, Colorado at the moment is 9.297 ppb.

Live air quality index in Boulder, Colorado today

Name: Live air pollution levels in Boulder, Colorado today
Creator: Ambee

Stay updated with real-time air quality in Boulder, 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

Boulder, Colorado

Last updated: ... (Local time)

Major air pollutants in Boulder, Colorado

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

6.89 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

21.02 μg/m³

155

255

425

605+

Ozone (O₃)

54.63 ppb

201

201+

Sulfur Dioxide (SO₂)

0.64 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

8.37 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.17 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Boulder, Colorado

Get Live Pollen Counts

Boulder, Colorado

Scroll To Air Quality Map

Track live Boulder, Colorado air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-19T22:00:00.000Z	67 \| moderate	8.396 \| good	19.084 \| good	60.167 \| fine	0.696 \| good	6.054 \| good	0.188 \| good
2025-07-19T23:00:00.000Z	80 \| moderate	8.192 \| good	19.99 \| good	63.593 \| fine	0.72 \| good	5.057 \| good	0.145 \| good
2025-07-20T00:00:00.000Z	64 \| moderate	8.496 \| good	22.989 \| good	58.795 \| fine	0.532 \| good	3.493 \| good	0.128 \| good
2025-07-20T01:00:00.000Z	51 \| moderate	8.679 \| good	24.953 \| good	54.775 \| good	0.636 \| good	9.154 \| good	0.234 \| good
2025-07-20T02:00:00.000Z	44 \| good	7.685 \| good	22.98 \| good	47.281 \| good	0.603 \| good	15.194 \| good	0.262 \| good
2025-07-20T03:00:00.000Z	39 \| good	7.392 \| good	21.996 \| good	41.821 \| good	0.604 \| good	22.64 \| good	0.436 \| good
2025-07-20T04:00:00.000Z	49 \| good	7.793 \| good	22.006 \| good	53.14 \| good	0.603 \| good	22.856 \| good	0.382 \| good
2025-07-20T05:00:00.000Z	44 \| good	8.286 \| good	22.987 \| good	47.716 \| good	0.675 \| good	22.489 \| good	0.496 \| good
2025-07-20T06:00:00.000Z	49 \| good	8.883 \| good	21.972 \| good	50.062 \| good	0.578 \| good	23.109 \| good	0.455 \| good
2025-07-20T07:00:00.000Z	49 \| good	8.987 \| good	21.984 \| good	48.605 \| good	0.61 \| good	21.762 \| good	0.352 \| good
2025-07-20T08:00:00.000Z	44 \| good	7.991 \| good	19.012 \| good	42.924 \| good	0.705 \| good	22.589 \| good	0.369 \| good
2025-07-20T09:00:00.000Z	41 \| good	6.091 \| good	15.006 \| good	44.056 \| good	0.705 \| good	22.923 \| good	0.457 \| good
2025-07-20T10:00:00.000Z	44 \| good	5.093 \| good	12.012 \| good	46.808 \| good	0.734 \| good	17.424 \| good	0.312 \| good
2025-07-20T11:00:00.000Z	44 \| good	4.706 \| good	11.031 \| good	48.264 \| good	0.652 \| good	7.477 \| good	0.28 \| good
2025-07-20T12:00:00.000Z	45 \| good	4.712 \| good	11.083 \| good	49.298 \| good	0.677 \| good	8 \| good	0.232 \| good
2025-07-20T13:00:00.000Z	46 \| good	4.711 \| good	11.089 \| good	49.599 \| good	0.837 \| good	7.107 \| good	0.188 \| good
2025-07-20T14:00:00.000Z	42 \| good	4.712 \| good	12.059 \| good	45.385 \| good	0.947 \| good	9.85 \| good	0.191 \| good
2025-07-20T15:00:00.000Z	44 \| good	4.706 \| good	13.057 \| good	47.261 \| good	1.167 \| good	9.289 \| good	0.16 \| good
2025-07-20T16:00:00.000Z	45 \| good	4.905 \| good	14.05 \| good	48.764 \| good	0.879 \| good	6.487 \| good	0.16 \| good
2025-07-20T17:00:00.000Z	49 \| good	5.1 \| good	14.023 \| good	53.168 \| good	0.788 \| good	4.58 \| good	0.1 \| good
2025-07-20T18:00:00.000Z	50 \| good	5.201 \| good	14.04 \| good	53.879 \| good	0.638 \| good	3.269 \| good	0.1 \| good
2025-07-20T19:00:00.000Z	58 \| moderate	5.293 \| good	13.998 \| good	56.747 \| fine	0.607 \| good	4.395 \| good	0.128 \| good
2025-07-20T20:00:00.000Z	51 \| moderate	5.398 \| good	14.006 \| good	55.102 \| fine	0.574 \| good	6.704 \| good	0.185 \| good
2025-07-20T21:00:00.000Z	51 \| moderate	5.494 \| good	14.998 \| good	55.469 \| fine	0.573 \| good	7.413 \| good	0.185 \| good
2025-07-20T22:00:00.000Z	54 \| moderate	5.494 \| good	15.002 \| good	56.061 \| fine	0.604 \| good	6.409 \| good	0.185 \| good
2025-07-20T23:00:00.000Z	61 \| moderate	5.296 \| good	14.001 \| good	57.864 \| fine	0.636 \| good	8.221 \| good	0.157 \| good
2025-07-21T00:00:00.000Z	67 \| moderate	5.101 \| good	13.021 \| good	60.156 \| fine	0.635 \| good	8.298 \| good	0.157 \| good
2025-07-21T01:00:00.000Z	61 \| moderate	4.999 \| good	13.002 \| good	57.651 \| fine	0.604 \| good	6.971 \| good	0.185 \| good
2025-07-21T02:00:00.000Z	47 \| good	4.997 \| good	13.014 \| good	50.972 \| good	0.508 \| good	5.641 \| good	0.204 \| good
2025-07-21T03:00:00.000Z	44 \| good	4.798 \| good	13.017 \| good	47.5 \| good	0.509 \| good	7.333 \| good	0.249 \| good
2025-07-21T04:00:00.000Z	44 \| good	4.8 \| good	12.019 \| good	47.111 \| good	0.509 \| good	11.356 \| good	0.27 \| good
2025-07-21T05:00:00.000Z	41 \| good	4.701 \| good	12.019 \| good	43.599 \| good	0.515 \| good	11.17 \| good	0.286 \| good
2025-07-21T06:00:00.000Z	41 \| good	4.701 \| good	12.033 \| good	44.011 \| good	0.664 \| good	10.025 \| good	0.286 \| good
2025-07-21T07:00:00.000Z	33 \| good	4.798 \| good	12.021 \| good	35.752 \| good	0.752 \| good	15.5 \| good	0.257 \| good
2025-07-21T08:00:00.000Z	28 \| good	4.894 \| good	12.014 \| good	29.522 \| good	0.632 \| good	9.562 \| good	0.192 \| good
2025-07-21T09:00:00.000Z	37 \| good	4.993 \| good	12.004 \| good	40.018 \| good	0.727 \| good	10.364 \| good	0.177 \| good
2025-07-21T10:00:00.000Z	39 \| good	5.294 \| good	12.005 \| good	42.175 \| good	0.545 \| good	10.135 \| good	0.16 \| good
2025-07-21T11:00:00.000Z	39 \| good	5.399 \| good	12.044 \| good	42.462 \| good	0.546 \| good	15.257 \| good	0.175 \| good
2025-07-21T12:00:00.000Z	40 \| good	5.597 \| good	14.005 \| good	43.12 \| good	0.693 \| good	22.568 \| good	0.236 \| good
2025-07-21T13:00:00.000Z	38 \| good	5.997 \| good	17.993 \| good	40.957 \| good	0.847 \| good	21.543 \| good	0.334 \| good
2025-07-21T14:00:00.000Z	38 \| good	6.797 \| good	21.025 \| good	35.959 \| good	1.077 \| good	19.899 \| good	0.369 \| good
2025-07-21T15:00:00.000Z	39 \| good	7.291 \| good	26.984 \| good	41.645 \| good	1.623 \| good	15.894 \| good	0.312 \| good
2025-07-21T16:00:00.000Z	44 \| good	7.503 \| good	29.077 \| good	44.612 \| good	1.994 \| good	12.831 \| good	0.296 \| good
2025-07-21T17:00:00.000Z	44 \| good	7.701 \| good	29.022 \| good	48.215 \| good	0.902 \| good	14.233 \| good	0.22 \| good
2025-07-21T18:00:00.000Z	61 \| moderate	7.798 \| good	29.026 \| good	58.366 \| fine	0.89 \| good	13.392 \| good	0.192 \| good
2025-07-21T19:00:00.000Z	74 \| moderate	7.601 \| good	24.035 \| good	61.7 \| fine	0.83 \| good	8.401 \| good	0.192 \| good
2025-07-21T20:00:00.000Z	58 \| moderate	7.295 \| good	22.005 \| good	57.495 \| fine	0.671 \| good	8.102 \| good	0.145 \| good
2025-07-21T21:00:00.000Z	51 \| moderate	6.893 \| good	21.018 \| good	54.627 \| good	0.64 \| good	8.372 \| good	0.174 \| good
2025-07-21T21:00:00.000Z	51 \| moderate	6.893 \| good	21.018 \| good	54.627 \| good	0.64 \| good	8.372 \| good	0.174 \| good
2025-07-19T18:00:00.000Z	41 \| good	7.262 \| good	32.168 \| good	43.877 \| good	0.292 \| good	0.845 \| good	0.119 \| good
2025-07-19T19:00:00.000Z	79 \| moderate	24.396 \| fine	106.184 \| fine	46.206 \| good	0.245 \| good	0.811 \| good	0.113 \| good
2025-07-19T20:00:00.000Z	82 \| moderate	25.569 \| fine	111.319 \| fine	50.874 \| good	0.199 \| good	0.777 \| good	0.108 \| good
2025-07-19T21:00:00.000Z	67 \| moderate	17.612 \| fine	77.887 \| fine	53.851 \| good	0.152 \| good	0.744 \| good	0.103 \| good
2025-07-19T22:00:00.000Z	66 \| moderate	16.51 \| fine	73.209 \| fine	58.468 \| fine	0.172 \| good	1.008 \| good	0.105 \| good
2025-07-19T23:00:00.000Z	64 \| moderate	16.044 \| fine	71.334 \| fine	56.446 \| fine	0.192 \| good	1.272 \| good	0.107 \| good
2025-07-20T00:00:00.000Z	66 \| moderate	16.975 \| fine	75.288 \| fine	54.36 \| good	0.212 \| good	1.536 \| good	0.109 \| good
2025-07-20T01:00:00.000Z	50 \| good	7.544 \| good	33.334 \| good	53.662 \| good	0.291 \| good	3.982 \| good	0.134 \| good
2025-07-20T02:00:00.000Z	64 \| moderate	5.785 \| good	25.38 \| good	58.752 \| fine	0.37 \| good	6.428 \| good	0.159 \| good
2025-07-20T03:00:00.000Z	58 \| moderate	13.34 \| fine	59.974 \| fine	49.372 \| good	0.448 \| good	8.874 \| good	0.184 \| good
2025-07-20T04:00:00.000Z	67 \| moderate	18.316 \| fine	80.953 \| fine	47.019 \| good	0.426 \| good	9.792 \| good	0.193 \| good
2025-07-20T05:00:00.000Z	54 \| moderate	10.997 \| good	48.884 \| good	42.717 \| good	0.404 \| good	10.709 \| good	0.201 \| good
2025-07-20T06:00:00.000Z	39 \| good	3.37 \| good	14.54 \| good	41.671 \| good	0.382 \| good	11.627 \| good	0.21 \| good
2025-07-20T07:00:00.000Z	38 \| good	1.913 \| good	7.644 \| good	40.536 \| good	0.329 \| good	11.314 \| good	0.205 \| good
2025-07-20T08:00:00.000Z	37 \| good	0.586 \| good	2.399 \| good	39.729 \| good	0.276 \| good	11.001 \| good	0.2 \| good
2025-07-20T09:00:00.000Z	36 \| good	0.919 \| good	3.657 \| good	38.514 \| good	0.224 \| good	10.688 \| good	0.195 \| good
2025-07-20T10:00:00.000Z	35 \| good	0.971 \| good	3.691 \| good	37.78 \| good	0.206 \| good	9.14 \| good	0.178 \| good
2025-07-20T11:00:00.000Z	36 \| good	0.619 \| good	2.278 \| good	39.269 \| good	0.188 \| good	7.592 \| good	0.161 \| good
2025-07-20T12:00:00.000Z	33 \| good	0.416 \| good	1.257 \| good	36.413 \| good	0.171 \| good	6.043 \| good	0.144 \| good
2025-07-20T13:00:00.000Z	36 \| good	1.923 \| good	7.787 \| good	39.158 \| good	0.208 \| good	5.026 \| good	0.141 \| good
2025-07-20T14:00:00.000Z	39 \| good	5.014 \| good	21.559 \| good	42.161 \| good	0.246 \| good	4.009 \| good	0.139 \| good
2025-07-20T15:00:00.000Z	42 \| good	6.82 \| good	30.325 \| good	44.877 \| good	0.284 \| good	2.992 \| good	0.136 \| good
2025-07-20T16:00:00.000Z	43 \| good	6.836 \| good	30.295 \| good	46.295 \| good	0.277 \| good	2.247 \| good	0.124 \| good
2025-07-20T17:00:00.000Z	44 \| good	6.706 \| good	29.795 \| good	47.618 \| good	0.27 \| good	1.503 \| good	0.112 \| good
2025-07-20T18:00:00.000Z	45 \| good	5.986 \| good	26.618 \| good	48.564 \| good	0.264 \| good	0.758 \| good	0.099 \| good
2025-07-20T19:00:00.000Z	44 \| good	6.045 \| good	26.843 \| good	48.31 \| good	0.238 \| good	0.708 \| good	0.098 \| good
2025-07-20T20:00:00.000Z	45 \| good	3.51 \| good	15.676 \| good	49.324 \| good	0.213 \| good	0.658 \| good	0.097 \| good
2025-07-20T21:00:00.000Z	47 \| good	1.678 \| good	6.774 \| good	50.615 \| good	0.188 \| good	0.609 \| good	0.095 \| good
2025-07-20T22:00:00.000Z	50 \| good	1.379 \| good	5.532 \| good	53.618 \| good	0.218 \| good	1.266 \| good	0.102 \| good
2025-07-20T23:00:00.000Z	61 \| moderate	1.54 \| good	6.404 \| good	57.544 \| fine	0.247 \| good	1.924 \| good	0.108 \| good
2025-07-21T00:00:00.000Z	61 \| moderate	1.14 \| good	4.593 \| good	57.851 \| fine	0.277 \| good	2.582 \| good	0.114 \| good
2025-07-21T01:00:00.000Z	47 \| good	0.822 \| good	3.181 \| good	51.45 \| good	0.359 \| good	4.998 \| good	0.137 \| good
2025-07-21T02:00:00.000Z	47 \| good	2.467 \| good	9.947 \| good	50.687 \| good	0.44 \| good	7.414 \| good	0.16 \| good
2025-07-21T03:00:00.000Z	40 \| good	3.147 \| good	13.561 \| good	43.153 \| good	0.522 \| good	9.83 \| good	0.182 \| good
2025-07-21T04:00:00.000Z	39 \| good	2.256 \| good	9.335 \| good	41.554 \| good	0.479 \| good	11.404 \| good	0.2 \| good
2025-07-21T05:00:00.000Z	36 \| good	1.396 \| good	5.546 \| good	38.827 \| good	0.436 \| good	12.978 \| good	0.218 \| good
2025-07-21T06:00:00.000Z	33 \| good	1.027 \| good	4.337 \| good	36.21 \| good	0.393 \| good	14.553 \| good	0.235 \| good
2025-07-21T07:00:00.000Z	32 \| good	0.543 \| good	1.847 \| good	34.604 \| good	0.342 \| good	13.878 \| good	0.23 \| good
2025-07-21T08:00:00.000Z	33 \| good	0.307 \| good	1.243 \| good	36.22 \| good	0.292 \| good	13.202 \| good	0.225 \| good
2025-07-21T09:00:00.000Z	32 \| good	0.543 \| good	2.009 \| good	35.361 \| good	0.242 \| good	12.527 \| good	0.22 \| good
2025-07-21T10:00:00.000Z	32 \| good	0.805 \| good	2.917 \| good	34.873 \| good	0.226 \| good	10.684 \| good	0.2 \| good
2025-07-21T11:00:00.000Z	32 \| good	0.576 \| good	2.031 \| good	35.416 \| good	0.209 \| good	8.841 \| good	0.18 \| good
2025-07-21T12:00:00.000Z	31 \| good	2.41 \| good	9.934 \| good	34.184 \| good	0.193 \| good	6.998 \| good	0.159 \| good
2025-07-21T13:00:00.000Z	32 \| good	4.76 \| good	20.578 \| good	34.659 \| good	0.231 \| good	5.798 \| good	0.156 \| good
2025-07-21T14:00:00.000Z	34 \| good	5.449 \| good	23.529 \| good	37.088 \| good	0.269 \| good	4.599 \| good	0.152 \| good
2025-07-21T15:00:00.000Z	38 \| good	4.674 \| good	20.274 \| good	41.314 \| good	0.307 \| good	3.399 \| good	0.149 \| good
2025-07-21T16:00:00.000Z	42 \| good	6.016 \| good	26.437 \| good	45.377 \| good	0.324 \| good	2.554 \| good	0.136 \| good
2025-07-21T17:00:00.000Z	45 \| good	6.76 \| good	30.016 \| good	49.039 \| good	0.342 \| good	1.709 \| good	0.123 \| good

Boulder

Get reliable air quality data to drive your business

Boulder, Colorado air quality map: Stay updated on AQI near you

0.25ppm

How accurate is Colorado, USA air quality data?

Air quality and pollutant data for Colorado, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for Boulder, Colorado?

The air quality information for Boulder, Colorado is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Boulder, Colorado at its worst?

In the past 24 hours, the air quality in Boulder, Colorado was at its worst at 09:00:00 on 2025-07-18.

When did Boulder, Colorado experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Boulder, Colorado was observed at 02:00:00 on 2025-07-19.

What is the AQI in Boulder, Colorado right now?

As of now, the AQI in Boulder, Colorado is 46, indicating Good conditions.

What is the most common type of pollution in Boulder, Colorado?

Boulder, Colorado air has the highest levels of O3.

What should I do in case of poor air quality in Boulder, Colorado?

Poor air quality in Boulder, Colorado means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in Boulder, Colorado at the moment?

PM_2.5 levels in Boulder, Colorado are currently 7.906 μg/m³.

What is the PM₁₀ level in Boulder, Colorado at the moment?

The PM₁₀ concentration in Boulder, Colorado is 16.019 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Boulder, Colorado at the moment?

The current carbon monoxide (CO) concentration in Boulder, Colorado is 0.192 ppm.

What is the sulfur dioxide (SO₂) level in Boulder, Colorado at the moment?

Currently, Boulder, Colorado has a sulfur dioxide (SO₂) concentration of 0.749 ppb.

What is the ozone (O₃) level in Boulder, Colorado at the moment?

The current ozone (O₃) level in Boulder, Colorado at the moment is 49.746 ppm.

What is the nitrogen dioxide (NO₂) level in Boulder, Colorado at the moment?

Nitrogen dioxide (NO₂) level in Boulder, Colorado at the moment is 9.297 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-19T22:00:00.000Z	67 \| moderate	8.396 \| good	19.084 \| good	60.167 \| fine	0.696 \| good	6.054 \| good	0.188 \| good
2025-07-19T23:00:00.000Z	80 \| moderate	8.192 \| good	19.99 \| good	63.593 \| fine	0.72 \| good	5.057 \| good	0.145 \| good
2025-07-20T00:00:00.000Z	64 \| moderate	8.496 \| good	22.989 \| good	58.795 \| fine	0.532 \| good	3.493 \| good	0.128 \| good
2025-07-20T01:00:00.000Z	51 \| moderate	8.679 \| good	24.953 \| good	54.775 \| good	0.636 \| good	9.154 \| good	0.234 \| good
2025-07-20T02:00:00.000Z	44 \| good	7.685 \| good	22.98 \| good	47.281 \| good	0.603 \| good	15.194 \| good	0.262 \| good
2025-07-20T03:00:00.000Z	39 \| good	7.392 \| good	21.996 \| good	41.821 \| good	0.604 \| good	22.64 \| good	0.436 \| good
2025-07-20T04:00:00.000Z	49 \| good	7.793 \| good	22.006 \| good	53.14 \| good	0.603 \| good	22.856 \| good	0.382 \| good
2025-07-20T05:00:00.000Z	44 \| good	8.286 \| good	22.987 \| good	47.716 \| good	0.675 \| good	22.489 \| good	0.496 \| good
2025-07-20T06:00:00.000Z	49 \| good	8.883 \| good	21.972 \| good	50.062 \| good	0.578 \| good	23.109 \| good	0.455 \| good
2025-07-20T07:00:00.000Z	49 \| good	8.987 \| good	21.984 \| good	48.605 \| good	0.61 \| good	21.762 \| good	0.352 \| good
2025-07-20T08:00:00.000Z	44 \| good	7.991 \| good	19.012 \| good	42.924 \| good	0.705 \| good	22.589 \| good	0.369 \| good
2025-07-20T09:00:00.000Z	41 \| good	6.091 \| good	15.006 \| good	44.056 \| good	0.705 \| good	22.923 \| good	0.457 \| good
2025-07-20T10:00:00.000Z	44 \| good	5.093 \| good	12.012 \| good	46.808 \| good	0.734 \| good	17.424 \| good	0.312 \| good
2025-07-20T11:00:00.000Z	44 \| good	4.706 \| good	11.031 \| good	48.264 \| good	0.652 \| good	7.477 \| good	0.28 \| good
2025-07-20T12:00:00.000Z	45 \| good	4.712 \| good	11.083 \| good	49.298 \| good	0.677 \| good	8 \| good	0.232 \| good
2025-07-20T13:00:00.000Z	46 \| good	4.711 \| good	11.089 \| good	49.599 \| good	0.837 \| good	7.107 \| good	0.188 \| good
2025-07-20T14:00:00.000Z	42 \| good	4.712 \| good	12.059 \| good	45.385 \| good	0.947 \| good	9.85 \| good	0.191 \| good
2025-07-20T15:00:00.000Z	44 \| good	4.706 \| good	13.057 \| good	47.261 \| good	1.167 \| good	9.289 \| good	0.16 \| good
2025-07-20T16:00:00.000Z	45 \| good	4.905 \| good	14.05 \| good	48.764 \| good	0.879 \| good	6.487 \| good	0.16 \| good
2025-07-20T17:00:00.000Z	49 \| good	5.1 \| good	14.023 \| good	53.168 \| good	0.788 \| good	4.58 \| good	0.1 \| good
2025-07-20T18:00:00.000Z	50 \| good	5.201 \| good	14.04 \| good	53.879 \| good	0.638 \| good	3.269 \| good	0.1 \| good
2025-07-20T19:00:00.000Z	58 \| moderate	5.293 \| good	13.998 \| good	56.747 \| fine	0.607 \| good	4.395 \| good	0.128 \| good
2025-07-20T20:00:00.000Z	51 \| moderate	5.398 \| good	14.006 \| good	55.102 \| fine	0.574 \| good	6.704 \| good	0.185 \| good
2025-07-20T21:00:00.000Z	51 \| moderate	5.494 \| good	14.998 \| good	55.469 \| fine	0.573 \| good	7.413 \| good	0.185 \| good
2025-07-20T22:00:00.000Z	54 \| moderate	5.494 \| good	15.002 \| good	56.061 \| fine	0.604 \| good	6.409 \| good	0.185 \| good
2025-07-20T23:00:00.000Z	61 \| moderate	5.296 \| good	14.001 \| good	57.864 \| fine	0.636 \| good	8.221 \| good	0.157 \| good
2025-07-21T00:00:00.000Z	67 \| moderate	5.101 \| good	13.021 \| good	60.156 \| fine	0.635 \| good	8.298 \| good	0.157 \| good
2025-07-21T01:00:00.000Z	61 \| moderate	4.999 \| good	13.002 \| good	57.651 \| fine	0.604 \| good	6.971 \| good	0.185 \| good
2025-07-21T02:00:00.000Z	47 \| good	4.997 \| good	13.014 \| good	50.972 \| good	0.508 \| good	5.641 \| good	0.204 \| good
2025-07-21T03:00:00.000Z	44 \| good	4.798 \| good	13.017 \| good	47.5 \| good	0.509 \| good	7.333 \| good	0.249 \| good
2025-07-21T04:00:00.000Z	44 \| good	4.8 \| good	12.019 \| good	47.111 \| good	0.509 \| good	11.356 \| good	0.27 \| good
2025-07-21T05:00:00.000Z	41 \| good	4.701 \| good	12.019 \| good	43.599 \| good	0.515 \| good	11.17 \| good	0.286 \| good
2025-07-21T06:00:00.000Z	41 \| good	4.701 \| good	12.033 \| good	44.011 \| good	0.664 \| good	10.025 \| good	0.286 \| good
2025-07-21T07:00:00.000Z	33 \| good	4.798 \| good	12.021 \| good	35.752 \| good	0.752 \| good	15.5 \| good	0.257 \| good
2025-07-21T08:00:00.000Z	28 \| good	4.894 \| good	12.014 \| good	29.522 \| good	0.632 \| good	9.562 \| good	0.192 \| good
2025-07-21T09:00:00.000Z	37 \| good	4.993 \| good	12.004 \| good	40.018 \| good	0.727 \| good	10.364 \| good	0.177 \| good
2025-07-21T10:00:00.000Z	39 \| good	5.294 \| good	12.005 \| good	42.175 \| good	0.545 \| good	10.135 \| good	0.16 \| good
2025-07-21T11:00:00.000Z	39 \| good	5.399 \| good	12.044 \| good	42.462 \| good	0.546 \| good	15.257 \| good	0.175 \| good
2025-07-21T12:00:00.000Z	40 \| good	5.597 \| good	14.005 \| good	43.12 \| good	0.693 \| good	22.568 \| good	0.236 \| good
2025-07-21T13:00:00.000Z	38 \| good	5.997 \| good	17.993 \| good	40.957 \| good	0.847 \| good	21.543 \| good	0.334 \| good
2025-07-21T14:00:00.000Z	38 \| good	6.797 \| good	21.025 \| good	35.959 \| good	1.077 \| good	19.899 \| good	0.369 \| good
2025-07-21T15:00:00.000Z	39 \| good	7.291 \| good	26.984 \| good	41.645 \| good	1.623 \| good	15.894 \| good	0.312 \| good
2025-07-21T16:00:00.000Z	44 \| good	7.503 \| good	29.077 \| good	44.612 \| good	1.994 \| good	12.831 \| good	0.296 \| good
2025-07-21T17:00:00.000Z	44 \| good	7.701 \| good	29.022 \| good	48.215 \| good	0.902 \| good	14.233 \| good	0.22 \| good
2025-07-21T18:00:00.000Z	61 \| moderate	7.798 \| good	29.026 \| good	58.366 \| fine	0.89 \| good	13.392 \| good	0.192 \| good
2025-07-21T19:00:00.000Z	74 \| moderate	7.601 \| good	24.035 \| good	61.7 \| fine	0.83 \| good	8.401 \| good	0.192 \| good
2025-07-21T20:00:00.000Z	58 \| moderate	7.295 \| good	22.005 \| good	57.495 \| fine	0.671 \| good	8.102 \| good	0.145 \| good
2025-07-21T21:00:00.000Z	51 \| moderate	6.893 \| good	21.018 \| good	54.627 \| good	0.64 \| good	8.372 \| good	0.174 \| good
2025-07-21T21:00:00.000Z	51 \| moderate	6.893 \| good	21.018 \| good	54.627 \| good	0.64 \| good	8.372 \| good	0.174 \| good
2025-07-19T18:00:00.000Z	41 \| good	7.262 \| good	32.168 \| good	43.877 \| good	0.292 \| good	0.845 \| good	0.119 \| good
2025-07-19T19:00:00.000Z	79 \| moderate	24.396 \| fine	106.184 \| fine	46.206 \| good	0.245 \| good	0.811 \| good	0.113 \| good
2025-07-19T20:00:00.000Z	82 \| moderate	25.569 \| fine	111.319 \| fine	50.874 \| good	0.199 \| good	0.777 \| good	0.108 \| good
2025-07-19T21:00:00.000Z	67 \| moderate	17.612 \| fine	77.887 \| fine	53.851 \| good	0.152 \| good	0.744 \| good	0.103 \| good
2025-07-19T22:00:00.000Z	66 \| moderate	16.51 \| fine	73.209 \| fine	58.468 \| fine	0.172 \| good	1.008 \| good	0.105 \| good
2025-07-19T23:00:00.000Z	64 \| moderate	16.044 \| fine	71.334 \| fine	56.446 \| fine	0.192 \| good	1.272 \| good	0.107 \| good
2025-07-20T00:00:00.000Z	66 \| moderate	16.975 \| fine	75.288 \| fine	54.36 \| good	0.212 \| good	1.536 \| good	0.109 \| good
2025-07-20T01:00:00.000Z	50 \| good	7.544 \| good	33.334 \| good	53.662 \| good	0.291 \| good	3.982 \| good	0.134 \| good
2025-07-20T02:00:00.000Z	64 \| moderate	5.785 \| good	25.38 \| good	58.752 \| fine	0.37 \| good	6.428 \| good	0.159 \| good
2025-07-20T03:00:00.000Z	58 \| moderate	13.34 \| fine	59.974 \| fine	49.372 \| good	0.448 \| good	8.874 \| good	0.184 \| good
2025-07-20T04:00:00.000Z	67 \| moderate	18.316 \| fine	80.953 \| fine	47.019 \| good	0.426 \| good	9.792 \| good	0.193 \| good
2025-07-20T05:00:00.000Z	54 \| moderate	10.997 \| good	48.884 \| good	42.717 \| good	0.404 \| good	10.709 \| good	0.201 \| good
2025-07-20T06:00:00.000Z	39 \| good	3.37 \| good	14.54 \| good	41.671 \| good	0.382 \| good	11.627 \| good	0.21 \| good
2025-07-20T07:00:00.000Z	38 \| good	1.913 \| good	7.644 \| good	40.536 \| good	0.329 \| good	11.314 \| good	0.205 \| good
2025-07-20T08:00:00.000Z	37 \| good	0.586 \| good	2.399 \| good	39.729 \| good	0.276 \| good	11.001 \| good	0.2 \| good
2025-07-20T09:00:00.000Z	36 \| good	0.919 \| good	3.657 \| good	38.514 \| good	0.224 \| good	10.688 \| good	0.195 \| good
2025-07-20T10:00:00.000Z	35 \| good	0.971 \| good	3.691 \| good	37.78 \| good	0.206 \| good	9.14 \| good	0.178 \| good
2025-07-20T11:00:00.000Z	36 \| good	0.619 \| good	2.278 \| good	39.269 \| good	0.188 \| good	7.592 \| good	0.161 \| good
2025-07-20T12:00:00.000Z	33 \| good	0.416 \| good	1.257 \| good	36.413 \| good	0.171 \| good	6.043 \| good	0.144 \| good
2025-07-20T13:00:00.000Z	36 \| good	1.923 \| good	7.787 \| good	39.158 \| good	0.208 \| good	5.026 \| good	0.141 \| good
2025-07-20T14:00:00.000Z	39 \| good	5.014 \| good	21.559 \| good	42.161 \| good	0.246 \| good	4.009 \| good	0.139 \| good
2025-07-20T15:00:00.000Z	42 \| good	6.82 \| good	30.325 \| good	44.877 \| good	0.284 \| good	2.992 \| good	0.136 \| good
2025-07-20T16:00:00.000Z	43 \| good	6.836 \| good	30.295 \| good	46.295 \| good	0.277 \| good	2.247 \| good	0.124 \| good
2025-07-20T17:00:00.000Z	44 \| good	6.706 \| good	29.795 \| good	47.618 \| good	0.27 \| good	1.503 \| good	0.112 \| good
2025-07-20T18:00:00.000Z	45 \| good	5.986 \| good	26.618 \| good	48.564 \| good	0.264 \| good	0.758 \| good	0.099 \| good
2025-07-20T19:00:00.000Z	44 \| good	6.045 \| good	26.843 \| good	48.31 \| good	0.238 \| good	0.708 \| good	0.098 \| good
2025-07-20T20:00:00.000Z	45 \| good	3.51 \| good	15.676 \| good	49.324 \| good	0.213 \| good	0.658 \| good	0.097 \| good
2025-07-20T21:00:00.000Z	47 \| good	1.678 \| good	6.774 \| good	50.615 \| good	0.188 \| good	0.609 \| good	0.095 \| good
2025-07-20T22:00:00.000Z	50 \| good	1.379 \| good	5.532 \| good	53.618 \| good	0.218 \| good	1.266 \| good	0.102 \| good
2025-07-20T23:00:00.000Z	61 \| moderate	1.54 \| good	6.404 \| good	57.544 \| fine	0.247 \| good	1.924 \| good	0.108 \| good
2025-07-21T00:00:00.000Z	61 \| moderate	1.14 \| good	4.593 \| good	57.851 \| fine	0.277 \| good	2.582 \| good	0.114 \| good
2025-07-21T01:00:00.000Z	47 \| good	0.822 \| good	3.181 \| good	51.45 \| good	0.359 \| good	4.998 \| good	0.137 \| good
2025-07-21T02:00:00.000Z	47 \| good	2.467 \| good	9.947 \| good	50.687 \| good	0.44 \| good	7.414 \| good	0.16 \| good
2025-07-21T03:00:00.000Z	40 \| good	3.147 \| good	13.561 \| good	43.153 \| good	0.522 \| good	9.83 \| good	0.182 \| good
2025-07-21T04:00:00.000Z	39 \| good	2.256 \| good	9.335 \| good	41.554 \| good	0.479 \| good	11.404 \| good	0.2 \| good
2025-07-21T05:00:00.000Z	36 \| good	1.396 \| good	5.546 \| good	38.827 \| good	0.436 \| good	12.978 \| good	0.218 \| good
2025-07-21T06:00:00.000Z	33 \| good	1.027 \| good	4.337 \| good	36.21 \| good	0.393 \| good	14.553 \| good	0.235 \| good
2025-07-21T07:00:00.000Z	32 \| good	0.543 \| good	1.847 \| good	34.604 \| good	0.342 \| good	13.878 \| good	0.23 \| good
2025-07-21T08:00:00.000Z	33 \| good	0.307 \| good	1.243 \| good	36.22 \| good	0.292 \| good	13.202 \| good	0.225 \| good
2025-07-21T09:00:00.000Z	32 \| good	0.543 \| good	2.009 \| good	35.361 \| good	0.242 \| good	12.527 \| good	0.22 \| good
2025-07-21T10:00:00.000Z	32 \| good	0.805 \| good	2.917 \| good	34.873 \| good	0.226 \| good	10.684 \| good	0.2 \| good
2025-07-21T11:00:00.000Z	32 \| good	0.576 \| good	2.031 \| good	35.416 \| good	0.209 \| good	8.841 \| good	0.18 \| good
2025-07-21T12:00:00.000Z	31 \| good	2.41 \| good	9.934 \| good	34.184 \| good	0.193 \| good	6.998 \| good	0.159 \| good
2025-07-21T13:00:00.000Z	32 \| good	4.76 \| good	20.578 \| good	34.659 \| good	0.231 \| good	5.798 \| good	0.156 \| good
2025-07-21T14:00:00.000Z	34 \| good	5.449 \| good	23.529 \| good	37.088 \| good	0.269 \| good	4.599 \| good	0.152 \| good
2025-07-21T15:00:00.000Z	38 \| good	4.674 \| good	20.274 \| good	41.314 \| good	0.307 \| good	3.399 \| good	0.149 \| good
2025-07-21T16:00:00.000Z	42 \| good	6.016 \| good	26.437 \| good	45.377 \| good	0.324 \| good	2.554 \| good	0.136 \| good
2025-07-21T17:00:00.000Z	45 \| good	6.76 \| good	30.016 \| good	49.039 \| good	0.342 \| good	1.709 \| good	0.123 \| good

Live air quality index in Boulder, Colorado today

Major air pollutants in Boulder, Colorado

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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