What are the current PM10 levels at Round Lake, Illinois?

The current PM10 levels in Round Lake, Illinois are 18.095 μg/m3.

What are the current sulfur dioxide (SO2) levels at Round Lake, Illinois?

The current sulfur dioxide (SO2) levels in Round Lake, Illinois are 0.285 ppb.

What are the current ozone (O3) levels at Round Lake, Illinois?

The current ozone (O3) levels at Round Lake, Illinois is 34.386 ppm.

What are the current nitrogen dioxide (NO2) levels at Round Lake, Illinois?

The current nitrogen dioxide (NO2) levels at Round Lake, Illinois is 3.968 ppb.

Real-time air quality index in Round Lake, Illinois today

Q: What are the current PM2.5 levels in Round Lake, Illinois?

The measured PM2.5 levels in Round Lake, Illinois at present are 3.841 μg/m3.

Stay updated with real-time air quality in Round Lake, Illinois 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

Round Lake, Illinois

Last updated: ... (Local time)

Common air pollutants in Round Lake, Illinois

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

3.84 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

18.09 μg/m³

155

255

425

605+

Ozone (O₃)

34.39 ppb

201

201+

Sulfur Dioxide (SO₂)

0.28 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.97 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.21 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Very high

Round Lake, Illinois

Get Live Pollen Counts

Round Lake, Illinois

Scroll To Air Quality Map

Track live Round Lake, Illinois air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-26T06:00:00.000Z	31 \| good	5.004 \| good	21.522 \| good	34.259 \| good	0.306 \| good	3.439 \| good	0.21 \| good
2026-04-26T07:00:00.000Z	31 \| good	4.563 \| good	22.153 \| good	32.522 \| good	0.406 \| good	3.142 \| good	0.21 \| good
2026-04-26T08:00:00.000Z	30 \| good	3.43 \| good	16.786 \| good	32.344 \| good	0.339 \| good	3.226 \| good	0.166 \| good
2026-04-26T09:00:00.000Z	29 \| good	3.34 \| good	20.978 \| good	31.302 \| good	0.36 \| good	2.776 \| good	0.166 \| good
2026-04-26T10:00:00.000Z	30 \| good	4.165 \| good	17.894 \| good	32.22 \| good	0.284 \| good	5.194 \| good	0.155 \| good
2026-04-26T11:00:00.000Z	28 \| good	3.806 \| good	9.101 \| good	30.223 \| good	0.401 \| good	5.678 \| good	0.166 \| good
2026-04-26T12:00:00.000Z	33 \| good	5.991 \| good	20.805 \| good	27.993 \| good	0.412 \| good	4.167 \| good	0.166 \| good
2026-04-26T13:00:00.000Z	33 \| good	6.206 \| good	29.432 \| good	26.463 \| good	0.388 \| good	4.128 \| good	0.166 \| good
2026-04-26T14:00:00.000Z	33 \| good	6.212 \| good	16.216 \| good	32.836 \| good	0.403 \| good	1.647 \| good	0.168 \| good
2026-04-26T15:00:00.000Z	58 \| moderate	12.929 \| fine	37.542 \| good	30.897 \| good	0.491 \| good	1.376 \| good	0.166 \| good
2026-04-26T16:00:00.000Z	38 \| good	6.528 \| good	25.571 \| good	36.825 \| good	0.547 \| good	1.624 \| good	0.166 \| good
2026-04-26T17:00:00.000Z	49 \| good	8.553 \| good	42.08 \| good	35.198 \| good	0.758 \| good	1.697 \| good	0.166 \| good
2026-04-26T18:00:00.000Z	44 \| good	8.152 \| good	34.118 \| good	37.337 \| good	1.604 \| good	1.387 \| good	0.166 \| good
2026-04-26T19:00:00.000Z	49 \| good	8.772 \| good	32.973 \| good	36.685 \| good	1.333 \| good	1.518 \| good	0.166 \| good
2026-04-26T20:00:00.000Z	38 \| good	7.269 \| good	36.476 \| good	39.664 \| good	1.537 \| good	1.427 \| good	0.166 \| good
2026-04-26T21:00:00.000Z	44 \| good	7.579 \| good	33.728 \| good	40.202 \| good	1.519 \| good	1.396 \| good	0.166 \| good
2026-04-26T22:00:00.000Z	44 \| good	8.05 \| good	38.452 \| good	39.057 \| good	1.335 \| good	1.232 \| good	0.166 \| good
2026-04-26T23:00:00.000Z	52 \| moderate	9.876 \| good	26.91 \| good	42.774 \| good	0.752 \| good	1.783 \| good	0.166 \| good
2026-04-27T00:00:00.000Z	52 \| moderate	10.222 \| good	46.374 \| good	43.079 \| good	0.657 \| good	2.612 \| good	0.155 \| good
2026-04-27T01:00:00.000Z	49 \| good	9.38 \| good	38.287 \| good	44.164 \| good	0.465 \| good	2.867 \| good	0.166 \| good
2026-04-27T02:00:00.000Z	44 \| good	8.375 \| good	33.453 \| good	40.105 \| good	0.504 \| good	2.92 \| good	0.178 \| good
2026-04-27T03:00:00.000Z	35 \| good	6.062 \| good	26.881 \| good	38.39 \| good	0.624 \| good	6.367 \| good	0.196 \| good
2026-04-27T04:00:00.000Z	44 \| good	8.247 \| good	19.616 \| good	38.137 \| good	0.452 \| good	3.246 \| good	0.166 \| good
2026-04-27T05:00:00.000Z	49 \| good	8.786 \| good	32.925 \| good	37.819 \| good	1.686 \| good	3.473 \| good	0.199 \| good
2026-04-27T06:00:00.000Z	44 \| good	8.134 \| good	28.05 \| good	37.023 \| good	1.286 \| good	2.153 \| good	0.166 \| good
2026-04-27T07:00:00.000Z	49 \| good	8.992 \| good	29.375 \| good	34.65 \| good	0.498 \| good	3.164 \| good	0.166 \| good
2026-04-27T08:00:00.000Z	52 \| moderate	9.666 \| good	33.759 \| good	33.041 \| good	0.312 \| good	2.474 \| good	0.155 \| good
2026-04-27T09:00:00.000Z	49 \| good	8.534 \| good	34.582 \| good	30.998 \| good	0.325 \| good	1.959 \| good	0.155 \| good
2026-04-27T10:00:00.000Z	44 \| good	7.675 \| good	28.808 \| good	29.372 \| good	0.294 \| good	2.414 \| good	0.155 \| good
2026-04-27T11:00:00.000Z	44 \| good	7.637 \| good	22.979 \| good	28.757 \| good	0.364 \| good	2.602 \| good	0.166 \| good
2026-04-27T12:00:00.000Z	44 \| good	7.747 \| good	26.283 \| good	24.693 \| good	0.345 \| good	3.153 \| good	0.155 \| good
2026-04-27T13:00:00.000Z	38 \| good	6.953 \| good	30.702 \| good	23.256 \| good	0.388 \| good	3.184 \| good	0.166 \| good
2026-04-27T14:00:00.000Z	44 \| good	7.612 \| good	29.064 \| good	24.851 \| good	0.483 \| good	3.569 \| good	0.188 \| good
2026-04-27T15:00:00.000Z	44 \| good	7.899 \| good	30.233 \| good	24.735 \| good	0.424 \| good	3.517 \| good	0.178 \| good
2026-04-27T16:00:00.000Z	49 \| good	8.688 \| good	31.549 \| good	21.982 \| good	0.463 \| good	3.42 \| good	0.178 \| good
2026-04-27T17:00:00.000Z	33 \| good	6.142 \| good	27.174 \| good	24.658 \| good	0.442 \| good	3.821 \| good	0.178 \| good
2026-04-27T18:00:00.000Z	33 \| good	6.1 \| good	25.608 \| good	22.443 \| good	0.388 \| good	4.707 \| good	0.178 \| good
2026-04-27T19:00:00.000Z	49 \| good	8.861 \| good	37.311 \| good	26.597 \| good	0.36 \| good	4.382 \| good	0.188 \| good
2026-04-27T20:00:00.000Z	33 \| good	5.602 \| good	24.313 \| good	21.379 \| good	0.421 \| good	5.847 \| good	0.178 \| good
2026-04-27T21:00:00.000Z	33 \| good	5.821 \| good	22.58 \| good	25.197 \| good	0.383 \| good	3.381 \| good	0.178 \| good
2026-04-27T22:00:00.000Z	44 \| good	7.696 \| good	29.041 \| good	30.766 \| good	0.338 \| good	3.016 \| good	0.189 \| good
2026-04-27T23:00:00.000Z	33 \| good	5.437 \| good	21.294 \| good	36.447 \| good	0.367 \| good	2.994 \| good	0.252 \| good
2026-04-28T00:00:00.000Z	33 \| good	6.14 \| good	21.737 \| good	29.184 \| good	0.316 \| good	4.568 \| good	0.235 \| good
2026-04-28T01:00:00.000Z	33 \| good	6.014 \| good	22.919 \| good	32.756 \| good	0.294 \| good	4.716 \| good	0.246 \| good
2026-04-28T02:00:00.000Z	33 \| good	4.236 \| good	18.633 \| good	36.072 \| good	0.239 \| good	5.541 \| good	0.235 \| good
2026-04-28T03:00:00.000Z	32 \| good	4.733 \| good	21.215 \| good	34.69 \| good	0.218 \| good	5.004 \| good	0.228 \| good
2026-04-28T04:00:00.000Z	31 \| good	4.668 \| good	19.105 \| good	33.213 \| good	0.257 \| good	5.777 \| good	0.203 \| good
2026-04-28T05:00:00.000Z	31 \| good	3.841 \| good	18.095 \| good	34.386 \| good	0.285 \| good	3.968 \| good	0.211 \| good
2026-04-28T05:00:00.000Z	31 \| good	3.841 \| good	18.095 \| good	34.386 \| good	0.285 \| good	3.968 \| good	0.211 \| good
2026-04-28T06:00:00.000Z	45 \| good	3.803 \| good	16.842 \| good	49.409 \| good	0.313 \| good	2.938 \| good	0.148 \| good
2026-04-28T07:00:00.000Z	39 \| good	4.077 \| good	18.105 \| good	41.759 \| good	0.271 \| good	2.744 \| good	0.149 \| good
2026-04-28T08:00:00.000Z	33 \| good	6.11 \| good	27.106 \| good	34.718 \| good	0.229 \| good	2.55 \| good	0.15 \| good
2026-04-28T09:00:00.000Z	30 \| good	5.202 \| good	22.366 \| good	32.322 \| good	0.187 \| good	2.356 \| good	0.15 \| good
2026-04-28T10:00:00.000Z	32 \| good	4.472 \| good	19.671 \| good	34.755 \| good	0.182 \| good	2.277 \| good	0.15 \| good
2026-04-28T11:00:00.000Z	30 \| good	4.517 \| good	19.719 \| good	31.888 \| good	0.178 \| good	2.198 \| good	0.15 \| good
2026-04-28T12:00:00.000Z	28 \| good	3.836 \| good	16.647 \| good	30.19 \| good	0.174 \| good	2.118 \| good	0.149 \| good
2026-04-28T13:00:00.000Z	29 \| good	4.298 \| good	18.793 \| good	30.962 \| good	0.182 \| good	2.057 \| good	0.149 \| good
2026-04-28T14:00:00.000Z	30 \| good	3.988 \| good	17.495 \| good	32.057 \| good	0.189 \| good	1.996 \| good	0.149 \| good
2026-04-28T15:00:00.000Z	30 \| good	2.639 \| good	10.848 \| good	31.851 \| good	0.197 \| good	1.935 \| good	0.149 \| good
2026-04-28T16:00:00.000Z	31 \| good	3.211 \| good	13.741 \| good	34.052 \| good	0.198 \| good	1.915 \| good	0.149 \| good
2026-04-28T17:00:00.000Z	34 \| good	4.896 \| good	21.055 \| good	37.136 \| good	0.198 \| good	1.895 \| good	0.149 \| good
2026-04-28T18:00:00.000Z	38 \| good	5.265 \| good	22.74 \| good	41.48 \| good	0.199 \| good	1.876 \| good	0.149 \| good
2026-04-28T19:00:00.000Z	41 \| good	4.729 \| good	20.597 \| good	43.788 \| good	0.212 \| good	2.199 \| good	0.151 \| good
2026-04-28T20:00:00.000Z	41 \| good	4.604 \| good	19.693 \| good	43.807 \| good	0.225 \| good	2.521 \| good	0.153 \| good
2026-04-28T21:00:00.000Z	42 \| good	4.558 \| good	19.738 \| good	44.96 \| good	0.238 \| good	2.844 \| good	0.155 \| good
2026-04-28T22:00:00.000Z	39 \| good	4.381 \| good	19.281 \| good	42.082 \| good	0.267 \| good	4.566 \| good	0.164 \| good
2026-04-28T23:00:00.000Z	37 \| good	4.094 \| good	17.808 \| good	40.264 \| good	0.296 \| good	6.287 \| good	0.173 \| good
2026-04-29T00:00:00.000Z	39 \| good	3.76 \| good	16.506 \| good	42.172 \| good	0.324 \| good	8.009 \| good	0.181 \| good
2026-04-29T01:00:00.000Z	32 \| good	4.095 \| good	18.055 \| good	34.512 \| good	0.442 \| good	9.832 \| good	0.193 \| good
2026-04-29T02:00:00.000Z	32 \| good	3.304 \| good	14.31 \| good	34.749 \| good	0.561 \| good	11.654 \| good	0.204 \| good
2026-04-29T03:00:00.000Z	31 \| good	1.001 \| good	3.803 \| good	33.915 \| good	0.679 \| good	13.477 \| good	0.216 \| good
2026-04-29T04:00:00.000Z	31 \| good	0.83 \| good	3.513 \| good	33.802 \| good	0.676 \| good	12.64 \| good	0.207 \| good
2026-04-29T05:00:00.000Z	31 \| good	1.22 \| good	4.794 \| good	33.834 \| good	0.672 \| good	11.803 \| good	0.197 \| good
2026-04-29T06:00:00.000Z	31 \| good	1.667 \| good	6.929 \| good	33.409 \| good	0.669 \| good	10.966 \| good	0.188 \| good
2026-04-29T07:00:00.000Z	31 \| good	2.157 \| good	8.835 \| good	34.191 \| good	0.622 \| good	8.951 \| good	0.176 \| good
2026-04-29T08:00:00.000Z	31 \| good	3.038 \| good	12.524 \| good	33.196 \| good	0.575 \| good	6.936 \| good	0.163 \| good
2026-04-29T09:00:00.000Z	24 \| good	4.007 \| good	17.475 \| good	26.002 \| good	0.527 \| good	4.92 \| good	0.151 \| good
2026-04-29T10:00:00.000Z	27 \| good	4.646 \| good	20.173 \| good	20.035 \| good	0.554 \| good	4.609 \| good	0.15 \| good
2026-04-29T11:00:00.000Z	33 \| good	6.308 \| good	27.848 \| good	24.661 \| good	0.58 \| good	4.298 \| good	0.148 \| good
2026-04-29T12:00:00.000Z	27 \| good	5.144 \| good	22.174 \| good	27.8 \| good	0.606 \| good	3.987 \| good	0.147 \| good
2026-04-29T13:00:00.000Z	27 \| good	3.376 \| good	14.314 \| good	29.022 \| good	0.607 \| good	3.646 \| good	0.149 \| good
2026-04-29T14:00:00.000Z	30 \| good	2.269 \| good	9.421 \| good	31.622 \| good	0.608 \| good	3.304 \| good	0.151 \| good
2026-04-29T15:00:00.000Z	31 \| good	1.941 \| good	7.993 \| good	34.38 \| good	0.609 \| good	2.962 \| good	0.152 \| good
2026-04-29T16:00:00.000Z	32 \| good	2.371 \| good	9.938 \| good	35.322 \| good	0.51 \| good	2.597 \| good	0.149 \| good
2026-04-29T17:00:00.000Z	34 \| good	2.738 \| good	11.209 \| good	36.975 \| good	0.412 \| good	2.232 \| good	0.145 \| good
2026-04-29T18:00:00.000Z	35 \| good	2.712 \| good	11.122 \| good	38.226 \| good	0.313 \| good	1.866 \| good	0.142 \| good
2026-04-29T19:00:00.000Z	35 \| good	1.983 \| good	7.993 \| good	37.677 \| good	0.278 \| good	1.944 \| good	0.141 \| good
2026-04-29T20:00:00.000Z	31 \| good	2.16 \| good	8.775 \| good	34.44 \| good	0.242 \| good	2.022 \| good	0.14 \| good
2026-04-29T21:00:00.000Z	35 \| good	3.01 \| good	13.067 \| good	37.516 \| good	0.206 \| good	2.101 \| good	0.14 \| good
2026-04-29T22:00:00.000Z	38 \| good	3.08 \| good	13.22 \| good	41.275 \| good	0.219 \| good	2.663 \| good	0.143 \| good
2026-04-29T23:00:00.000Z	39 \| good	3.259 \| good	13.842 \| good	42.287 \| good	0.231 \| good	3.226 \| good	0.147 \| good
2026-04-30T00:00:00.000Z	38 \| good	3.28 \| good	14.097 \| good	41.254 \| good	0.243 \| good	3.789 \| good	0.15 \| good
2026-04-30T01:00:00.000Z	31 \| good	4.402 \| good	19.277 \| good	33.524 \| good	0.308 \| good	5.469 \| good	0.161 \| good
2026-04-30T02:00:00.000Z	33 \| good	6.212 \| good	27.665 \| good	25.89 \| good	0.374 \| good	7.15 \| good	0.172 \| good
2026-04-30T03:00:00.000Z	38 \| good	6.753 \| good	29.816 \| good	23.099 \| good	0.439 \| good	8.831 \| good	0.183 \| good
2026-04-30T04:00:00.000Z	44 \| good	7.907 \| good	34.679 \| good	21.405 \| good	0.433 \| good	7.918 \| good	0.176 \| good
2026-04-30T05:00:00.000Z	44 \| good	7.548 \| good	33.162 \| good	23.014 \| good	0.428 \| good	7.005 \| good	0.17 \| good

Round Lake

Empower business decisions with accurate air quality data

Round Lake, Illinois air quality map: Real-time AQI near you

0.20ppm

How accurate is Illinois, USA air quality data?

Air quality measurements for Illinois, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.

Source: Ambee Data Sources

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Check live rankings of places in the USA affected by air pollution.

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Frequently asked questions

How frequently is the air quality data for Round Lake, Illinois updated?

Air quality data for Round Lake, Illinois is updated on an hourly basis.

When did Round Lake, Illinois experience the worst air quality in the last 24 hours?

The worst air quality in Round Lake, Illinois was recorded at 08:00:00 on 2026-04-27.

When did Round Lake, Illinois have its best air quality in the last 24 hours?

The best air quality in Round Lake, Illinois was recorded at 04:00:00 on 2026-04-28.

What is the real-time air quality index for Round Lake, Illinois?

The real-time air quality index in Round Lake, Illinois is 31, currently categorized as Good.

Which pollutant is found most often in Round Lake, Illinois?

The most common pollutant in Round Lake, Illinois is O3.

What can I do if the air quality in Round Lake, Illinois is poor?

If the air quality in Round Lake, Illinois is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in Round Lake, Illinois?

The measured PM_2.5 levels in Round Lake, Illinois at present are 3.841 μg/m³.

What are the current PM₁₀ levels at Round Lake, Illinois?

The current PM₁₀ levels in Round Lake, Illinois are 18.095 μg/m³.

What are the current carbon monoxide (CO) levels at Round Lake, Illinois?

The current carbon monoxide (CO) level in Round Lake, Illinois is 0.211 ppm.

What are the current sulfur dioxide (SO₂) levels at Round Lake, Illinois?

The current sulfur dioxide (SO₂) levels in Round Lake, Illinois are 0.285 ppb.

What are the current ozone (O₃) levels at Round Lake, Illinois?

The current ozone (O₃) levels at Round Lake, Illinois is 34.386 ppm.

What are the current nitrogen dioxide (NO₂) levels at Round Lake, Illinois?

The current nitrogen dioxide (NO₂) levels at Round Lake, Illinois is 3.968 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-26T06:00:00.000Z	31 \| good	5.004 \| good	21.522 \| good	34.259 \| good	0.306 \| good	3.439 \| good	0.21 \| good
2026-04-26T07:00:00.000Z	31 \| good	4.563 \| good	22.153 \| good	32.522 \| good	0.406 \| good	3.142 \| good	0.21 \| good
2026-04-26T08:00:00.000Z	30 \| good	3.43 \| good	16.786 \| good	32.344 \| good	0.339 \| good	3.226 \| good	0.166 \| good
2026-04-26T09:00:00.000Z	29 \| good	3.34 \| good	20.978 \| good	31.302 \| good	0.36 \| good	2.776 \| good	0.166 \| good
2026-04-26T10:00:00.000Z	30 \| good	4.165 \| good	17.894 \| good	32.22 \| good	0.284 \| good	5.194 \| good	0.155 \| good
2026-04-26T11:00:00.000Z	28 \| good	3.806 \| good	9.101 \| good	30.223 \| good	0.401 \| good	5.678 \| good	0.166 \| good
2026-04-26T12:00:00.000Z	33 \| good	5.991 \| good	20.805 \| good	27.993 \| good	0.412 \| good	4.167 \| good	0.166 \| good
2026-04-26T13:00:00.000Z	33 \| good	6.206 \| good	29.432 \| good	26.463 \| good	0.388 \| good	4.128 \| good	0.166 \| good
2026-04-26T14:00:00.000Z	33 \| good	6.212 \| good	16.216 \| good	32.836 \| good	0.403 \| good	1.647 \| good	0.168 \| good
2026-04-26T15:00:00.000Z	58 \| moderate	12.929 \| fine	37.542 \| good	30.897 \| good	0.491 \| good	1.376 \| good	0.166 \| good
2026-04-26T16:00:00.000Z	38 \| good	6.528 \| good	25.571 \| good	36.825 \| good	0.547 \| good	1.624 \| good	0.166 \| good
2026-04-26T17:00:00.000Z	49 \| good	8.553 \| good	42.08 \| good	35.198 \| good	0.758 \| good	1.697 \| good	0.166 \| good
2026-04-26T18:00:00.000Z	44 \| good	8.152 \| good	34.118 \| good	37.337 \| good	1.604 \| good	1.387 \| good	0.166 \| good
2026-04-26T19:00:00.000Z	49 \| good	8.772 \| good	32.973 \| good	36.685 \| good	1.333 \| good	1.518 \| good	0.166 \| good
2026-04-26T20:00:00.000Z	38 \| good	7.269 \| good	36.476 \| good	39.664 \| good	1.537 \| good	1.427 \| good	0.166 \| good
2026-04-26T21:00:00.000Z	44 \| good	7.579 \| good	33.728 \| good	40.202 \| good	1.519 \| good	1.396 \| good	0.166 \| good
2026-04-26T22:00:00.000Z	44 \| good	8.05 \| good	38.452 \| good	39.057 \| good	1.335 \| good	1.232 \| good	0.166 \| good
2026-04-26T23:00:00.000Z	52 \| moderate	9.876 \| good	26.91 \| good	42.774 \| good	0.752 \| good	1.783 \| good	0.166 \| good
2026-04-27T00:00:00.000Z	52 \| moderate	10.222 \| good	46.374 \| good	43.079 \| good	0.657 \| good	2.612 \| good	0.155 \| good
2026-04-27T01:00:00.000Z	49 \| good	9.38 \| good	38.287 \| good	44.164 \| good	0.465 \| good	2.867 \| good	0.166 \| good
2026-04-27T02:00:00.000Z	44 \| good	8.375 \| good	33.453 \| good	40.105 \| good	0.504 \| good	2.92 \| good	0.178 \| good
2026-04-27T03:00:00.000Z	35 \| good	6.062 \| good	26.881 \| good	38.39 \| good	0.624 \| good	6.367 \| good	0.196 \| good
2026-04-27T04:00:00.000Z	44 \| good	8.247 \| good	19.616 \| good	38.137 \| good	0.452 \| good	3.246 \| good	0.166 \| good
2026-04-27T05:00:00.000Z	49 \| good	8.786 \| good	32.925 \| good	37.819 \| good	1.686 \| good	3.473 \| good	0.199 \| good
2026-04-27T06:00:00.000Z	44 \| good	8.134 \| good	28.05 \| good	37.023 \| good	1.286 \| good	2.153 \| good	0.166 \| good
2026-04-27T07:00:00.000Z	49 \| good	8.992 \| good	29.375 \| good	34.65 \| good	0.498 \| good	3.164 \| good	0.166 \| good
2026-04-27T08:00:00.000Z	52 \| moderate	9.666 \| good	33.759 \| good	33.041 \| good	0.312 \| good	2.474 \| good	0.155 \| good
2026-04-27T09:00:00.000Z	49 \| good	8.534 \| good	34.582 \| good	30.998 \| good	0.325 \| good	1.959 \| good	0.155 \| good
2026-04-27T10:00:00.000Z	44 \| good	7.675 \| good	28.808 \| good	29.372 \| good	0.294 \| good	2.414 \| good	0.155 \| good
2026-04-27T11:00:00.000Z	44 \| good	7.637 \| good	22.979 \| good	28.757 \| good	0.364 \| good	2.602 \| good	0.166 \| good
2026-04-27T12:00:00.000Z	44 \| good	7.747 \| good	26.283 \| good	24.693 \| good	0.345 \| good	3.153 \| good	0.155 \| good
2026-04-27T13:00:00.000Z	38 \| good	6.953 \| good	30.702 \| good	23.256 \| good	0.388 \| good	3.184 \| good	0.166 \| good
2026-04-27T14:00:00.000Z	44 \| good	7.612 \| good	29.064 \| good	24.851 \| good	0.483 \| good	3.569 \| good	0.188 \| good
2026-04-27T15:00:00.000Z	44 \| good	7.899 \| good	30.233 \| good	24.735 \| good	0.424 \| good	3.517 \| good	0.178 \| good
2026-04-27T16:00:00.000Z	49 \| good	8.688 \| good	31.549 \| good	21.982 \| good	0.463 \| good	3.42 \| good	0.178 \| good
2026-04-27T17:00:00.000Z	33 \| good	6.142 \| good	27.174 \| good	24.658 \| good	0.442 \| good	3.821 \| good	0.178 \| good
2026-04-27T18:00:00.000Z	33 \| good	6.1 \| good	25.608 \| good	22.443 \| good	0.388 \| good	4.707 \| good	0.178 \| good
2026-04-27T19:00:00.000Z	49 \| good	8.861 \| good	37.311 \| good	26.597 \| good	0.36 \| good	4.382 \| good	0.188 \| good
2026-04-27T20:00:00.000Z	33 \| good	5.602 \| good	24.313 \| good	21.379 \| good	0.421 \| good	5.847 \| good	0.178 \| good
2026-04-27T21:00:00.000Z	33 \| good	5.821 \| good	22.58 \| good	25.197 \| good	0.383 \| good	3.381 \| good	0.178 \| good
2026-04-27T22:00:00.000Z	44 \| good	7.696 \| good	29.041 \| good	30.766 \| good	0.338 \| good	3.016 \| good	0.189 \| good
2026-04-27T23:00:00.000Z	33 \| good	5.437 \| good	21.294 \| good	36.447 \| good	0.367 \| good	2.994 \| good	0.252 \| good
2026-04-28T00:00:00.000Z	33 \| good	6.14 \| good	21.737 \| good	29.184 \| good	0.316 \| good	4.568 \| good	0.235 \| good
2026-04-28T01:00:00.000Z	33 \| good	6.014 \| good	22.919 \| good	32.756 \| good	0.294 \| good	4.716 \| good	0.246 \| good
2026-04-28T02:00:00.000Z	33 \| good	4.236 \| good	18.633 \| good	36.072 \| good	0.239 \| good	5.541 \| good	0.235 \| good
2026-04-28T03:00:00.000Z	32 \| good	4.733 \| good	21.215 \| good	34.69 \| good	0.218 \| good	5.004 \| good	0.228 \| good
2026-04-28T04:00:00.000Z	31 \| good	4.668 \| good	19.105 \| good	33.213 \| good	0.257 \| good	5.777 \| good	0.203 \| good
2026-04-28T05:00:00.000Z	31 \| good	3.841 \| good	18.095 \| good	34.386 \| good	0.285 \| good	3.968 \| good	0.211 \| good
2026-04-28T05:00:00.000Z	31 \| good	3.841 \| good	18.095 \| good	34.386 \| good	0.285 \| good	3.968 \| good	0.211 \| good
2026-04-28T06:00:00.000Z	45 \| good	3.803 \| good	16.842 \| good	49.409 \| good	0.313 \| good	2.938 \| good	0.148 \| good
2026-04-28T07:00:00.000Z	39 \| good	4.077 \| good	18.105 \| good	41.759 \| good	0.271 \| good	2.744 \| good	0.149 \| good
2026-04-28T08:00:00.000Z	33 \| good	6.11 \| good	27.106 \| good	34.718 \| good	0.229 \| good	2.55 \| good	0.15 \| good
2026-04-28T09:00:00.000Z	30 \| good	5.202 \| good	22.366 \| good	32.322 \| good	0.187 \| good	2.356 \| good	0.15 \| good
2026-04-28T10:00:00.000Z	32 \| good	4.472 \| good	19.671 \| good	34.755 \| good	0.182 \| good	2.277 \| good	0.15 \| good
2026-04-28T11:00:00.000Z	30 \| good	4.517 \| good	19.719 \| good	31.888 \| good	0.178 \| good	2.198 \| good	0.15 \| good
2026-04-28T12:00:00.000Z	28 \| good	3.836 \| good	16.647 \| good	30.19 \| good	0.174 \| good	2.118 \| good	0.149 \| good
2026-04-28T13:00:00.000Z	29 \| good	4.298 \| good	18.793 \| good	30.962 \| good	0.182 \| good	2.057 \| good	0.149 \| good
2026-04-28T14:00:00.000Z	30 \| good	3.988 \| good	17.495 \| good	32.057 \| good	0.189 \| good	1.996 \| good	0.149 \| good
2026-04-28T15:00:00.000Z	30 \| good	2.639 \| good	10.848 \| good	31.851 \| good	0.197 \| good	1.935 \| good	0.149 \| good
2026-04-28T16:00:00.000Z	31 \| good	3.211 \| good	13.741 \| good	34.052 \| good	0.198 \| good	1.915 \| good	0.149 \| good
2026-04-28T17:00:00.000Z	34 \| good	4.896 \| good	21.055 \| good	37.136 \| good	0.198 \| good	1.895 \| good	0.149 \| good
2026-04-28T18:00:00.000Z	38 \| good	5.265 \| good	22.74 \| good	41.48 \| good	0.199 \| good	1.876 \| good	0.149 \| good
2026-04-28T19:00:00.000Z	41 \| good	4.729 \| good	20.597 \| good	43.788 \| good	0.212 \| good	2.199 \| good	0.151 \| good
2026-04-28T20:00:00.000Z	41 \| good	4.604 \| good	19.693 \| good	43.807 \| good	0.225 \| good	2.521 \| good	0.153 \| good
2026-04-28T21:00:00.000Z	42 \| good	4.558 \| good	19.738 \| good	44.96 \| good	0.238 \| good	2.844 \| good	0.155 \| good
2026-04-28T22:00:00.000Z	39 \| good	4.381 \| good	19.281 \| good	42.082 \| good	0.267 \| good	4.566 \| good	0.164 \| good
2026-04-28T23:00:00.000Z	37 \| good	4.094 \| good	17.808 \| good	40.264 \| good	0.296 \| good	6.287 \| good	0.173 \| good
2026-04-29T00:00:00.000Z	39 \| good	3.76 \| good	16.506 \| good	42.172 \| good	0.324 \| good	8.009 \| good	0.181 \| good
2026-04-29T01:00:00.000Z	32 \| good	4.095 \| good	18.055 \| good	34.512 \| good	0.442 \| good	9.832 \| good	0.193 \| good
2026-04-29T02:00:00.000Z	32 \| good	3.304 \| good	14.31 \| good	34.749 \| good	0.561 \| good	11.654 \| good	0.204 \| good
2026-04-29T03:00:00.000Z	31 \| good	1.001 \| good	3.803 \| good	33.915 \| good	0.679 \| good	13.477 \| good	0.216 \| good
2026-04-29T04:00:00.000Z	31 \| good	0.83 \| good	3.513 \| good	33.802 \| good	0.676 \| good	12.64 \| good	0.207 \| good
2026-04-29T05:00:00.000Z	31 \| good	1.22 \| good	4.794 \| good	33.834 \| good	0.672 \| good	11.803 \| good	0.197 \| good
2026-04-29T06:00:00.000Z	31 \| good	1.667 \| good	6.929 \| good	33.409 \| good	0.669 \| good	10.966 \| good	0.188 \| good
2026-04-29T07:00:00.000Z	31 \| good	2.157 \| good	8.835 \| good	34.191 \| good	0.622 \| good	8.951 \| good	0.176 \| good
2026-04-29T08:00:00.000Z	31 \| good	3.038 \| good	12.524 \| good	33.196 \| good	0.575 \| good	6.936 \| good	0.163 \| good
2026-04-29T09:00:00.000Z	24 \| good	4.007 \| good	17.475 \| good	26.002 \| good	0.527 \| good	4.92 \| good	0.151 \| good
2026-04-29T10:00:00.000Z	27 \| good	4.646 \| good	20.173 \| good	20.035 \| good	0.554 \| good	4.609 \| good	0.15 \| good
2026-04-29T11:00:00.000Z	33 \| good	6.308 \| good	27.848 \| good	24.661 \| good	0.58 \| good	4.298 \| good	0.148 \| good
2026-04-29T12:00:00.000Z	27 \| good	5.144 \| good	22.174 \| good	27.8 \| good	0.606 \| good	3.987 \| good	0.147 \| good
2026-04-29T13:00:00.000Z	27 \| good	3.376 \| good	14.314 \| good	29.022 \| good	0.607 \| good	3.646 \| good	0.149 \| good
2026-04-29T14:00:00.000Z	30 \| good	2.269 \| good	9.421 \| good	31.622 \| good	0.608 \| good	3.304 \| good	0.151 \| good
2026-04-29T15:00:00.000Z	31 \| good	1.941 \| good	7.993 \| good	34.38 \| good	0.609 \| good	2.962 \| good	0.152 \| good
2026-04-29T16:00:00.000Z	32 \| good	2.371 \| good	9.938 \| good	35.322 \| good	0.51 \| good	2.597 \| good	0.149 \| good
2026-04-29T17:00:00.000Z	34 \| good	2.738 \| good	11.209 \| good	36.975 \| good	0.412 \| good	2.232 \| good	0.145 \| good
2026-04-29T18:00:00.000Z	35 \| good	2.712 \| good	11.122 \| good	38.226 \| good	0.313 \| good	1.866 \| good	0.142 \| good
2026-04-29T19:00:00.000Z	35 \| good	1.983 \| good	7.993 \| good	37.677 \| good	0.278 \| good	1.944 \| good	0.141 \| good
2026-04-29T20:00:00.000Z	31 \| good	2.16 \| good	8.775 \| good	34.44 \| good	0.242 \| good	2.022 \| good	0.14 \| good
2026-04-29T21:00:00.000Z	35 \| good	3.01 \| good	13.067 \| good	37.516 \| good	0.206 \| good	2.101 \| good	0.14 \| good
2026-04-29T22:00:00.000Z	38 \| good	3.08 \| good	13.22 \| good	41.275 \| good	0.219 \| good	2.663 \| good	0.143 \| good
2026-04-29T23:00:00.000Z	39 \| good	3.259 \| good	13.842 \| good	42.287 \| good	0.231 \| good	3.226 \| good	0.147 \| good
2026-04-30T00:00:00.000Z	38 \| good	3.28 \| good	14.097 \| good	41.254 \| good	0.243 \| good	3.789 \| good	0.15 \| good
2026-04-30T01:00:00.000Z	31 \| good	4.402 \| good	19.277 \| good	33.524 \| good	0.308 \| good	5.469 \| good	0.161 \| good
2026-04-30T02:00:00.000Z	33 \| good	6.212 \| good	27.665 \| good	25.89 \| good	0.374 \| good	7.15 \| good	0.172 \| good
2026-04-30T03:00:00.000Z	38 \| good	6.753 \| good	29.816 \| good	23.099 \| good	0.439 \| good	8.831 \| good	0.183 \| good
2026-04-30T04:00:00.000Z	44 \| good	7.907 \| good	34.679 \| good	21.405 \| good	0.433 \| good	7.918 \| good	0.176 \| good
2026-04-30T05:00:00.000Z	44 \| good	7.548 \| good	33.162 \| good	23.014 \| good	0.428 \| good	7.005 \| good	0.17 \| good

Real-time air quality index in Round Lake, Illinois today

Common air pollutants in Round Lake, Illinois

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Round Lake, Illinois air quality forecast and history

Empower business decisions with accurate air quality data

Round Lake, Illinois air quality map: Real-time AQI near you

Air quality in nearby cities

Round Lake Beach, Illinois

Grayslake, Illinois

Lindenhurst, Illinois

Fox Lake, Illinois

Gages Lake, Illinois

Wauconda, Illinois

How accurate is Illinois, USA air quality data?

Air quality levels in US

Frequently asked questions

How frequently is the air quality data for Round Lake, Illinois updated?

When did Round Lake, Illinois experience the worst air quality in the last 24 hours?

When did Round Lake, Illinois have its best air quality in the last 24 hours?

What is the real-time air quality index for Round Lake, Illinois?

Which pollutant is found most often in Round Lake, Illinois?

What can I do if the air quality in Round Lake, Illinois is poor?

What are the current PM2.5 levels in Round Lake, Illinois?

What are the current PM10 levels at Round Lake, Illinois?

What are the current carbon monoxide (CO) levels at Round Lake, Illinois?

What are the current sulfur dioxide (SO2) levels at Round Lake, Illinois?

What are the current ozone (O3) levels at Round Lake, Illinois?

What are the current nitrogen dioxide (NO2) levels at Round Lake, Illinois?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What are the current PM_2.5 levels in Round Lake, Illinois?

What are the current PM₁₀ levels at Round Lake, Illinois?

What are the current sulfur dioxide (SO₂) levels at Round Lake, Illinois?

What are the current ozone (O₃) levels at Round Lake, Illinois?

What are the current nitrogen dioxide (NO₂) levels at Round Lake, Illinois?