What is the current level of PM10 in Alton, Illinois?

Alton, Illinois currently has a PM10 concentration of 52.243 μg/m3.

What is the current level of sulfur dioxide (SO2) in Alton, Illinois?

The current sulfur dioxide (SO2) concentration in Alton, Illinois is 0.855 ppb.

What is the current level of ozone (O3) in Alton, Illinois?

Alton, Illinois currently has an ozone (O3) concentration of 33.157 ppm.

What is the current level of nitrogen dioxide (NO2) in Alton, Illinois?

The current level of nitrogen dioxide (NO2) in Alton, Illinois is 3.137 ppb.

Current air quality index in Alton, Illinois today

Name: Live air pollution levels in Alton, Illinois today
Creator: Ambee

Stay updated with real-time air quality in Alton, 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)

Moderate

Alton, Illinois

Last updated: ... (Local time)

Major air pollutants in Alton, Illinois

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

11.47 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

52.24 μg/m³

155

255

425

605+

Ozone (O₃)

33.16 ppb

201

201+

Sulfur Dioxide (SO₂)

0.85 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.14 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.26 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Alton, Illinois

Get Live Pollen Counts

Alton, Illinois

Scroll To Air Quality Map

Track live Alton, Illinois air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-05T01:00:00.000Z	35 \| good	5.93 \| good	22.17 \| good	37.901 \| good	0.445 \| good	4.747 \| good	0.275 \| good
2025-06-05T02:00:00.000Z	44 \| good	7.535 \| good	33.617 \| good	42.127 \| good	0.421 \| good	3.772 \| good	0.238 \| good
2025-06-05T03:00:00.000Z	56 \| moderate	11.92 \| good	53.019 \| good	37.161 \| good	0.472 \| good	3.457 \| good	0.237 \| good
2025-06-05T04:00:00.000Z	49 \| good	9.487 \| good	41.48 \| good	35.332 \| good	0.477 \| good	3.78 \| good	0.228 \| good
2025-06-05T05:00:00.000Z	54 \| moderate	9.157 \| good	60.546 \| fine	31.971 \| good	0.487 \| good	3.779 \| good	0.274 \| good
2025-06-05T06:00:00.000Z	44 \| good	8.306 \| good	37.744 \| good	28.687 \| good	0.546 \| good	3.409 \| good	0.274 \| good
2025-06-05T07:00:00.000Z	40 \| good	5.604 \| good	43 \| good	26.898 \| good	0.514 \| good	3.522 \| good	0.274 \| good
2025-06-05T08:00:00.000Z	26 \| good	3.756 \| good	16.787 \| good	27.717 \| good	0.52 \| good	4.224 \| good	0.279 \| good
2025-06-05T09:00:00.000Z	25 \| good	2.704 \| good	17.087 \| good	27.032 \| good	0.534 \| good	2.329 \| good	0.537 \| good
2025-06-05T10:00:00.000Z	27 \| good	3.817 \| good	14.263 \| good	29.139 \| good	0.484 \| good	1.701 \| good	0.399 \| good
2025-06-05T11:00:00.000Z	29 \| good	3.966 \| good	14.545 \| good	31.416 \| good	0.476 \| good	1.744 \| good	0.308 \| good
2025-06-05T12:00:00.000Z	31 \| good	4.627 \| good	18.984 \| good	32.809 \| good	0.481 \| good	2.003 \| good	0.307 \| good
2025-06-05T13:00:00.000Z	31 \| good	4.43 \| good	26.241 \| good	32.817 \| good	0.497 \| good	2.756 \| good	0.307 \| good
2025-06-05T14:00:00.000Z	31 \| good	4.089 \| good	21.27 \| good	32.588 \| good	0.465 \| good	2.301 \| good	0.307 \| good
2025-06-05T15:00:00.000Z	32 \| good	3.528 \| good	13.196 \| good	34.966 \| good	0.415 \| good	2.634 \| good	0.267 \| good
2025-06-05T16:00:00.000Z	33 \| good	4.144 \| good	17.329 \| good	35.618 \| good	0.446 \| good	2.284 \| good	0.263 \| good
2025-06-05T17:00:00.000Z	35 \| good	3.935 \| good	16.51 \| good	38.149 \| good	0.434 \| good	2.074 \| good	0.314 \| good
2025-06-05T18:00:00.000Z	44 \| good	4.919 \| good	47.402 \| good	38.129 \| good	0.296 \| good	2.099 \| good	0.31 \| good
2025-06-05T19:00:00.000Z	47 \| good	5.65 \| good	50.741 \| good	36.377 \| good	0.427 \| good	2.318 \| good	0.26 \| good
2025-06-05T20:00:00.000Z	61 \| moderate	9.354 \| good	74.9 \| fine	39.311 \| good	0.439 \| good	2.532 \| good	0.255 \| good
2025-06-05T21:00:00.000Z	38 \| good	6.537 \| good	31.799 \| good	39.305 \| good	0.412 \| good	2.067 \| good	0.251 \| good
2025-06-05T22:00:00.000Z	38 \| good	6.42 \| good	40.526 \| good	39.203 \| good	0.446 \| good	1.89 \| good	0.251 \| good
2025-06-05T23:00:00.000Z	38 \| good	6.725 \| good	38.556 \| good	37.061 \| good	0.596 \| good	2.259 \| good	0.204 \| good
2025-06-06T00:00:00.000Z	44 \| good	7.549 \| good	42.731 \| good	36.636 \| good	0.547 \| good	2.567 \| good	0.295 \| good
2025-06-06T01:00:00.000Z	44 \| good	7.806 \| good	30.898 \| good	37.714 \| good	0.618 \| good	3.613 \| good	0.25 \| good
2025-06-06T02:00:00.000Z	44 \| good	7.53 \| good	31.296 \| good	35.677 \| good	0.544 \| good	4.068 \| good	0.299 \| good
2025-06-06T03:00:00.000Z	44 \| good	7.666 \| good	32.824 \| good	28.316 \| good	0.493 \| good	4.059 \| good	0.352 \| good
2025-06-06T04:00:00.000Z	44 \| good	8.369 \| good	37.264 \| good	26.561 \| good	0.467 \| good	5.584 \| good	0.39 \| good
2025-06-06T05:00:00.000Z	44 \| good	8.363 \| good	37.93 \| good	21.782 \| good	0.45 \| good	6.56 \| good	0.482 \| good
2025-06-06T06:00:00.000Z	49 \| good	9.346 \| good	42.008 \| good	14.38 \| good	0.346 \| good	7.801 \| good	0.566 \| good
2025-06-06T07:00:00.000Z	49 \| good	9.24 \| good	41.684 \| good	14.411 \| good	0.347 \| good	7.761 \| good	0.566 \| good
2025-06-06T08:00:00.000Z	49 \| good	8.769 \| good	29.822 \| good	13.018 \| good	0.35 \| good	7.747 \| good	0.57 \| good
2025-06-06T09:00:00.000Z	49 \| good	8.639 \| good	33.397 \| good	9.368 \| good	0.594 \| good	12.208 \| good	0.437 \| good
2025-06-06T10:00:00.000Z	44 \| good	7.581 \| good	35.954 \| good	7.146 \| good	0.501 \| good	9.767 \| good	0.396 \| good
2025-06-06T11:00:00.000Z	38 \| good	7.237 \| good	31.193 \| good	8.488 \| good	0.556 \| good	9.346 \| good	0.43 \| good
2025-06-06T12:00:00.000Z	52 \| moderate	9.929 \| good	34.907 \| good	8.389 \| good	0.417 \| good	10.593 \| good	0.53 \| good
2025-06-06T13:00:00.000Z	54 \| moderate	10.794 \| good	42.266 \| good	12.178 \| good	0.524 \| good	11.086 \| good	0.45 \| good
2025-06-06T14:00:00.000Z	44 \| good	8.225 \| good	32.402 \| good	15.443 \| good	0.512 \| good	9.29 \| good	0.489 \| good
2025-06-06T15:00:00.000Z	64 \| moderate	10.565 \| good	81.923 \| fine	20.189 \| good	0.486 \| good	9.722 \| good	0.496 \| good
2025-06-06T16:00:00.000Z	52 \| moderate	9.89 \| good	45.245 \| good	24.334 \| good	0.512 \| good	8.066 \| good	0.403 \| good
2025-06-06T17:00:00.000Z	49 \| good	9.422 \| good	44.795 \| good	30.63 \| good	0.509 \| good	5.886 \| good	0.387 \| good
2025-06-06T18:00:00.000Z	58 \| moderate	12.522 \| fine	56.182 \| fine	33.116 \| good	0.975 \| good	5.456 \| good	0.387 \| good
2025-06-06T19:00:00.000Z	64 \| moderate	13.736 \| fine	80.894 \| fine	34.046 \| good	0.657 \| good	5.384 \| good	0.384 \| good
2025-06-06T20:00:00.000Z	64 \| moderate	15.831 \| fine	69.975 \| fine	34.211 \| good	0.55 \| good	4.368 \| good	0.3 \| good
2025-06-06T21:00:00.000Z	58 \| moderate	12.918 \| fine	56.369 \| fine	34.469 \| good	0.544 \| good	3.575 \| good	0.308 \| good
2025-06-06T22:00:00.000Z	56 \| moderate	11.776 \| good	50.76 \| good	35.161 \| good	0.99 \| good	3.003 \| good	0.257 \| good
2025-06-06T23:00:00.000Z	54 \| moderate	11.469 \| good	52.243 \| good	33.157 \| good	0.855 \| good	3.137 \| good	0.257 \| good
2025-06-07T00:00:00.000Z	54 \| moderate	11.469 \| good	52.243 \| good	33.157 \| good	0.855 \| good	3.137 \| good	0.257 \| good
2025-06-07T01:00:00.000Z	54 \| moderate	11.46 \| good	50.618 \| good	48.622 \| good	0.812 \| good	16.369 \| good	0.343 \| good
2025-06-07T02:00:00.000Z	54 \| moderate	10.787 \| good	47.788 \| good	40.538 \| good	0.872 \| good	17.505 \| good	0.349 \| good
2025-06-07T03:00:00.000Z	56 \| moderate	11.6 \| good	51.887 \| good	33.162 \| good	0.931 \| good	18.642 \| good	0.354 \| good
2025-06-07T04:00:00.000Z	52 \| moderate	10.365 \| good	45.873 \| good	29.385 \| good	0.669 \| good	17.922 \| good	0.373 \| good
2025-06-07T05:00:00.000Z	54 \| moderate	10.765 \| good	47.716 \| good	29.196 \| good	0.743 \| good	18.975 \| good	0.377 \| good
2025-06-07T06:00:00.000Z	49 \| good	9.162 \| good	41.025 \| good	31.318 \| good	0.817 \| good	20.029 \| good	0.381 \| good
2025-06-07T07:00:00.000Z	29 \| good	5.424 \| good	23.162 \| good	31.294 \| good	0.197 \| good	11.738 \| good	0.32 \| good
2025-06-07T08:00:00.000Z	38 \| good	6.913 \| good	30.794 \| good	30.521 \| good	0.265 \| good	12.73 \| good	0.326 \| good
2025-06-07T09:00:00.000Z	38 \| good	6.644 \| good	29.467 \| good	32.782 \| good	0.333 \| good	13.722 \| good	0.331 \| good
2025-06-07T10:00:00.000Z	38 \| good	6.919 \| good	30.33 \| good	27.932 \| good	0.211 \| good	6.408 \| good	0.292 \| good
2025-06-07T11:00:00.000Z	26 \| good	4.486 \| good	19.601 \| good	27.519 \| good	0.26 \| good	6.864 \| good	0.296 \| good
2025-06-07T12:00:00.000Z	27 \| good	3.276 \| good	14.094 \| good	28.769 \| good	0.31 \| good	7.321 \| good	0.3 \| good
2025-06-07T13:00:00.000Z	28 \| good	1.048 \| good	4.268 \| good	29.804 \| good	1.127 \| good	2.146 \| good	0.257 \| good
2025-06-07T14:00:00.000Z	31 \| good	0.764 \| good	2.809 \| good	34.178 \| good	1.108 \| good	2.282 \| good	0.258 \| good
2025-06-07T15:00:00.000Z	36 \| good	2.384 \| good	9.786 \| good	38.609 \| good	1.089 \| good	2.418 \| good	0.258 \| good
2025-06-07T16:00:00.000Z	39 \| good	3.686 \| good	15.994 \| good	41.898 \| good	1.131 \| good	1.881 \| good	0.212 \| good
2025-06-07T17:00:00.000Z	44 \| good	2.704 \| good	10.758 \| good	47.599 \| good	1.072 \| good	1.898 \| good	0.212 \| good
2025-06-07T18:00:00.000Z	54 \| moderate	4.019 \| good	17.55 \| good	55.757 \| fine	1.013 \| good	1.915 \| good	0.211 \| good
2025-06-07T19:00:00.000Z	67 \| moderate	2.745 \| good	11.246 \| good	59.93 \| fine	0.785 \| good	3.189 \| good	0.223 \| good
2025-06-07T20:00:00.000Z	71 \| moderate	1.78 \| good	7.454 \| good	60.898 \| fine	0.75 \| good	3.377 \| good	0.223 \| good
2025-06-07T21:00:00.000Z	43 \| good	2.891 \| good	12.106 \| good	46.379 \| good	0.714 \| good	3.566 \| good	0.223 \| good
2025-06-07T22:00:00.000Z	38 \| good	1.983 \| good	8.22 \| good	41.022 \| good	0.441 \| good	3.823 \| good	0.233 \| good
2025-06-07T23:00:00.000Z	39 \| good	1.173 \| good	4.765 \| good	42.057 \| good	0.406 \| good	4.074 \| good	0.231 \| good
2025-06-08T00:00:00.000Z	44 \| good	0.471 \| good	2 \| good	48.143 \| good	0.372 \| good	4.324 \| good	0.23 \| good
2025-06-08T01:00:00.000Z	42 \| good	0.609 \| good	2.109 \| good	44.727 \| good	0.435 \| good	4.798 \| good	0.239 \| good
2025-06-08T02:00:00.000Z	38 \| good	0.895 \| good	3.374 \| good	41.425 \| good	0.434 \| good	5.042 \| good	0.237 \| good
2025-06-08T03:00:00.000Z	36 \| good	1.827 \| good	7.636 \| good	39.349 \| good	0.433 \| good	5.285 \| good	0.236 \| good
2025-06-08T04:00:00.000Z	33 \| good	6.124 \| good	27.097 \| good	36.311 \| good	0.535 \| good	4.668 \| good	0.249 \| good
2025-06-08T05:00:00.000Z	52 \| moderate	10.494 \| good	46.502 \| good	31.624 \| good	0.527 \| good	5.03 \| good	0.249 \| good
2025-06-08T06:00:00.000Z	52 \| moderate	9.858 \| good	43.779 \| good	31.983 \| good	0.52 \| good	5.392 \| good	0.249 \| good
2025-06-08T07:00:00.000Z	34 \| good	3.508 \| good	15.333 \| good	36.541 \| good	0.685 \| good	4.048 \| good	0.248 \| good
2025-06-08T08:00:00.000Z	33 \| good	2.927 \| good	12.211 \| good	36.418 \| good	0.673 \| good	4.266 \| good	0.246 \| good
2025-06-08T09:00:00.000Z	33 \| good	1.699 \| good	6.813 \| good	36.027 \| good	0.66 \| good	4.484 \| good	0.245 \| good
2025-06-08T10:00:00.000Z	29 \| good	3.068 \| good	13.043 \| good	30.609 \| good	0.725 \| good	3.209 \| good	0.254 \| good
2025-06-08T11:00:00.000Z	32 \| good	3.597 \| good	15.879 \| good	34.677 \| good	0.758 \| good	3.351 \| good	0.252 \| good
2025-06-08T12:00:00.000Z	31 \| good	1.467 \| good	5.997 \| good	33.658 \| good	0.791 \| good	3.493 \| good	0.25 \| good
2025-06-08T13:00:00.000Z	32 \| good	0.9 \| good	3.328 \| good	35.293 \| good	0.973 \| good	1.635 \| good	0.241 \| good
2025-06-08T14:00:00.000Z	35 \| good	1.362 \| good	5.422 \| good	38.426 \| good	1.021 \| good	1.757 \| good	0.241 \| good
2025-06-08T15:00:00.000Z	39 \| good	1.601 \| good	6.615 \| good	42.242 \| good	1.07 \| good	1.88 \| good	0.241 \| good
2025-06-08T16:00:00.000Z	40 \| good	0.954 \| good	3.955 \| good	42.762 \| good	0.536 \| good	0.75 \| good	0.203 \| good
2025-06-08T17:00:00.000Z	39 \| good	0.453 \| good	1.753 \| good	42.289 \| good	0.632 \| good	0.826 \| good	0.205 \| good
2025-06-08T18:00:00.000Z	39 \| good	1.066 \| good	4.163 \| good	41.707 \| good	0.728 \| good	0.902 \| good	0.208 \| good
2025-06-08T19:00:00.000Z	37 \| good	1.945 \| good	7.993 \| good	39.695 \| good	0.331 \| good	0.809 \| good	0.177 \| good
2025-06-08T20:00:00.000Z	35 \| good	3.729 \| good	16.217 \| good	37.916 \| good	0.395 \| good	0.881 \| good	0.18 \| good
2025-06-08T21:00:00.000Z	33 \| good	1.749 \| good	7.187 \| good	36.438 \| good	0.459 \| good	0.954 \| good	0.184 \| good
2025-06-08T22:00:00.000Z	33 \| good	0.319 \| good	1.199 \| good	36.313 \| good	0.372 \| good	4.009 \| good	0.2 \| good
2025-06-08T23:00:00.000Z	31 \| good	1.976 \| good	8.055 \| good	32.679 \| good	0.436 \| good	4.33 \| good	0.204 \| good
2025-06-09T00:00:00.000Z	54 \| moderate	11.001 \| good	11.834 \| good	47.755 \| good	0.499 \| good	4.617 \| good	0.207 \| good

Alton

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Alton, Illinois

0.23ppm

How accurate is Illinois, USA air quality data?

The air quality data for Illinois, 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 Alton, Illinois get updated?

Air quality updates for Alton, Illinois are available every hour.

What time in the past 24 hours saw the poorest air quality in Alton, Illinois?

Alton, Illinois experienced its worst air quality at 08:00:00, 2025-06-06.

When was air quality in Alton, Illinois the best over the past 24 hours?

The best air quality in Alton, Illinois was observed at 11:00:00 on 2025-06-06.

What is the air quality in Alton, Illinois right now?

The air quality in Alton, Illinois right now is Moderate, with an AQI of 54.

What pollutant is most frequently found in Alton, Illinois?

In Alton, Illinois, PM2.5 is the most frequently found pollutant.

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

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

What is the PM_2.5 concentration in Alton, Illinois right now?

Alton, Illinois currently has a PM_2.5 concentration of 11.469 μg/m³.

What is the current level of PM₁₀ in Alton, Illinois?

Alton, Illinois currently has a PM₁₀ concentration of 52.243 μg/m³.

What is the current level of carbon monoxide (CO) in Alton, Illinois?

The current carbon monoxide (CO) level in Alton, Illinois is 0.257 ppm.

What is the current level of sulfur dioxide (SO₂) in Alton, Illinois?

The current sulfur dioxide (SO₂) concentration in Alton, Illinois is 0.855 ppb.

What is the current level of ozone (O₃) in Alton, Illinois?

Alton, Illinois currently has an ozone (O₃) concentration of 33.157 ppm.

What is the current level of nitrogen dioxide (NO₂) in Alton, Illinois?

The current level of nitrogen dioxide (NO₂) in Alton, Illinois is 3.137 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-05T01:00:00.000Z	35 \| good	5.93 \| good	22.17 \| good	37.901 \| good	0.445 \| good	4.747 \| good	0.275 \| good
2025-06-05T02:00:00.000Z	44 \| good	7.535 \| good	33.617 \| good	42.127 \| good	0.421 \| good	3.772 \| good	0.238 \| good
2025-06-05T03:00:00.000Z	56 \| moderate	11.92 \| good	53.019 \| good	37.161 \| good	0.472 \| good	3.457 \| good	0.237 \| good
2025-06-05T04:00:00.000Z	49 \| good	9.487 \| good	41.48 \| good	35.332 \| good	0.477 \| good	3.78 \| good	0.228 \| good
2025-06-05T05:00:00.000Z	54 \| moderate	9.157 \| good	60.546 \| fine	31.971 \| good	0.487 \| good	3.779 \| good	0.274 \| good
2025-06-05T06:00:00.000Z	44 \| good	8.306 \| good	37.744 \| good	28.687 \| good	0.546 \| good	3.409 \| good	0.274 \| good
2025-06-05T07:00:00.000Z	40 \| good	5.604 \| good	43 \| good	26.898 \| good	0.514 \| good	3.522 \| good	0.274 \| good
2025-06-05T08:00:00.000Z	26 \| good	3.756 \| good	16.787 \| good	27.717 \| good	0.52 \| good	4.224 \| good	0.279 \| good
2025-06-05T09:00:00.000Z	25 \| good	2.704 \| good	17.087 \| good	27.032 \| good	0.534 \| good	2.329 \| good	0.537 \| good
2025-06-05T10:00:00.000Z	27 \| good	3.817 \| good	14.263 \| good	29.139 \| good	0.484 \| good	1.701 \| good	0.399 \| good
2025-06-05T11:00:00.000Z	29 \| good	3.966 \| good	14.545 \| good	31.416 \| good	0.476 \| good	1.744 \| good	0.308 \| good
2025-06-05T12:00:00.000Z	31 \| good	4.627 \| good	18.984 \| good	32.809 \| good	0.481 \| good	2.003 \| good	0.307 \| good
2025-06-05T13:00:00.000Z	31 \| good	4.43 \| good	26.241 \| good	32.817 \| good	0.497 \| good	2.756 \| good	0.307 \| good
2025-06-05T14:00:00.000Z	31 \| good	4.089 \| good	21.27 \| good	32.588 \| good	0.465 \| good	2.301 \| good	0.307 \| good
2025-06-05T15:00:00.000Z	32 \| good	3.528 \| good	13.196 \| good	34.966 \| good	0.415 \| good	2.634 \| good	0.267 \| good
2025-06-05T16:00:00.000Z	33 \| good	4.144 \| good	17.329 \| good	35.618 \| good	0.446 \| good	2.284 \| good	0.263 \| good
2025-06-05T17:00:00.000Z	35 \| good	3.935 \| good	16.51 \| good	38.149 \| good	0.434 \| good	2.074 \| good	0.314 \| good
2025-06-05T18:00:00.000Z	44 \| good	4.919 \| good	47.402 \| good	38.129 \| good	0.296 \| good	2.099 \| good	0.31 \| good
2025-06-05T19:00:00.000Z	47 \| good	5.65 \| good	50.741 \| good	36.377 \| good	0.427 \| good	2.318 \| good	0.26 \| good
2025-06-05T20:00:00.000Z	61 \| moderate	9.354 \| good	74.9 \| fine	39.311 \| good	0.439 \| good	2.532 \| good	0.255 \| good
2025-06-05T21:00:00.000Z	38 \| good	6.537 \| good	31.799 \| good	39.305 \| good	0.412 \| good	2.067 \| good	0.251 \| good
2025-06-05T22:00:00.000Z	38 \| good	6.42 \| good	40.526 \| good	39.203 \| good	0.446 \| good	1.89 \| good	0.251 \| good
2025-06-05T23:00:00.000Z	38 \| good	6.725 \| good	38.556 \| good	37.061 \| good	0.596 \| good	2.259 \| good	0.204 \| good
2025-06-06T00:00:00.000Z	44 \| good	7.549 \| good	42.731 \| good	36.636 \| good	0.547 \| good	2.567 \| good	0.295 \| good
2025-06-06T01:00:00.000Z	44 \| good	7.806 \| good	30.898 \| good	37.714 \| good	0.618 \| good	3.613 \| good	0.25 \| good
2025-06-06T02:00:00.000Z	44 \| good	7.53 \| good	31.296 \| good	35.677 \| good	0.544 \| good	4.068 \| good	0.299 \| good
2025-06-06T03:00:00.000Z	44 \| good	7.666 \| good	32.824 \| good	28.316 \| good	0.493 \| good	4.059 \| good	0.352 \| good
2025-06-06T04:00:00.000Z	44 \| good	8.369 \| good	37.264 \| good	26.561 \| good	0.467 \| good	5.584 \| good	0.39 \| good
2025-06-06T05:00:00.000Z	44 \| good	8.363 \| good	37.93 \| good	21.782 \| good	0.45 \| good	6.56 \| good	0.482 \| good
2025-06-06T06:00:00.000Z	49 \| good	9.346 \| good	42.008 \| good	14.38 \| good	0.346 \| good	7.801 \| good	0.566 \| good
2025-06-06T07:00:00.000Z	49 \| good	9.24 \| good	41.684 \| good	14.411 \| good	0.347 \| good	7.761 \| good	0.566 \| good
2025-06-06T08:00:00.000Z	49 \| good	8.769 \| good	29.822 \| good	13.018 \| good	0.35 \| good	7.747 \| good	0.57 \| good
2025-06-06T09:00:00.000Z	49 \| good	8.639 \| good	33.397 \| good	9.368 \| good	0.594 \| good	12.208 \| good	0.437 \| good
2025-06-06T10:00:00.000Z	44 \| good	7.581 \| good	35.954 \| good	7.146 \| good	0.501 \| good	9.767 \| good	0.396 \| good
2025-06-06T11:00:00.000Z	38 \| good	7.237 \| good	31.193 \| good	8.488 \| good	0.556 \| good	9.346 \| good	0.43 \| good
2025-06-06T12:00:00.000Z	52 \| moderate	9.929 \| good	34.907 \| good	8.389 \| good	0.417 \| good	10.593 \| good	0.53 \| good
2025-06-06T13:00:00.000Z	54 \| moderate	10.794 \| good	42.266 \| good	12.178 \| good	0.524 \| good	11.086 \| good	0.45 \| good
2025-06-06T14:00:00.000Z	44 \| good	8.225 \| good	32.402 \| good	15.443 \| good	0.512 \| good	9.29 \| good	0.489 \| good
2025-06-06T15:00:00.000Z	64 \| moderate	10.565 \| good	81.923 \| fine	20.189 \| good	0.486 \| good	9.722 \| good	0.496 \| good
2025-06-06T16:00:00.000Z	52 \| moderate	9.89 \| good	45.245 \| good	24.334 \| good	0.512 \| good	8.066 \| good	0.403 \| good
2025-06-06T17:00:00.000Z	49 \| good	9.422 \| good	44.795 \| good	30.63 \| good	0.509 \| good	5.886 \| good	0.387 \| good
2025-06-06T18:00:00.000Z	58 \| moderate	12.522 \| fine	56.182 \| fine	33.116 \| good	0.975 \| good	5.456 \| good	0.387 \| good
2025-06-06T19:00:00.000Z	64 \| moderate	13.736 \| fine	80.894 \| fine	34.046 \| good	0.657 \| good	5.384 \| good	0.384 \| good
2025-06-06T20:00:00.000Z	64 \| moderate	15.831 \| fine	69.975 \| fine	34.211 \| good	0.55 \| good	4.368 \| good	0.3 \| good
2025-06-06T21:00:00.000Z	58 \| moderate	12.918 \| fine	56.369 \| fine	34.469 \| good	0.544 \| good	3.575 \| good	0.308 \| good
2025-06-06T22:00:00.000Z	56 \| moderate	11.776 \| good	50.76 \| good	35.161 \| good	0.99 \| good	3.003 \| good	0.257 \| good
2025-06-06T23:00:00.000Z	54 \| moderate	11.469 \| good	52.243 \| good	33.157 \| good	0.855 \| good	3.137 \| good	0.257 \| good
2025-06-07T00:00:00.000Z	54 \| moderate	11.469 \| good	52.243 \| good	33.157 \| good	0.855 \| good	3.137 \| good	0.257 \| good
2025-06-07T01:00:00.000Z	54 \| moderate	11.46 \| good	50.618 \| good	48.622 \| good	0.812 \| good	16.369 \| good	0.343 \| good
2025-06-07T02:00:00.000Z	54 \| moderate	10.787 \| good	47.788 \| good	40.538 \| good	0.872 \| good	17.505 \| good	0.349 \| good
2025-06-07T03:00:00.000Z	56 \| moderate	11.6 \| good	51.887 \| good	33.162 \| good	0.931 \| good	18.642 \| good	0.354 \| good
2025-06-07T04:00:00.000Z	52 \| moderate	10.365 \| good	45.873 \| good	29.385 \| good	0.669 \| good	17.922 \| good	0.373 \| good
2025-06-07T05:00:00.000Z	54 \| moderate	10.765 \| good	47.716 \| good	29.196 \| good	0.743 \| good	18.975 \| good	0.377 \| good
2025-06-07T06:00:00.000Z	49 \| good	9.162 \| good	41.025 \| good	31.318 \| good	0.817 \| good	20.029 \| good	0.381 \| good
2025-06-07T07:00:00.000Z	29 \| good	5.424 \| good	23.162 \| good	31.294 \| good	0.197 \| good	11.738 \| good	0.32 \| good
2025-06-07T08:00:00.000Z	38 \| good	6.913 \| good	30.794 \| good	30.521 \| good	0.265 \| good	12.73 \| good	0.326 \| good
2025-06-07T09:00:00.000Z	38 \| good	6.644 \| good	29.467 \| good	32.782 \| good	0.333 \| good	13.722 \| good	0.331 \| good
2025-06-07T10:00:00.000Z	38 \| good	6.919 \| good	30.33 \| good	27.932 \| good	0.211 \| good	6.408 \| good	0.292 \| good
2025-06-07T11:00:00.000Z	26 \| good	4.486 \| good	19.601 \| good	27.519 \| good	0.26 \| good	6.864 \| good	0.296 \| good
2025-06-07T12:00:00.000Z	27 \| good	3.276 \| good	14.094 \| good	28.769 \| good	0.31 \| good	7.321 \| good	0.3 \| good
2025-06-07T13:00:00.000Z	28 \| good	1.048 \| good	4.268 \| good	29.804 \| good	1.127 \| good	2.146 \| good	0.257 \| good
2025-06-07T14:00:00.000Z	31 \| good	0.764 \| good	2.809 \| good	34.178 \| good	1.108 \| good	2.282 \| good	0.258 \| good
2025-06-07T15:00:00.000Z	36 \| good	2.384 \| good	9.786 \| good	38.609 \| good	1.089 \| good	2.418 \| good	0.258 \| good
2025-06-07T16:00:00.000Z	39 \| good	3.686 \| good	15.994 \| good	41.898 \| good	1.131 \| good	1.881 \| good	0.212 \| good
2025-06-07T17:00:00.000Z	44 \| good	2.704 \| good	10.758 \| good	47.599 \| good	1.072 \| good	1.898 \| good	0.212 \| good
2025-06-07T18:00:00.000Z	54 \| moderate	4.019 \| good	17.55 \| good	55.757 \| fine	1.013 \| good	1.915 \| good	0.211 \| good
2025-06-07T19:00:00.000Z	67 \| moderate	2.745 \| good	11.246 \| good	59.93 \| fine	0.785 \| good	3.189 \| good	0.223 \| good
2025-06-07T20:00:00.000Z	71 \| moderate	1.78 \| good	7.454 \| good	60.898 \| fine	0.75 \| good	3.377 \| good	0.223 \| good
2025-06-07T21:00:00.000Z	43 \| good	2.891 \| good	12.106 \| good	46.379 \| good	0.714 \| good	3.566 \| good	0.223 \| good
2025-06-07T22:00:00.000Z	38 \| good	1.983 \| good	8.22 \| good	41.022 \| good	0.441 \| good	3.823 \| good	0.233 \| good
2025-06-07T23:00:00.000Z	39 \| good	1.173 \| good	4.765 \| good	42.057 \| good	0.406 \| good	4.074 \| good	0.231 \| good
2025-06-08T00:00:00.000Z	44 \| good	0.471 \| good	2 \| good	48.143 \| good	0.372 \| good	4.324 \| good	0.23 \| good
2025-06-08T01:00:00.000Z	42 \| good	0.609 \| good	2.109 \| good	44.727 \| good	0.435 \| good	4.798 \| good	0.239 \| good
2025-06-08T02:00:00.000Z	38 \| good	0.895 \| good	3.374 \| good	41.425 \| good	0.434 \| good	5.042 \| good	0.237 \| good
2025-06-08T03:00:00.000Z	36 \| good	1.827 \| good	7.636 \| good	39.349 \| good	0.433 \| good	5.285 \| good	0.236 \| good
2025-06-08T04:00:00.000Z	33 \| good	6.124 \| good	27.097 \| good	36.311 \| good	0.535 \| good	4.668 \| good	0.249 \| good
2025-06-08T05:00:00.000Z	52 \| moderate	10.494 \| good	46.502 \| good	31.624 \| good	0.527 \| good	5.03 \| good	0.249 \| good
2025-06-08T06:00:00.000Z	52 \| moderate	9.858 \| good	43.779 \| good	31.983 \| good	0.52 \| good	5.392 \| good	0.249 \| good
2025-06-08T07:00:00.000Z	34 \| good	3.508 \| good	15.333 \| good	36.541 \| good	0.685 \| good	4.048 \| good	0.248 \| good
2025-06-08T08:00:00.000Z	33 \| good	2.927 \| good	12.211 \| good	36.418 \| good	0.673 \| good	4.266 \| good	0.246 \| good
2025-06-08T09:00:00.000Z	33 \| good	1.699 \| good	6.813 \| good	36.027 \| good	0.66 \| good	4.484 \| good	0.245 \| good
2025-06-08T10:00:00.000Z	29 \| good	3.068 \| good	13.043 \| good	30.609 \| good	0.725 \| good	3.209 \| good	0.254 \| good
2025-06-08T11:00:00.000Z	32 \| good	3.597 \| good	15.879 \| good	34.677 \| good	0.758 \| good	3.351 \| good	0.252 \| good
2025-06-08T12:00:00.000Z	31 \| good	1.467 \| good	5.997 \| good	33.658 \| good	0.791 \| good	3.493 \| good	0.25 \| good
2025-06-08T13:00:00.000Z	32 \| good	0.9 \| good	3.328 \| good	35.293 \| good	0.973 \| good	1.635 \| good	0.241 \| good
2025-06-08T14:00:00.000Z	35 \| good	1.362 \| good	5.422 \| good	38.426 \| good	1.021 \| good	1.757 \| good	0.241 \| good
2025-06-08T15:00:00.000Z	39 \| good	1.601 \| good	6.615 \| good	42.242 \| good	1.07 \| good	1.88 \| good	0.241 \| good
2025-06-08T16:00:00.000Z	40 \| good	0.954 \| good	3.955 \| good	42.762 \| good	0.536 \| good	0.75 \| good	0.203 \| good
2025-06-08T17:00:00.000Z	39 \| good	0.453 \| good	1.753 \| good	42.289 \| good	0.632 \| good	0.826 \| good	0.205 \| good
2025-06-08T18:00:00.000Z	39 \| good	1.066 \| good	4.163 \| good	41.707 \| good	0.728 \| good	0.902 \| good	0.208 \| good
2025-06-08T19:00:00.000Z	37 \| good	1.945 \| good	7.993 \| good	39.695 \| good	0.331 \| good	0.809 \| good	0.177 \| good
2025-06-08T20:00:00.000Z	35 \| good	3.729 \| good	16.217 \| good	37.916 \| good	0.395 \| good	0.881 \| good	0.18 \| good
2025-06-08T21:00:00.000Z	33 \| good	1.749 \| good	7.187 \| good	36.438 \| good	0.459 \| good	0.954 \| good	0.184 \| good
2025-06-08T22:00:00.000Z	33 \| good	0.319 \| good	1.199 \| good	36.313 \| good	0.372 \| good	4.009 \| good	0.2 \| good
2025-06-08T23:00:00.000Z	31 \| good	1.976 \| good	8.055 \| good	32.679 \| good	0.436 \| good	4.33 \| good	0.204 \| good
2025-06-09T00:00:00.000Z	54 \| moderate	11.001 \| good	11.834 \| good	47.755 \| good	0.499 \| good	4.617 \| good	0.207 \| good

Current air quality index in Alton, Illinois today

Major air pollutants in Alton, Illinois

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Alton, Illinois air quality forecast and history

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Alton, Illinois

Air quality in nearby cities

Wood River, Illinois

Godfrey, Illinois

Old Jamestown, Missouri

Spanish Lake, Missouri

Florissant, Missouri

Bellefontaine Neighbors, Missouri

How accurate is Illinois, USA air quality data?

Air quality levels in US

Frequently asked questions

How frequently does the air quality data for Alton, Illinois get updated?

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When was air quality in Alton, Illinois the best over the past 24 hours?

What is the air quality in Alton, Illinois right now?

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What is the PM2.5 concentration in Alton, Illinois right now?

What is the current level of PM10 in Alton, Illinois?

What is the current level of carbon monoxide (CO) in Alton, Illinois?

What is the current level of sulfur dioxide (SO2) in Alton, Illinois?

What is the current level of ozone (O3) in Alton, Illinois?

What is the current level of nitrogen dioxide (NO2) in Alton, Illinois?

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 Alton, Illinois right now?

What is the current level of PM₁₀ in Alton, Illinois?

What is the current level of sulfur dioxide (SO₂) in Alton, Illinois?

What is the current level of ozone (O₃) in Alton, Illinois?

What is the current level of nitrogen dioxide (NO₂) in Alton, Illinois?