Chi, Chur, Graubunden, Switzerland Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
November Air Quality Analysis
Chi, Chur, Graubunden, Switzerland
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
14th Nov 2025
78AQILowest AQI recorded on
19th Nov 2023
8AQISame Day Analysis (26th November ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 40 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 26th Nov - 27th Nov 2025
Chi, Chur, Graubunden, Switzerland
AQI
Day
Night
.
7 AM26th Nov 2025
4 PM
6 AM27th Nov 2025
Day time
Avg. Highest Time
4PM26th Nov
51AQI
Avg. Lowest Time
7AM26th Nov
29AQI
Night time
Avg. Highest Time
2AM27th Nov
58AQI
Avg. Lowest Time
5PM26th Nov
52AQI
In the last 24 hours,
Chi's AQI reached its highest point of 58 at 2 AM during the Night, while the lowest point, 29, was recorded at 7 AM during the Day between 26th Nov and 27th Nov 2025.
Day & Night AQI Trend : Oct - Nov 2025
Chi, Chur, Graubunden, Switzerland
OctNov
28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th
Day
Night
28th Oct 2025307 AMAQI
28th Oct 2025268 AMAQI
28th Oct 2025249 AMAQI
28th Oct 20252710 AMAQI
28th Oct 20253511 AMAQI
28th Oct 20253912 PMAQI
28th Oct 2025361 PMAQI
28th Oct 2025332 PMAQI
28th Oct 2025303 PMAQI
28th Oct 2025354 PMAQI
28th Oct 2025365 PMAQI
28th Oct 2025416 PMAQI
28th Oct 2025527 PMAQI
28th Oct 2025568 PMAQI
28th Oct 2025589 PMAQI
28th Oct 20257010 PMAQI
28th Oct 20256811 PMAQI
29th Oct 20256212 AMAQI
29th Oct 2025631 AMAQI
29th Oct 2025552 AMAQI
29th Oct 2025493 AMAQI
29th Oct 2025324 AMAQI
29th Oct 2025335 AMAQI
29th Oct 2025296 AMAQI
0°C-5/4°C
29th Oct 2025317 AMAQI
29th Oct 2025308 AMAQI
29th Oct 2025319 AMAQI
29th Oct 20252610 AMAQI
29th Oct 20253011 AMAQI
29th Oct 20253312 PMAQI
29th Oct 2025291 PMAQI
29th Oct 2025422 PMAQI
29th Oct 2025403 PMAQI
29th Oct 2025474 PMAQI
29th Oct 2025485 PMAQI
29th Oct 2025516 PMAQI
29th Oct 2025577 PMAQI
29th Oct 2025668 PMAQI
29th Oct 2025689 PMAQI
29th Oct 20256910 PMAQI
29th Oct 20257311 PMAQI
30th Oct 20257112 AMAQI
30th Oct 2025671 AMAQI
30th Oct 2025612 AMAQI
30th Oct 2025533 AMAQI
30th Oct 2025504 AMAQI
30th Oct 2025465 AMAQI
30th Oct 2025416 AMAQI
2°C-2/6°C
30th Oct 2025337 AMAQI
30th Oct 2025468 AMAQI
30th Oct 2025449 AMAQI
30th Oct 20254710 AMAQI
30th Oct 20255311 AMAQI
30th Oct 20255812 PMAQI
30th Oct 2025591 PMAQI
30th Oct 2025582 PMAQI
30th Oct 2025503 PMAQI
30th Oct 2025434 PMAQI
30th Oct 2025305 PMAQI
30th Oct 2025306 PMAQI
30th Oct 2025337 PMAQI
30th Oct 2025438 PMAQI
30th Oct 2025529 PMAQI
30th Oct 20255310 PMAQI
30th Oct 20255611 PMAQI
31st Oct 20255712 AMAQI
31st Oct 2025571 AMAQI
31st Oct 2025532 AMAQI
31st Oct 2025443 AMAQI
31st Oct 2025434 AMAQI
31st Oct 2025455 AMAQI
31st Oct 2025446 AMAQI
4°C2/8°C
31st Oct 2025487 AMAQI
31st Oct 2025468 AMAQI
31st Oct 2025489 AMAQI
31st Oct 20255010 AMAQI
31st Oct 20255111 AMAQI
31st Oct 20255412 PMAQI
31st Oct 2025551 PMAQI
31st Oct 2025522 PMAQI
31st Oct 2025493 PMAQI
31st Oct 2025514 PMAQI
31st Oct 2025535 PMAQI
31st Oct 2025546 PMAQI
31st Oct 2025537 PMAQI
31st Oct 2025538 PMAQI
31st Oct 2025529 PMAQI
31st Oct 20255410 PMAQI
31st Oct 20255811 PMAQI
1st Nov 20256112 AMAQI
1st Nov 2025591 AMAQI
1st Nov 2025582 AMAQI
1st Nov 2025623 AMAQI
1st Nov 2025624 AMAQI
1st Nov 2025595 AMAQI
1st Nov 2025566 AMAQI
6°C3/11°C
1st Nov 2025547 AMAQI
1st Nov 2025558 AMAQI
1st Nov 2025549 AMAQI
1st Nov 20255310 AMAQI
1st Nov 20255311 AMAQI
1st Nov 20255612 PMAQI
1st Nov 2025561 PMAQI
1st Nov 2025542 PMAQI
1st Nov 2025523 PMAQI
1st Nov 2025534 PMAQI
1st Nov 2025545 PMAQI
1st Nov 2025556 PMAQI
1st Nov 2025557 PMAQI
1st Nov 2025568 PMAQI
1st Nov 2025609 PMAQI
1st Nov 20255810 PMAQI
1st Nov 20255811 PMAQI
2nd Nov 20255912 AMAQI
2nd Nov 2025591 AMAQI
2nd Nov 2025592 AMAQI
2nd Nov 2025583 AMAQI
2nd Nov 2025604 AMAQI
2nd Nov 2025585 AMAQI
2nd Nov 2025566 AMAQI
6°C4/11°C
2nd Nov 2025547 AMAQI
2nd Nov 2025568 AMAQI
2nd Nov 2025569 AMAQI
2nd Nov 20255410 AMAQI
2nd Nov 20255211 AMAQI
2nd Nov 20253912 PMAQI
2nd Nov 2025281 PMAQI
2nd Nov 2025242 PMAQI
2nd Nov 2025223 PMAQI
2nd Nov 2025214 PMAQI
2nd Nov 2025205 PMAQI
2nd Nov 2025226 PMAQI
2nd Nov 2025227 PMAQI
2nd Nov 2025278 PMAQI
2nd Nov 2025289 PMAQI
2nd Nov 20252610 PMAQI
2nd Nov 20252911 PMAQI
3rd Nov 20252412 AMAQI
3rd Nov 2025221 AMAQI
3rd Nov 2025232 AMAQI
3rd Nov 2025233 AMAQI
3rd Nov 2025254 AMAQI
3rd Nov 2025275 AMAQI
3rd Nov 2025296 AMAQI
4°C1/6°C
3rd Nov 2025277 AMAQI
3rd Nov 2025228 AMAQI
3rd Nov 2025299 AMAQI
3rd Nov 20253110 AMAQI
3rd Nov 20252811 AMAQI
3rd Nov 20253412 PMAQI
3rd Nov 2025311 PMAQI
3rd Nov 2025292 PMAQI
3rd Nov 2025283 PMAQI
3rd Nov 2025324 PMAQI
3rd Nov 2025325 PMAQI
3rd Nov 2025326 PMAQI
3rd Nov 2025397 PMAQI
3rd Nov 2025418 PMAQI
3rd Nov 2025479 PMAQI
3rd Nov 20255110 PMAQI
3rd Nov 20255611 PMAQI
4th Nov 20255712 AMAQI
4th Nov 2025561 AMAQI
4th Nov 2025532 AMAQI
4th Nov 2025383 AMAQI
4th Nov 2025354 AMAQI
4th Nov 2025345 AMAQI
4th Nov 2025306 AMAQI
0°C-5/3°C
4th Nov 2025307 AMAQI
4th Nov 2025278 AMAQI
4th Nov 2025349 AMAQI
4th Nov 20254010 AMAQI
4th Nov 20254011 AMAQI
4th Nov 20254112 PMAQI
4th Nov 2025471 PMAQI
4th Nov 2025452 PMAQI
4th Nov 2025483 PMAQI
4th Nov 2025464 PMAQI
4th Nov 2025525 PMAQI
4th Nov 2025536 PMAQI
4th Nov 2025547 PMAQI
4th Nov 2025578 PMAQI
4th Nov 2025709 PMAQI
4th Nov 20257610 PMAQI
4th Nov 20257011 PMAQI
5th Nov 20256612 AMAQI
5th Nov 2025631 AMAQI
5th Nov 2025552 AMAQI
5th Nov 2025483 AMAQI
5th Nov 2025494 AMAQI
5th Nov 2025535 AMAQI
5th Nov 2025526 AMAQI
1°C-4/8°C
5th Nov 2025467 AMAQI
5th Nov 2025538 AMAQI
5th Nov 2025579 AMAQI
5th Nov 20255910 AMAQI
5th Nov 20256011 AMAQI
5th Nov 20255612 PMAQI
5th Nov 2025541 PMAQI
5th Nov 2025532 PMAQI
5th Nov 2025583 PMAQI
5th Nov 2025604 PMAQI
5th Nov 2025615 PMAQI
5th Nov 2025646 PMAQI
5th Nov 2025707 PMAQI
5th Nov 2025718 PMAQI
5th Nov 2025749 PMAQI
5th Nov 20257710 PMAQI
5th Nov 20257911 PMAQI
6th Nov 20257812 AMAQI
6th Nov 2025721 AMAQI
6th Nov 2025672 AMAQI
6th Nov 2025593 AMAQI
6th Nov 2025564 AMAQI
6th Nov 2025575 AMAQI
6th Nov 2025556 AMAQI
4°C0/12°C
6th Nov 2025537 AMAQI
6th Nov 2025688 AMAQI
6th Nov 2025719 AMAQI
6th Nov 20256410 AMAQI
6th Nov 20256111 AMAQI
6th Nov 20256312 PMAQI
6th Nov 2025651 PMAQI
6th Nov 2025672 PMAQI
6th Nov 2025733 PMAQI
6th Nov 2025754 PMAQI
6th Nov 2025765 PMAQI
6th Nov 2025816 PMAQI
6th Nov 2025787 PMAQI
6th Nov 2025778 PMAQI
6th Nov 2025759 PMAQI
6th Nov 20257310 PMAQI
6th Nov 20257411 PMAQI
7th Nov 20257212 AMAQI
7th Nov 2025681 AMAQI
7th Nov 2025632 AMAQI
7th Nov 2025563 AMAQI
7th Nov 2025584 AMAQI
7th Nov 2025585 AMAQI
7th Nov 2025576 AMAQI
3°C0/11°C
7th Nov 2025577 AMAQI
7th Nov 2025578 AMAQI
7th Nov 2025609 AMAQI
7th Nov 20256010 AMAQI
7th Nov 20255911 AMAQI
7th Nov 20256012 PMAQI
7th Nov 2025631 PMAQI
7th Nov 2025622 PMAQI
7th Nov 2025643 PMAQI
7th Nov 2025684 PMAQI
7th Nov 2025695 PMAQI
7th Nov 2025716 PMAQI
7th Nov 2025717 PMAQI
7th Nov 2025728 PMAQI
7th Nov 2025739 PMAQI
7th Nov 20257910 PMAQI
7th Nov 20257811 PMAQI
8th Nov 20257812 AMAQI
8th Nov 2025791 AMAQI
8th Nov 2025782 AMAQI
8th Nov 2025613 AMAQI
8th Nov 2025574 AMAQI
8th Nov 2025615 AMAQI
8th Nov 2025616 AMAQI
3°C0/10°C
8th Nov 2025597 AMAQI
8th Nov 2025578 AMAQI
8th Nov 2025599 AMAQI
8th Nov 20255910 AMAQI
8th Nov 20255911 AMAQI
8th Nov 20256112 PMAQI
8th Nov 2025611 PMAQI
8th Nov 2025602 PMAQI
8th Nov 2025603 PMAQI
8th Nov 2025624 PMAQI
8th Nov 2025655 PMAQI
8th Nov 2025706 PMAQI
8th Nov 2025727 PMAQI
8th Nov 2025758 PMAQI
8th Nov 2025779 PMAQI
8th Nov 20257410 PMAQI
8th Nov 20257311 PMAQI
9th Nov 20257712 AMAQI
9th Nov 2025751 AMAQI
9th Nov 2025722 AMAQI
9th Nov 2025683 AMAQI
9th Nov 2025694 AMAQI
9th Nov 2025705 AMAQI
9th Nov 2025666 AMAQI
2°C-1/7°C
9th Nov 2025667 AMAQI
9th Nov 2025618 AMAQI
9th Nov 2025599 AMAQI
9th Nov 20255910 AMAQI
9th Nov 20256011 AMAQI
9th Nov 20256112 PMAQI
9th Nov 2025651 PMAQI
9th Nov 2025622 PMAQI
9th Nov 2025613 PMAQI
9th Nov 2025594 PMAQI
9th Nov 2025615 PMAQI
9th Nov 2025606 PMAQI
9th Nov 2025727 PMAQI
9th Nov 2025688 PMAQI
9th Nov 2025669 PMAQI
9th Nov 20256810 PMAQI
9th Nov 20256511 PMAQI
10th Nov 20256612 AMAQI
10th Nov 2025641 AMAQI
10th Nov 2025612 AMAQI
10th Nov 2025593 AMAQI
10th Nov 2025584 AMAQI
10th Nov 2025585 AMAQI
10th Nov 2025556 AMAQI
1°C-2/6°C
10th Nov 2025567 AMAQI
10th Nov 2025558 AMAQI
10th Nov 2025549 AMAQI
10th Nov 20255510 AMAQI
10th Nov 20256111 AMAQI
10th Nov 20255312 PMAQI
10th Nov 2025501 PMAQI
10th Nov 2025502 PMAQI
10th Nov 2025513 PMAQI
10th Nov 2025544 PMAQI
10th Nov 2025555 PMAQI
10th Nov 2025566 PMAQI
10th Nov 2025577 PMAQI
10th Nov 2025588 PMAQI
10th Nov 2025599 PMAQI
10th Nov 20255810 PMAQI
10th Nov 20256011 PMAQI
11th Nov 20256212 AMAQI
11th Nov 2025621 AMAQI
11th Nov 2025602 AMAQI
11th Nov 2025573 AMAQI
11th Nov 2025554 AMAQI
11th Nov 2025585 AMAQI
11th Nov 2025546 AMAQI
2°C-1/8°C
11th Nov 2025457 AMAQI
11th Nov 2025458 AMAQI
11th Nov 2025479 AMAQI
11th Nov 20255110 AMAQI
11th Nov 20255611 AMAQI
11th Nov 20255612 PMAQI
11th Nov 2025561 PMAQI
11th Nov 2025482 PMAQI
11th Nov 2025533 PMAQI
11th Nov 2025464 PMAQI
11th Nov 2025525 PMAQI
11th Nov 2025566 PMAQI
11th Nov 2025587 PMAQI
11th Nov 2025618 PMAQI
11th Nov 2025679 PMAQI
11th Nov 20257610 PMAQI
11th Nov 20257411 PMAQI
12th Nov 20256912 AMAQI
12th Nov 2025621 AMAQI
12th Nov 2025552 AMAQI
12th Nov 2025463 AMAQI
12th Nov 2025404 AMAQI
12th Nov 2025405 AMAQI
12th Nov 2025356 AMAQI
3°C-1/8°C
12th Nov 2025347 AMAQI
12th Nov 2025378 AMAQI
12th Nov 2025399 AMAQI
12th Nov 20254510 AMAQI
12th Nov 20254711 AMAQI
12th Nov 20255112 PMAQI
12th Nov 2025531 PMAQI
12th Nov 2025592 PMAQI
12th Nov 2025653 PMAQI
12th Nov 2025764 PMAQI
12th Nov 2025815 PMAQI
12th Nov 2025856 PMAQI
12th Nov 2025817 PMAQI
12th Nov 2025808 PMAQI
12th Nov 2025809 PMAQI
12th Nov 20259410 PMAQI
12th Nov 20259811 PMAQI
13th Nov 20259812 AMAQI
13th Nov 2025831 AMAQI
13th Nov 2025652 AMAQI
13th Nov 2025573 AMAQI
13th Nov 2025564 AMAQI
13th Nov 2025555 AMAQI
13th Nov 2025486 AMAQI
4°C1/12°C
13th Nov 2025457 AMAQI
13th Nov 2025508 AMAQI
13th Nov 2025519 AMAQI
13th Nov 20255210 AMAQI
13th Nov 20255511 AMAQI
13th Nov 20255512 PMAQI
13th Nov 2025571 PMAQI
13th Nov 2025582 PMAQI
13th Nov 2025593 PMAQI
13th Nov 2025604 PMAQI
13th Nov 2025615 PMAQI
13th Nov 2025686 PMAQI
13th Nov 2025797 PMAQI
13th Nov 2025778 PMAQI
13th Nov 2025719 PMAQI
13th Nov 20256710 PMAQI
13th Nov 20256811 PMAQI
14th Nov 20256912 AMAQI
14th Nov 2025681 AMAQI
14th Nov 2025672 AMAQI
14th Nov 2025623 AMAQI
14th Nov 2025584 AMAQI
14th Nov 2025565 AMAQI
14th Nov 2025546 AMAQI
6°C2/12°C
14th Nov 2025537 AMAQI
14th Nov 2025538 AMAQI
14th Nov 2025569 AMAQI
14th Nov 20256010 AMAQI
14th Nov 20256211 AMAQI
14th Nov 20257212 PMAQI
14th Nov 2025771 PMAQI
14th Nov 2025882 PMAQI
14th Nov 20251043 PMAQI
14th Nov 20251044 PMAQI
14th Nov 20251065 PMAQI
14th Nov 20251086 PMAQI
14th Nov 2025987 PMAQI
14th Nov 20251008 PMAQI
14th Nov 2025999 PMAQI
14th Nov 20259310 PMAQI
14th Nov 20259011 PMAQI
15th Nov 20259212 AMAQI
15th Nov 2025941 AMAQI
15th Nov 2025892 AMAQI
15th Nov 2025773 AMAQI
15th Nov 2025644 AMAQI
15th Nov 2025615 AMAQI
15th Nov 2025626 AMAQI
5°C2/10°C
15th Nov 2025637 AMAQI
15th Nov 2025578 AMAQI
15th Nov 2025549 AMAQI
15th Nov 20255410 AMAQI
15th Nov 20255611 AMAQI
15th Nov 20255712 PMAQI
15th Nov 2025591 PMAQI
15th Nov 2025642 PMAQI
15th Nov 2025623 PMAQI
15th Nov 2025614 PMAQI
15th Nov 2025615 PMAQI
15th Nov 2025666 PMAQI
15th Nov 2025687 PMAQI
15th Nov 2025718 PMAQI
15th Nov 2025729 PMAQI
15th Nov 20258010 PMAQI
15th Nov 20257911 PMAQI
16th Nov 20257312 AMAQI
16th Nov 2025691 AMAQI
16th Nov 2025602 AMAQI
16th Nov 2025563 AMAQI
16th Nov 2025544 AMAQI
16th Nov 2025485 AMAQI
16th Nov 2025486 AMAQI
5°C4/8°C
16th Nov 2025437 AMAQI
16th Nov 2025488 AMAQI
16th Nov 2025499 AMAQI
16th Nov 20255110 AMAQI
16th Nov 20254311 AMAQI
16th Nov 20254412 PMAQI
16th Nov 2025441 PMAQI
16th Nov 2025482 PMAQI
16th Nov 2025533 PMAQI
16th Nov 2025554 PMAQI
16th Nov 2025575 PMAQI
16th Nov 2025626 PMAQI
16th Nov 2025647 PMAQI
16th Nov 2025648 PMAQI
16th Nov 2025659 PMAQI
16th Nov 20256310 PMAQI
16th Nov 20256111 PMAQI
17th Nov 20256112 AMAQI
17th Nov 2025611 AMAQI
17th Nov 2025602 AMAQI
17th Nov 2025583 AMAQI
17th Nov 2025544 AMAQI
17th Nov 2025565 AMAQI
17th Nov 2025566 AMAQI
4°C3/7°C
17th Nov 2025557 AMAQI
17th Nov 2025568 AMAQI
17th Nov 2025609 AMAQI
17th Nov 20256110 AMAQI
17th Nov 20256111 AMAQI
17th Nov 20256112 PMAQI
17th Nov 2025591 PMAQI
17th Nov 2025582 PMAQI
17th Nov 2025583 PMAQI
17th Nov 2025584 PMAQI
17th Nov 2025395 PMAQI
17th Nov 2025236 PMAQI
17th Nov 2025237 PMAQI
17th Nov 2025268 PMAQI
17th Nov 2025299 PMAQI
17th Nov 20253010 PMAQI
17th Nov 20253611 PMAQI
18th Nov 20254212 AMAQI
18th Nov 2025371 AMAQI
18th Nov 2025352 AMAQI
18th Nov 2025343 AMAQI
18th Nov 2025354 AMAQI
18th Nov 2025325 AMAQI
18th Nov 2025296 AMAQI
0°C-6/2°C
18th Nov 2025327 AMAQI
18th Nov 2025348 AMAQI
18th Nov 2025399 AMAQI
18th Nov 20254410 AMAQI
18th Nov 20254511 AMAQI
18th Nov 20254512 PMAQI
18th Nov 2025441 PMAQI
18th Nov 2025422 PMAQI
18th Nov 2025493 PMAQI
18th Nov 2025504 PMAQI
18th Nov 2025545 PMAQI
18th Nov 2025566 PMAQI
18th Nov 2025587 PMAQI
18th Nov 2025548 PMAQI
18th Nov 2025539 PMAQI
18th Nov 20255810 PMAQI
18th Nov 20256111 PMAQI
19th Nov 20256312 AMAQI
19th Nov 2025631 AMAQI
19th Nov 2025582 AMAQI
19th Nov 2025523 AMAQI
19th Nov 2025524 AMAQI
19th Nov 2025535 AMAQI
19th Nov 2025516 AMAQI
-5°C-8/-2°C
19th Nov 2025497 AMAQI
19th Nov 2025518 AMAQI
19th Nov 2025489 AMAQI
19th Nov 20255010 AMAQI
19th Nov 20254711 AMAQI
19th Nov 20254912 PMAQI
19th Nov 2025501 PMAQI
19th Nov 2025502 PMAQI
19th Nov 2025523 PMAQI
19th Nov 2025594 PMAQI
19th Nov 2025615 PMAQI
19th Nov 2025566 PMAQI
19th Nov 2025597 PMAQI
19th Nov 2025638 PMAQI
19th Nov 2025619 PMAQI
19th Nov 20256210 PMAQI
19th Nov 20256011 PMAQI
20th Nov 20256112 AMAQI
20th Nov 2025591 AMAQI
20th Nov 2025532 AMAQI
20th Nov 2025423 AMAQI
20th Nov 2025434 AMAQI
20th Nov 2025395 AMAQI
20th Nov 2025416 AMAQI
-5°C-8/1°C
20th Nov 2025417 AMAQI
20th Nov 2025268 AMAQI
20th Nov 2025249 AMAQI
20th Nov 20252510 AMAQI
20th Nov 20253011 AMAQI
20th Nov 20252812 PMAQI
20th Nov 2025251 PMAQI
20th Nov 2025232 PMAQI
20th Nov 2025203 PMAQI
20th Nov 2025254 PMAQI
20th Nov 2025305 PMAQI
20th Nov 2025366 PMAQI
20th Nov 2025427 PMAQI
20th Nov 2025448 PMAQI
20th Nov 2025489 PMAQI
20th Nov 20254810 PMAQI
20th Nov 20255211 PMAQI
21st Nov 20255512 AMAQI
21st Nov 2025551 AMAQI
21st Nov 2025542 AMAQI
21st Nov 2025413 AMAQI
21st Nov 2025414 AMAQI
21st Nov 2025515 AMAQI
21st Nov 2025546 AMAQI
-5°C-7/-4°C
21st Nov 2025537 AMAQI
21st Nov 2025548 AMAQI
21st Nov 2025539 AMAQI
21st Nov 20255510 AMAQI
21st Nov 20255611 AMAQI
21st Nov 20255612 PMAQI
21st Nov 2025571 PMAQI
21st Nov 2025572 PMAQI
21st Nov 2025583 PMAQI
21st Nov 2025504 PMAQI
21st Nov 2025445 PMAQI
21st Nov 2025496 PMAQI
21st Nov 2025527 PMAQI
21st Nov 2025538 PMAQI
21st Nov 2025559 PMAQI
21st Nov 20255410 PMAQI
21st Nov 20255311 PMAQI
22nd Nov 20255312 AMAQI
22nd Nov 2025561 AMAQI
22nd Nov 2025602 AMAQI
22nd Nov 2025623 AMAQI
22nd Nov 2025614 AMAQI
22nd Nov 2025615 AMAQI
22nd Nov 2025626 AMAQI
-8°C-12/-6°C
22nd Nov 2025627 AMAQI
22nd Nov 2025638 AMAQI
22nd Nov 2025639 AMAQI
22nd Nov 20256310 AMAQI
22nd Nov 20256311 AMAQI
22nd Nov 20256412 PMAQI
22nd Nov 2025641 PMAQI
22nd Nov 2025652 PMAQI
22nd Nov 2025653 PMAQI
22nd Nov 2025634 PMAQI
22nd Nov 2025645 PMAQI
22nd Nov 2025636 PMAQI
22nd Nov 2025667 PMAQI
22nd Nov 2025688 PMAQI
22nd Nov 2025749 PMAQI
22nd Nov 20257610 PMAQI
22nd Nov 20257911 PMAQI
23rd Nov 20258012 AMAQI
23rd Nov 2025791 AMAQI
23rd Nov 2025712 AMAQI
23rd Nov 2025713 AMAQI
23rd Nov 2025714 AMAQI
23rd Nov 2025725 AMAQI
23rd Nov 2025696 AMAQI
-12°C-16/-7°C
23rd Nov 2025657 AMAQI
23rd Nov 2025628 AMAQI
23rd Nov 2025609 AMAQI
23rd Nov 20256010 AMAQI
23rd Nov 20255611 AMAQI
23rd Nov 20255212 PMAQI
23rd Nov 2025541 PMAQI
23rd Nov 2025542 PMAQI
23rd Nov 2025543 PMAQI
23rd Nov 2025614 PMAQI
23rd Nov 2025625 PMAQI
23rd Nov 2025646 PMAQI
23rd Nov 2025617 PMAQI
23rd Nov 2025658 PMAQI
23rd Nov 2025679 PMAQI
23rd Nov 20256410 PMAQI
23rd Nov 20256411 PMAQI
24th Nov 20255812 AMAQI
24th Nov 2025581 AMAQI
24th Nov 2025542 AMAQI
24th Nov 2025563 AMAQI
24th Nov 2025534 AMAQI
24th Nov 2025485 AMAQI
24th Nov 2025426 AMAQI
-8°C-16/0°C
24th Nov 2025457 AMAQI
24th Nov 2025398 AMAQI
24th Nov 2025429 AMAQI
24th Nov 20255110 AMAQI
24th Nov 20255711 AMAQI
24th Nov 20256412 PMAQI
24th Nov 2025681 PMAQI
24th Nov 2025542 PMAQI
24th Nov 2025383 PMAQI
24th Nov 2025474 PMAQI
24th Nov 2025535 PMAQI
24th Nov 2025616 PMAQI
24th Nov 2025687 PMAQI
24th Nov 2025628 PMAQI
24th Nov 2025519 PMAQI
24th Nov 20254610 PMAQI
24th Nov 20255111 PMAQI
25th Nov 20255912 AMAQI
25th Nov 2025561 AMAQI
25th Nov 2025542 AMAQI
25th Nov 2025283 AMAQI
25th Nov 2025244 AMAQI
25th Nov 2025275 AMAQI
25th Nov 2025266 AMAQI
-3°C-6/1°C
25th Nov 2025247 AMAQI
25th Nov 2025278 AMAQI
25th Nov 2025289 AMAQI
25th Nov 20252910 AMAQI
25th Nov 20253111 AMAQI
25th Nov 20253412 PMAQI
25th Nov 2025321 PMAQI
25th Nov 2025332 PMAQI
25th Nov 2025433 PMAQI
25th Nov 2025384 PMAQI
25th Nov 2025275 PMAQI
25th Nov 2025276 PMAQI
25th Nov 2025347 PMAQI
25th Nov 2025368 PMAQI
25th Nov 2025399 PMAQI
25th Nov 20253410 PMAQI
25th Nov 20253011 PMAQI
26th Nov 20253612 AMAQI
26th Nov 2025351 AMAQI
26th Nov 2025232 AMAQI
26th Nov 2025213 AMAQI
26th Nov 2025224 AMAQI
26th Nov 2025235 AMAQI
26th Nov 2025276 AMAQI
-3°C-5/-2°C
26th Nov 2025297 AMAQI
26th Nov 2025328 AMAQI
26th Nov 2025379 AMAQI
26th Nov 20253710 AMAQI
26th Nov 20253511 AMAQI
26th Nov 20253712 PMAQI
26th Nov 2025401 PMAQI
26th Nov 2025432 PMAQI
26th Nov 2025493 PMAQI
26th Nov 2025514 PMAQI
26th Nov 2025525 PMAQI
26th Nov 2025536 PMAQI
26th Nov 2025537 PMAQI
26th Nov 2025538 PMAQI
26th Nov 2025539 PMAQI
26th Nov 20255610 PMAQI
26th Nov 20255611 PMAQI
27th Nov 20255612 AMAQI
27th Nov 2025571 AMAQI
27th Nov 2025582 AMAQI
27th Nov 2025553 AMAQI
27th Nov 2025544 AMAQI
27th Nov 2025555 AMAQI
27th Nov 2025556 AMAQI
-5°C-8/-3°C
27th Nov 2025557 AMAQI
7 AM27th Nov 2025548 AMAQI
27th Nov 2025569 AMAQI
27th Nov 20255810 AMAQI
27th Nov 20255811 AMAQI
11 AM27th Nov 20255912 PMAQI
27th Nov 2025611 PMAQI
27th Nov 2025592 PMAQI
27th Nov 2025563 PMAQI
27th Nov 2025554 PMAQI
4 PM27th Nov 2025475 PMAQI
27th Nov 2025406 PMAQI
27th Nov 2025487 PMAQI
27th Nov 2025518 PMAQI
27th Nov 2025529 PMAQI
11 PM
6 AM
--°C/°C
Day time
Avg. Highest Time
4 PM
54AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
7 AM - 3 PM
50AQI
9 hours / Day
270 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 PM to 4 PM (Avg. 54), while the lowest AQI was between 7 AM to 3 PM (Avg. 50).
Night time
Avg. Highest Time
10 PM - 11 PM
64AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
4 AM - 6 AM
49AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 11 PM (Avg. 64), while the lowest AQI was between 4 AM to 6 AM (Avg. 49).
2025 Days Vs Air Quality
Chi, Chur, Graubunden, Switzerland
2025
69%
229
30%
99
0.6%
2
Total number of days with different AQI categories in last 331 days in 2025 (34 days remaining)
Good
229 DaysModerate
99 DaysPoor
2 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 69%
Health Risk Level:
Moderate
In 2025, 69% of 331 days were within WHO’s safe air quality limits, and 31% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Chi, Chur, Graubunden, Switzerland
AQI levels in 2025
AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
67AQI
67AQI
2nd January 2025
67AQI
67AQI
3rd January 2025
60AQI
60AQI
4th January 2025
59AQI
59AQI
5th January 2025
58AQI
58AQI
6th January 2025
53AQI
53AQI
7th January 2025
47AQI
47AQI
8th January 2025
42AQI
42AQI
9th January 2025
35AQI
35AQI
10th January 2025
32AQI
32AQI
11th January 2025
35AQI
35AQI
12th January 2025
36AQI
36AQI
13th January 2025
43AQI
43AQI
14th January 2025
51AQI
51AQI
15th January 2025
56AQI
56AQI
16th January 2025
56AQI
56AQI
17th January 2025
58AQI
58AQI
18th January 2025
59AQI
59AQI
19th January 2025
61AQI
61AQI
20th January 2025
61AQI
61AQI
21st January 2025
61AQI
61AQI
22nd January 2025
60AQI
60AQI
23rd January 2025
57AQI
57AQI
24th January 2025
55AQI
55AQI
25th January 2025
51AQI
51AQI
26th January 2025
45AQI
45AQI
27th January 2025
39AQI
39AQI
28th January 2025
36AQI
36AQI
29th January 2025
32AQI
32AQI
30th January 2025
33AQI
33AQI
31st January 2025
33AQI
33AQI
1st February 2025
39AQI
39AQI
2nd February 2025
46AQI
46AQI
3rd February 2025
48AQI
48AQI
4th February 2025
53AQI
53AQI
5th February 2025
57AQI
57AQI
6th February 2025
59AQI
59AQI
7th February 2025
58AQI
58AQI
8th February 2025
58AQI
58AQI
9th February 2025
58AQI
58AQI
10th February 2025
62AQI
62AQI
11th February 2025
65AQI
65AQI
12th February 2025
64AQI
64AQI
13th February 2025
61AQI
61AQI
14th February 2025
58AQI
58AQI
15th February 2025
60AQI
60AQI
16th February 2025
61AQI
61AQI
17th February 2025
61AQI
61AQI
18th February 2025
63AQI
63AQI
19th February 2025
65AQI
65AQI
20th February 2025
66AQI
66AQI
21st February 2025
63AQI
63AQI
22nd February 2025
60AQI
60AQI
23rd February 2025
59AQI
59AQI
24th February 2025
57AQI
57AQI
25th February 2025
55AQI
55AQI
26th February 2025
52AQI
52AQI
27th February 2025
47AQI
47AQI
28th February 2025
42AQI
42AQI
1st March 2025
42AQI
42AQI
2nd March 2025
44AQI
44AQI
3rd March 2025
45AQI
45AQI
4th March 2025
48AQI
48AQI
5th March 2025
51AQI
51AQI
6th March 2025
51AQI
51AQI
7th March 2025
52AQI
52AQI
8th March 2025
52AQI
52AQI
9th March 2025
51AQI
51AQI
10th March 2025
49AQI
49AQI
11th March 2025
47AQI
47AQI
12th March 2025
44AQI
44AQI
13th March 2025
40AQI
40AQI
14th March 2025
37AQI
37AQI
15th March 2025
36AQI
36AQI
16th March 2025
34AQI
34AQI
17th March 2025
34AQI
34AQI
18th March 2025
36AQI
36AQI
19th March 2025
38AQI
38AQI
20th March 2025
39AQI
39AQI
21st March 2025
38AQI
38AQI
22nd March 2025
38AQI
38AQI
23rd March 2025
35AQI
35AQI
24th March 2025
33AQI
33AQI
25th March 2025
31AQI
31AQI
26th March 2025
34AQI
34AQI
27th March 2025
35AQI
35AQI
28th March 2025
35AQI
35AQI
29th March 2025
38AQI
38AQI
30th March 2025
35AQI
35AQI
31st March 2025
32AQI
32AQI
1st April 2025
31AQI
31AQI
2nd April 2025
31AQI
31AQI
3rd April 2025
33AQI
33AQI
4th April 2025
34AQI
34AQI
5th April 2025
30AQI
30AQI
6th April 2025
26AQI
26AQI
7th April 2025
24AQI
24AQI
8th April 2025
27AQI
27AQI
9th April 2025
31AQI
31AQI
10th April 2025
33AQI
33AQI
11th April 2025
32AQI
32AQI
12th April 2025
29AQI
29AQI
13th April 2025
32AQI
32AQI
14th April 2025
28AQI
28AQI
15th April 2025
28AQI
28AQI
16th April 2025
23AQI
23AQI
17th April 2025
21AQI
21AQI
18th April 2025
17AQI
17AQI
19th April 2025
19AQI
19AQI
20th April 2025
19AQI
19AQI
21st April 2025
16AQI
16AQI
22nd April 2025
16AQI
16AQI
23rd April 2025
20AQI
20AQI
24th April 2025
16AQI
16AQI
25th April 2025
16AQI
16AQI
26th April 2025
19AQI
19AQI
27th April 2025
24AQI
24AQI
28th April 2025
26AQI
26AQI
29th April 2025
27AQI
27AQI
30th April 2025
27AQI
27AQI
1st May 2025
32AQI
32AQI
2nd May 2025
44AQI
44AQI
3rd May 2025
40AQI
40AQI
4th May 2025
36AQI
36AQI
5th May 2025
22AQI
22AQI
6th May 2025
21AQI
21AQI
7th May 2025
25AQI
25AQI
8th May 2025
33AQI
33AQI
9th May 2025
40AQI
40AQI
10th May 2025
30AQI
30AQI
11th May 2025
26AQI
26AQI
12th May 2025
24AQI
24AQI
13th May 2025
25AQI
25AQI
14th May 2025
28AQI
28AQI
15th May 2025
32AQI
32AQI
16th May 2025
25AQI
25AQI
17th May 2025
23AQI
23AQI
18th May 2025
28AQI
28AQI
19th May 2025
29AQI
29AQI
20th May 2025
36AQI
36AQI
21st May 2025
36AQI
36AQI
22nd May 2025
28AQI
28AQI
23rd May 2025
23AQI
23AQI
24th May 2025
22AQI
22AQI
25th May 2025
21AQI
21AQI
26th May 2025
21AQI
21AQI
27th May 2025
20AQI
20AQI
28th May 2025
21AQI
21AQI
29th May 2025
23AQI
23AQI
30th May 2025
40AQI
40AQI
31st May 2025
32AQI
32AQI
1st June 2025
35AQI
35AQI
2nd June 2025
37AQI
37AQI
3rd June 2025
36AQI
36AQI
4th June 2025
39AQI
39AQI
5th June 2025
41AQI
41AQI
6th June 2025
41AQI
41AQI
7th June 2025
34AQI
34AQI
8th June 2025
42AQI
42AQI
9th June 2025
58AQI
58AQI
10th June 2025
61AQI
61AQI
11th June 2025
65AQI
65AQI
12th June 2025
63AQI
63AQI
13th June 2025
58AQI
58AQI
14th June 2025
55AQI
55AQI
15th June 2025
54AQI
54AQI
16th June 2025
47AQI
47AQI
17th June 2025
38AQI
38AQI
18th June 2025
42AQI
42AQI
19th June 2025
45AQI
45AQI
20th June 2025
51AQI
51AQI
21st June 2025
46AQI
46AQI
22nd June 2025
48AQI
48AQI
23rd June 2025
44AQI
44AQI
24th June 2025
42AQI
42AQI
25th June 2025
46AQI
46AQI
26th June 2025
48AQI
48AQI
27th June 2025
37AQI
37AQI
28th June 2025
37AQI
37AQI
29th June 2025
39AQI
39AQI
30th June 2025
41AQI
41AQI
1st July 2025
37AQI
37AQI
2nd July 2025
33AQI
33AQI
3rd July 2025
35AQI
35AQI
4th July 2025
38AQI
38AQI
5th July 2025
38AQI
38AQI
6th July 2025
43AQI
43AQI
7th July 2025
28AQI
28AQI
8th July 2025
21AQI
21AQI
9th July 2025
20AQI
20AQI
10th July 2025
29AQI
29AQI
11th July 2025
31AQI
31AQI
12th July 2025
34AQI
34AQI
13th July 2025
47AQI
47AQI
14th July 2025
35AQI
35AQI
15th July 2025
28AQI
28AQI
16th July 2025
28AQI
28AQI
17th July 2025
23AQI
23AQI
18th July 2025
21AQI
21AQI
19th July 2025
24AQI
24AQI
20th July 2025
26AQI
26AQI
21st July 2025
22AQI
22AQI
22nd July 2025
17AQI
17AQI
23rd July 2025
17AQI
17AQI
24th July 2025
17AQI
17AQI
25th July 2025
17AQI
17AQI
26th July 2025
20AQI
20AQI
27th July 2025
20AQI
20AQI
28th July 2025
19AQI
19AQI
29th July 2025
20AQI
20AQI
30th July 2025
22AQI
22AQI
31st July 2025
22AQI
22AQI
1st August 2025
23AQI
23AQI
2nd August 2025
22AQI
22AQI
3rd August 2025
20AQI
20AQI
4th August 2025
22AQI
22AQI
5th August 2025
23AQI
23AQI
6th August 2025
24AQI
24AQI
7th August 2025
25AQI
25AQI
8th August 2025
31AQI
31AQI
9th August 2025
40AQI
40AQI
10th August 2025
49AQI
49AQI
11th August 2025
53AQI
53AQI
12th August 2025
58AQI
58AQI
13th August 2025
60AQI
60AQI
14th August 2025
57AQI
57AQI
15th August 2025
56AQI
56AQI
16th August 2025
58AQI
58AQI
17th August 2025
54AQI
54AQI
18th August 2025
51AQI
51AQI
19th August 2025
49AQI
49AQI
20th August 2025
45AQI
45AQI
21st August 2025
33AQI
33AQI
22nd August 2025
27AQI
27AQI
23rd August 2025
29AQI
29AQI
24th August 2025
26AQI
26AQI
25th August 2025
26AQI
26AQI
26th August 2025
29AQI
29AQI
27th August 2025
40AQI
40AQI
28th August 2025
41AQI
41AQI
29th August 2025
22AQI
22AQI
30th August 2025
17AQI
17AQI
31st August 2025
16AQI
16AQI
1st September 2025
16AQI
16AQI
2nd September 2025
15AQI
15AQI
3rd September 2025
17AQI
17AQI
4th September 2025
25AQI
25AQI
5th September 2025
18AQI
18AQI
6th September 2025
16AQI
16AQI
7th September 2025
19AQI
19AQI
8th September 2025
24AQI
24AQI
9th September 2025
27AQI
27AQI
10th September 2025
24AQI
24AQI
11th September 2025
20AQI
20AQI
12th September 2025
19AQI
19AQI
13th September 2025
18AQI
18AQI
14th September 2025
18AQI
18AQI
15th September 2025
17AQI
17AQI
16th September 2025
19AQI
19AQI
17th September 2025
19AQI
19AQI
18th September 2025
20AQI
20AQI
19th September 2025
23AQI
23AQI
20th September 2025
26AQI
26AQI
21st September 2025
28AQI
28AQI
22nd September 2025
21AQI
21AQI
23rd September 2025
18AQI
18AQI
24th September 2025
17AQI
17AQI
25th September 2025
12AQI
12AQI
26th September 2025
46AQI
46AQI
27th September 2025
149AQI
149AQI
28th September 2025
127AQI
127AQI
29th September 2025
44AQI
44AQI
30th September 2025
49AQI
49AQI
1st October 2025
53AQI
53AQI
2nd October 2025
57AQI
57AQI
3rd October 2025
58AQI
58AQI
4th October 2025
52AQI
52AQI
5th October 2025
37AQI
37AQI
6th October 2025
43AQI
43AQI
7th October 2025
48AQI
48AQI
8th October 2025
58AQI
58AQI
9th October 2025
71AQI
71AQI
10th October 2025
58AQI
58AQI
11th October 2025
58AQI
58AQI
12th October 2025
60AQI
60AQI
13th October 2025
70AQI
70AQI
14th October 2025
69AQI
69AQI
15th October 2025
69AQI
69AQI
16th October 2025
69AQI
69AQI
17th October 2025
73AQI
73AQI
18th October 2025
73AQI
73AQI
19th October 2025
66AQI
66AQI
20th October 2025
66AQI
66AQI
21st October 2025
59AQI
59AQI
22nd October 2025
46AQI
46AQI
23rd October 2025
37AQI
37AQI
24th October 2025
29AQI
29AQI
25th October 2025
33AQI
33AQI
26th October 2025
29AQI
29AQI
27th October 2025
28AQI
28AQI
28th October 2025
39AQI
39AQI
29th October 2025
47AQI
47AQI
30th October 2025
49AQI
49AQI
31st October 2025
51AQI
51AQI
1st November 2025
57AQI
57AQI
2nd November 2025
41AQI
41AQI
3rd November 2025
32AQI
32AQI
4th November 2025
49AQI
49AQI
5th November 2025
61AQI
61AQI
6th November 2025
68AQI
68AQI
7th November 2025
65AQI
65AQI
8th November 2025
67AQI
67AQI
9th November 2025
66AQI
66AQI
10th November 2025
57AQI
57AQI
11th November 2025
57AQI
57AQI
12th November 2025
62AQI
62AQI
13th November 2025
63AQI
63AQI
14th November 2025
78AQI
78AQI
15th November 2025
69AQI
69AQI
16th November 2025
56AQI
56AQI
17th November 2025
48AQI
48AQI
18th November 2025
45AQI
45AQI
19th November 2025
55AQI
55AQI
20th November 2025
39AQI
39AQI
21st November 2025
52AQI
52AQI
22nd November 2025
64AQI
64AQI
23rd November 2025
65AQI
65AQI
24th November 2025
53AQI
53AQI
25th November 2025
34AQI
34AQI
26th November 2025
40AQI
40AQI
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025
50AQI
57AQI
40AQI
25AQI
29AQI
46AQI
27AQI
36AQI
30AQI
53AQI
56AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202541AQI
13
18
5
23
26
5
30
31
22
8
31
23
8
28
2
12
19
8
18
229
99
2
Highest AQI recorded in
February57AQI
Lowest AQI recorded in
April25AQI
202426AQI
31
29
29
2
30
30
1
29
1
31
31
30
31
30
21
10
352
14
Highest AQI recorded in
December45AQI
Lowest AQI recorded in
October18AQI
202323AQI
31
28
31
30
31
30
31
31
30
29
29
31
362
Highest AQI recorded in
June36AQI
Lowest AQI recorded in
November16AQI
202224AQI
31
21
28
3
30
31
30
23
2
29
31
30
31
317
3
Highest AQI recorded in
March36AQI
Lowest AQI recorded in
November17AQI
202123AQI
30
25
2
1
31
30
31
29
1
31
31
30
31
30
31
360
3
1
Highest AQI recorded in
June30AQI
Lowest AQI recorded in
November16AQI
202022AQI
13
21
18
30
31
31
30
30
28
31
263
Highest AQI recorded in
April31AQI
Lowest AQI recorded in
October14AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
41AQILeast Polluted Year Recorded
2020(Avg.)
22AQIChi's annual 2025 AQI (41) shows an average percentage change of 72.09% (worsened AQI) compared to previous years: 2020 (22), 2021 (23), 2022 (24), 2023 (23), 2024 (26).
