Air at the HUM (otok Vis) station
Komiža, Croatia
Network: Državna mreža za trajno praćenje kvalitete zraka · Station code: HR0018A
This year, up to the last reading (September 29)
at least
98 days
with an 8-hour average of ozone (O₃) above the target value of 120 µg/m³.
The target value allows 25 such days a year, averaged over three years.
Worst day: April 27, 2026, O₃ 162 µg/m³ as a daily average, 1.3 times the limit.
Daily average for 246 of 279 days · data for 2026 not yet finally verified · Yardstick: EU limits (Directive 2008/50/EC)
No data has arrived from this station since September 29, 2026 at 14:00
No reading for 8 days.
We take the readings from the European Environment Agency (EEA), and no new values for this station are coming from there. The cause may lie with the station itself or with the data transmission.
Last reading: September 29, 2026 at 14:00
Measured then: O₃ 123.2 µg/m³
Nearest station measuring now: Split-3, Split, Croatia, about 59 km away.
That reading is from another place. Your air may be better or worse.
How the air is changing
There are not enough readings to compare with the week before.
- O₃: too few readings to compare
Last month there was less O₃ in the air than the month before.
- O₃: average 102 µg/m³, month before 117.1 µg/m³
Ozone O₃
no measurement
Now
too few readings
Last 24 hours
measured in 0 % of hours
too few readings
Last 7 days
measured in 0 % of hours
too few readings
Last 30 days
measured in 74 % of hours · provisional
too few readings
Last 12 months
measured in 89 % of hours · 1 month with too few readings · provisional
Days in 2026: O₃, 8-hour average above 120 µg/m³
98 days above the limit. 10 days without any reading from the station.
- above the limit
- below the limit
- too few readings for the day
- no data from the station
Days above the limit with values (98)
- Mar 25 124
- Mar 26 121
- Mar 27 124
- Apr 8 130
- Apr 9 121
- Apr 10 128
- Apr 11 134
- Apr 12 135
- Apr 13 121
- Apr 18 125
- Apr 19 133
- Apr 20 134
- Apr 23 130
- Apr 24 139
- Apr 25 140
- Apr 26 158
- Apr 27 162
- Apr 28 158
- Apr 29 150
- Apr 30 126
- May 2 133
- May 3 142
- May 4 144
- May 5 137
- May 13 121
- May 14 129
- May 20 127
- May 21 124
- May 24 136
- May 25 140
- May 26 152
- May 28 144
- May 29 137
- May 30 152
- May 31 156
- Jun 1 137
- Jun 2 125
- Jun 10 124
- Jun 14 131
- Jun 15 121
- Jun 16 121
- Jun 17 120
- Jun 19 120
- Jun 21 128
- Jun 22 135
- Jun 23 133
- Jun 24 128
- Jun 25 136
- Jun 26 134
- Jun 30 140
- Jul 1 142
- Jul 2 146
- Jul 4 127
- Jul 5 135
- Jul 6 133
- Jul 7 130
- Jul 8 140
- Jul 9 143
- Jul 11 131
- Jul 12 144
- Jul 13 139
- Jul 14 133
- Jul 15 136
- Jul 16 145
- Jul 17 142
- Jul 18 138
- Jul 19 144
- Jul 20 135
- Jul 21 147
- Jul 22 134
- Jul 23 127
- Jul 24 126
- Jul 27 138
- Jul 28 145
- Jul 29 139
- Jul 30 144
- Jul 31 142
- Aug 1 139
- Aug 2 135
- Aug 3 133
- Aug 4 124
- Aug 6 128
- Aug 7 144
- Aug 8 153
- Aug 9 138
- Aug 10 132
- Aug 15 138
- Aug 16 137
- Aug 17 140
- Aug 18 128
- Aug 19 132
- Aug 20 132
- Sep 3 132
- Sep 4 127
- Sep 6 138
- Sep 7 135
- Sep 8 126
- Sep 19 122
Values in µg/m³, limit 120 µg/m³.
Months of 2026
| Month | Days above 120 | Highest 8 h | No readings |
|---|---|---|---|
| January | 0 | 103 | 0 |
| February | 0 | 107 | 0 |
| March | 3 above the number allowed | 124 | 0 |
| April | 17 above the number allowed | 162 | 1 |
| May | 15 above the number allowed | 156 | 0 |
| June | 15 above the number allowed | 140 | 0 |
| July | 27 above the number allowed | 147 | 0 |
| August | 15 above the number allowed | 153 | 2 |
| September | 6 above the number allowed | 138 | 1 |
| October up to yesterday | 6 |
Values in µg/m³. ■ marks a month with at least one day above the limit; the number allowed applies to the whole year. “No readings”: days on which not a single reading came from the station.
Values as a table
| Hour to | µg/m³ | Note |
|---|---|---|
| Wednesday, 10/7 | ||
| 22:00 | 115 | model estimate, not counted |
| 21:00 | 116 | model estimate, not counted |
| 20:00 | 114 | model estimate, not counted |
| 19:00 | 115 | model estimate, not counted |
| 18:00 | 116 | model estimate, not counted |
| 17:00 | 115 | model estimate, not counted |
| 16:00 | 114 | model estimate, not counted |
| 15:00 | 114 | model estimate, not counted |
| 14:00 | 112 | model estimate, not counted |
| 13:00 | 112 | model estimate, not counted |
| 12:00 | 110 | model estimate, not counted |
| 11:00 | 109 | model estimate, not counted |
| 10:00 | 108 | model estimate, not counted |
| 09:00 | 108 | model estimate, not counted |
| 08:00 | 107 | model estimate, not counted |
| 07:00 | 110 | model estimate, not counted |
| 06:00 | 110 | model estimate, not counted |
| 05:00 | 110 | model estimate, not counted |
| 04:00 | 110 | model estimate, not counted |
| 03:00 | 109 | model estimate, not counted |
| 02:00 | 109 | model estimate, not counted |
| 01:00 | 108 | model estimate, not counted |
| Tuesday, 10/6 | ||
| 00:00 | 108 | model estimate, not counted |
| 23:00 | 108 | model estimate, not counted |
| 22:00 | 108 | model estimate, not counted |
| 21:00 | 108 | model estimate, not counted |
| 20:00 | 108 | model estimate, not counted |
| 19:00 | 108 | model estimate, not counted |
| 18:00 | 108 | model estimate, not counted |
| 17:00 | 108 | model estimate, not counted |
| 16:00 | 108 | model estimate, not counted |
| 15:00 | 108 | model estimate, not counted |
| 14:00 | 108 | model estimate, not counted |
| 13:00 | 108 | model estimate, not counted |
| 12:00 | 108 | model estimate, not counted |
| 11:00 | 108 | model estimate, not counted |
| 10:00 | 108 | model estimate, not counted |
| 09:00 | 108 | model estimate, not counted |
| 08:00 | 108 | model estimate, not counted |
| 07:00 | 108 | model estimate, not counted |
| 06:00 | 108 | model estimate, not counted |
| 05:00 | 108 | model estimate, not counted |
| 04:00 | 108 | model estimate, not counted |
| 03:00 | 108 | model estimate, not counted |
| 02:00 | 108 | model estimate, not counted |
| 01:00 | 108 | model estimate, not counted |
| Monday, 10/5 | ||
| 00:00 | 108 | model estimate, not counted |
| 23:00 | 108 | model estimate, not counted |
| 22:00 | 108 | model estimate, not counted |
| 21:00 | 108 | model estimate, not counted |
| 20:00 | 108 | model estimate, not counted |
| 19:00 | 108 | model estimate, not counted |
| 18:00 | 108 | model estimate, not counted |
| 17:00 | 108 | model estimate, not counted |
| 16:00 | 108 | model estimate, not counted |
| 15:00 | 108 | model estimate, not counted |
| 14:00 | 108 | model estimate, not counted |
| 13:00 | 108 | model estimate, not counted |
| 12:00 | 108 | model estimate, not counted |
| 11:00 | 108 | model estimate, not counted |
| 10:00 | 108 | model estimate, not counted |
| 09:00 | 108 | model estimate, not counted |
| 08:00 | 108 | model estimate, not counted |
| 07:00 | 108 | model estimate, not counted |
| 06:00 | 108 | model estimate, not counted |
| 05:00 | 108 | model estimate, not counted |
| 04:00 | 108 | model estimate, not counted |
| 03:00 | 108 | model estimate, not counted |
| 02:00 | 108 | model estimate, not counted |
| 01:00 | 108 | model estimate, not counted |
| Sunday, 10/4 | ||
| 00:00 | 108 | model estimate, not counted |
| 23:00 | 108 | model estimate, not counted |
| 22:00 | 108 | model estimate, not counted |
| 21:00 | 108 | model estimate, not counted |
| 20:00 | 108 | model estimate, not counted |
| 19:00 | 108 | model estimate, not counted |
| 18:00 | 108 | model estimate, not counted |
| 17:00 | 108 | model estimate, not counted |
| 16:00 | 108 | model estimate, not counted |
| 15:00 | 108 | model estimate, not counted |
| 14:00 | 108 | model estimate, not counted |
| 13:00 | 108 | model estimate, not counted |
| 12:00 | 108 | model estimate, not counted |
| 11:00 | 108 | model estimate, not counted |
| 10:00 | 108 | model estimate, not counted |
| 09:00 | 108 | model estimate, not counted |
| 08:00 | 108 | model estimate, not counted |
| 07:00 | 108 | model estimate, not counted |
| 06:00 | 108 | model estimate, not counted |
| 05:00 | 115 | model estimate, not counted |
| 04:00 | 115 | model estimate, not counted |
| 03:00 | 115 | model estimate, not counted |
| 02:00 | 115 | model estimate, not counted |
| 01:00 | 115 | model estimate, not counted |
| Saturday, 10/3 | ||
| 00:00 | 115 | model estimate, not counted |
| 23:00 | 115 | model estimate, not counted |
| 22:00 | 115 | model estimate, not counted |
| 21:00 | 115 | model estimate, not counted |
| 20:00 | 115 | model estimate, not counted |
| 19:00 | 115 | model estimate, not counted |
| 18:00 | 115 | model estimate, not counted |
| 17:00 | 115 | model estimate, not counted |
| 16:00 | 115 | model estimate, not counted |
| 15:00 | 115 | model estimate, not counted |
| 14:00 | 115 | model estimate, not counted |
| 13:00 | 115 | model estimate, not counted |
| 12:00 | 115 | model estimate, not counted |
| 11:00 | 115 | model estimate, not counted |
| 10:00 | 115 | model estimate, not counted |
| 09:00 | 115 | model estimate, not counted |
| 08:00 | 115 | model estimate, not counted |
| 07:00 | 115 | model estimate, not counted |
| 06:00 | 115 | model estimate, not counted |
| 05:00 | 115 | model estimate, not counted |
| 04:00 | 115 | model estimate, not counted |
| 03:00 | 115 | model estimate, not counted |
| 02:00 | 115 | model estimate, not counted |
| 01:00 | 115 | model estimate, not counted |
| Friday, 10/2 | ||
| 00:00 | 115 | model estimate, not counted |
| 23:00 | 115 | model estimate, not counted |
| 22:00 | 115 | model estimate, not counted |
| 21:00 | 115 | model estimate, not counted |
| 20:00 | 115 | model estimate, not counted |
| 19:00 | 115 | model estimate, not counted |
| 18:00 | 115 | model estimate, not counted |
| 17:00 | 115 | model estimate, not counted |
| 16:00 | 115 | model estimate, not counted |
| 15:00 | 115 | model estimate, not counted |
| 14:00 | 115 | model estimate, not counted |
| 13:00 | 115 | model estimate, not counted |
| 12:00 | 115 | model estimate, not counted |
| 11:00 | 115 | model estimate, not counted |
| 10:00 | 115 | model estimate, not counted |
| 09:00 | 115 | model estimate, not counted |
| 08:00 | 115 | model estimate, not counted |
| 07:00 | 115 | model estimate, not counted |
| 06:00 | 115 | model estimate, not counted |
| 05:00 | 115 | model estimate, not counted |
| 04:00 | 115 | model estimate, not counted |
| 03:00 | 115 | model estimate, not counted |
| 02:00 | 115 | model estimate, not counted |
| 01:00 | 115 | model estimate, not counted |
| Thursday, 10/1 | ||
| 00:00 | 115 | model estimate, not counted |
| 23:00 | 115 | model estimate, not counted |
| 22:00 | 115 | model estimate, not counted |
| 21:00 | 115 | model estimate, not counted |
| 20:00 | 115 | model estimate, not counted |
| 19:00 | 115 | model estimate, not counted |
| 18:00 | 115 | model estimate, not counted |
| 17:00 | 115 | model estimate, not counted |
| 16:00 | 115 | model estimate, not counted |
| 15:00 | 115 | model estimate, not counted |
| 14:00 | 115 | model estimate, not counted |
| 13:00 | 115 | model estimate, not counted |
| 12:00 | 115 | model estimate, not counted |
| 11:00 | 115 | model estimate, not counted |
| 10:00 | 115 | model estimate, not counted |
| 09:00 | 115 | model estimate, not counted |
| 08:00 | 115 | model estimate, not counted |
| 07:00 | 115 | model estimate, not counted |
| 06:00 | 115 | model estimate, not counted |
| 05:00 | 115 | model estimate, not counted |
| 04:00 | 115 | model estimate, not counted |
| 03:00 | 115 | model estimate, not counted |
| 02:00 | 115 | model estimate, not counted |
| 01:00 | 115 | model estimate, not counted |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | no data from the station | |
| Mon, 10/5 | no data from the station | |
| Sun, 10/4 | no data from the station | |
| Sat, 10/3 | no data from the station | |
| Fri, 10/2 | no data from the station | |
| Thu, 10/1 | no data from the station | |
| Wed, 9/30 | no data from the station | |
| Tue, 9/29 | too few readings | |
| Mon, 9/28 | 108.2 | provisional |
| Sun, 9/27 | 108.6 | provisional |
| Sat, 9/26 | 102.2 | provisional |
| Fri, 9/25 | 99.5 | provisional |
| Thu, 9/24 | 93.3 | provisional |
| Wed, 9/23 | 88.9 | provisional |
| Tue, 9/22 | 92.9 | provisional |
| Mon, 9/21 | 106.6 | provisional |
| Sun, 9/20 | 112.1 | provisional |
| Sat, 9/19 | 121.9 | above the limit · provisional |
| Fri, 9/18 | 116.2 | provisional |
| Thu, 9/17 | 114 | provisional |
| Wed, 9/16 | 103 | provisional |
| Tue, 9/15 | 98.6 | provisional |
| Mon, 9/14 | 101.3 | provisional |
| Sun, 9/13 | 105.7 | provisional |
| Sat, 9/12 | 100.6 | provisional |
| Fri, 9/11 | 100.3 | provisional |
| Thu, 9/10 | 107.5 | provisional |
| Wed, 9/9 | 116.1 | provisional |
| Tue, 9/8 | 126.4 | above the limit · provisional |
| Mon, 9/7 | 135.2 | above the limit · provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | too few readings | 81.1 | year before: same days · 6 days without data from the station |
| September 2026 | 102 | 92.1 | measured in 94 % of hours · provisional · 1 day without data from the station |
| August 2026 | 117.1 | 113.1 | measured in 91 % of hours · provisional · 2 days without data from the station |
| July 2026 | 124 | 112.2 | measured in 97 % of hours · provisional |
| June 2026 | 114 | 118.6 | measured in 86 % of hours · provisional |
| May 2026 | 116.7 | 106.9 | measured in 91 % of hours · provisional |
| April 2026 | 116.1 | 98.8 | measured in 93 % of hours · provisional · 1 day without data from the station |
| March 2026 | 99 | 92.5 | measured in 99 % of hours · provisional |
| February 2026 | 89.7 | 86.7 | measured in 100 % of hours · provisional |
| January 2026 | 83.8 | 78.7 | measured in 94 % of hours · provisional |
| December 2025 | 72.8 | 73.2 | measured in 97 % of hours · verified |
| November 2025 | too few readings | 77 | measured in 48 % of hours · verified · 14 days without data from the station |
O₃ by year
Yardstick: EU limits (Directive 2008/50/EC)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Days with 8-hour average above 120 µg/m³ (target value 25) | ≥ 98 | ≥ 59 | ≥ 49 |
| Annual average, µg/m³ | 106.8* | 95.5 | too few |
| Highest 8-hour average, µg/m³ | 162April 27 | 166July 5 | 149August 26 |
| Hours measured | 92 % | 92 % | 87 % |
| Days without any reading from the station | 10 | 21 | 30 |
* 2026 up to October 6; the average since the start of the year is not yet an annual average.
The monitoring networks have not yet finally verified this year’s data. The EEA publishes verified values once a year.
≥ means at least: more than a tenth of the days or hours are missing, so the real number may be higher.
■ and a figure in red: more than is allowed for the whole year.
The column for 2023 is shown on wider screens.
The worst days of 2026
| Day | Highest 8 h | Times the limit |
|---|---|---|
| Apr 27, 2026provisional | 162 | 1.3 × |
| Apr 26, 2026provisional | 158 | 1.3 × |
| Apr 28, 2026provisional | 158 | 1.3 × |
| May 31, 2026provisional | 156 | 1.3 × |
| Aug 8, 2026provisional | 153 | 1.3 × |
Daily average in µg/m³, daily limit 120 µg/m³. Days with the same unverified value over many hours are not on this list.
Outages in the last 12 months
Every period of at least 24 hours in which no reading arrived from this station.
Days without a reading: 32
7 outages, 756 hours in total in the last 12 months.
Timeline of outages from October 7, 2025 to today
| From | To | Duration |
|---|---|---|
| Sep 29, 2026 14:00 | still ongoing | 8 days |
| Aug 11, 2026 14:00 | Aug 14, 2026 09:00 | 3 days |
| Jun 27, 2026 17:00 | Jun 28, 2026 18:00 | 25 hours |
| Jun 4, 2026 09:00 | Jun 5, 2026 10:00 | 25 hours |
| Apr 5, 2026 10:00 | Apr 7, 2026 10:00 | 2 days |
| Jan 15, 2026 06:00 | Jan 16, 2026 10:00 | 28 hours |
| Nov 13, 2025 06:00 | Nov 28, 2025 08:00 | 15 days |
Calculated from the hourly values the EEA publishes. If late values arrive afterwards, an outage gets shorter or disappears.
Where the data comes from
Measured by Državna mreža za trajno praćenje kvalitete zraka. We take the values from the European Environment Agency (EEA) under the CC BY 4.0 licence.
Values marked provisional have not been fully checked by the network yet. The EEA publishes verified data for the previous year once a year, usually by the end of September.
An hourly value is the average of one hour. We show the end of the hour: the value to 18:00 was measured from 17:00 to 18:00.
A day runs from midnight to midnight local time.
We only show an average when at least three out of four hours in the period have a reading. The EU air quality directive requires this for daily averages, and we apply the same rule to longer periods. We compare an annual average with the EU limit only once 90 % of hours are measured, as the directive requires. For 12 months and for a year we ask for more: if less than 90 % of hours are measured, every full calendar month needs readings for at least half of its hours. Otherwise a whole season could be missing from the average, such as summer, when ozone is highest.
We do not call a difference of up to 10 % a change, nor one of up to 1 µg/m³ at low levels, because weather and measurement uncertainty alone cause differences that size.
When a station sends no reading, the EEA sometimes fills the hour with a model estimate. We draw those hours dashed and leave them out of every average.
The EU limits come from Directive 2008/50/EC. Here they serve as a yardstick for comparison. When more than a tenth of the days or hours are missing, the number of exceedances can only be higher, so we write “at least” in front of it.
samoEKO is a brand of samoLabs, Juelich.