ID: 1585

AQSQID: 460330132

Site Name: Wind Cave

Added: April 21, 2020, 6:24 p.m.

Updated: June 20, 2021, 9:52 p.m.

Location: Hot Spgs (Prairie Vista Trl), SD

Reporting: True, Located: True

Current AQI: 30.0

Hot Spgs (Prairie Vista Trl) SD, US: 43.557613, -103.483658

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
June 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 10.0 μg/m3 (10) 6.9 μg/m3 (29) 30.0
 
June 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 10.0 μg/m3 (10) 8.4 μg/m3 (36) 36.0
 
June 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 13.0 μg/m3 (13) 1.4 μg/m3 (6) 30.0
 
June 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 9.0 μg/m3 (9) 3.3 μg/m3 (14) 27.0
 
June 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 12.0 μg/m3 (12) 5.7 μg/m3 (24) 33.0
 
June 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 10.0 μg/m3 (10) 2.1 μg/m3 (9) 38.0
 
June 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 14.0 μg/m3 (13) 0.4 μg/m3 (2) 36.0
 
June 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 9.0 μg/m3 (9) 0.1 μg/m3 (1) 37.0
 
June 20, 2021, noon N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 8.0 μg/m3 (8) 2.1 μg/m3 (9) 39.0
 
June 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 12.0 μg/m3 (12) 0.9 μg/m3 (4) 39.0
 
June 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 12.0 μg/m3 (12) 0.9 μg/m3 (4) 40.0
 
June 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 14.0 μg/m3 (13) 3.8 μg/m3 (16) 38.0
 
June 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 18.0 μg/m3 (17) 3.3 μg/m3 (14) 39.0
 
June 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 12.0 μg/m3 (12) 4.7 μg/m3 (20) 42.0
 
June 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 29.0 μg/m3 (27) 6.5 μg/m3 (28) 43.0
 
June 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 33.0 μg/m3 (31) 5.2 μg/m3 (22) 50.0
 
June 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 31.0 μg/m3 (29) 5.7 μg/m3 (24) 50.0
 
June 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 39.0 μg/m3 (37) 5.7 μg/m3 (24) 50.0
 
June 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 37.0 μg/m3 (35) 7.2 μg/m3 (31) 50.0
 
June 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 34.0 μg/m3 (32) 7.4 μg/m3 (31) 49.0
 
June 20, 2021, midnight N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 28.0 μg/m3 (26) 8.6 μg/m3 (36) 51.0
 
June 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A 37.0 μg/m3 (35) 6.4 μg/m3 (27) 71.0
 
June 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A 34.0 μg/m3 (32) 4.9 μg/m3 (21) 71.0
 
June 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A 34.0 μg/m3 (32) 6.5 μg/m3 (28) 68.0
 
June 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 32.0 μg/m3 (30) 5.2 μg/m3 (22) 51.0
 
June 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 34.0 μg/m3 (32) 6.4 μg/m3 (27) 50.0
 
June 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 28.0 μg/m3 (26) 4.7 μg/m3 (20) 48.0
 
June 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 27.0 μg/m3 (25) 3.5 μg/m3 (15) 43.0
 
June 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 29.0 μg/m3 (27) 4.9 μg/m3 (21) 39.0
 
June 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 19.0 μg/m3 (18) 0.9 μg/m3 (4) 38.0
 
June 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 19.0 μg/m3 (18) 1.6 μg/m3 (7) 38.0
 
June 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 16.0 μg/m3 (15) 0.6 μg/m3 (3) 38.0
 
June 19, 2021, noon N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 17.0 μg/m3 (16) 1.6 μg/m3 (7) 37.0
 
June 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 15.0 μg/m3 (14) 2.1 μg/m3 (9) 37.0
 
June 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 10.0 μg/m3 (10) 2.6 μg/m3 (11) 38.0
 
June 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 10.0 μg/m3 (10) 2.2 μg/m3 (10) 38.0
 
June 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 13.0 μg/m3 (13) 2.4 μg/m3 (10) 39.0
 
June 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 13.0 μg/m3 (13) 3.1 μg/m3 (13) 39.0
 
June 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 13.0 μg/m3 (13) 1.7 μg/m3 (8) 40.0
 
June 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 10.0 μg/m3 (10) 2.4 μg/m3 (10) 40.0
 
June 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 12.0 μg/m3 (12) -1.2 μg/m3 (0) 41.0
 
June 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 14.0 μg/m3 (13) -1.7 μg/m3 (0) 42.0
 
June 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 17.0 μg/m3 (16) 0.0 μg/m3 (0) 43.0
 
June 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 24.0 μg/m3 (23) 0.1 μg/m3 (1) 46.0
 
June 19, 2021, midnight N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 13.0 μg/m3 (13) 0.6 μg/m3 (3) 49.0
 
June 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 17.0 μg/m3 (16) 2.1 μg/m3 (9) 50.0
 
June 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 23.0 μg/m3 (22) 2.8 μg/m3 (12) 51.0
 
June 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 20.0 μg/m3 (19) 4.5 μg/m3 (19) 51.0
 
June 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 26.0 μg/m3 (25) 6.9 μg/m3 (29) 51.0
 
June 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 28.0 μg/m3 (26) 3.5 μg/m3 (15) 55.0
 
June 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 31.0 μg/m3 (29) 4.7 μg/m3 (20) 51.0
 
June 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 38.0 μg/m3 (36) 6.2 μg/m3 (26) 48.0
 
June 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 43.0 μg/m3 (40) 8.1 μg/m3 (34) 47.0
 
June 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 34.0 μg/m3 (32) 7.4 μg/m3 (31) 48.0
 
June 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 31.0 μg/m3 (29) 7.6 μg/m3 (32) 50.0
 
June 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 32.0 μg/m3 (30) 4.4 μg/m3 (19) 35.0
 
June 18, 2021, noon N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 25.0 μg/m3 (24) 6.4 μg/m3 (27) 41.0
 
June 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 25.0 μg/m3 (24) 7.4 μg/m3 (31) 49.0
 
June 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 27.0 μg/m3 (25) 6.6 μg/m3 (28) 61.0
 
June 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 26.0 μg/m3 (25) 8.6 μg/m3 (36) 58.0
 
June 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 30.0 μg/m3 (28) 4.5 μg/m3 (19) 55.0
 
June 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 29.0 μg/m3 (27) 3.3 μg/m3 (14) 55.0
 
June 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 25.0 μg/m3 (24) 3.5 μg/m3 (15) 58.0
 
June 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 24.0 μg/m3 (23) 4.2 μg/m3 (18) 51.0
 
June 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 26.0 μg/m3 (25) 5.0 μg/m3 (21) 50.0
 
June 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 25.0 μg/m3 (24) 5.9 μg/m3 (25) 50.0
 
June 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 27.0 μg/m3 (25) 5.7 μg/m3 (24) 48.0
 
June 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 31.0 μg/m3 (29) 5.9 μg/m3 (25) 49.0
 
June 18, 2021, midnight N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 34.0 μg/m3 (32) 4.9 μg/m3 (21) 55.0
 
June 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 34.0 μg/m3 (32) 5.4 μg/m3 (23) 55.0
 
June 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 39.0 μg/m3 (37) 3.2 μg/m3 (14) 58.0
 
June 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 27.0 μg/m3 (25) 3.3 μg/m3 (14) 55.0
 
June 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 32.0 μg/m3 (30) 3.7 μg/m3 (16) 51.0
 
June 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 30.0 μg/m3 (28) 2.8 μg/m3 (12) 51.0
 
June 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 26.0 μg/m3 (25) 3.3 μg/m3 (14) 51.0
 
June 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 28.0 μg/m3 (26) 2.1 μg/m3 (9) 51.0
 
June 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 27.0 μg/m3 (25) -0.2 μg/m3 (0) 51.0
 
June 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 27.0 μg/m3 (25) 1.1 μg/m3 (5) 51.0
 
June 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 16.0 μg/m3 (15) 3.0 μg/m3 (13) 50.0
 
June 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 21.0 μg/m3 (20) 1.4 μg/m3 (6) 45.0
 
June 17, 2021, noon N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 13.0 μg/m3 (13) 1.6 μg/m3 (7) 41.0
 
June 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 13.0 μg/m3 (13) 2.1 μg/m3 (9) 41.0
 
June 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 15.0 μg/m3 (14) 4.0 μg/m3 (17) 43.0
 
June 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 18.0 μg/m3 (17) 5.2 μg/m3 (22) 44.0
 
June 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 15.0 μg/m3 (14) 2.1 μg/m3 (9) 44.0
 
June 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 19.0 μg/m3 (18) 2.6 μg/m3 (11) 44.0
 
June 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 19.0 μg/m3 (18) 3.8 μg/m3 (16) 42.0
 
June 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 11.0 μg/m3 (11) 4.5 μg/m3 (19) 41.0
 
June 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 20.0 μg/m3 (19) 3.1 μg/m3 (13) 42.0
 
June 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 23.0 μg/m3 (22) 1.9 μg/m3 (8) 39.0
 
June 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 19.0 μg/m3 (18) 3.1 μg/m3 (13) 42.0
 
June 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 17.0 μg/m3 (16) 4.7 μg/m3 (20) 44.0
 
June 17, 2021, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 28.0 μg/m3 (26) 5.7 μg/m3 (24) 46.0
 
June 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 17.0 μg/m3 (16) 6.2 μg/m3 (26) 45.0
 
June 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 22.0 μg/m3 (21) 0.9 μg/m3 (4) 44.0
 
June 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 25.0 μg/m3 (24) N/A 44.0
 
June 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 36.0 μg/m3 (34) 9.9 μg/m3 (42) 45.0
 
June 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 49.0 μg/m3 (46) 11.7 μg/m3 (49) 49.0
 
June 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 49.0 μg/m3 (46) 18.0 μg/m3 (64) 64.0
 
June 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 52.0 μg/m3 (49) 14.9 μg/m3 (57) 57.0
 
June 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 44.0 μg/m3 (41) 22.5 μg/m3 (73) 73.0
 
June 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 39.0 μg/m3 (37) 22.3 μg/m3 (73) 73.0
 
June 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 78.0 μg/m3 (63) 54.4 μg/m3 (148) 148.0
 
June 16, 2021, noon N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 66.0 μg/m3 (57) 47.5 μg/m3 (131) 131.0
 
June 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 25.0 μg/m3 (24) 6.3 μg/m3 (27) 39.0
 
June 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 30.0 μg/m3 (28) 8.2 μg/m3 (35) 41.0
 
June 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 27.0 μg/m3 (25) 6.3 μg/m3 (27) 40.0
 
June 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 30.0 μg/m3 (28) 6.0 μg/m3 (25) 41.0
 
June 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 33.0 μg/m3 (31) 7.2 μg/m3 (31) 42.0
 
June 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 31.0 μg/m3 (29) 9.9 μg/m3 (42) 43.0
 
June 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 42.0 μg/m3 (39) 8.4 μg/m3 (36) 45.0
 
June 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 30.0 μg/m3 (28) 8.0 μg/m3 (34) 46.0
 
June 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 31.0 μg/m3 (29) 13.6 μg/m3 (55) 55.0
 
June 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 32.0 μg/m3 (30) 6.5 μg/m3 (28) 46.0
 
June 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 30.0 μg/m3 (28) 5.0 μg/m3 (21) 44.0
 
June 16, 2021, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 49.0 μg/m3 (46) 4.5 μg/m3 (19) 48.0
 
June 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 32.0 μg/m3 (30) 5.7 μg/m3 (24) 50.0
 
June 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 31.0 μg/m3 (29) 9.7 μg/m3 (41) 55.0
 
June 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 42.0 μg/m3 (39) 10.2 μg/m3 (43) 55.0
 
June 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 42.0 μg/m3 (39) 10.6 μg/m3 (45) 51.0
 
June 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 37.0 μg/m3 (35) 6.7 μg/m3 (28) 50.0
 
June 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 40.0 μg/m3 (38) 4.7 μg/m3 (20) 50.0
 
June 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 24.0 μg/m3 (23) 5.2 μg/m3 (22) 46.0
 
June 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 10.0 μg/m3 (10) 4.3 μg/m3 (18) 44.0
 
June 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 13.0 μg/m3 (13) 5.4 μg/m3 (23) 41.0
 
June 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 9.0 μg/m3 (9) 4.7 μg/m3 (20) 41.0
 
June 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 12.0 μg/m3 (12) 5.4 μg/m3 (23) 40.0
 
June 15, 2021, noon N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 11.0 μg/m3 (11) 8.2 μg/m3 (35) 37.0
 
June 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 14.0 μg/m3 (13) 6.5 μg/m3 (28) 38.0
 
June 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 16.0 μg/m3 (15) 7.5 μg/m3 (32) 38.0
 
June 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 16.0 μg/m3 (15) 4.3 μg/m3 (18) 43.0
 
June 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 16.0 μg/m3 (15) 7.2 μg/m3 (31) 43.0
 
June 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 15.0 μg/m3 (14) 3.5 μg/m3 (15) 48.0
 
June 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 29.0 μg/m3 (27) 3.3 μg/m3 (14) 65.0
 
June 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A 16.0 μg/m3 (15) 2.6 μg/m3 (11) 68.0
 
June 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 12.0 μg/m3 (12) 4.3 μg/m3 (18) 61.0
 
June 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 12.0 μg/m3 (12) 1.4 μg/m3 (6) 61.0
 
June 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 15.0 μg/m3 (14) 1.9 μg/m3 (8) 65.0
 
June 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 14.0 μg/m3 (13) 1.4 μg/m3 (6) 61.0
 
June 15, 2021, midnight N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 14.0 μg/m3 (13) 1.4 μg/m3 (6) 58.0
 
June 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 21.0 μg/m3 (20) 3.1 μg/m3 (13) 55.0
 
June 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 16.0 μg/m3 (15) 2.8 μg/m3 (12) 51.0
 
June 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 15.0 μg/m3 (14) 3.1 μg/m3 (13) 49.0
 
June 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 17.0 μg/m3 (16) 5.2 μg/m3 (22) 48.0
 
June 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 23.0 μg/m3 (22) 4.2 μg/m3 (18) 47.0
 
June 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 20.0 μg/m3 (19) 2.3 μg/m3 (10) 47.0
 
June 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 16.0 μg/m3 (15) 1.7 μg/m3 (8) 48.0
 
June 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 12.0 μg/m3 (12) 3.8 μg/m3 (16) 47.0
 
June 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 15.0 μg/m3 (14) 4.7 μg/m3 (20) 25.0
 
June 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 14.0 μg/m3 (13) 4.5 μg/m3 (19) 19.0
 
June 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 16.0 μg/m3 (15) 4.2 μg/m3 (18) 18.0
 
June 14, 2021, noon N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 18.0 μg/m3 (17) 0.9 μg/m3 (4) 17.0
 
June 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 15.0 μg/m3 (14) 4.0 μg/m3 (17) 17.0
 
June 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 19.0 μg/m3 (18) 7.0 μg/m3 (30) 30.0
 
June 14, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 19.0 μg/m3 (18) 3.0 μg/m3 (13) 18.0
 
June 14, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 22.0 μg/m3 (21) 4.5 μg/m3 (19) 21.0
 
June 14, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 15.0 μg/m3 (14) 7.7 μg/m3 (33) 33.0
 
June 14, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 20.0 μg/m3 (19) 3.3 μg/m3 (14) 19.0
 
June 14, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 16.0 μg/m3 (15) 2.2 μg/m3 (10) 15.0
 
June 14, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 16.0 μg/m3 (15) 4.5 μg/m3 (19) 19.0
 
June 14, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 17.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
June 14, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 19.0 μg/m3 (18) 8.2 μg/m3 (35) 35.0
 
June 14, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 28.0 μg/m3 (26) 10.1 μg/m3 (43) 43.0
 
June 14, 2021, midnight N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 26.0 μg/m3 (25) 6.7 μg/m3 (28) 28.0
 
June 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 27.0 μg/m3 (25) 4.3 μg/m3 (18) 25.0
 
June 13, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 26.0 μg/m3 (25) 6.2 μg/m3 (26) 26.0
 
June 13, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 32.0 μg/m3 (30) 4.0 μg/m3 (17) 30.0
 
June 13, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 24.0 μg/m3 (23) 4.2 μg/m3 (18) 23.0